Release 0.10.1

Fix the startup crash on D3D12 with FXC: CPU fallback for the tessellation pipeline, FXC-friendly shader (#1098 ) (#1099 )
* GPU tessellation: a pipeline the device cannot build falls back to CPU meshing instead of crashing (#1098) Build the tessellation compute pipeline inside error scopes; TessGpu::new returns an error, and the viewport logs it and meshes bodies on the CPU. A Windows CI job builds the pipeline with D3D12's FXC on the WARP adapter. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * Tessellation shader: basis functions in one-dimensional local arrays, so D3D12's FXC compiles it (#1098) FXC has to unroll loops that write an array inside a struct (Basis.n0/n1) or a 2-D array (ndu) by a counter, and cannot with run-time trip counts (X3511). A2.2 basis functions in a local 1-D array returned whole; derivatives from the degree p-1 functions; the pole step offsets computed rather than indexed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-14 14:41:19 +00:00 · 2026-10-14 14:41:16 +00:00 · 2026-10-14 12:56:47 +00:00 · 2026-10-14 05:38:13 -04:00 · 2026-10-14 05:28:18 -04:00 · 2026-10-14 05:27:39 -04:00
373 changed files with 36923 additions and 5379 deletions
@@ -10,6 +10,7 @@ not (
    (package(solidcraft-engine) & (
        test(=tests::hostile_params_never_panic)
        | test(/^tests::robustness::/)
+        | test(/^tests::robustness_goldens::/)
        | test(=pattern_suppress_tests::enclosure_arc_extinction_keeps_a_real_sharp_inner_lip_after_resize_and_reopen)
        | test(=pattern_suppress_tests::enclosure_datums_follow_wall_height_and_board_depth_with_material_proofs)
        | test(=cmd::plastic::tests::enclosure_snap_fit_follows_resized_front_wall)
@@ -21,8 +21,9 @@ permissions:
  contents: read

 concurrency:
-  group: ci-${{ github.ref }}
-  # Every push to main gets its full run; a new PR push replaces the old run.
+  # A new PR push replaces the old run. Only one run per group may wait, so a busy main would
+  # cancel the waiting nightly (or a Run workflow) before it starts: they get groups of their own.
+  group: ci-${{ github.event_name }}-${{ github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

 env:
@@ -47,6 +48,7 @@ jobs:
    runs-on: ubuntu-24.04
    outputs:
      native: ${{ steps.paths.outputs.native }}
+      kernel: ${{ steps.paths.outputs.kernel }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
@@ -59,12 +61,14 @@ jobs:
          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
        run: |
          native=false
+          kernel=false
          if [ "$EVENT_NAME" != pull_request ]; then
            native=true
          else
            # Compare both old and new paths of renames; unknown paths run native checks.
            git diff --no-renames --name-only -z "$BASE_SHA...$HEAD_SHA" > "$RUNNER_TEMP/ci-paths"
            while IFS= read -r -d '' path; do
+              case "$path" in crates/kernel/*|vendor/truck-*) kernel=true ;; esac
              case "$path" in
                .github/workflows/ci.yml) native=true ;;
                *.rs|Cargo.toml|Cargo.lock|*/Cargo.toml|.cargo/*|rust-toolchain*) native=true ;;
@@ -74,6 +78,7 @@ jobs:
            done < "$RUNNER_TEMP/ci-paths"
          fi
          echo "native=$native" >> "$GITHUB_OUTPUT"
+          echo "kernel=$kernel" >> "$GITHUB_OUTPUT"

  checks:
    name: Format and repository checks
@@ -95,6 +100,8 @@ jobs:
        run: cargo xtask licences --check
      - name: Dependency layers
        run: cargo xtask layers
+      - name: Web app offline use and updates (headless Chrome)
+        run: cargo xtask web-offline-test

  clippy:
    name: Native Linux Clippy
@@ -150,7 +157,7 @@ jobs:

  tests:
    name: Native Linux tests (${{ matrix.shard }}/4)
-    needs: build-tests
+    needs: [changes, build-tests]
    runs-on: ubuntu-24.04
    timeout-minutes: 60
    strategy:
@@ -177,6 +184,16 @@ jobs:
          # the build job's path, which is the same checkout path here.
          cargo nextest run --archive-file tests.tar.zst --workspace-remap . --extract-to . --extract-overwrite \
            --profile ci --partition "slice:$SHARD/4" "${all[@]}"
+      - name: Robustness goldens sample (pull requests that touch the kernel)
+        # Every 8th seed of tests/robustness/goldens.json, a quarter per shard; pushes to main and
+        # the nightly run every seed in the step above.
+        if: github.event_name == 'pull_request' && needs.changes.outputs.kernel == 'true'
+        env:
+          SHARD: ${{ matrix.shard }}
+        run: |
+          cargo nextest run --archive-file tests.tar.zst --workspace-remap . --extract-to . --extract-overwrite \
+            --profile ci --ignore-default-filter \
+            -E "package(solidcraft-engine) & test(=tests::robustness_goldens::sample_$((SHARD - 1)))"
      - name: Upload test timings
        if: always()
        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
@@ -269,9 +286,31 @@ jobs:
          name: oracle-report
          path: docs/oracle.md

+  # D3D12's older shader compiler (FXC, used where dxcompiler.dll is absent) is stricter than
+  # DXC, Vulkan and Metal: a shader it cannot compile once crashed the app at startup. Build the
+  # GPU tessellation pipeline with FXC on the runner's WARP software adapter and compare its
+  # results with the CPU.
+  windows-fxc:
+    name: Windows D3D12 FXC shaders
+    needs: changes
+    if: needs.changes.outputs.native == 'true'
+    runs-on: windows-latest
+    timeout-minutes: 45
+    env:
+      WGPU_BACKEND: dx12
+      WGPU_DX12_COMPILER: fxc
+      SOLIDCRAFT_REQUIRE_GPU: "1"
+    steps:
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@6323deb102c322ba6fcbdcafc7e3dddab59af2b6 # v2.9.2
+        with:
+          key: windows-fxc
+      - run: cargo test -p solidcraft-gpu --profile ci --locked
+
  # Preserve the existing check name for branch protection, including docs-only PRs.
  ci:
-    needs: [changes, checks, clippy, build-tests, tests, doc-tests, oracle]
+    needs: [changes, checks, clippy, build-tests, tests, doc-tests, oracle, windows-fxc]
    if: always()
    runs-on: ubuntu-24.04
    steps:
@@ -285,6 +324,7 @@ jobs:
          TESTS: ${{ needs.tests.result }}
          DOCS: ${{ needs.doc-tests.result }}
          ORACLE: ${{ needs.oracle.result }}
+          WINDOWS_FXC: ${{ needs.windows-fxc.result }}
        run: |
          test "$CHANGES" = success
          test "$CHECKS" = success
@@ -294,6 +334,7 @@ jobs:
            test "$TESTS" = success
            test "$DOCS" = success
            test "$ORACLE" = success
+            test "$WINDOWS_FXC" = success
          fi

  wasm:
@@ -6,9 +6,9 @@ name: Packaging lint
 on:
  push:
    branches: [main]
-    paths: [".github/workflows/**", "packaging/**"]
+    paths: [".github/workflows/**", "packaging/**", "assets/**"]
  pull_request:
-    paths: [".github/workflows/**", "packaging/**"]
+    paths: [".github/workflows/**", "packaging/**", "assets/**"]
  workflow_dispatch:

 permissions:
@@ -52,13 +52,13 @@ jobs:
          }
      - name: XML, desktop entry, AppStream, Flatpak manifest
        run: |
-          xmllint --noout packaging/windows/solidcraft.wxs packaging/windows/solidcraft.en-us.wxl packaging/macos/*.plist* packaging/linux/*.xml*
-          desktop-file-validate packaging/linux/ai.storyteller.solidcraft.desktop
+          xmllint --noout assets/platforms/windows/solidcraft.wxs assets/platforms/windows/solidcraft.en-us.wxl assets/platforms/macos/*.plist* assets/platforms/linux/*.xml*
+          desktop-file-validate assets/platforms/linux/ai.storyteller.solidcraft.desktop
          # The window's X11 class is its app id; the old id stays only as the rename shims.
-          grep -qx 'StartupWMClass=ai.storyteller.solidcraft' packaging/linux/ai.storyteller.solidcraft.desktop
-          grep -q '<id>ai.storyteller.solvecraft</id>' packaging/linux/ai.storyteller.solidcraft.metainfo.xml.in
+          grep -qx 'StartupWMClass=ai.storyteller.solidcraft' assets/platforms/linux/ai.storyteller.solidcraft.desktop
+          grep -q '<id>ai.storyteller.solvecraft</id>' assets/platforms/linux/ai.storyteller.solidcraft.metainfo.xml.in
          grep -qF -e '--end-of-life-rebase=' packaging/flatpak-site.sh
-          sed -e 's/@VERSION@/0.0.0/' -e 's/@DATE@/2026-01-01/' packaging/linux/ai.storyteller.solidcraft.metainfo.xml.in >"$RUNNER_TEMP/ai.storyteller.solidcraft.metainfo.xml"
+          sed -e 's/@VERSION@/0.0.0/' -e 's/@DATE@/2026-01-01/' assets/platforms/linux/ai.storyteller.solidcraft.metainfo.xml.in >"$RUNNER_TEMP/ai.storyteller.solidcraft.metainfo.xml"
          appstreamcli validate --no-net --explain "$RUNNER_TEMP/ai.storyteller.solidcraft.metainfo.xml"
          python3 -c "import yaml; m = yaml.safe_load(open('packaging/linux/flatpak/ai.storyteller.solidcraft.bundle.yml')); assert m['id'] == 'ai.storyteller.solidcraft' and m['command'] == 'solidcraft'"
          python3 -c "import yaml; m = yaml.safe_load(open('packaging/linux/snap/snapcraft.yaml')); assert m['name'] == 'solidcraft' and m['confinement'] == 'strict' and m['apps']['solidcraft']['command'] == 'usr/bin/solidcraft'"
@@ -50,6 +50,8 @@ jobs:
      - name: Build the web app
        working-directory: apps/solidcraft-web
        run: trunk build --release --public-url /solidcraft/app/
+      - name: Test the web app offline and across an update (headless Chrome)
+        run: cargo xtask web-offline-test --site dist/web
      - name: Assemble the site
        run: |
          mkdir -p site
@@ -59,8 +59,8 @@ People trust SolidCraft with their designs; a crash loses their work. **This out
  nothing from FreeCAD is linked, vendored or shipped.) The sketch solver and the blend
  operations are our own.
 - **Assets — absolutely essential.** SolidCraft contains **no iconography, images, fonts or
-  artwork from commercial CAD products — ever.** Every icon is drawn in code
-  (`crates/ui-egui/src/icons.rs`). Any file asset must be original or openly licensed and **must have a row in ATTRIBUTION.md**
+  artwork from commercial CAD products — ever.** Every UI icon is drawn in collected code
+  (`assets/icons/ui/source/`, compiled through `crates/ui-egui/src/icons.rs`). Any file asset must be original or openly licensed and **must have a row in ATTRIBUTION.md**
  (`cargo xtask assets` enforces it). Screenshots of commercial CAD software are never committed.
  Breaking this rule is the most serious mistake you can make in this repo.
 - **Everything is a command.** User-visible behaviour = a command in `crates/engine/src/cmd/*`
@@ -75,7 +75,10 @@ People trust SolidCraft with their designs; a crash loses their work. **This out
  egui/eframe/winit/wgpu/rfd. **The UI crate is swappable.** Only `crates/kernel` may use `truck`.
 - **The UI is thin**: panels read engine state and act through `app.run(id, params)` /
  `app.start(id)`. Colours come from `theme::Tokens`.
- **Rust only.** Units are millimetres and radians internally; Z is up.
+- **Rust only.** Units are millimetres and radians internally; Z is up. The one exception is
+  JavaScript the browser requires: the service worker `apps/solidcraft-web/sw.js` (browsers only
+  run service workers as JavaScript) and the small inline scripts in `apps/solidcraft-web/index.html`.
+  Keep them minimal; `cargo xtask web-offline-test` covers the service worker.
 - **Quality gates** before every commit: `cargo xtask ci` (fmt, clippy -D warnings, tests,
  assets, layers). Commit after every feature arc that builds.
 - **Publishing**: `origin` is github.com/bherbruck/solidcraft. Changes land through **pull requests**:
@@ -122,7 +125,10 @@ before the draft is verified.
 ## Running and looking at the app
 - `cargo run --release -p solidcraft -- --sample --control PORT` (sample design + control channel).
  Pick a free port. Without a display, run it under `Xvfb :99` with `DISPLAY=:99`.
- Drive it with JSON lines on `127.0.0.1:PORT` (see `docs/control-protocol.md`):
+- Drive it with JSON lines on `127.0.0.1:PORT` (see `docs/control-protocol.md`). The first
+  request on a connection carries the launch's token as `"token"`: read it from
+  `~/.local/share/solidcraft/control/PORT.token`, or start the app with
+  `SOLIDCRAFT_CONTROL_TOKEN=$(openssl rand -hex 32)` and send that.
  - `{"id":1,"method":"engine.execute","params":{"command":"solid.extrude","params":{"distance":20}}}`
  - `{"id":2,"method":"ui.start","params":{"command":"sketch.create"}}` then `ui.click {x, y}`
  - `{"id":3,"method":"ui.screenshot","params":{"path":"/tmp/shot.png"}}` then read the PNG.
@@ -8,47 +8,44 @@ file is missing from this table.
 templates, materials or help text.** Every asset is original work by SolidCraft contributors or
 third-party material under an open licence. Screenshots of Autodesk software are never committed.

-Generated-in-code assets are original and have no file to list:
- the UI icon set (`crates/ui-egui/src/icons.rs`);
- the axis view, navigation bar and timeline glyphs (`crates/ui-egui/src/viewport.rs`,
-  `crates/ui-egui/src/timeline.rs`).
+Editable drawing code, native projects and shipped exports are collected under `assets/`.

 ## Files

 | File | Author | Source | Licence |
 |---|---|---|---|
-| assets/icon.svg | SolidCraft contributors | original macOS adaptation of the code-drawn SolidCraft mark, edited and exported with VectorCraft; Apple HIG and production templates consulted as layout references only | MIT OR Apache-2.0 |
-| assets/SolidCraft.icon/icon.json | SolidCraft contributors | approved Icon Composer composition and appearance settings for the original SolidCraft artwork | MIT OR Apache-2.0 |
-| assets/SolidCraft.icon/Assets/02-grid.svg | SolidCraft contributors | original perspective grid with elliptical radial alpha, exported from VectorCraft | MIT OR Apache-2.0 |
-| assets/SolidCraft.icon/Assets/02-grid-dark.svg | SolidCraft contributors | original blue perspective grid with elliptical radial alpha, exported from VectorCraft for the Dark appearance | MIT OR Apache-2.0 |
-| assets/SolidCraft.icon/Assets/03-solid-blue-cutout.svg | SolidCraft contributors | original saturated blue CAD solid with transparent topology cutouts, edited and exported with VectorCraft | MIT OR Apache-2.0 |
-| assets/Assets.car | SolidCraft contributors | Apple actool compilation of assets/SolidCraft.icon for macOS; contains original artwork only | MIT OR Apache-2.0 |
-| assets/icon.vectorcraft | SolidCraft contributors | editable VectorCraft source for assets/icon.svg, with named face and background layers | MIT OR Apache-2.0 |
-| assets/icon.png | SolidCraft contributors | 1024 × 1024 transparent sRGB export of assets/icon.svg from VectorCraft | MIT OR Apache-2.0 |
-| assets/icon.icns | SolidCraft contributors | macOS fallback compiled by Apple's actool from the approved assets/SolidCraft.icon composition | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_16x16.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_16x16@2x.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_32x32.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_32x32@2x.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_128x128.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_128x128@2x.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_256x256.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_256x256@2x.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_512x512.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
-| assets/icon.iconset/icon_512x512@2x.png | SolidCraft contributors | native sips export from assets/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.svg | SolidCraft contributors | original macOS adaptation of the code-drawn SolidCraft mark, edited and exported with VectorCraft; Apple HIG and production templates consulted as layout references only | MIT OR Apache-2.0 |
+| assets/icons/app/macos/source/SolidCraft.icon/icon.json | SolidCraft contributors | approved Icon Composer composition and appearance settings for the original SolidCraft artwork | MIT OR Apache-2.0 |
+| assets/icons/app/macos/source/SolidCraft.icon/Assets/02-grid.svg | SolidCraft contributors | original perspective grid with elliptical radial alpha, exported from VectorCraft | MIT OR Apache-2.0 |
+| assets/icons/app/macos/source/SolidCraft.icon/Assets/02-grid-dark.svg | SolidCraft contributors | original blue perspective grid with elliptical radial alpha, exported from VectorCraft for the Dark appearance | MIT OR Apache-2.0 |
+| assets/icons/app/macos/source/SolidCraft.icon/Assets/03-solid-blue-cutout.svg | SolidCraft contributors | original saturated blue CAD solid with transparent topology cutouts, edited and exported with VectorCraft | MIT OR Apache-2.0 |
+| assets/icons/app/macos/exports/Assets.car | SolidCraft contributors | Apple actool compilation of assets/icons/app/macos/source/SolidCraft.icon for macOS; contains original artwork only | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/source/icon.vectorcraft | SolidCraft contributors | editable VectorCraft source for assets/archive/icons/macos-v1/exports/icon.svg, with named face and background layers | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.png | SolidCraft contributors | 1024 × 1024 transparent sRGB export of assets/archive/icons/macos-v1/exports/icon.svg from VectorCraft | MIT OR Apache-2.0 |
+| assets/icons/app/macos/exports/icon.icns | SolidCraft contributors | macOS fallback compiled by Apple's actool from the approved assets/icons/app/macos/source/SolidCraft.icon composition | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_16x16.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_16x16@2x.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_32x32.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_32x32@2x.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_128x128.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_128x128@2x.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_256x256.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_256x256@2x.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_512x512.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
+| assets/archive/icons/macos-v1/exports/icon.iconset/icon_512x512@2x.png | SolidCraft contributors | native sips export from assets/archive/icons/macos-v1/exports/icon.png | MIT OR Apache-2.0 |
 | docs/screenshots/sample-plate.png | SolidCraft contributors | screenshot of SolidCraft itself (`solidcraft --sample`) | MIT OR Apache-2.0 |
 | docs/screenshots/demo-0.8.gif | SolidCraft contributors | original screen recording of the actual SolidCraft 0.8 English desktop UI modelling an original Raspberry Pi 4 case (no logos or branding; the engraved text is set in the system's DejaVu Sans Bold), generated with examples/demo/record_ui.sh and its original animated pointer overlay (9× playback) | MIT OR Apache-2.0 |
 | docs/screenshots/demo-0.8.mp4 | SolidCraft contributors | original screen recording of the actual SolidCraft 0.8 English desktop UI modelling an original Raspberry Pi 4 case (no logos or branding; the engraved text is set in the system's DejaVu Sans Bold), generated with examples/demo/record_ui.sh and its original animated pointer overlay (9× playback) | MIT OR Apache-2.0 |
 | docs/screenshots/rover-build.gif | 0xlillith (model); SolidCraft contributors (recording) | screen recording of the actual SolidCraft desktop UI replaying the timeline of the SELENE rover (`Rover-recorded.solidcraft` from https://github.com/0xlillith/solidcraft-rover, an original model by 0xlillith built through SolidCraft MCP); the model's lettering follows Ubuntu Light outlines (Canonical Ltd., Ubuntu Font Licence 1.0, as noted in that repository); the emblem is the SolidCraft project icon (2× playback) | MIT OR Apache-2.0 |
 | docs/screenshots/rover-build.mp4 | 0xlillith (model); SolidCraft contributors (recording) | screen recording of the actual SolidCraft desktop UI replaying the timeline of the SELENE rover (`Rover-recorded.solidcraft` from https://github.com/0xlillith/solidcraft-rover, an original model by 0xlillith built through SolidCraft MCP); the model's lettering follows Ubuntu Light outlines (Canonical Ltd., Ubuntu Font Licence 1.0, as noted in that repository); the emblem is the SolidCraft project icon | MIT OR Apache-2.0 |
-| docs/book/src/og.png | SolidCraft contributors | original 1280 × 640 social preview card (the SolidCraft mark, name and tagline), served by the docs site for link previews | MIT OR Apache-2.0 |
+| assets/branding/web/source/og.png | SolidCraft contributors | original 1280 × 640 social preview card (the SolidCraft mark, name and tagline), served by the docs site for link previews | MIT OR Apache-2.0 |
 | docs/book/src/generated/sample-plate.png | SolidCraft contributors | copy of docs/screenshots/sample-plate.png made by `cargo xtask book` (gitignored) | MIT OR Apache-2.0 |
 | docs/book/src/generated/bracket.png | SolidCraft contributors | rendered by `cargo xtask book` (`solidcraft-cli snapshot examples/bracket.json`; gitignored) | MIT OR Apache-2.0 |
 | docs/book/src/generated/enclosure.png | SolidCraft contributors | rendered by `cargo xtask book` (`solidcraft-cli snapshot docs/book/scripts/enclosure.json`; gitignored) | MIT OR Apache-2.0 |
 | docs/book/src/generated/revolve.png | SolidCraft contributors | rendered by `cargo xtask book` (`solidcraft-cli snapshot docs/book/scripts/revolve.json`; gitignored) | MIT OR Apache-2.0 |
 | docs/book/src/generated/sheet-metal.png | SolidCraft contributors | rendered by `cargo xtask book` (`solidcraft-cli snapshot docs/book/scripts/sheet-metal.json`; gitignored) | MIT OR Apache-2.0 |
-| crates/sketch/fonts/LiberationSans-Regular.ttf | Red Hat, Inc. (Liberation Fonts 2.x; digitized data Google) | https://github.com/liberationfonts (Debian fonts-liberation), unmodified; licence text in crates/sketch/fonts/OFL.txt; used for sketch Text outlines | SIL OFL 1.1 |
-| apps/solidcraft-web/fonts/BIZUDPGothic-Regular.ttf | The BIZ UDGothic Project Authors | https://github.com/googlefonts/morisawa-biz-ud-gothic (Google Fonts), unmodified; licence text in apps/solidcraft-web/fonts/OFL.txt; used for web UI Japanese font | SIL OFL 1.1 |
+| assets/fonts/liberation-sans/LiberationSans-Regular.ttf | Red Hat, Inc. (Liberation Fonts 2.x; digitized data Google) | https://github.com/liberationfonts (Debian fonts-liberation), unmodified; licence text in assets/fonts/liberation-sans/OFL.txt; used for sketch Text outlines | SIL OFL 1.1 |
+| assets/fonts/biz-udp-gothic/BIZUDPGothic-Regular.ttf | The BIZ UDGothic Project Authors | https://github.com/googlefonts/morisawa-biz-ud-gothic (Google Fonts), unmodified; licence text in assets/fonts/biz-udp-gothic/OFL.txt; used for web UI Japanese font | SIL OFL 1.1 |
 | tests/oracle/17-loft/reference.stl | SolidCraft contributors | triangulation of our own recipe (tests/oracle/17-loft/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle | MIT OR Apache-2.0 |
 | tests/oracle/23-bracket-multifeature/reference.stl | SolidCraft contributors | triangulation of our own recipe (tests/oracle/23-bracket-multifeature/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle | MIT OR Apache-2.0 |
 | tests/oracle/28-blind-pocket-fillets/reference.stl | SolidCraft contributors | triangulation of our own recipe (tests/oracle/28-blind-pocket-fillets/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle | MIT OR Apache-2.0 |
@@ -70,6 +67,45 @@ Generated-in-code assets are original and have no file to list:
 | tests/oracle/63-hinge-knuckle/reference.stl | SolidCraft contributors | triangulation of our own recipe (tests/oracle/63-hinge-knuckle/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle | MIT OR Apache-2.0 |
 | tests/oracle/65-sketch-gear-tooth/reference.stl | SolidCraft contributors | triangulation of our own recipe (tests/oracle/65-sketch-gear-tooth/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle | MIT OR Apache-2.0 |

+| assets/appearances/library.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/fonts/biz-udp-gothic/OFL.txt | The BIZ UDGothic Project Authors | Unmodified accompanying font licence | SIL OFL 1.1 |
+| assets/fonts/liberation-sans/OFL.txt | Red Hat, Inc.; Liberation Fonts contributors | Unmodified accompanying font licence | SIL OFL 1.1 |
+| assets/icons/app/linux/exports/hicolor/128x128/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/linux/exports/hicolor/16x16/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/linux/exports/hicolor/24x24/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/linux/exports/hicolor/256x256/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/linux/exports/hicolor/32x32/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/linux/exports/hicolor/48x48/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/linux/exports/hicolor/512x512/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/linux/exports/hicolor/64x64/apps/ai.storyteller.solidcraft.png | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/shared/source/app_icon.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/icons/app/shared/source/windows_ico.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/icons/app/windows/exports/solidcraft-executable.ico | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/app/windows/exports/solidcraft.ico | SolidCraft contributors | Generated from assets/icons/app/shared/source/app_icon.rs with the original CLI/ICO encoders | MIT OR Apache-2.0 |
+| assets/icons/ui/source/glyphs.rs | SolidCraft / VectorCraft contributors | Original glyphs; caption geometry adapted from VectorCraft titlebar.rs (https://github.com/storytold/vectorcraft) | MIT OR Apache-2.0 |
+| assets/icons/ui/source/icons.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/icons/ui/source/markers.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/icons/ui/source/navigation.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/icons/ui/source/pointer.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/locales/de.json | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/locales/en.json | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/locales/ja.json | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/locales/ko.json | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/locales/zh.json | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/materials/library.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/platforms/linux/ai.storyteller.solidcraft.desktop | PhotoCraft / SolidCraft contributors | PhotoCraft packaging templates (https://github.com/storytold/photocraft), adapted for SolidCraft | Apache-2.0 |
+| assets/platforms/linux/ai.storyteller.solidcraft.metainfo.xml.in | PhotoCraft / SolidCraft contributors | PhotoCraft packaging templates (https://github.com/storytold/photocraft), adapted for SolidCraft | Apache-2.0 |
+| assets/platforms/linux/ai.storyteller.solidcraft.mime.xml | PhotoCraft / SolidCraft contributors | PhotoCraft packaging templates (https://github.com/storytold/photocraft), adapted for SolidCraft | Apache-2.0 |
+| assets/platforms/macos/Info.plist.in | PhotoCraft / SolidCraft contributors | PhotoCraft packaging templates (https://github.com/storytold/photocraft), adapted for SolidCraft | Apache-2.0 |
+| assets/platforms/macos/README.txt | PhotoCraft / SolidCraft contributors | PhotoCraft packaging templates (https://github.com/storytold/photocraft), adapted for SolidCraft | Apache-2.0 |
+| assets/platforms/windows/solidcraft.en-us.wxl | PhotoCraft / SolidCraft contributors | PhotoCraft packaging templates (https://github.com/storytold/photocraft), adapted for SolidCraft | Apache-2.0 |
+| assets/platforms/windows/solidcraft.wxs | PhotoCraft / SolidCraft contributors | PhotoCraft packaging templates (https://github.com/storytold/photocraft), adapted for SolidCraft | Apache-2.0 |
+| assets/shaders/viewport.wgsl | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/styles/ui/palettes.rs | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+| assets/styles/web/loading.css | SolidCraft contributors | Original SolidCraft resource data or drawing code, collected without redesign | MIT OR Apache-2.0 |
+
+| docs/book/src/og.png | SolidCraft contributors | copy of assets/branding/web/source/og.png staged by cargo xtask book (gitignored) | MIT OR Apache-2.0 |
+
 ## Code adapted from sibling projects

 | SolidCraft file | Adapted from | Licence |
@@ -86,6 +122,16 @@ Generated-in-code assets are original and have no file to list:
 | LICENSE-MIT, LICENSE-APACHE (licence text) | CADCraft | — |
 | .github/workflows/release.yml, .github/workflows/packaging-lint.yml and packaging/ (release pipeline: Linux AppImage/deb/rpm/Flatpak/tar.gz, FreeBSD, macOS dmg, Windows MSI/portable zip, web zip; AppRun, nfpm, Flatpak, WiX and Info.plist templates) | PhotoCraft (https://github.com/storytold/photocraft) `.github/workflows/{release,packaging-lint}.yml`, `packaging/` | Apache-2.0 |

+## Incremental HDR codec adapter
+
+`crates/render/src/lighting/hdr.rs` adapts the scanline/component/old-RLE decoding
+state machines from the Radiance decoder in `image` 0.25.10
+([source](https://docs.rs/crate/image/0.25.10/source/src/codecs/hdr/decoder.rs)),
+MIT OR Apache-2.0. Metadata parsing still uses that library. The adapter makes row
+work cooperative and adds checked run lengths, zero-run rejection, width validation,
+header/input/radiance bounds and cancellation. Original licence texts are retained
+in THIRD-PARTY-LICENSES.txt; no images or artwork from that project are copied.
+
 ## Recovered contributions

 | SolidCraft file | Original contribution | Licence |
@@ -96,7 +142,7 @@ Generated-in-code assets are original and have no file to list:

 | Directory | Source | Licence | Changes |
 |---|---|---|---|
-| vendor/truck-meshalgo | truck-meshalgo 0.4.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.) | Apache-2.0 | meshing: bounded parameter searches, subdivision and provisional fixed-grid previews (vendor/README.md) |
+| vendor/truck-meshalgo | truck-meshalgo 0.4.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.) | Apache-2.0 | meshing: bounded parameter searches, collapsed-boundary projection, subdivision and provisional fixed-grid previews (vendor/README.md) |
 | vendor/truck-stepio | truck-stepio 0.3.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.) | Apache-2.0 | STEP writer: intersection-curve surfaces written at unique ids (vendor/README.md) |
 | vendor/truck-shapeops | truck-shapeops 0.4.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.) | Apache-2.0 | robust meshing and nearest-parameter fallback in booleans; degenerate intersection-curve rejection; face and edge history of booleans; trace macro (vendor/README.md) |
 | vendor/matext4cgmath | matext4cgmath 0.1.0, https://github.com/ricosjp/matext4cgmath (RICOS Co. Ltd.) | Apache-2.0 | root refinement stops after 100 Newton steps (vendor/README.md) |
@@ -75,7 +75,10 @@ People trust SolidCraft with their designs; a crash loses their work. **This out
  egui/eframe/winit/wgpu/rfd. **The UI crate is swappable.** Only `crates/kernel` may use `truck`.
 - **The UI is thin**: panels read engine state and act through `app.run(id, params)` /
  `app.start(id)`. Colours come from `theme::Tokens`.
- **Rust only.** Units are millimetres and radians internally; Z is up.
+- **Rust only.** Units are millimetres and radians internally; Z is up. The one exception is
+  JavaScript the browser requires: the service worker `apps/solidcraft-web/sw.js` (browsers only
+  run service workers as JavaScript) and the small inline scripts in `apps/solidcraft-web/index.html`.
+  Keep them minimal; `cargo xtask web-offline-test` covers the service worker.
 - **Quality gates** before every commit: `cargo xtask ci` (fmt, clippy -D warnings, tests,
  assets, layers). Commit after every feature arc that builds.
 - **Publishing**: `origin` is github.com/bherbruck/solidcraft. Changes land through **pull requests**:
@@ -99,7 +102,10 @@ before the draft is verified.
 ## Running and looking at the app
 - `cargo run --release -p solidcraft -- --sample --control PORT` (sample design + control channel).
  Pick a free port. Without a display, run it under `Xvfb :99` with `DISPLAY=:99`.
- Drive it with JSON lines on `127.0.0.1:PORT` (see `docs/control-protocol.md`):
+- Drive it with JSON lines on `127.0.0.1:PORT` (see `docs/control-protocol.md`). The first
+  request on a connection carries the launch's token as `"token"`: read it from
+  `~/.local/share/solidcraft/control/PORT.token`, or start the app with
+  `SOLIDCRAFT_CONTROL_TOKEN=$(openssl rand -hex 32)` and send that.
  - `{"id":1,"method":"engine.execute","params":{"command":"solid.extrude","params":{"distance":20}}}`
  - `{"id":2,"method":"ui.start","params":{"command":"sketch.create"}}` then `ui.click {x, y}`
  - `{"id":3,"method":"ui.screenshot","params":{"path":"/tmp/shot.png"}}` then read the PNG.
@@ -161,7 +161,8 @@ Pull requests skip a few heavy tests (one to four minutes each), which run on ev
 `main` and nightly; check the `main` run after merging. They are listed in
 `.config/nextest.toml` and the [testing page](docs/book/src/dev/testing.md):

- `solidcraft-engine`: `tests::hostile_params_never_panic`, everything in `tests::robustness`,
+- `solidcraft-engine`: `tests::hostile_params_never_panic`, everything in `tests::robustness` and
+  `tests::robustness_goldens` (pull requests that touch `crates/kernel` run its `sample_*` part),
  `pattern_suppress_tests::enclosure_arc_extinction_keeps_a_real_sharp_inner_lip_after_resize_and_reopen`,
  `pattern_suppress_tests::enclosure_datums_follow_wall_height_and_board_depth_with_material_proofs`,
  `cmd::plastic::tests::enclosure_snap_fit_follows_resized_front_wall`
@@ -3281,11 +3281,12 @@ dependencies = [

 [[package]]
 name = "solidcraft"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "eframe",
 "egui",
 "embed-resource",
+ "getrandom 0.3.4",
 "hidapi",
 "log",
 "quick-xml",
@@ -3298,7 +3299,7 @@ dependencies = [

 [[package]]
 name = "solidcraft-cli"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "serde_json",
 "solidcraft-engine",
@@ -3307,7 +3308,7 @@ dependencies = [

 [[package]]
 name = "solidcraft-doc"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "log",
 "serde",
@@ -3322,7 +3323,7 @@ dependencies = [

 [[package]]
 name = "solidcraft-engine"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "log",
 "serde",
@@ -3338,16 +3339,29 @@ dependencies = [

 [[package]]
 name = "solidcraft-geom"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "serde",
 "serde_json",
 "thiserror 2.0.21",
 ]

+[[package]]
+name = "solidcraft-gpu"
+version = "0.10.1"
+dependencies = [
+ "log",
+ "naga",
+ "pollster 0.4.0",
+ "solidcraft-geom",
+ "solidcraft-kernel",
+ "thiserror 2.0.21",
+ "wgpu",
+]
+
 [[package]]
 name = "solidcraft-io"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "quick-xml",
 "serde",
@@ -3362,7 +3376,7 @@ dependencies = [

 [[package]]
 name = "solidcraft-kernel"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "log",
 "rayon",
@@ -3380,7 +3394,7 @@ dependencies = [

 [[package]]
 name = "solidcraft-mcp"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "serde_json",
 "solidcraft-engine",
@@ -3388,7 +3402,7 @@ dependencies = [

 [[package]]
 name = "solidcraft-render"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "image",
 "serde",
@@ -3398,7 +3412,7 @@ dependencies = [

 [[package]]
 name = "solidcraft-sketch"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "serde",
 "serde_json",
@@ -3409,22 +3423,24 @@ dependencies = [

 [[package]]
 name = "solidcraft-ui-egui"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "egui",
 "egui-wgpu",
 "image",
 "log",
+ "pollster 0.4.0",
 "serde",
 "serde_json",
 "solidcraft-engine",
+ "solidcraft-gpu",
 "ttf-parser",
 "web-time",
 ]

 [[package]]
 name = "solidcraft-web"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "eframe",
 "egui",
@@ -4847,9 +4863,10 @@ checksum = "e450f9b2ed1dff33c94c12589a87338689467b9c4f5d8a5710bd09a847d2c8a7"

 [[package]]
 name = "xtask"
-version = "0.9.0"
+version = "0.10.1"
 dependencies = [
 "serde_json",
+ "sha2",
 ]

 [[package]]
@@ -5,7 +5,7 @@ members = ["crates/*", "apps/*", "xtask"]
 exclude = ["vendor"]

 [workspace.package]
-version = "0.9.0"
+version = "0.10.1"
 edition = "2024"
 license = "MIT OR Apache-2.0"
 rust-version = "1.95"
@@ -18,6 +18,7 @@ solidcraft-geom = { path = "crates/geom" }
 solidcraft-sketch = { path = "crates/sketch" }
 solidcraft-kernel = { path = "crates/kernel" }
 solidcraft-render = { path = "crates/render" }
+solidcraft-gpu = { path = "crates/gpu" }
 solidcraft-doc = { path = "crates/doc" }
 solidcraft-io = { path = "crates/io" }
 solidcraft-engine = { path = "crates/engine" }
@@ -50,7 +51,7 @@ quick-xml = "0.41"
 ttf-parser = { version = "0.25", default-features = false, features = ["std"] }

 # images
-image = { version = "0.25", default-features = false, features = ["png"] }
+image = { version = "0.25", default-features = false, features = ["png", "hdr"] }

 # ui
 egui = "0.36"
@@ -58,6 +59,10 @@ eframe = { version = "0.36", default-features = false, features = ["persistence"
 # Instant/SystemTime that also work in the browser (std panics on wasm32-unknown-unknown).
 web-time = "1"
 egui-wgpu = "0.36"
+# the wgpu egui-wgpu uses, for compute (crates/gpu); backends come from the apps' features
+wgpu = { version = "30", default-features = false, features = ["std", "wgsl"] }
+naga = { version = "30", default-features = false }
+pollster = "0.4"
 rfd = "0.17"

 [workspace.lints.rust]
@@ -19,6 +19,11 @@ licensed MIT OR Apache-2.0; ATTRIBUTION.md lists the files.
 The release packaging (.github/workflows/release.yml, packaging/) is adapted from PhotoCraft
 (https://github.com/storytold/photocraft), licensed under the Apache License 2.0.

+The incremental Radiance RGBE row adapter in crates/render/src/lighting/hdr.rs adapts
+decoding state machines from image 0.25.10 (https://github.com/image-rs/image),
+MIT OR Apache-2.0. ATTRIBUTION.md describes the bounded/cancellable changes; the
+original licence texts are included in THIRD-PARTY-LICENSES.txt.
+
 Most bundled assets are drawn in code or contributed originally; third-party fonts (Liberation Sans
 for sketch text, BIZ UDPGothic for web Japanese display) are licensed under SIL OFL 1.1. The
 per-file list is in ATTRIBUTION.md.
@@ -125,7 +125,8 @@ rebuild with no errors, replayed here at 2× speed.
  provisional picture from warm geometry caches while rebuilding before editing; caches never
  replace the parametric design. Export to STEP (AP242 with body names, colours and
  components as assemblies; revolved faces as native planes, cylinders, cones, spheres and tori),
-  IGES 5.3 (manifold solid B-reps with names and colours), 3MF, STL (binary/ASCII) and OBJ;
+  IGES 5.3 (manifold solid B-reps with names and colours), 3MF, STL (binary/ASCII) and OBJ, and
+  assemblies with joints as URDF for robot simulators (docs/urdf.md);
  3MF, STL and OBJ import as mesh bodies (they render, measure, move and export; solid features
  need B-rep bodies). Convert Mesh reconstructs supported closed constant-section parts
  as parametric solids with planar and circular cylindrical faces;
@@ -199,7 +200,9 @@ stdio. Headless it runs its own design session; with `--connect 127.0.0.1:PORT`
 started with `solidcraft --control PORT`, so you can watch the agent model. Tools:
 `list_commands`, `execute`, `batch`, `inspect_design`, `measure`, `body_topology`,
 `set_parameter`, `screenshot` (returns the image), `export`, `undo`, `redo`, `new_design`, `open`,
-`save`. Claude Code: `claude mcp add solidcraft -- solidcraft-cli mcp`. Details, client
+`save`. Tool calls reach files only in the open design's folder (when it lies inside your home
+folder, never home itself or a hidden folder), SolidCraft's recovery folder and folders given with
+`--allow-path DIR`. Claude Code: `claude mcp add solidcraft -- solidcraft-cli mcp`. Details, client
 configuration and an example session: [docs/mcp.md](docs/mcp.md).

 ## Architecture
@@ -47,20 +47,41 @@ PCB / Package, Render, Animation, Simulation, Manufacture/CAM, Drawings.
 | M1 | Sketch depth: command coverage implemented — projection/intersect/include as linked geometry (auto-project on faces, lost-reference warnings, break link), full SKETCH create/modify set (slots, polygons, tangent arcs/circles, ellipse, fit/control splines, conic, text, trim/extend/break, fillet/chamfer, offset, mirror, patterns, move/scale, blend curve, centerline), constraints incl. curvature and polygon with over-constraint refusal, driven/arc-length/linear-diameter dimensions, AutoConstrain, DXF/SVG insert, 3D sketch curves (Project To Surface, Intersection Curve, Isoparametric Curve, Spun Profile), exact free-form profiles (B-spline/NURBS edges, any spline degree, curves cut by crossings), sweeps and pipes along 3D sketch curves, canvases and decals, curvature combs. Exact free-form Extend and certified associative offsets now preserve geometry and IDs through edits, deletion and reopen. Occurrence-frame 3D wires now store explicit coordinate spaces and retain points and analytic fits through moves, refresh, undo and reopen. Constructive sketch solving (Owen 1991, Fudos & Hoffmann 1997) ahead of the numerical solver: points and rigid clusters are placed on the branch the sketch had, so dimension edits and drags keep their solution; edits that would turn a sketch over are refused; drags re-solve only the sketch per frame. Remaining workflow repairs: mixed offset junctions, legacy natural-spline seams, and damaged legacy wire links lacking frame provenance | in progress | 4 |
 | M2 | Robust modelling: coplanar booleans in the kernel, holes (placed on faces and on sketch points), threads (cosmetic, then modelled), patterns, mirror, shell, draft, split, construction geometry | in progress | 16 |
 | M3 | General fillets and chamfers (curved edges, chains, vertex blends); saddle rolling-ball surfaces now use continuous seam sections and arc-length fitting with shared contact boundaries and bounded accuracy checks | in progress | 30 |
-| M4 | Files: STEP import (done — [docs/step-import.md](docs/step-import.md)), 3MF export and 3MF/STL import as mesh bodies (done), constant-section parametric mesh reconstruction, DXF sketches, OBJ import | in progress | 6 |
+| M4 | Files: STEP import (done — [docs/step-import.md](docs/step-import.md)), 3MF export and 3MF/STL import as mesh bodies (done), 3MF with B-rep face tags ([docs/formats/3mf-face-tags.md](docs/formats/3mf-face-tags.md), done), constant-section parametric mesh reconstruction, DXF sketches, OBJ import | in progress | 6 |
 | M5 | Persistent naming of faces and edges (docs/book/src/dev/naming.md): faces named from their exact kernel-reported history (sketch curve sides, caps, revolve sections, primitive sides, blends, shell inner walls, pattern/mirror copies; split pieces told apart by the faces around them, lumps of a cut body named after their faces), edges by their faces; fillets/chamfers, sketches on faces, shell/draft/offset/replace faces, hole placements, joint origins and face appearances resolve by name first and warn when the entity split or vanished: done. sheet metal edges by base sketch line and flange side, shell inner faces, sweep and loft roles: done. kernel-reported face history: done (merged faces answer to every name; operations without history yet fall back to geometric names, flagged unverified; format 14 keeps older designs' geometric names). Left: history through sheet metal, plastic, surface and emboss features; FaceSource certificates through history | in progress | 20 |
 | M6 | UI depth: selection feedback and origin (done), timeline editing (done: hover and selection highlight modifier faces, including fillets and chamfers; edit feature, history marker drag, dependency-checked single and multi-item reorder, suppress, rename, delete with dependents, re-resolved references; redefining selections refreshes persistent edge/face references while retaining feature identity and dimension names; optional compact named left feature history with rollback bar, multi-selection and persistent folders above the parts browser), right-docked dialogs (done), live previews for every feature dialog (done), keyboard-first commands with on-canvas value boxes and sketch inline dimensions (done), drag manipulators with automatic join/cut (done: extrude incl. two sides, fillet, shell, hole depth, move, pattern spacing, revolve rotator; taper handle open), dark theme (done), right-click menu with Repeat (done), measure tool (done), section analysis (done), selection filter (done), drag-solve of sketch points (done); appearance controls now preserve body/face/component targeting, named transparent looks, reuse/search and override removal; preferences | in progress | 6 |
 | M7 | Sweep, loft (incl. to a point), rib and web (to next / depth), emboss (planar faces and exact radial emboss/deboss of bounded orthogonal profiles on complete exterior cylinders/sleeves), thread (cosmetic, and modelled M3–M20 outside and inside: the ISO profile screwed in as a faceted cut), coil (smooth B-spline helical walls), pipe, pattern on path, patterns of bodies and components, replace face (parallel), align, remove, feature copy/paste: done. Unique eligible cylindrical targets are inferred for new Emboss features. Left: general curved-face emboss and exact (unfaceted) modelled threads | in progress | 12 |
 | M8 | Surface workspace (#772). Done: Patch (sketch regions; edge loops filled G0), Stitch, Thicken (planes and cylinders), Extend (straight edges of planar surfaces), Trim (by a plane or a face), Delete Face (healing), Boundary Fill, zebra/draft/curvature-map analysis. Proposed, in order: surface Extrude/Revolve/Sweep/Loft from open and closed curves (#757), Offset surface (#758), Unstitch and Reverse Normal (#766), Delete Face without healing (#768); Extend curved faces and edges (#760), mutual trim and trim by projected curves (#767), Untrim (#761), Thicken every surface kind (#765); Ruled (#762), Boundary surface and curve networks with G0/G1/G2 (#763), Patch with G1/G2 and general loops (#759), Blend surface (#764), sweep rails, twist and scale (#771, loft rails #201), fillet between surface bodies (#769); continuity analysis, surface curvature combs and isocurves (#770) | deferred | — |
-| M9 | Components and assemblies: New Component / Create Components from Bodies, active component, per-component origin/bodies/sketches/timeline entries, occurrences with transforms, Copy/Paste vs Paste New, nested Browser tree with visibility and isolate; Ground, Move/Copy of occurrences, joints (rigid, revolute, slider, cylindrical, pin-slot, planar, ball) by joint origins with limits and Drive Joints, As-built Joint, Rigid Group, Contact Sets (driving and motion studies stop where bodies in a set would pass through each other), Motion Study (joint values keyed along a timeline, playback, export of occurrence positions as JSON/CSV), Exploded views (automatic or by hand, shown without changing placements); interference, per-component physical properties; STEP with assembly structure. Physical properties now measure material-aware component/occurrence placements, descendants and repeated instances, including pending moves and body reassignment offsets; contact geometry and automatic exploded centres respect those offsets. Groundwork done: component tree, occurrences with transforms (instances, Paste New), world placement, active component as authoring frame, ground, Capture/Revert Position, moving bodies and sketches. UI: ASSEMBLE panel dialogs for New Component, Joint (snaps on faces, edges, circles and vertices; animated motion preview; offsets, flip, limits), As-built Joint, Joint Origin, Rigid Group, Drive Joints (live slider), Motion Link and Interference (overlaps shown red); joints in the timeline and the Browser | in progress | 32 |
+| M9 | Components and assemblies: New Component / Create Components from Bodies, active component, per-component origin/bodies/sketches/timeline entries, occurrences with transforms, Copy/Paste vs Paste New, nested Browser tree with visibility and isolate; Ground, Move/Copy of occurrences, joints (rigid, revolute, slider, cylindrical, pin-slot, planar, ball) by joint origins with limits and Drive Joints, As-built Joint, Rigid Group, Contact Sets (driving and motion studies stop where bodies in a set would pass through each other), Motion Study (joint values keyed along a timeline, playback, export of occurrence positions as JSON/CSV), Exploded views (automatic or by hand, shown without changing placements); interference, per-component physical properties; STEP with assembly structure; URDF export for robot simulators (links with meshes, mass and inertia; joint chains whose values match Drive Joints; docs/urdf.md). Physical properties now measure material-aware component/occurrence placements, descendants and repeated instances, including pending moves and body reassignment offsets; contact geometry and automatic exploded centres respect those offsets. Groundwork done: component tree, occurrences with transforms (instances, Paste New), world placement, active component as authoring frame, ground, Capture/Revert Position, moving bodies and sketches. UI: ASSEMBLE panel dialogs for New Component, Joint (snaps on faces, edges, circles and vertices; animated motion preview; offsets, flip, limits), As-built Joint, Joint Origin, Rigid Group, Drive Joints (live slider), Motion Link and Interference (overlaps shown red); joints in the timeline and the Browser | in progress | 32 |
 | M10 | Sheet metal: flange (base, edge, contour), hem, unfold/refold, convert, flat pattern + DXF, rules: done. PLASTIC enclosure subset: Boss, Rib, Web, Lip/Groove, Snap Fit, Rest, Plastic Rules (library, edit, assign; rule draft and clearance as feature defaults): done, tested against hand-computed geometry. UI: SHEET METAL and PLASTIC tabs in Fusion's layout with dialogs (live preview, Edit Feature, pre-selection) for Flange, Hem, Unfold/Refold, Convert, Sheet Metal Rules, Create Flat Pattern (flat view with bend lines, bend table CSV/JSON and DXF export with exact circle/arc/line cutouts), Boss, Lip/Groove, Snap Fit, Rest, Manage and Assign Plastic Rules; Fold (bend along a sketch line); flanges meeting at a corner closed at any angle with the rule's gap; edge flanges with their own angle and height per edge in one feature; corner reliefs (notch, round, rectangular, tear) chosen by the rule; Convert to Sheet Metal from a solid or shelled body by its bend edges (flat faces, sharp bends) | in progress | 36 |
 | M11 | 2D drawings | deferred | — |
 | M12 | Release: cross-platform packages, verification and deliberate publication implemented; original current-UI demo refreshed. Trusted distribution signing and broader performance work remain | in progress | 16 |
 | M14 | Configurations: a table of rows (parameter expressions and feature suppressions per row) switched with config.activate (undoable, all or nothing), kept through parameter renames and feature deletes (config.configure, config.table, config.column/row/activate). Per-row body materials and appearances (library looks, custom colour/opacity and clearing overrides), undoable activation and save/reopen: done. Ordered typed configuration rules, atomic validation and structured rule editing: done. Component appearance and certified semantic face style columns, atomic preview/apply and independent-copy remapping: done. Exact constructed sketch-side and immutable imported-face lineage now preserve legacy names and reject retargeting. Left: ambiguous shifted/two-sided caps | in progress | 4 |
 | M13 | Never lose work: atomic saves (temporary file, flush, rename; a crash at any moment leaves the old file or the new one) with the replaced version kept as `<file>.bak`; autosave of unsaved changes to the recovery folder every 5 minutes (preference) and after big operations, only when something changed; "Recover unsaved design?" on the next launch (`doc.recovery_list`, `doc.recover`, `doc.recovery_discard`); a kill-mid-save test (process killed while saving a 0.5 MB design 25 times). File format: `"format": "solidcraft/12"`, older formats upgraded step by step (`doc::format`), newer ones refused with a message, out-of-range numbers and broken placements refused; a corpus of designs saved by M0, components-era, joints-era and current builds (apps/solidcraft-cli/tests/corpus) that must open and evaluate as saved; damaged and hostile variants (truncation, bit flips, hostile values, removed keys, repeated features, deep nesting) never panic | done | 6 |

+## Physical material data
+
+- Physical material card validation (#923/#922) provides typed SI mechanical and
+  thermal data, per-property sources/conditions and isotropic/orthotropic stability
+  checks through read-only `material.properties.validate`. It does not assign or
+  persist properties, provide a solver or enable rendering; see
+  [the contract and staged follow-ups](docs/physical-material-cards.md).
+
+## Library foundations (#785, #786, #787)
+
+- Proposed phases cover offline bundled/project/user packs, physical materials and
+  appearances, editable wood mapping, and parameterized component/assembly families.
+  Stable identity/revision, copied design definitions, provenance and resource limits
+  apply from the first implementation. Existing material, appearance and standard-part
+  commands remain the application paths. See [the proposal](docs/book/src/dev/libraries.md)
+  for source/license review and acceptance gates. This is planning only: pack loading,
+  texture rendering and expanded component families are not implemented by this entry.
+
 ## Render foundation

+- A bounded cooperative Radiance RGBE input utility is available in L1 render;
+  it does not yet enable HDRI/PBR rendering or a document import command. See
+  [the input contract](docs/render-hdr-input.md) and #813 for integration work.
 - R1 adds renderer-independent backend/profile metadata, strict request resolution and
  bounded image/scratch admission checks, exposed by the read-only `render.backends`
  command. It describes the current CPU raster snapshot path without evaluating the model.
@@ -194,6 +215,9 @@ PCB / Package, Render, Animation, Simulation, Manufacture/CAM, Drawings.

 - Associative shell-face sketches require a unique certified planar source. Nested shell
  attachments and ambiguous coincident sources remain unsupported.
+- G2 fillets: exact quintic blends of straight edges between planar faces, with one perpendicular
+  planar end face at each end. The UI and `solid.fillet` expose `curvature` (alias `g2`); the size
+  is an equivalent circular setback. Curved faces/edges, sloped ends and corner junctions remain unsupported.
 - Fillets and chamfers: constant, variable-radius and chord-length fillets; a radius per edge,
  rounds next to earlier rounds of another radius, and smooth corner patches where three rounds
  meet (a sphere for equal radii); straight edges (convex or concave) between planar faces with perpendicular
@@ -211,7 +235,14 @@ PCB / Package, Render, Animation, Simulation, Manufacture/CAM, Drawings.
  edges between any two smooth sides (a branch pipe on a main pipe), by a rolling ball (the
  blend a rational B-spline through exact arcs), closed or ending at planar faces square to the
  edges, where straight or curved cap edges are trimmed to the contacts (the straight edge
-  between two overlapping extruded arcs).
+  between two overlapping extruded arcs); knife edges, where the two faces have opposite
+  normals (a wall that runs out tangent into a face: the ball that fits there); an edge that
+  runs out along an end face tangent to one side (the arc top edge of that wall), cut where the
+  blend meets it; rounds that end in an earlier round on curved faces, in any order (the rounds
+  of two edges at a vertex meet in a crease, as on a box), picked together or one after the
+  other, except a round after a round of the edge between the wall and a flat face that it
+  would run over; the three edges at a vertex of any smooth faces, of one radius, end in a
+  piece of sphere.
 - Booleans: prisms along one direction (plates with holes, slots, patterns of them, equal
  sections stacked end to end) are combined exactly in 2D. Qualified axial cuts preserve
  annular holes with overrun cutters, including inward Press Pull after a joined extrusion;
@@ -247,8 +278,12 @@ PCB / Package, Render, Animation, Simulation, Manufacture/CAM, Drawings.
  Sweeps along 3D sketch curves follow their polyline (smooth walls when the path is smooth).
 - Extend intersects exact ellipses and rational/high-degree splines without moving the line or
  circular support. Associative free-form offsets have a whole-span 0.002 mm normal-distance
-  certificate and refine within bounded node limits while retaining existing IDs. Singular,
-  self-intersecting and ambiguous curves refuse atomically; mixed junctions and nonsmooth
+  certificate and refine within bounded node limits while retaining existing IDs.
+  At the node limit, geometric certificate subdivisions accommodate unequal spline parameter
+  speeds without changing stored nodes or relaxing the distance tolerance (#971).
+  Associated offset fit nodes stay hidden from display, picking and snapping; dragging the
+  editable source updates the derived boundary live. Break Association restores point editing.
+  Singular, self-intersecting and ambiguous curves refuse atomically; mixed junctions and nonsmooth
  closed natural-spline seams remain limitations. New explicitly closed fit splines and closed
  offset outputs use periodic C2 interpolation, supporting repeated certified offsets; older
  natural splines are preserved. Clicking the starting fit point deliberately closes a new loop.
@@ -13349,11 +13349,11 @@ truck-topology 0.6.0: Apache-2.0 (https://github.com/ricosjp/truck)
 Bundled fonts (SIL Open Font License, Version 1.1)
 ================================================================================

- LiberationSans-Regular.ttf (crates/sketch/fonts/LiberationSans-Regular.ttf)
+- LiberationSans-Regular.ttf (assets/fonts/liberation-sans/LiberationSans-Regular.ttf)
  Copyright 2012 Red Hat, Inc. (Liberation Fonts 2.x; digitized data Google)
  Source: https://github.com/liberationfonts

- BIZUDPGothic-Regular.ttf (apps/solidcraft-web/fonts/BIZUDPGothic-Regular.ttf)
+- BIZUDPGothic-Regular.ttf (assets/fonts/biz-udp-gothic/BIZUDPGothic-Regular.ttf)
  Copyright 2022 The BIZ UDGothic Project Authors (https://github.com/googlefonts/morisawa-biz-ud-mincho)
  Source: https://github.com/googlefonts/morisawa-biz-ud-gothic

@@ -9,7 +9,8 @@
 //! solidcraft-cli commands                                     the command registry as JSON
 //! solidcraft-cli recipe <recipe.json>                         translate an oracle recipe to a script
 //! solidcraft-cli oracle <case-dir>...                         replay recipes and compare with expected.json
-//! solidcraft-cli mcp [--in design|script] [--connect HOST:PORT] MCP server on stdio (docs/mcp.md)
+//! solidcraft-cli mcp [--in design|script] [--connect HOST:PORT [--token T]] [--allow-path DIR]... [--allow-any-path]
+//!                                                             MCP server on stdio (docs/mcp.md)
 //! solidcraft-cli licences                                     SolidCraft's licence and the third-party licences
 //! solidcraft-cli icon --out F.png|F.ico [--size N]             the app icon (packaging; drawn, not a file)
 //! ```
@@ -25,7 +26,7 @@ mod spatial;
 use std::process::ExitCode;

 use serde_json::{Value, json};
-#[path = "../../app_icon.rs"]
+#[path = "../../../assets/icons/app/shared/source/app_icon.rs"]
 mod app_icon;

 use solidcraft_engine::Session;
@@ -43,7 +44,7 @@ const USAGE: &str = "usage:
  solidcraft-cli recipe <recipe.json>
  solidcraft-cli oracle <case-dir>... [--json]
  solidcraft-cli fuzz [--from N] [--count N] [--jobs J] [--timeout S] [--steps N] [--minimise] [--out DIR] [--report FILE]
-  solidcraft-cli mcp [--in design.solidcraft|script.json] [--connect 127.0.0.1:PORT]
+  solidcraft-cli mcp [--in design.solidcraft|script.json] [--connect 127.0.0.1:PORT [--token T]] [--allow-path DIR]... [--allow-any-path]
  solidcraft-cli crashes [list [--json] | show <id> | replay <id> | dir | clear [<id>]]
  solidcraft-cli licences
  solidcraft-cli icon --out icon.png [--size 256] | --out icon.ico
@@ -312,11 +313,27 @@ fn cmd_exec(args: &[String]) -> Result<(), String> {
 }

 /// MCP server on stdio: headless (optionally starting from a design or script) or bridged to
-/// a running app's control port. stdout carries only protocol messages.
+/// a running app's control port. stdout carries only protocol messages. Files the agent's tool
+/// calls reach are confined to `solidcraft_mcp::agent_scope` unless `--allow-any-path` is given.
 fn cmd_mcp(args: &[String]) -> Result<(), String> {
+    let scope = (!args.iter().any(|a| a == "--allow-any-path"))
+        .then(|| solidcraft_mcp::agent_scope(flags(args, "--allow-path").into_iter().map(std::path::PathBuf::from)));
+    if let Some(s) = &scope {
+        let roots: Vec<String> = s.roots().iter().map(|r| r.display().to_string()).collect();
+        eprintln!(
+            "solidcraft mcp: files limited to {} and the open design's folder (--allow-path DIR adds one, --allow-any-path lifts the limit)",
+            roots.join(", ")
+        );
+        let design_dir = flag(args, "--in")
+            .and_then(|p| std::path::Path::new(p).parent())
+            .map(|d| if d.as_os_str().is_empty() { std::path::Path::new(".") } else { d });
+        if let Some(why) = design_dir.and_then(solidcraft_engine::io::vfs::design_folder_refusal) {
+            eprintln!("solidcraft mcp: the design's folder is left out because {why}; add it with --allow-path if you mean it");
+        }
+    }
    let backend: Box<dyn solidcraft_mcp::Backend> = match (flag(args, "--connect"), flag(args, "--in")) {
        (Some(_), Some(_)) => return Err("mcp: use either --connect or --in, not both".into()),
-        (Some(addr), None) => Box::new(solidcraft_mcp::Remote::connect(addr).map_err(|e| {
+        (Some(addr), None) => Box::new(solidcraft_mcp::Remote::connect_with_token(addr, flag(args, "--token")).map_err(|e| {
            let port = addr.rsplit(':').next().filter(|p| p.parse::<u16>().is_ok()).unwrap_or("PORT");
            format!(
                "cannot connect to {addr}: {e}\nno SolidCraft app is listening there; start it with \
@@ -328,7 +345,7 @@ fn cmd_mcp(args: &[String]) -> Result<(), String> {
    };
    let stdin = std::io::stdin();
    let stdout = std::io::stdout();
-    solidcraft_mcp::Server::new(backend).serve(stdin.lock(), stdout.lock()).map_err(|e| e.to_string())
+    solidcraft_mcp::Server::new(backend).with_path_scope(scope).serve(stdin.lock(), stdout.lock()).map_err(|e| e.to_string())
 }

 /// `save-stress <path> <rounds>`: save a design of a few hundred kilobytes `rounds` times, its
@@ -393,10 +410,13 @@ fn cmd_bench_open(args: &[String]) -> Result<(), String> {
    let read_ms = t.elapsed().as_secs_f64() * 1000.0;
    println!("{}", json!({"step": "read", "ms": read_ms, "bytes": bytes.len()}));
    let t = std::time::Instant::now();
+    // The file as read, held until the timeline has evaluated it (as the import command does).
+    let mut read = None;
    let doc = if step {
        let imported = solidcraft_engine::io::step_import_feature(&bytes, path).map_err(|e| e.to_string())?;
        let mut doc = solidcraft_engine::doc::Document::new(&imported.name);
        doc.add_feature(imported.kind, Some(&imported.name)).map_err(|e| e.to_string())?;
+        read = Some(imported.import);
        doc
    } else {
        solidcraft_engine::io::read_design(&bytes).map_err(|e| e.to_string())?
@@ -408,12 +428,15 @@ fn cmd_bench_open(args: &[String]) -> Result<(), String> {
    }
    let t = std::time::Instant::now();
    let s = Session::new(doc);
+    drop(read);
    println!("{}", json!({"step": "evaluate", "ms": t.elapsed().as_secs_f64() * 1000.0}));
    for r in &s.model.results {
        println!("{}", json!({"step": "feature", "id": r.id, "name": r.name, "ms": r.ms, "error": r.error}));
    }
    let t = std::time::Instant::now();
    let st = s.world_state();
+    // As the desktop app prepares a design it opened.
+    st.warm_meshes(|| true);
    let triangles: usize = st.bodies.iter().map(|b| b.mesh().triangles.len()).sum();
    println!("{}", json!({"step": "mesh", "ms": t.elapsed().as_secs_f64() * 1000.0, "bodies": st.bodies.len(), "triangles": triangles}));
    Ok(())
@@ -639,7 +639,14 @@ fn action_matrix_worker() {
    }
    let list = actions(&s);
    let edit = driving_parameter(&s);
+    // Local runs only: `ACTION_MATRIX_ACTIONS=edge.fillet,edge.chamfer` tries just those actions
+    // (don't bless such a run), `ACTION_MATRIX_VALIDITY=1` adds each passing action's body check.
+    let only: Option<Vec<String>> = std::env::var("ACTION_MATRIX_ACTIONS").ok().map(|v| v.split(',').map(str::to_string).collect());
+    let validity = std::env::var_os("ACTION_MATRIX_VALIDITY").is_some();
    for (i, a) in list.iter().enumerate().skip(from) {
+        if only.as_ref().is_some_and(|o| !o.iter().any(|x| x == a.action)) {
+            continue;
+        }
        // Whole families of pieces are sampled together (see [`family`]).
        let k = key(&design, &family(&a.entity), a.action);
        if !stable_hash(&k).is_multiple_of(sample) {
@@ -650,12 +657,37 @@ fn action_matrix_worker() {
        let mut scratch = s.scratch();
        let r = perform(&mut scratch, &a.act, &before);
        let mut line = outcome(&design, &a.entity, a.action, &r, t.elapsed().as_millis());
+        if validity && r.is_ok() {
+            let st = scratch.model.state();
+            let bad: Vec<String> = st.bodies.iter().flat_map(|b| b.body.validity().into_iter().map(|v| format!("{}: {v}", b.name))).collect();
+            line["validity"] = json!(bad);
+        }
        // What was sent, for reproducing a failure (kept in the results, not the baseline).
        line["command"] = match &a.act {
            Act::Run(id, p) => json!({"command": id, "params": p}),
            Act::Project { plane, edge } => json!({"command": "sketch.project", "params": {"refs": [edge]}, "sketch_plane": plane}),
        };
        emit(line);
+        // With ACTION_MATRIX_UNFOLD, sheet metal must still unfold and fold back after the action.
+        if r.is_ok() && std::env::var_os("ACTION_MATRIX_UNFOLD").is_some() {
+            let t = Instant::now();
+            let sheets: Vec<String> = scratch.model.state().sheets.iter().map(|sh| sh.body.clone()).collect();
+            let mut r = Ok(());
+            for body in &sheets {
+                for id in ["sheet.unfold", "sheet.refold"] {
+                    if r.is_ok() {
+                        r = scratch
+                            .execute(id, &json!({"body": body}))
+                            .map(|_| ())
+                            .map_err(|e| (command_kind(&e).to_string(), format!("{body}: {e}")));
+                    }
+                }
+            }
+            if !sheets.is_empty() {
+                let unfold: &'static str = Box::leak(format!("{}+unfold", a.action).into_boxed_str());
+                emit(outcome(&design, &a.entity, unfold, &r, t.elapsed().as_millis()));
+            }
+        }
        // The edit round: a driving parameter changes; the new feature still resolves.
        if r.is_ok()
            && let Some((name, expr)) = &edit
@@ -1051,6 +1083,18 @@ fn a_through_hole_into_a_shelled_box_rim() {
    );
 }

+/// #559: a 6 mm hole drilled at an angle through a 920 mm prism, its through-all tool nearly
+/// 1.9 m long beside a thin bar it misses. The bar's cut came out empty: the tool filled too
+/// little of its own box for the sampled shortcut, and the boolean's tolerances (from the
+/// tool's length) were wider than the hole.
+#[test]
+fn an_oblique_through_hole_beside_a_thin_bar() {
+    reproduces(
+        Some("examples/regressions/oblique_cut_of_cylinder.json"),
+        json!([{"command": "solid.hole", "params": {"diameter": 6.0, "position": [296.66666666666663, -458.66666666666663, 848.7633333333333]}}]),
+    );
+}
+
 #[test]
 fn a_hole_through_a_sheet_metal_base() {
    let mut c: Vec<Value> = rectangle(json!("XY"), [0., 0.], [60., 40.]).into();
@@ -1061,6 +1105,29 @@ fn a_hole_through_a_sheet_metal_base() {
    reproduces(None, Value::Array(c));
 }

+/// `face.hole` on a rim of the sheet metal corpus (#560): drilled along the panel, the hole is a
+/// bore of that panel, and the part still unfolds and folds back.
+#[test]
+fn a_hole_drilled_into_a_sheet_metal_rim() {
+    // What the matrix sends: the face's point, the hole square into it.
+    for (design, at, diameter) in [
+        // The base's end rim of the L bracket, through to the other end.
+        ("typical/sheet-metal-bracket", [60.0, 7.777777777777779, 0.8333333333333333], 0.667),
+        // The end rim of a tray's wall, beside the corner.
+        ("oracle/69-sm-tray", [99.58333333333333, 4.267766952966369, 15.0], 0.333),
+    ] {
+        let Some((_, path)) = designs().into_iter().find(|(n, _)| n == design) else { panic!("no design {design}") };
+        let mut s = load(&path).unwrap();
+        let before = errors(&s);
+        let start = s.doc.features.len();
+        s.execute("solid.hole", &json!({"position": at, "diameter": diameter})).unwrap_or_else(|e| panic!("{design}: {e}"));
+        check(&s, start, &before).unwrap_or_else(|(kind, e)| panic!("{design}: {kind}: {e}"));
+        for id in ["sheet.unfold", "sheet.refold"] {
+            s.execute(id, &json!({})).unwrap_or_else(|e| panic!("{design} {id}: {e}"));
+        }
+    }
+}
+
 #[test]
 fn sketches_on_loft_and_sweep_faces() {
    let mut loft: Vec<Value> = rectangle(json!("XY"), [-20., -20.], [20., 20.]).into();
@@ -8,3 +8,9 @@ filehash = true
 [serve]
 addresses = ["127.0.0.1"]
 port = 8781
+
+# Offline use and updates: release builds get sw.js listing this build's files (xtask/src/web_offline.rs).
+[[hooks]]
+stage = "post_build"
+command = "cargo"
+command_arguments = ["xtask", "web-offline"]
@@ -20,17 +20,18 @@
  <meta name="twitter:image" content="https://bherbruck.github.io/solidcraft/og.png">
  <meta name="twitter:image:alt" content="SolidCraft: open-source parametric CAD built in Rust">
  <link data-trunk rel="rust" data-bin="solidcraft-web" data-wasm-opt="z" data-weak-refs />
-  <link data-trunk rel="copy-file" href="fonts/BIZUDPGothic-Regular.ttf" data-target-path="fonts" />
-  <link data-trunk rel="copy-file" href="fonts/OFL.txt" data-target-path="fonts" />
-  <style>
-    html, body { margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden; background: #e8ebf0; }
-    #solidcraft_canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
-    #solidcraft_loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
-      color: #4a5060; font: 14px system-ui, sans-serif; pointer-events: none; }
-  </style>
+  <link data-trunk rel="copy-file" href="../../assets/fonts/biz-udp-gothic/BIZUDPGothic-Regular.ttf" data-target-path="fonts" />
+  <link data-trunk rel="copy-file" href="../../assets/fonts/biz-udp-gothic/OFL.txt" data-target-path="fonts" />
+  <link data-trunk rel="css" href="../../assets/styles/web/loading.css" />
 </head>
 <body>
  <canvas id="solidcraft_canvas"></canvas>
  <div id="solidcraft_loading">Loading SolidCraft&hellip;</div>
+  <script>
+    // Offline use and updates (sw.js; written into release builds by `cargo xtask web-offline`).
+    if ("serviceWorker" in navigator) {
+      addEventListener("load", () => navigator.serviceWorker.register("sw.js").catch(() => {}));
+    }
+  </script>
 </body>
 </html>
@@ -331,22 +331,34 @@ mod web {
                };
                if installed {
                    log::info!("loaded web CJK font from {JAPANESE_FONT_PATH}");
-                } else {
+                } else if solidcraft_ui_egui::fonts::needs_cjk_font(&self.app.preferences.language) {
                    log::warn!("CJK font unavailable; showing English for this session");
                }
                self.font.finished(installed, &mut self.app.preferences.language);
                ctx.request_repaint();
            }
            if self.font.tick(&mut self.app.preferences.language) {
-                let slot = self.font_result.clone();
-                let ctx = ctx.clone();
-                wasm_bindgen_futures::spawn_local(async move {
-                    let res = fetch_font_bytes(JAPANESE_FONT_PATH).await;
-                    *slot.borrow_mut() = Some(res);
-                    ctx.request_repaint();
-                });
+                self.fetch_font(ctx);
            }
        }
+
+        /// CJK text on screen with no CJK font yet (an English UI showing a Japanese name):
+        /// fetch the font, so the text does not stay tofu (#720).
+        fn watch_text_for_font(&mut self, ctx: &egui::Context) {
+            if self.font.watching_text() && solidcraft_ui_egui::fonts::painted_cjk(ctx) && self.font.text_needs_font() {
+                self.fetch_font(ctx);
+            }
+        }
+
+        fn fetch_font(&self, ctx: &egui::Context) {
+            let slot = self.font_result.clone();
+            let ctx = ctx.clone();
+            wasm_bindgen_futures::spawn_local(async move {
+                let res = fetch_font_bytes(JAPANESE_FONT_PATH).await;
+                *slot.borrow_mut() = Some(res);
+                ctx.request_repaint();
+            });
+        }
    }

    impl eframe::App for Shell {
@@ -365,6 +377,7 @@ mod web {
            let ctx = ui.ctx().clone();
            self.file_panel(&ctx);
            self.recovery_prompt(&ctx);
+            self.watch_text_for_font(&ctx);
        }
        fn save(&mut self, storage: &mut dyn eframe::Storage) {
            // Persist the user's own language, not a session-only English fallback.
@@ -0,0 +1,227 @@
+// SolidCraft's service worker: the web app keeps working offline and updates itself.
+//
+// `cargo xtask web-offline` (Trunk's post_build hook) writes the build into the line below: the
+// version (workspace version + a hash of every built file) and the files to keep, each with its
+// SHA-256, and the same as `build.json` next to it. Files the app only fetches when it needs
+// them (the CJK font) aren't kept: they come from the network. Every download is checked
+// against its SHA-256: a deployment that lands mid-download (another build's `index.html`) fails
+// the download instead of mixing into the kept build. A new build changes this file, so the
+// browser installs the new worker, which keeps the whole new build before taking over.
+//
+// A launch only ever starts a build whose every file is kept, so a half-downloaded update can't
+// break it. It asks for `build.json` (waiting at most NAVIGATE_TIMEOUT_MS): offline, slow or
+// unchanged, the kept build starts; when a new build is deployed, it is downloaded first
+// (waiting at most UPDATE_TIMEOUT_MS; the download goes on in the background after that) and
+// started. When the site has no `build.json` (the app was removed), launches go to the network,
+// the kept build answering when that fails. Each page then gets its files from the build it
+// started (remembered in PAGES), never from another build with a file of the same name.
+//
+// A cache is only deleted when nothing uses it: a download holds its lock (Web Locks, shared,
+// in any tab or worker; the browser releases it when the download ends or its worker stops), and
+// an open page uses the build it started. Then unfinished downloads are dropped, and so are
+// builds replaced by a newer worker (RETIRED). The origin is shared with other apps (github.io)
+// and other copies of this one (the release zip works from any path): only caches named after
+// this worker's path (CACHE_PREFIX…, PAGES) are ever touched.
+//
+// Unbuilt (VERSION "dev", as debug builds get it), the worker retires: it drops what a release
+// build kept and unregisters, so `trunk serve` after `trunk serve --release --no-autoreload`
+// shows the development build. Deploying this file unbuilt switches the worker off for everyone.
+/* @build */ const VERSION = "dev", FILES = [];
+const RETIRE = VERSION === "dev";
+
+const PATH = new URL(self.registration.scope).pathname;
+const CACHE_PREFIX = `solidcraft-app ${PATH} `;
+const CACHE = CACHE_PREFIX + VERSION;
+/** Which build each open page started: page id → cache name (or NETWORK). */
+const PAGES = `solidcraft-app-pages ${PATH}`;
+/** A page that came from the network gets its files from there too. */
+const NETWORK = "network";
+const NAVIGATE_TIMEOUT_MS = 4000;
+const UPDATE_TIMEOUT_MS = 20000;
+/** The entry that marks a cache as holding its whole build. */
+const COMPLETE = "build-complete";
+/** The entry that marks a build replaced by a newer worker. */
+const RETIRED = "build-retired";
+/** A page remembered this recently may still be loading (not yet listed among the clients). */
+const PAGE_LOADING_MS = 30 * 1000;
+
+const url = (file) => new URL(file, self.registration.scope).href;
+const has = (name, entry) => caches.match(url(entry), { cacheName: name }).then(Boolean);
+
+/** Run `fn` while using the cache `name`: it isn't deleted meanwhile. */
+const using = (name, fn) => navigator.locks.request(name, { mode: "shared" }, fn);
+
+/** Delete the cache `name` if nothing is using it and `unwanted()` (asked once no one can start to) agrees. */
+const drop = (name, unwanted) =>
+  navigator.locks.request(name, { ifAvailable: true }, async (free) => free && (await unwanted()) && caches.delete(name));
+
+const hex = (buffer) => Array.from(new Uint8Array(buffer), (b) => b.toString(16).padStart(2, "0")).join("");
+
+/**
+ * Keep every file of a build (an earlier partial download is resumed); resolves to its cache's
+ * name. The first file that fails cancels the others.
+ */
+function keep(version, files) {
+  const name = CACHE_PREFIX + version;
+  return using(name, async () => {
+    const cache = await caches.open(name);
+    await cache.delete(url(RETIRED)); // Back in use (a rollback).
+    if (await has(name, COMPLETE)) return name;
+    const cancel = new AbortController();
+    const results = await Promise.allSettled(
+      files.map(async ({ file, sha256 }) => {
+        try {
+          if (await cache.match(url(file))) return;
+          // `no-cache`: revalidate with the server, so a stale HTTP-cached page never mixes builds.
+          const response = await fetch(new Request(url(file), { cache: "no-cache" }), { signal: cancel.signal });
+          if (!response.ok) throw new Error(`${file}: HTTP ${response.status}`);
+          const body = await response.arrayBuffer();
+          if (hex(await crypto.subtle.digest("SHA-256", body)) !== sha256) throw new Error(`${file}: not this build's`);
+          await cache.put(url(file), new Response(body, { headers: response.headers }));
+        } catch (error) {
+          cancel.abort();
+          throw error;
+        }
+      }),
+    );
+    const failed = results.find((r) => r.status === "rejected");
+    if (failed) throw failed.reason;
+    await cache.put(url(COMPLETE), new Response(version));
+    return name;
+  });
+}
+
+const pageEntry = (id) => url(`~page/${encodeURIComponent(id)}`);
+
+/** Remember which build a page started. */
+async function started(id, build) {
+  if (!id) return;
+  const record = JSON.stringify({ build, at: Date.now() });
+  await (await caches.open(PAGES)).put(pageEntry(id), new Response(record));
+}
+
+/** The build a page started; a page started before it was remembered gets this worker's. */
+async function startedBy(id) {
+  const response = id ? await caches.match(pageEntry(id), { cacheName: PAGES }) : null;
+  return response ? (await response.json()).build : CACHE;
+}
+
+/** The builds open pages use (pages closed since are forgotten). */
+async function inUse() {
+  const open = new Set((await self.clients.matchAll({ includeUncontrolled: true })).map((c) => c.id));
+  const pages = await caches.open(PAGES);
+  const builds = new Set();
+  for (const request of await pages.keys()) {
+    const id = decodeURIComponent(request.url.split("~page/")[1] ?? "");
+    const record = await pages.match(request).then((r) => r?.json()).catch(() => null);
+    if (record && (open.has(id) || Date.now() - record.at < PAGE_LOADING_MS)) builds.add(record.build);
+    else await pages.delete(request);
+  }
+  return builds;
+}
+
+/** Drop unfinished downloads nothing is using, and replaced builds no open page uses. */
+async function sweep() {
+  for (const name of await caches.keys()) {
+    if (!name.startsWith(CACHE_PREFIX) || name === CACHE) continue;
+    await drop(name, async () => !(await has(name, COMPLETE)) || ((await has(name, RETIRED)) && !(await inUse()).has(name)));
+  }
+}
+
+self.addEventListener("install", (event) => {
+  // Clean up first: a page open for days sees updates (and failed ones) without any launch.
+  const install = () => sweep().catch(() => {}).then(() => keep(VERSION, FILES));
+  event.waitUntil(RETIRE ? self.skipWaiting() : install().then(() => self.skipWaiting()));
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(
+    (async () => {
+      if (RETIRE) {
+        for (const name of await caches.keys()) if (name.startsWith(CACHE_PREFIX) || name === PAGES) await caches.delete(name);
+        return self.registration.unregister();
+      }
+      for (const name of await caches.keys()) {
+        if (name.startsWith(CACHE_PREFIX) && name !== CACHE) await (await caches.open(name)).put(url(RETIRED), new Response(""));
+      }
+      await sweep();
+      await self.clients.claim();
+    })(),
+  );
+});
+
+/** The promise's value, or null when it fails or takes longer than `ms`. */
+function within(ms, promise) {
+  return Promise.race([promise.catch(() => null), new Promise((resolve) => setTimeout(resolve, ms, null))]);
+}
+
+/** No app is deployed here any more (the server says `build.json` doesn't exist). */
+const GONE = "gone";
+
+/** The deployed build's version and files, GONE, or null (unknown: offline, failing, invalid). */
+async function deployed() {
+  const response = await fetch(url("build.json"), { cache: "no-cache" });
+  if (response.status === 404 || response.status === 410) return GONE;
+  const build = response.ok ? await response.json() : null;
+  const valid = build && typeof build.version === "string" && Array.isArray(build.files);
+  return valid && build.files.every((f) => typeof f.file === "string" && typeof f.sha256 === "string") ? build : null;
+}
+
+/** Keep the worker alive for `promise` (allowed while the launch is being answered). */
+function extend(event, promise) {
+  try {
+    event.waitUntil(promise.catch(() => {}));
+  } catch {
+    // The event has ended; the work goes on while the worker runs.
+  }
+}
+
+/** A launch: the start page of a complete build (whatever query the URL has: `?sample`), and that build. */
+async function launch(event) {
+  const kept = await caches.match(url("index.html"), { cacheName: CACHE });
+  if (!kept) return [await fetch(event.request), NETWORK]; // Nothing kept yet (the first visit).
+  extend(event, sweep());
+  const build = await within(NAVIGATE_TIMEOUT_MS, deployed());
+  if (build === GONE) {
+    const page = await fetch(event.request).catch(() => null);
+    return page && page.ok ? [page, NETWORK] : [kept, CACHE];
+  }
+  if (!build || build.version === VERSION) return [kept, CACHE];
+  const download = keep(build.version, build.files);
+  extend(event, download);
+  const name = await within(UPDATE_TIMEOUT_MS, download);
+  const page = name && (await caches.match(url("index.html"), { cacheName: name }));
+  return page ? [page, name] : [kept, CACHE];
+}
+
+/**
+ * A launch that fails unexpectedly still starts the kept build (or asks the network). A newer
+ * worker only takes over once the launch has ended, by when its page is remembered (in use).
+ */
+async function launchOrKept(event) {
+  let page, build;
+  try {
+    [page, build] = await launch(event);
+  } catch {
+    page = await caches.match(url("index.html"), { cacheName: CACHE }).catch(() => null);
+    build = page ? CACHE : NETWORK;
+    page = page || (await fetch(event.request));
+  }
+  await started(event.resultingClientId, build).catch(() => {});
+  return page;
+}
+
+/** A page's files come from the build it started, else the network. */
+async function asset(event) {
+  const build = await startedBy(event.clientId).catch(() => CACHE);
+  const kept = build === NETWORK ? null : await caches.match(event.request, { cacheName: build, ignoreSearch: true });
+  return kept || fetch(event.request);
+}
+
+self.addEventListener("fetch", (event) => {
+  const request = event.request;
+  if (RETIRE || request.method !== "GET" || new URL(request.url).origin !== self.location.origin) return;
+  const path = request.url.split(/[?#]/)[0];
+  const start = request.mode === "navigate" && (path === url("") || path === url("index.html"));
+  event.respondWith(start ? launchOrKept(event) : asset(event));
+});
@@ -18,6 +18,7 @@ egui = { workspace = true }
 serde_json = { workspace = true }
 log = { workspace = true }
 rfd = { workspace = true }
+getrandom = "0.3"

 [target.'cfg(any(target_os = "windows", target_os = "linux"))'.dependencies]
 quick-xml = { workspace = true }
@@ -1,61 +1,17 @@
 #![forbid(unsafe_code)]
-#[path = "../app_icon.rs"]
-mod app_icon;

 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    println!("cargo:rerun-if-changed=../app_icon.rs");
+    let icon = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("../../assets/icons/app/windows/exports/solidcraft-executable.ico");
+    println!("cargo:rerun-if-changed={}", icon.display());
    println!("cargo:rerun-if-changed=build.rs");
    if std::env::var("CARGO_CFG_TARGET_OS")? != "windows" {
        return Ok(());
    }
    let out = std::path::PathBuf::from(std::env::var_os("OUT_DIR").ok_or("missing OUT_DIR")?);
-    let sizes = [16usize, 24, 32, 48, 64, 128, 256];
-    let mut images = Vec::new();
-    for size in sizes {
-        let rgba = app_icon::rgba(size)?;
-        // ICO DIB: bottom-up BGRA plus a padded one-bit transparency mask.
-        let mask_stride = size.div_ceil(32) * 4;
-        let mut dib = Vec::new();
-        dib.extend_from_slice(&40u32.to_le_bytes());
-        dib.extend_from_slice(&(size as i32).to_le_bytes());
-        dib.extend_from_slice(&((size * 2) as i32).to_le_bytes());
-        dib.extend_from_slice(&1u16.to_le_bytes());
-        dib.extend_from_slice(&32u16.to_le_bytes());
-        dib.extend_from_slice(&[0; 24]);
-        for row in rgba.chunks_exact(size * 4).rev() {
-            for p in row.as_chunks::<4>().0.iter() {
-                dib.extend_from_slice(&[p[2], p[1], p[0], p[3]]);
-            }
-        }
-        for row in rgba.chunks_exact(size * 4).rev() {
-            let mut mask = vec![0u8; mask_stride];
-            for (x, p) in row.as_chunks::<4>().0.iter().enumerate() {
-                if p[3] == 0 {
-                    mask[x / 8] |= 0x80 >> (x % 8);
-                }
-            }
-            dib.extend_from_slice(&mask);
-        }
-        images.push((size, dib));
-    }
-    let mut ico = vec![0, 0, 1, 0];
-    ico.extend_from_slice(&(images.len() as u16).to_le_bytes());
-    let mut offset = 6 + 16 * images.len();
-    for (size, data) in &images {
-        let dim = if *size == 256 { 0 } else { *size as u8 };
-        ico.extend_from_slice(&[dim, dim, 0, 0, 1, 0, 32, 0]);
-        ico.extend_from_slice(&(data.len() as u32).to_le_bytes());
-        ico.extend_from_slice(&(offset as u32).to_le_bytes());
-        offset += data.len();
-    }
-    for (_, data) in images {
-        ico.extend_from_slice(&data);
-    }
-    let icon = out.join("solidcraft.ico");
-    std::fs::write(&icon, ico)?;
+    let copy = out.join("solidcraft.ico");
+    std::fs::copy(icon, &copy)?;
    let rc = out.join("solidcraft.rc");
-    std::fs::write(&rc, format!("1 ICON \"{}\"\n", icon.display().to_string().replace('\\', "/")))?;
-    // Missing resource tools are a build error, rather than silently shipping a generic icon.
+    std::fs::write(&rc, format!("1 ICON \"{}\"\n", copy.display().to_string().replace('\\', "/")))?;
    embed_resource::compile_for(&rc, ["solidcraft"], embed_resource::NONE).manifest_required()?;
    Ok(())
 }
@@ -9,18 +9,39 @@ use std::time::Duration;

 use serde_json::{Value, json};
 use solidcraft_engine::MAX_LINE;
+use solidcraft_engine::control_auth;
 use solidcraft_ui_egui::ControlRequest;

-/// Connections served at once. The channel has no authentication beyond being bound to
-/// loopback, so a flood must not be able to spawn threads without end.
+/// Connections served at once, so a flood must not be able to spawn threads without end.
 const MAX_CONNECTIONS: usize = 16;
 /// Lines that are not JSON before the connection is closed, so garbage cannot loop forever.
 const MAX_BAD_LINES: usize = 8;

 static OPEN: AtomicUsize = AtomicUsize::new(0);
+/// The token file this launch wrote, removed when the app ends.
+static TOKEN_FILE: std::sync::OnceLock<std::path::PathBuf> = std::sync::OnceLock::new();
+
+/// A new random token: 32 bytes from the operating system, as hex.
+fn new_token() -> Option<String> {
+    let mut bytes = [0u8; 32];
+    getrandom::fill(&mut bytes).ok()?;
+    Some(bytes.iter().map(|b| format!("{b:02x}")).collect())
+}
+
+/// Remove this launch's token file (at exit).
+pub fn remove_token_file() {
+    if let Some(p) = TOKEN_FILE.get() {
+        let _ = std::fs::remove_file(p);
+    }
+}

 pub fn start(port: u16, ctx: egui::Context) -> Receiver<ControlRequest> {
    let (tx, rx) = channel::<ControlRequest>();
+    // Every connection must show the token before anything runs (docs/control-protocol.md).
+    let Some(token) = control_auth::env_token().or_else(new_token) else {
+        eprintln!("solidcraft: control server not started: no random token available");
+        return rx;
+    };
    let listener = match TcpListener::bind(("127.0.0.1", port)) {
        Ok(l) => l,
        Err(e) => {
@@ -28,7 +49,23 @@ pub fn start(port: u16, ctx: egui::Context) -> Receiver<ControlRequest> {
            return rx;
        }
    };
-    eprintln!("solidcraft: control server listening on 127.0.0.1:{port}");
+    match control_auth::token_path(port) {
+        Some(path) => match control_auth::write_token_file(&path, &token) {
+            Ok(()) => {
+                eprintln!("solidcraft: control server listening on 127.0.0.1:{port} (token in {})", path.display());
+                let _ = TOKEN_FILE.set(path);
+            }
+            Err(e) => eprintln!(
+                "solidcraft: control server listening on 127.0.0.1:{port}, but its token file {} could not be written ({e}); \
+                 clients need SOLIDCRAFT_CONTROL_TOKEN",
+                path.display()
+            ),
+        },
+        None => {
+            eprintln!("solidcraft: control server listening on 127.0.0.1:{port}; no data folder for its token, clients need SOLIDCRAFT_CONTROL_TOKEN")
+        }
+    }
+    let token = std::sync::Arc::new(token);
    std::thread::spawn(move || {
        for stream in listener.incoming().flatten() {
            if OPEN.fetch_add(1, Ordering::Relaxed) >= MAX_CONNECTIONS {
@@ -39,8 +76,9 @@ pub fn start(port: u16, ctx: egui::Context) -> Receiver<ControlRequest> {
            }
            let tx = tx.clone();
            let ctx = ctx.clone();
+            let token = token.clone();
            std::thread::spawn(move || {
-                serve(stream, tx, ctx);
+                serve(stream, &token, tx, ctx);
                OPEN.fetch_sub(1, Ordering::Relaxed);
            });
        }
@@ -80,11 +118,28 @@ fn read_line(r: &mut impl BufRead, max: usize) -> std::io::Result<Option<Vec<u8>
    }
 }

-fn serve(stream: TcpStream, tx: Sender<ControlRequest>, ctx: egui::Context) {
+/// The reply to a connection that didn't show the token; the connection is then closed.
+fn unauthorized() -> Value {
+    json!({"ok": false, "error": "unauthorized: send the control token as \"token\" (see docs/control-protocol.md)"})
+}
+
+/// Refuse the connection: the reply, then the end of what we send, then what the client had
+/// already sent read and dropped (a little, briefly). Closing a socket with unread input resets
+/// the connection, and a reset can reach the client before it has read the refusal.
+fn refuse(out: &mut TcpStream, reader: &mut BufReader<TcpStream>) {
+    use std::io::Read;
+    let _ = writeln!(out, "{}", unauthorized());
+    let _ = out.shutdown(std::net::Shutdown::Write);
+    let _ = reader.get_ref().set_read_timeout(Some(Duration::from_millis(500)));
+    let _ = std::io::copy(&mut reader.by_ref().take(64 * 1024), &mut std::io::sink());
+}
+
+fn serve(stream: TcpStream, token: &str, tx: Sender<ControlRequest>, ctx: egui::Context) {
    let Ok(read) = stream.try_clone() else { return };
    let mut out = stream;
    let mut reader = BufReader::new(read);
    let mut bad = 0usize;
+    let mut authenticated = false;
    loop {
        let line = match read_line(&mut reader, MAX_LINE) {
            Ok(Some(l)) => String::from_utf8_lossy(&l).into_owned(),
@@ -99,20 +154,36 @@ fn serve(stream: TcpStream, tx: Sender<ControlRequest>, ctx: egui::Context) {
        }
        let reply = match serde_json::from_str::<Value>(&line) {
            Ok(msg) => {
+                // The first request must carry the token; later ones on the same connection may.
+                if !authenticated {
+                    match msg.get("token").and_then(Value::as_str) {
+                        Some(t) if control_auth::tokens_match(t, token) => authenticated = true,
+                        _ => {
+                            refuse(&mut out, &mut reader);
+                            break;
+                        }
+                    }
+                }
                let id = msg.get("id").cloned().unwrap_or(Value::Null);
                let method = msg.get("method").and_then(Value::as_str).unwrap_or("").to_string();
                let params = msg.get("params").cloned().unwrap_or(json!({}));
+                // A batch replaces many short requests: the whole of it may take long (#743).
+                let wait = Duration::from_secs(if method == "engine.batch" { 3600 } else { 60 });
                let (req, rrx) = ControlRequest::new(method, params);
                if tx.send(req).is_err() {
                    break;
                }
                ctx.request_repaint();
-                let mut r = rrx.recv_timeout(Duration::from_secs(60)).unwrap_or_else(|_| json!({"ok": false, "error": "timeout"}));
+                let mut r = rrx.recv_timeout(wait).unwrap_or_else(|_| json!({"ok": false, "error": "timeout"}));
                if let Some(o) = r.as_object_mut() {
                    o.insert("id".into(), id);
                }
                r
            }
+            Err(_) if !authenticated => {
+                refuse(&mut out, &mut reader);
+                break;
+            }
            Err(e) => {
                bad += 1;
                json!({"ok": false, "error": format!("bad JSON: {e}")})
@@ -131,6 +202,62 @@ fn serve(stream: TcpStream, tx: Sender<ControlRequest>, ctx: egui::Context) {
 mod tests {
    use super::*;

+    /// #205: a connection runs nothing until a request carries the launch's token; a wrong or
+    /// missing token, or garbage, is refused and the connection closed. Once shown, the token
+    /// need not be repeated on that connection.
+    #[test]
+    fn requests_run_only_after_the_token() {
+        use std::io::Read;
+        let token = "0123456789abcdef0123456789abcdef";
+        let listener = TcpListener::bind("127.0.0.1:0").unwrap();
+        let addr = listener.local_addr().unwrap();
+        let (tx, rx) = channel::<ControlRequest>();
+        let ran = std::sync::Arc::new(std::sync::Mutex::new(Vec::<String>::new()));
+        let seen = ran.clone();
+        std::thread::spawn(move || {
+            for req in rx {
+                seen.lock().unwrap().push(req.method.clone());
+                let _ = req.reply.send(json!({"ok": true, "result": null}));
+            }
+        });
+        std::thread::spawn(move || {
+            for stream in listener.incoming().flatten() {
+                let tx = tx.clone();
+                std::thread::spawn(move || serve(stream, token, tx, egui::Context::default()));
+            }
+        });
+        let session = |lines: &[String]| {
+            let mut s = TcpStream::connect(addr).unwrap();
+            s.set_read_timeout(Some(Duration::from_secs(10))).unwrap();
+            for l in lines {
+                let _ = writeln!(s, "{l}");
+            }
+            let _ = s.shutdown(std::net::Shutdown::Write);
+            let mut text = String::new();
+            let _ = s.read_to_string(&mut text);
+            text.lines().map(|l| serde_json::from_str::<Value>(l).unwrap()).collect::<Vec<_>>()
+        };
+        for first in [
+            json!({"id": 1, "method": "app.quit", "params": {"force": true}}).to_string(),
+            json!({"id": 1, "method": "app.quit", "token": "0123456789abcdef0123456789abcdee"}).to_string(),
+            json!({"id": 1, "method": "app.quit", "token": "0123"}).to_string(),
+            json!({"id": 1, "method": "app.quit", "token": 7}).to_string(),
+            "not json".to_string(),
+        ] {
+            let replies = session(&[first.clone(), json!({"id": 2, "method": "app.quit", "token": token}).to_string()]);
+            assert_eq!(replies.len(), 1, "{first}: closed after refusing: {replies:?}");
+            assert!(replies[0]["error"].as_str().is_some_and(|e| e.starts_with("unauthorized")), "{first}: {replies:?}");
+        }
+        assert!(ran.lock().unwrap().is_empty(), "nothing ran without the token");
+        let replies = session(&[
+            json!({"id": 1, "method": "ui.inspect", "token": token}).to_string(),
+            json!({"id": 2, "method": "engine.commands"}).to_string(),
+        ]);
+        assert_eq!(replies.len(), 2, "{replies:?}");
+        assert!(replies.iter().all(|r| r["ok"] == true), "{replies:?}");
+        assert_eq!(*ran.lock().unwrap(), ["ui.inspect", "engine.commands"]);
+    }
+
    /// A request longer than the cap is refused instead of allocated.
    #[test]
    fn lines_past_the_cap_are_refused() {
@@ -13,7 +13,7 @@
 #![forbid(unsafe_code)]

 #[cfg(not(target_os = "macos"))]
-#[path = "../../app_icon.rs"]
+#[path = "../../../assets/icons/app/shared/source/app_icon.rs"]
 mod app_icon;
 mod control_server;
 #[cfg(any(target_os = "windows", target_os = "linux"))]
@@ -286,7 +286,7 @@ fn main() -> eframe::Result {
            b.with_x11();
        }));
    }
-    eframe::run_native(
+    let result = eframe::run_native(
        "SolidCraft",
        options,
        Box::new(move |cc| {
@@ -344,7 +344,9 @@ fn main() -> eframe::Result {
                space_mouse,
            }))
        }),
-    )
+    );
+    control_server::remove_token_file();
+    result
 }

 /// Whether to run through XWayland rather than native Wayland. winit has no file drag-and-drop
@@ -1,41 +1,98 @@
-# SolidCraft macOS icon
+# Application resources

-`SolidCraft.icon/` is the approved Icon Composer source, containing separate
-grid and solid SVG layers and the owner's appearance settings. The saturated
-blue solid has transparent geometry cutouts instead of painted edge lines.
-The solid and grid are both scaled to 90%, with separate Default and Dark grid artwork.
-Icon Composer supplies the system backdrop and Mono material effects.
-Artwork is original and attributed in `ATTRIBUTION.md`.
+`assets/` is the design resource home for SolidCraft.
+[ATTRIBUTION.md](../ATTRIBUTION.md) is the file inventory and provenance record.
+Keep one editable master per resource and place shipped derivatives in `exports/`.

-`Assets.car` is compiled by Apple's `actool` and supplies the layered icon on
-macOS 26 and later. It is checked in so the existing release workflow can still
-package on older Xcode runners. After editing and saving `SolidCraft.icon`,
-regenerate the catalog with Xcode 26 or later from the repository root:
-
-```sh
-mkdir -p target/macos-icon
-xcrun actool assets/SolidCraft.icon \
-  --compile target/macos-icon --platform macosx \
-  --minimum-deployment-target 11.0 --app-icon SolidCraft \
-  --output-partial-info-plist target/macos-icon/icon-info.plist \
-  --output-format human-readable-text
-cp target/macos-icon/Assets.car assets/Assets.car
-cp target/macos-icon/SolidCraft.icns assets/icon.icns
+```text
+assets/
+  icons/
+    app/
+      shared/source/                 # original Rust mark and executable ICO encoder
+      macos/source/SolidCraft.icon/   # approved Composer project and linked SVGs
+      macos/exports/                 # paired Assets.car and icon.icns
+      windows/exports/               # executable DIB ICO and installer PNG ICO
+      linux/exports/hicolor/         # Linux/FreeBSD package images, 16–512 px
+    ui/source/                       # original drawing library and other UI glyphs
+  branding/web/source/og.png          # shared social preview card
+  styles/ui/palettes.rs               # light/dark defaults
+  styles/web/loading.css             # web loading/canvas styles
+  appearances/library.rs             # built-in visual presets
+  materials/library.rs               # physical defaults and colours
+  shaders/viewport.wgsl               # original viewport shader
+  fonts/{liberation-sans,biz-udp-gothic}/ # unmodified fonts and OFL licences
+  locales/{en,de,ja,ko}.json          # shared offline catalogs
+  platforms/{macos,linux,windows}/    # bundle, freedesktop and WiX templates
+  archive/icons/macos-v1/
+    source/icon.vectorcraft          # earlier editable work, retained
+    exports/                         # all historical SVG, PNG and iconset exports
 ```

-`icon.icns` is the older-macOS fallback generated by the same Apple compiler
-from the approved composition, retaining its layer sizes and positions.
-Regenerate both compiled resources together with the commands above.
-`icon.vectorcraft`, `icon.svg`, `icon.png` and `icon.iconset/` retain the earlier
-VectorCraft artwork; packaging uses the Icon Composer compilation instead.
+## Editing and regeneration

-Only `packaging/macos/package.sh` consumes these resources. Its existing signed
-app/DMG workflow copies the catalog and ICNS into `Contents/Resources`, and
-`Info.plist` references `SolidCraft` through `CFBundleIconName` and
-`CFBundleIconFile`. The macOS viewport opts out of eframe's runtime bitmap so
-Finder, the Dock and the application switcher use the bundle icon. Other
-platforms retain the existing code-drawn icon and packaging.
+[UI artwork](icons/ui/README.md) identifies the drawing masters and their consumers.
+Edit geometry and IDs together in the original Rust source and review changes in
+both application themes. Palettes and model presets are also editable Rust data.

-Design references: [Apple app-icon HIG](https://developer.apple.com/design/human-interface-guidelines/app-icons)
-and [Icon Composer documentation](https://developer.apple.com/documentation/xcode/creating-your-app-icon-using-icon-composer).
-No Apple artwork is shipped.
+The current macOS master is `icons/app/macos/source/SolidCraft.icon/`, including
+its linked SVG layers and appearance settings. The earlier VectorCraft document
+is preserved in the archive. No other native design projects were available for
+the current UI set or preview card. Keep any future `.vectorcraft`, `.ai` or other
+native work and linked inputs under that resource's `source/work/`, with an
+attribution row; retain the editable document alongside its exports.
+
+Regenerate all exports of the shared Windows/Linux/FreeBSD mark together:
+
+```sh
+cargo xtask app-icons
+```
+
+For macOS, use Xcode with Icon Composer support:
+
+```sh
+mkdir -p target/resources/macos-icon
+xcrun actool assets/icons/app/macos/source/SolidCraft.icon \
+  --compile target/resources/macos-icon --platform macosx \
+  --minimum-deployment-target 11.0 --app-icon SolidCraft \
+  --output-partial-info-plist target/resources/macos-icon/icon-info.plist \
+  --output-format human-readable-text
+cp target/resources/macos-icon/Assets.car assets/icons/app/macos/exports/Assets.car
+cp target/resources/macos-icon/SolidCraft.icns assets/icons/app/macos/exports/icon.icns
+```
+
+Review and commit source changes and required exports together. Temporary renders,
+tool caches and package staging belong under ignored `target/` or `dist/`.
+Normal builds use the committed exports and require no design applications.
+The CLI still supports arbitrary PNG/ICO exports with `solidcraft-cli icon`.
+
+## Platform bindings
+
+| Platform | Resources and output paths |
+| --- | --- |
+| macOS | Composer master and paired exports; bundle installs `Assets.car` and `SolidCraft.icns` |
+| Windows executable | `solidcraft-executable.ico`: original DIB/mask representations at 16/24/32/48/64/128/256 px |
+| Windows installer | `solidcraft.ico`: PNG representations at 16/20/24/32/40/48/64/128/256 px; `SOLIDCRAFT_ICONS` override retained |
+| Linux, Nix, deb/rpm, tar, Flatpak, Snap | Copy canonical hicolor images; icon name stays `ai.storyteller.solidcraft` |
+| AppImage | Uses the Linux 256 px image and `.DirIcon` alias |
+| FreeBSD | Shares Linux hicolor images and freedesktop metadata |
+| Web | HTML/Trunk stays in `apps/solidcraft-web/`; copies Japanese font/licence to `fonts/` and uses the collected CSS; no favicon/PWA icon currently exists |
+| Docs and link previews | `xtask book` copies the shared card to the existing `/solidcraft/og.png` public path |
+
+## Code and provenance
+
+Resources remain compiled by their owning layer through existing APIs:
+`ui-egui::icons::paint` and `Tokens` at L5, model presets in L2 `doc`, and sketch
+fonts at L1. State, projection, interaction, commands and GPU bindings stay in
+their current modules. Embedded data uses `CARGO_MANIFEST_DIR`; application code
+needs no runtime resource registry or repository lookup.
+
+`cargo xtask assets` requires an exact attribution row for every collected file
+except Markdown documentation, and continues checking file assets elsewhere in
+the repository. This includes native work, Rust masters, catalogs, shaders and
+platform templates. Packaging selects explicit current files and fails when
+required inputs are absent. Archived artwork has no production consumers.
+
+Dependency-owned egui fonts and vendored renderer shaders stay with their
+libraries; their licences remain in `THIRD-PARTY-LICENSES.txt` and `ATTRIBUTION.md`.
+System fonts, optional packs, user fonts/canvases/decals/materials and native OS
+controls retain external ownership. Root licence/notice texts stay canonical.
@@ -0,0 +1,23 @@
+//! Built-in model appearances: names, sRGB colours and metalness.
+pub const LIBRARY: [(&str, [u8; 3], f64); 20] = [
+    ("Aluminum - Satin", [204, 208, 214], 1.0),
+    ("Aluminum - Anodized Black", [44, 46, 50], 1.0),
+    ("Aluminum - Anodized Blue", [52, 92, 160], 1.0),
+    ("Steel - Satin", [158, 164, 172], 1.0),
+    ("Stainless Steel - Brushed", [186, 191, 198], 1.0),
+    ("Cast Iron", [104, 104, 110], 1.0),
+    ("Brass - Polished", [208, 172, 88], 1.0),
+    ("Copper", [204, 122, 80], 1.0),
+    ("Titanium", [150, 148, 158], 1.0),
+    ("ABS - White", [236, 236, 230], 1.0),
+    ("ABS - Black", [36, 36, 38], 1.0),
+    ("ABS - Red", [196, 40, 40], 1.0),
+    ("ABS - Blue", [40, 90, 186], 1.0),
+    ("ABS - Yellow", [236, 196, 40], 1.0),
+    ("ABS - Green", [52, 150, 80], 1.0),
+    ("Rubber - Black", [28, 28, 28], 1.0),
+    ("Glass - Clear", [190, 220, 228], 0.25),
+    ("Glass - Smoked", [90, 96, 104], 0.45),
+    ("Wood - Oak", [190, 146, 92], 1.0),
+    ("Paint - Gloss White", [246, 246, 244], 1.0),
+];
@@ -0,0 +1,48 @@
+//! Original executable ICO encoder: DIB images and transparency masks.
+use super::app_icon;
+
+pub fn encode() -> Result<Vec<u8>, Box<dyn std::error::Error>> {
+    let sizes = [16usize, 24, 32, 48, 64, 128, 256];
+    let mut images = Vec::new();
+    for size in sizes {
+        let rgba = app_icon::rgba(size)?;
+        // ICO DIB: bottom-up BGRA plus a padded one-bit transparency mask.
+        let mask_stride = size.div_ceil(32) * 4;
+        let mut dib = Vec::new();
+        dib.extend_from_slice(&40u32.to_le_bytes());
+        dib.extend_from_slice(&(size as i32).to_le_bytes());
+        dib.extend_from_slice(&((size * 2) as i32).to_le_bytes());
+        dib.extend_from_slice(&1u16.to_le_bytes());
+        dib.extend_from_slice(&32u16.to_le_bytes());
+        dib.extend_from_slice(&[0; 24]);
+        for row in rgba.chunks_exact(size * 4).rev() {
+            for p in row.as_chunks::<4>().0.iter() {
+                dib.extend_from_slice(&[p[2], p[1], p[0], p[3]]);
+            }
+        }
+        for row in rgba.chunks_exact(size * 4).rev() {
+            let mut mask = vec![0u8; mask_stride];
+            for (x, p) in row.as_chunks::<4>().0.iter().enumerate() {
+                if p[3] == 0 {
+                    mask[x / 8] |= 0x80 >> (x % 8);
+                }
+            }
+            dib.extend_from_slice(&mask);
+        }
+        images.push((size, dib));
+    }
+    let mut ico = vec![0, 0, 1, 0];
+    ico.extend_from_slice(&(images.len() as u16).to_le_bytes());
+    let mut offset = 6 + 16 * images.len();
+    for (size, data) in &images {
+        let dim = if *size == 256 { 0 } else { *size as u8 };
+        ico.extend_from_slice(&[dim, dim, 0, 0, 1, 0, 32, 0]);
+        ico.extend_from_slice(&(data.len() as u32).to_le_bytes());
+        ico.extend_from_slice(&(offset as u32).to_le_bytes());
+        offset += data.len();
+    }
+    for (_, data) in images {
+        ico.extend_from_slice(&data);
+    }
+    Ok(ico)
+}
@@ -0,0 +1,22 @@
+# UI artwork
+
+Edit the Rust drawing masters in `source/`; the UI crate compiles them through
+`crates/ui-egui/src/icons.rs`. Use the 24 × 24 grid and semantic ink/fill/accent
+colours. Icon IDs and their geometry live together in `source/icons.rs`;
+unknown IDs retain the existing fallback. Add new artwork there without
+maintaining a separate ID registry.
+
+| Source | Artwork | Consumers |
+| --- | --- | --- |
+| `icons.rs` | Toolbar, browser, menu and constraint icons | `icons::paint` |
+| `glyphs.rs` | Brand mark, captions, transport, badges, pin, caret, disclosure, radial centre and removal cross | toolbar, titlebar, timeline, browser, menus |
+| `navigation.rs` | Signed axes, cube faces/labels and arrows | viewport/navigation cube |
+| `markers.rs` | Constraint mappings/letters, snap markers and dimension arrowheads | sketch, assembly and dimensions |
+| `pointer.rs` | Agent pointer and tag | agent cursor |
+
+Widget state, layout, projection, picking and commands stay with their widgets.
+Review drawing changes in the actual application in both light and dark themes.
+No separate native design projects were available for this set. Preserve any
+future native work and linked inputs under `source/work/`, with attribution.
+Original artwork is MIT OR Apache-2.0; caption geometry retains VectorCraft
+attribution in the root `ATTRIBUTION.md`.
@@ -0,0 +1,158 @@
+//! Collected glyph artwork. Caption geometry adapted from VectorCraft (MIT OR Apache-2.0).
+use crate::titlebar::Caption;
+use egui::{Color32, Pos2, Rect, Stroke, Ui, pos2, vec2};
+
+pub(crate) fn transport_glyph(p: &egui::Painter, c: egui::Pos2, what: &str, col: Color32) {
+    let tri = |dir: f32, dx: f32| {
+        let pts = vec![pos2(c.x + dx - 4.0 * dir, c.y - 5.0), pos2(c.x + dx + 4.0 * dir, c.y), pos2(c.x + dx - 4.0 * dir, c.y + 5.0)];
+        p.add(egui::Shape::convex_polygon(pts, col, Stroke::NONE));
+    };
+    let bar = |dx: f32| p.line_segment([pos2(c.x + dx, c.y - 5.0), pos2(c.x + dx, c.y + 5.0)], Stroke::new(1.6, col));
+    match what {
+        "first" => {
+            bar(-5.0);
+            tri(-1.0, 1.0);
+        }
+        "back" => tri(-1.0, 0.0),
+        "forward" => tri(1.0, 0.0),
+        _ => {
+            tri(1.0, -1.0);
+            bar(5.0);
+        }
+    }
+}
+
+pub(crate) fn paint_glyph(ui: &Ui, c: Caption, maximized: bool, at: egui::Pos2, s: Stroke) {
+    let p = ui.painter();
+    let g = Rect::from_center_size(at, vec2(10.0, 10.0));
+    match c {
+        Caption::Minimize => {
+            p.line_segment([g.left_center(), g.right_center()], s);
+        }
+        // Restore: a front square with the corner of the one behind it.
+        Caption::Maximize if maximized => {
+            let front = Rect::from_min_max(g.min + vec2(0.0, 2.0), g.max - vec2(2.0, 0.0));
+            p.rect_stroke(front, 0.0, s, egui::StrokeKind::Middle);
+            p.line(vec![g.min + vec2(2.0, 2.0), g.min + vec2(2.0, 0.0), g.right_top(), g.max - vec2(0.0, 2.0), g.max - vec2(2.0, 2.0)], s);
+        }
+        Caption::Maximize => {
+            p.rect_stroke(g, 0.0, s, egui::StrokeKind::Middle);
+        }
+        Caption::Close => {
+            p.line_segment([g.left_top(), g.right_bottom()], s);
+            p.line_segment([g.right_top(), g.left_bottom()], s);
+        }
+    }
+}
+
+pub(crate) fn badge(p: &egui::Painter, r: Rect, name: &str, c: Color32) {
+    let s = Stroke::new(1.3, c);
+    match name {
+        "lock" => {
+            let body = Rect::from_min_max(pos2(r.left() + 1.5, r.center().y - 0.5), pos2(r.right() - 1.5, r.bottom() - 0.5));
+            p.rect_filled(body, 1.5, c);
+            let top = pos2(r.center().x, r.top() + 4.0);
+            p.add(egui::Shape::line(
+                (0..=8)
+                    .map(|k| {
+                        let a = std::f32::consts::PI * (k as f32 / 8.0);
+                        pos2(top.x - 3.2 * a.cos(), top.y - 3.2 * a.sin() + 1.0)
+                    })
+                    .chain([pos2(top.x + 3.2, body.top())])
+                    .collect(),
+                s,
+            ));
+            p.line_segment([pos2(top.x - 3.2, top.y + 1.0), pos2(top.x - 3.2, body.top())], s);
+        }
+        "pin" => {
+            let head = pos2(r.center().x + 2.0, r.top() + 4.0);
+            p.circle_filled(head, 3.2, c);
+            p.line_segment([head, pos2(r.left() + 1.5, r.bottom() - 1.0)], Stroke::new(1.6, c));
+        }
+        _ => {}
+    }
+}
+
+pub(crate) fn pin_icon(p: &egui::Painter, r: Rect, on: bool, col: Color32) {
+    let c = r.center();
+    let (sin, cos) = if on { (0.0, 1.0) } else { std::f32::consts::FRAC_PI_4.sin_cos() };
+    // Local coordinates: the pin points down, its head on top.
+    let at = |x: f32, y: f32| c + vec2(x * cos - y * sin, x * sin + y * cos);
+    let head = vec![at(-2.5, -7.0), at(2.5, -7.0), at(3.0, -2.0), at(-3.0, -2.0)];
+    let stroke = Stroke::new(1.4, col);
+    if on {
+        p.add(egui::Shape::convex_polygon(head, col, stroke));
+    } else {
+        p.add(egui::Shape::closed_line(head, stroke));
+    }
+    p.line_segment([at(-5.5, -2.0), at(5.5, -2.0)], stroke);
+    p.line_segment([at(0.0, -2.0), at(0.0, 7.0)], stroke);
+}
+
+pub(crate) fn caret(p: &egui::Painter, c: egui::Pos2, col: Color32) {
+    p.add(egui::Shape::convex_polygon(vec![pos2(c.x - 3.5, c.y - 2.0), pos2(c.x + 3.5, c.y - 2.0), pos2(c.x, c.y + 2.5)], col, Stroke::NONE));
+}
+
+pub(crate) fn brand_mark(p: &egui::Painter, c: Pos2) {
+    let s = 20.0 / 412.217;
+    let m = |pts: &[(f32, f32)]| -> Vec<egui::Pos2> { pts.iter().map(|&(x, y)| pos2(c.x + (x - 178.5) * s, c.y + (y - 206.1) * s)).collect() };
+    // egui only fills convex shapes, so each face is a few overlapping convex pieces.
+    let face = |col: Color32, pts: &[(f32, f32)]| {
+        p.add(egui::Shape::convex_polygon(m(pts), col, Stroke::NONE));
+    };
+    let (light, mid, dark) = (Color32::from_rgb(96, 158, 236), Color32::from_rgb(58, 136, 238), Color32::from_rgb(55, 108, 197));
+    face(light, &[(3.5, 105.9), (177.0, 5.8), (263.4, 55.6), (263.8, 156.0), (177.0, 406.4)]);
+    face(light, &[(177.0, 206.1), (263.8, 156.0), (350.5, 206.2), (350.5, 306.3), (177.0, 406.4)]);
+    face(mid, &[(3.5, 105.9), (177.0, 206.1), (177.0, 406.4)]);
+    face(mid, &[(3.5, 105.9), (3.5, 205.7), (90.3, 256.2), (177.0, 206.1)]);
+    face(mid, &[(177.0, 206.1), (90.3, 256.2), (90.0, 356.2), (177.0, 406.4)]);
+    face(dark, &[(264.1, 155.8), (177.0, 206.1), (177.0, 406.4), (263.8, 256.2)]);
+    face(dark, &[(263.8, 256.2), (350.5, 206.2), (350.5, 306.3), (177.0, 406.4)]);
+    face(dark, &[(177.0, 206.1), (177.0, 406.4), (350.5, 306.3)]);
+    face(dark, &[(263.8, 55.9), (263.8, 156.0), (177.1, 105.9)]);
+    // White edge lines.
+    let edge = Stroke::new(10.0 * s, Color32::WHITE);
+    let line = |pts: &[(f32, f32)]| {
+        p.add(egui::Shape::line(m(pts), edge));
+    };
+    line(&[(263.8, 55.9), (177.1, 105.9), (263.8, 156.0), (263.8, 256.2), (350.6, 206.1)]);
+    line(&[(5.0, 105.9), (178.5, 206.1), (178.5, 406.4)]);
+    line(&[(177.0, 206.1), (263.8, 156.0)]);
+    p.add(egui::Shape::closed_line(
+        m(&[
+            (178.5, 5.8),
+            (5.0, 105.9),
+            (5.0, 206.1),
+            (91.7, 256.2),
+            (91.7, 356.4),
+            (178.5, 406.4),
+            (352.0, 306.3),
+            (352.0, 206.1),
+            (265.2, 156.0),
+            (265.2, 55.9),
+        ]),
+        edge,
+    ));
+}
+
+pub(crate) fn cross(p: &egui::Painter, r: Rect, s: Stroke) {
+    p.line_segment([r.left_top(), r.right_bottom()], s);
+    p.line_segment([r.right_top(), r.left_bottom()], s);
+}
+pub(crate) fn radial_centre(p: &egui::Painter, c: Pos2, direction: Option<(egui::Vec2, bool)>, t: crate::theme::Tokens) {
+    p.circle(c, 15.0, t.panel.gamma_multiply(0.92), Stroke::new(1.0, t.border));
+    if let Some((d, enabled)) = direction {
+        p.line_segment([c + d * 6.0, c + d * 15.0], Stroke::new(3.0, if enabled { t.accent } else { t.border }));
+    } else {
+        p.circle_filled(c, 3.0, t.text_dim);
+    }
+}
+
+pub(crate) fn disclosure(p: &egui::Painter, ar: Rect, open: bool, ink: Color32) {
+    let pts = if open {
+        vec![pos2(ar.left() + 2.0, ar.top() + 4.0), pos2(ar.right() - 2.0, ar.top() + 4.0), pos2(ar.center().x, ar.bottom() - 3.0)]
+    } else {
+        vec![pos2(ar.left() + 4.0, ar.top() + 2.0), pos2(ar.right() - 3.0, ar.center().y), pos2(ar.left() + 4.0, ar.bottom() - 2.0)]
+    };
+    p.add(egui::Shape::convex_polygon(pts, ink, Stroke::NONE));
+}
@@ -0,0 +1,86 @@
+//! Constraint, assembly snap and dimension marker artwork.
+use crate::dialogs_assembly::SnapKind;
+use crate::theme::Tokens;
+use egui::{Color32, Pos2, Stroke, vec2};
+
+pub(crate) fn snap(painter: &egui::Painter, c: Pos2, tip: Option<Pos2>, kind: SnapKind, col: Color32, tag: Option<&str>) {
+    // A dark halo under every stroke keeps the glyph readable on light and dark faces alike.
+    let halo = Stroke::new(4.5, Color32::from_black_alpha(150));
+    let white = Stroke::new(1.5, Color32::WHITE);
+    if let Some(tip) = tip {
+        let d = (tip - c).normalized();
+        let n = vec2(-d.y, d.x);
+        let head = vec![tip + d * 2.0, tip - d * 9.0 + n * 5.0, tip - d * 9.0 - n * 5.0];
+        painter.line_segment([c, tip], halo);
+        painter.add(egui::Shape::convex_polygon(head.clone(), Color32::TRANSPARENT, halo));
+        painter.line_segment([c, tip], Stroke::new(2.0, col));
+        painter.add(egui::Shape::convex_polygon(head, col, Stroke::NONE));
+    }
+    let shape = |fill: Color32, stroke: Stroke, grow: f32| -> egui::Shape {
+        match kind {
+            SnapKind::FaceCenter => egui::Shape::rect_filled(egui::Rect::from_center_size(c, vec2(12.0 + grow, 12.0 + grow)), 1.5, fill),
+            SnapKind::CircleCenter => egui::Shape::circle_filled(c, 7.0 + grow / 2.0, fill),
+            SnapKind::EdgeMid => {
+                let r = 8.0 + grow / 2.0;
+                egui::Shape::convex_polygon(vec![c + vec2(0.0, -r), c + vec2(r * 0.93, r * 0.7), c + vec2(-r * 0.93, r * 0.7)], fill, stroke)
+            }
+            SnapKind::Vertex => {
+                let r = 7.5 + grow / 2.0;
+                egui::Shape::convex_polygon(vec![c + vec2(0.0, -r), c + vec2(r, 0.0), c + vec2(0.0, r), c + vec2(-r, 0.0)], fill, stroke)
+            }
+        }
+    };
+    painter.add(shape(Color32::from_black_alpha(150), Stroke::NONE, 4.0));
+    painter.add(shape(col, Stroke::NONE, 0.0));
+    match kind {
+        SnapKind::FaceCenter => {
+            painter.rect_stroke(egui::Rect::from_center_size(c, vec2(12.0, 12.0)), 1.5, white, egui::StrokeKind::Middle);
+        }
+        SnapKind::CircleCenter => {
+            painter.circle_stroke(c, 7.0, white);
+            painter.line_segment([c - vec2(4.5, 0.0), c + vec2(4.5, 0.0)], Stroke::new(1.2, Color32::WHITE));
+            painter.line_segment([c - vec2(0.0, 4.5), c + vec2(0.0, 4.5)], Stroke::new(1.2, Color32::WHITE));
+        }
+        SnapKind::EdgeMid | SnapKind::Vertex => {
+            painter.add(shape(Color32::TRANSPARENT, white, 0.0));
+        }
+    }
+    // What it snaps to (hovered), or which component it is (picked): a small label.
+    if let Some(tag) = tag {
+        let t = Tokens::get();
+        let font = egui::FontId::proportional(11.5);
+        let g = painter.layout_no_wrap(tag.to_string(), font, t.text);
+        let at = c + vec2(12.0, 10.0);
+        let r = egui::Rect::from_min_size(at, g.size()).expand2(vec2(5.0, 2.0));
+        painter.rect(r, 3.0, t.panel.gamma_multiply(0.92), Stroke::new(1.0, col), egui::StrokeKind::Inside);
+        painter.galley(at, g, t.text);
+    }
+}
+pub(crate) fn glyph_icon(name: &str) -> Option<&'static str> {
+    Some(match name {
+        "Coincident" => "c_coincident",
+        "Parallel" => "c_parallel",
+        "Perpendicular" => "c_perpendicular",
+        "Collinear" => "c_collinear",
+        "Tangent" => "c_tangent",
+        "Smooth" => "c_smooth",
+        "Equal" => "c_equal",
+        "Concentric" => "c_concentric",
+        "MidPoint" => "c_midpoint",
+        "Symmetry" => "c_symmetry",
+        "Fix" => "c_fix",
+        _ => return None,
+    })
+}
+pub(crate) fn glyph_letter(name: &str) -> &'static str {
+    match name {
+        "Horizontal" => "H",
+        "Vertical" => "V",
+        _ => "?",
+    }
+}
+pub(crate) fn dimension_arrow(painter: &egui::Painter, t: Pos2, back: Pos2, col: Color32) {
+    let d = (t - back).normalized();
+    let n = vec2(-d.y, d.x);
+    painter.add(egui::Shape::convex_polygon(vec![t, t - d * 9.0 + n * 3.0, t - d * 9.0 - n * 3.0], col, Stroke::NONE));
+}
@@ -0,0 +1,167 @@
+//! Navigation drawing definitions. Camera projection and picking remain in the UI widgets.
+use crate::theme::Tokens;
+use egui::{Align2, Color32, FontId, Pos2, Rect, Shape, Stroke, pos2, vec2};
+use solidcraft_engine::geom::Vec3;
+pub(crate) struct Facet {
+    pub(crate) direction: Vec3,
+    pub(crate) points: Vec<Pos2>,
+    pub(crate) outer_edges: Vec<bool>,
+    pub(crate) centre: Pos2,
+    pub(crate) label: String,
+    pub(crate) text_axes: Option<(egui::Vec2, egui::Vec2)>,
+    pub(crate) depth: f64,
+}
+// Private marker for label meshes with atlas-pixel UVs. The output hook replaces
+// it with the font texture before any renderer sees the frame.
+pub(crate) const LABEL_PIXELS: egui::TextureId = egui::TextureId::User(u64::from_le_bytes(*b"cubetext"));
+
+struct LabelAtlas;
+
+impl egui::plugin::Plugin for LabelAtlas {
+    fn debug_name(&self) -> &'static str {
+        "navigation cube label atlas"
+    }
+
+    fn output_hook(&mut self, ctx: &egui::Context, output: &mut egui::FullOutput) {
+        let size = ctx.fonts(|f| f.font_image_size());
+        let normalize = vec2(1.0 / size[0].max(1) as f32, 1.0 / size[1].max(1) as f32);
+        for shape in &mut output.shapes {
+            if let Shape::Mesh(mesh) = &mut shape.shape
+                && mesh.texture_id == LABEL_PIXELS
+            {
+                let mesh = std::sync::Arc::make_mut(mesh);
+                mesh.texture_id = egui::TextureId::default();
+                for v in &mut mesh.vertices {
+                    v.uv = (v.uv.to_vec2() * normalize).to_pos2();
+                }
+            }
+        }
+    }
+}
+
+/// Warp the font mesh into the projected face, so labels turn with the model.
+pub(crate) fn face_text(painter: &egui::Painter, face: &Facet, ink: Color32, font_size: f32) {
+    let Some((r, down)) = face.text_axes else { return };
+    let opacity = ((face.depth - 0.18) / 0.17).clamp(0.0, 1.0) as f32;
+    if opacity <= 0.0 {
+        return;
+    }
+    let ink = ink.gamma_multiply(opacity);
+    let galley = painter.layout_no_wrap(face.label.clone(), FontId::proportional(font_size), ink);
+    let centre = galley.rect.center();
+    // Keep atlas-pixel UVs until the frame is complete: another label or widget
+    // can grow the atlas after this mesh is created, invalidating early UVs.
+    painter.ctx().add_plugin(LabelAtlas);
+    let text = Shape::Text(egui::epaint::TextShape::new(Pos2::ZERO, galley, ink));
+    let atlas = painter.ctx().fonts(|f| f.font_image_size());
+    let primitives =
+        painter.ctx().tessellate(vec![egui::epaint::ClippedShape { clip_rect: Rect::EVERYTHING, shape: text }], painter.ctx().pixels_per_point());
+    for primitive in primitives {
+        if let egui::epaint::Primitive::Mesh(mut mesh) = primitive.primitive {
+            mesh.texture_id = LABEL_PIXELS;
+            for v in &mut mesh.vertices {
+                v.uv = pos2(v.uv.x * atlas[0] as f32, v.uv.y * atlas[1] as f32);
+                let local = v.pos - centre;
+                v.pos = face.centre + r * local.x + down * (local.y * 1.35);
+            }
+            painter.add(Shape::mesh(mesh));
+        }
+    }
+}
+
+pub(crate) fn paint_cube(painter: &egui::Painter, faces: &[Facet], hovered: Option<usize>, t: Tokens, labels: bool, scale: f32) {
+    // A shared, opaque triangle mesh has no antialiasing fringes between facets.
+    // Per-polygon fringes and miter joins overlap as a face becomes edge-on.
+    let mut fill_mesh = egui::epaint::Mesh::default();
+    let mut edges: Vec<(Pos2, Pos2, usize, bool)> = Vec::new();
+    let hovered_direction = hovered.and_then(|i| faces.get(i)).map(|f| f.direction);
+    for face in faces {
+        let base = t.cube_face;
+        let shade = (0.72 + 0.28 * face.depth.min(1.0)) as f32;
+        let highlighted = hovered_direction == Some(face.direction);
+        let fill = if highlighted {
+            t.cube_hover
+        } else {
+            Color32::from_rgb((f32::from(base.r()) * shade) as u8, (f32::from(base.g()) * shade) as u8, (f32::from(base.b()) * shade) as u8)
+        };
+        let centre = fill_mesh.vertices.len() as u32;
+        fill_mesh.colored_vertex(face.centre, fill);
+        for &p in &face.points {
+            fill_mesh.colored_vertex(p, fill);
+        }
+        for (j, (&a, &b)) in face.points.iter().zip(face.points.iter().cycle().skip(1)).take(face.points.len()).enumerate() {
+            fill_mesh.add_triangle(centre, centre + 1 + j as u32, centre + 1 + ((j + 1) % face.points.len()) as u32);
+            // Coplanar picking regions have no visible seams. Only actual cube
+            // edges and the hovered target's boundary receive an outline.
+            let outer = face.outer_edges.get(j).copied().unwrap_or(false);
+            if !highlighted && !outer {
+                continue;
+            }
+            if let Some(edge) = edges
+                .iter_mut()
+                .find(|(p, q, _, _)| (p.distance_sq(a) < 1e-6 && q.distance_sq(b) < 1e-6) || (p.distance_sq(b) < 1e-6 && q.distance_sq(a) < 1e-6))
+            {
+                edge.2 += usize::from(highlighted);
+                edge.3 |= outer;
+            } else {
+                edges.push((a, b, usize::from(highlighted), outer));
+            }
+        }
+    }
+    painter.add(Shape::mesh(fill_mesh));
+    for (a, b, highlights, outer) in edges {
+        // Two highlighted coplanar patches share an internal subdivision, not
+        // a target boundary. Actual cube edges remain visible across faces.
+        if !outer && highlights != 1 {
+            continue;
+        }
+        let highlighted = highlights > 0;
+        painter.line_segment([a, b], Stroke::new(1.0, if highlighted { t.accent } else { t.cube_border }));
+    }
+    if labels {
+        for face in faces {
+            face_text(painter, face, t.cube_text, 14.0 * scale);
+        }
+    }
+}
+pub(crate) fn arrow(painter: &egui::Painter, at: Pos2, direction: egui::Vec2, hover: bool, t: Tokens) {
+    let side = vec2(-direction.y, direction.x);
+    painter.add(Shape::convex_polygon(
+        vec![at + direction * 7.0, at - direction * 5.0 + side * 7.0, at - direction * 5.0 - side * 7.0],
+        if hover { t.accent_soft } else { t.cube_face },
+        Stroke::new(1.0, if hover { t.accent } else { t.cube_border }),
+    ));
+}
+pub(crate) fn curved_arrow(painter: &egui::Painter, at: Pos2, clockwise: bool, hover: bool, t: Tokens, scale: f32) {
+    let (start, end) =
+        if clockwise { (-std::f32::consts::FRAC_PI_4 + 0.12, 0.0) } else { (-std::f32::consts::FRAC_PI_4 - 0.12, -std::f32::consts::FRAC_PI_2) };
+    let points: Vec<_> = (0..=16)
+        .map(|i| {
+            let angle = egui::lerp(start..=end, f32::from(i as u8) / 16.0);
+            at + vec2(angle.cos(), angle.sin()) * (32.0 * scale)
+        })
+        .collect();
+    painter.add(Shape::line(points.clone(), Stroke::new(5.0 * scale, if hover { t.accent } else { t.cube_border })));
+    painter.add(Shape::line(points.clone(), Stroke::new(3.0 * scale, if hover { t.accent_soft } else { t.cube_face })));
+    if let Some(tip) = points.last() {
+        let sign = if clockwise { 1.0 } else { -1.0 };
+        arrow(painter, *tip, vec2(-end.sin(), end.cos()) * (sign * scale), hover, t);
+    }
+}
+pub(crate) const AXIS_RADIUS: f32 = 11.0;
+pub(crate) fn axis_tip(painter: &egui::Painter, c: Pos2, name: &str, d: &Vec3, at: Pos2, depth: f64, hovered: bool, t: Tokens) {
+    let col = if d.x != 0.0 {
+        solidcraft_engine::view::colors::AXIS_X
+    } else if d.y != 0.0 {
+        solidcraft_engine::view::colors::AXIS_Y
+    } else {
+        solidcraft_engine::view::colors::AXIS_Z
+    };
+    let col = Color32::from_rgb(col.0, col.1, col.2);
+    let positive = !name.starts_with('-');
+    let ink = if depth < -0.01 { col.gamma_multiply(0.55) } else { col };
+    painter.line_segment([c, at], Stroke::new(if positive { 2.0 } else { 1.0 }, ink));
+    painter.circle_filled(at, AXIS_RADIUS, if hovered { t.accent_soft } else { t.overlay });
+    painter.circle_stroke(at, AXIS_RADIUS, Stroke::new(if hovered { 2.0 } else { 1.0 }, if hovered { t.accent } else { ink }));
+    painter.text(at, Align2::CENTER_CENTER, name.to_uppercase(), FontId::proportional(11.0), ink);
+}
@@ -0,0 +1,14 @@
+//! Original agent pointer and label. Animation stays with the UI controller.
+use egui::{Color32, FontId, Pos2, Shape, Stroke, vec2};
+pub(crate) const AGENT: Color32 = Color32::from_rgb(168, 85, 247);
+pub(crate) fn paint(painter: &egui::Painter, p: Pos2) {
+    // An arrow pointer, tip at `p`.
+    let pts: Vec<Pos2> =
+        [(0.0, 0.0), (0.0, 17.0), (4.5, 13.0), (7.5, 20.0), (10.5, 18.8), (7.5, 12.0), (13.0, 12.0)].iter().map(|(x, y)| p + vec2(*x, *y)).collect();
+    painter.add(Shape::convex_polygon(pts.clone(), AGENT, Stroke::NONE));
+    painter.add(Shape::closed_line(pts, Stroke::new(1.5, Color32::WHITE)));
+    let label = painter.layout_no_wrap("Agent".into(), FontId::proportional(11.0), Color32::WHITE);
+    let r = egui::Rect::from_min_size(p + vec2(15.0, 18.0), label.size() + vec2(10.0, 4.0));
+    painter.rect_filled(r, 4.0, AGENT);
+    painter.galley(r.min + vec2(5.0, 2.0), label, Color32::WHITE);
+}
@@ -0,0 +1,701 @@
+{
+  "browser.body_name": "Körper {number}",
+  "browser.component_name": "Komponente {number}",
+  "browser.parameters": "Parameter ({count})",
+  "browser.precision": "Genauigkeit: {precision}",
+  "browser.sketch_name": "Skizze {number}",
+  "browser.units": "Einheiten: {units}",
+  "dialog.custom_axis": "↖ Eigene Achse",
+  "dialog.edit_title": "{title} bearbeiten",
+  "dialog.select": "↖ Auswählen",
+  "dialog.selected_count": "↖ {count} ausgewählt",
+  "dialog.step": "Schritt",
+  "dialog.selection_step": "{step} von {total}: {input} auswählen",
+  "dialog.selection_guidance": "Wählen Sie eine Eingabe aus, um sie zu ändern. Klicken Sie auf ausgewählte Objekte, um sie zu entfernen; Strg/Cmd-Klick schaltet sie ebenfalls um. Prüfen Sie die Vorschau und drücken Sie dann OK.",
+  "document.save_changes": "Änderungen in {name} speichern?",
+  "document.unsaved_changes": "{name} enthält ungespeicherte Änderungen. Wenn Sie nicht speichern, gehen sie verloren.",
+  "settings.msaa_applies_on_restart": "Die Kantenglättung wird beim nächsten Start von SolidCraft übernommen",
+  "settings.msaa_reset": "{setting}: {requested}× wird von diesem Grafikgerät nicht unterstützt; jetzt {reset}× (unterstützt: {supported}).",
+  "settings.msaa_unsupported": "Von diesem Grafikgerät nicht unterstützt",
+  "settings.reset_intro": "Diese Einstellungen funktionieren auf diesem Computer nicht und würden den Start von SolidCraft verhindern. Sie wurden daher geändert:",
+  "settings.reset_title": "Einstellungen wurden geändert",
+  "sketch.degrees_of_freedom": "{count} Freiheitsgrade",
+  "sketch.draw_curves": "Als {linetype} zeichnen",
+  "sketch.make_selection": "Auswahl als {linetype} markieren",
+  "ui.1_degree_of_freedom": "1 Freiheitsgrad",
+  "ui.3d_sketch": "3D-Skizze",
+  "ui.about": "Über",
+  "ui.activate": "Aktivieren",
+  "ui.active_component": "Aktive Komponente",
+  "ui.agent_cursor": "Agent-Cursor",
+  "ui.agent_cursor_speed": "Agent-Cursor-Geschwindigkeit",
+  "ui.all": "Alle",
+  "ui.analysis": "Analyse",
+  "ui.angle": "Winkel",
+  "ui.angle_decimals": "Winkel-Dezimalstellen",
+  "ui.animate_view_changes": "Ansichtsänderungen animieren",
+  "ui.animation": "Animation",
+  "ui.animation_speed": "Animationsgeschwindigkeit",
+  "ui.anti_aliasing": "Kantenglättung",
+  "ui.apply": "Anwenden",
+  "ui.arc": "Kreisbogen",
+  "ui.assemble": "Zusammenbau",
+  "ui.autosave_every": "Autospeichern alle",
+  "ui.axes": "Achsen",
+  "ui.axis": "Achse",
+  "ui.base_point": "Basispunkt",
+  "ui.bodies": "Körper",
+  "ui.box": "Block",
+  "ui.break": "Unterbrechen",
+  "ui.cancel": "Abbrechen",
+  "ui.canvases": "Kanvas",
+  "ui.center": "Mittelpunkt",
+  "ui.centerline": "Mittellinie",
+  "ui.chain": "Kette",
+  "ui.chamfer": "Abschrägung",
+  "ui.chamfer_type": "Fasentyp",
+  "ui.change_workspace": "Arbeitsbereich wechseln",
+  "ui.chord_length": "Sehnenlänge",
+  "ui.curvature_g2": "Krümmungsstetig (G2)",
+  "ui.equivalent_radius": "Äquivalenter Radius",
+  "ui.circle": "Kreis",
+  "ui.circular_pattern": "Radiales Muster",
+  "ui.clear_recent": "Zuletzt verwendet leeren",
+  "ui.clear_the_selection": "Auswahl aufheben",
+  "ui.close": "Schließen",
+  "ui.coil": "Schraube",
+  "ui.coincident": "Koinzident",
+  "ui.collapse": "Einklappen",
+  "ui.collinear": "Kollinear",
+  "ui.combine": "Kombinieren",
+  "ui.coming_later": "bald verfügbar",
+  "ui.concentric": "Konzentrisch",
+  "ui.configurations": "Konfigurationen",
+  "ui.conic_curve": "Kegelschnitt",
+  "ui.constant": "Konstant",
+  "ui.constraints_conflict": "Bedingungen konfliktreich",
+  "ui.construct": "Konstruktion",
+  "ui.construction": "Konstruktionslinie",
+  "ui.copy": "Kopieren",
+  "ui.corners": "Ecken",
+  "ui.corner": "Ecke",
+  "ui.counterbore": "Tiefenbohrung",
+  "ui.countersink": "Senkung",
+  "ui.create": "Erstellen",
+  "ui.create_copy": "Kopie erstellen",
+  "ui.create_sketch": "Skizze erstellen",
+  "ui.current": "aktuell",
+  "ui.curvature": "Krümmung",
+  "ui.curves": "Kurven",
+  "ui.cut": "Ausschneiden",
+  "ui.cylinder": "Zylinder",
+  "ui.dark": "Dunkel",
+  "ui.default_modelling_orientation": "Standard-Modellierungsorientierung",
+  "ui.degrees_of_freedom": "Freiheitsgrade",
+  "ui.delete": "Löschen",
+  "ui.depth": "Tiefe",
+  "ui.design": "Design",
+  "ui.diameter": "Durchmesser",
+  "ui.dimension": "Maß",
+  "ui.direction": "Richtung",
+  "ui.distance": "Abstand",
+  "ui.distance_1": "Abstand 1",
+  "ui.distance_2": "Abstand 2",
+  "ui.document_settings": "Dokumenteneinstellungen",
+  "ui.don_t_save": "Nicht speichern",
+  "ui.draft": "Abziehen",
+  "ui.drawing": "Zeichnung",
+  "ui.drill_point": "Bohrpunkt",
+  "ui.edit": "Bearbeiten",
+  "ui.edit_section_analysis": "Querschnittsanalyse bearbeiten",
+  "ui.ellipse": "Ellipse",
+  "ui.end_radius": "Endradius",
+  "ui.entities": "Elemente",
+  "ui.equal": "Gleich",
+  "ui.expand": "Aufklappen",
+  "ui.export_ellipsis": "Exportieren...",
+  "ui.extend": "Verlängern",
+  "ui.extent_type": "Ausdehnungstyp",
+  "ui.extrude": "Extrudieren",
+  "ui.factor": "Faktor",
+  "ui.feature_history": "Feature-Verlauf",
+  "ui.feature_options": "Funktionsoptionen",
+  "ui.features": "Funktionen",
+  "ui.file": "Datei",
+  "ui.fillet": "Vollrundung",
+  "ui.finish_sketch": "Skizze beenden",
+  "ui.fix_unfix": "Fixieren/Lösen",
+  "ui.flat": "Flach",
+  "ui.flip": "Umkehren",
+  "ui.front": "Vorne",
+  "ui.fully_constrained": "Vollständig bestimmt",
+  "ui.general": "Allgemein",
+  "ui.graphics": "Grafik",
+  "ui.heading_assemble": "ZUSAMMENBAU",
+  "ui.heading_box": "BLOCK",
+  "ui.heading_chamfer": "ABSCHRÄGUNG",
+  "ui.heading_circular_pattern": "RADIALES MUSTER",
+  "ui.heading_coil": "SCHRAUBE",
+  "ui.heading_combine": "KOMBINIEREN",
+  "ui.heading_construct": "KONSTRUKTION",
+  "ui.heading_create": "ERSTELLEN",
+  "ui.heading_create_sketch": "SKIZZE ERSTELLEN",
+  "ui.heading_cylinder": "ZYLINDER",
+  "ui.heading_design": "DESIGN",
+  "ui.heading_draft": "ABZIEHEN",
+  "ui.heading_edit": "BEARBEITEN",
+  "ui.heading_extrude": "EXTRUDIEREN",
+  "ui.heading_fillet": "VOLLRUNDUNG",
+  "ui.heading_finish_sketch": "SKIZZE BEENDEN",
+  "ui.heading_front": "VORNE",
+  "ui.heading_hole": "BOHRUNG",
+  "ui.heading_home": "START",
+  "ui.heading_insert": "EINFÜGEN",
+  "ui.heading_inspect": "PRÜFEN",
+  "ui.heading_loft": "LOFT",
+  "ui.heading_measure": "Messen",
+  "ui.heading_mesh": "MESH",
+  "ui.heading_mirror": "SPIEGELN",
+  "ui.heading_modify": "ÄNDERN",
+  "ui.heading_move": "VERSCHIEBEN",
+  "ui.heading_offset": "ABSTAND",
+  "ui.heading_move_copy": "VERSCHIEBEN/KOPIEREN",
+  "ui.heading_offset_plane": "ABSTANDSEBENE",
+  "ui.heading_ok": "OK",
+  "ui.heading_parameters": "PARAMETER",
+  "ui.heading_pattern_on_path": "PFADMUSTER",
+  "ui.heading_pipe": "ROHR",
+  "ui.heading_plane_at_angle": "EBENE IM WINKEL",
+  "ui.heading_plastic": "PLASTIK",
+  "ui.heading_rectangular_pattern": "RECHTECKMUSTER",
+  "ui.heading_revolve": "DREHEN",
+  "ui.heading_right": "RECHTS",
+  "ui.heading_scale": "SKALIEREN",
+  "ui.heading_section_analysis": "QUERSCHNITTSANALYSE",
+  "ui.heading_select": "AUSWÄHLEN",
+  "ui.heading_sheet_metal": "BLECH",
+  "ui.heading_shell": "HÜLLE",
+  "ui.heading_sketch": "SKIZZE",
+  "ui.heading_sketch_palette": "SKIZZENPALETTE",
+  "ui.heading_sketch_scale": "SKIZZE SKALIEREN",
+  "ui.heading_solid": "KÖRPER",
+  "ui.heading_sphere": "SPHÄRE",
+  "ui.heading_split_body": "KÖRPER TRENNEN",
+  "ui.heading_surface": "FLÄCHE",
+  "ui.heading_sweep": "FÜHREN",
+  "ui.heading_thread": "GEWINDE",
+  "ui.heading_top": "OBEN",
+  "ui.heading_torus": "TORUS",
+  "ui.help": "Hilfe",
+  "ui.hide": "Ausblenden",
+  "ui.hole": "Bohrung",
+  "ui.hole_tap_type": "Gewindetyp",
+  "ui.hole_type": "Bohrungstyp",
+  "ui.home": "Start",
+  "ui.horizontal_vertical": "Horizontal/Vertikal",
+  "ui.insert": "Einfügen",
+  "ui.inspect": "Prüfen",
+  "ui.intersect": "Schnitt",
+  "ui.join": "Verbinden",
+  "ui.joints": "Gelenke",
+  "ui.keyboard_shortcuts": "Tastenkürzel",
+  "ui.language": "Sprache",
+  "ui.length_decimals": "Längen-Dezimalstellen",
+  "ui.light": "Hell",
+  "ui.line": "Linie",
+  "ui.linetype": "Linientyp",
+  "ui.loft": "Loft",
+  "ui.look_at": "Ansehen",
+  "ui.manufacture": "Fertigung",
+  "ui.measure": "Messen",
+  "ui.midpoint": "Mittelpunkt",
+  "ui.mirror": "Spiegeln",
+  "ui.mirror_line": "Spiegelachse",
+  "ui.modify": "Ändern",
+  "ui.move": "Verschieben",
+  "ui.multiple": "Mehrfach",
+  "ui.named_views": "Benannte Ansichten",
+  "ui.navigation": "Navigation",
+  "ui.needs_design": "{command}: Öffnen Sie zuerst ein Design",
+  "ui.new_body": "Neuer Körper",
+  "ui.new_design": "Neues Design",
+  "ui.normal": "Normal",
+  "ui.object_type": "Objekttyp",
+  "ui.objects": "Objekte",
+  "ui.offer_to_stand_up_y_up_files": "Y-hoch-Dateien aufrecht anbieten",
+  "ui.offset": "Abstand",
+  "ui.offset_plane": "Abstandsebene",
+  "ui.one_side": "Einseitig",
+  "ui.open": "Öffnen",
+  "ui.open_ellipsis": "Öffnen...",
+  "ui.open_preferences": "Einstellungen öffnen",
+  "ui.open_recent": "Zuletzt verwendet",
+  "ui.operation": "Operation",
+  "ui.options": "Optionen",
+  "ui.orbit_around": "Umkreisen um",
+  "ui.origin": "Ursprung",
+  "ui.palette_points": "Punkte",
+  "ui.palette_profile": "Profil",
+  "ui.pan_zoom_orbit": "Verschieben, zoomen, umkreisen",
+  "ui.parallel": "Parallel",
+  "ui.parameters": "Parameter",
+  "ui.paste": "Einfügen",
+  "ui.path": "Pfad",
+  "ui.pattern_on_path": "Pfadmuster",
+  "ui.perpendicular": "Senkrecht",
+  "ui.pipe": "Rohr",
+  "ui.placement": "Platzierung",
+  "ui.plane": "Ebene",
+  "ui.plane_at_angle": "Ebene im Winkel",
+  "ui.point": "Punkt",
+  "ui.point_under_the_cursor": "Punkt unter dem Cursor",
+  "ui.points": "Punkte",
+  "ui.polygon": "Polygon",
+  "ui.preferences": "Einstellungen",
+  "ui.profile": "Profil",
+  "ui.profile_plane": "Profilebene",
+  "ui.profiles": "Profile",
+  "ui.project": "Projizieren",
+  "ui.quantity_2": "Anzahl 2",
+  "ui.quantity": "Anzahl",
+  "ui.quit": "Beenden",
+  "ui.radius": "Radius",
+  "ui.radius_type": "Radius-Typ",
+  "ui.rectangle": "Rechteck",
+  "ui.rectangular_pattern": "Rechteckmuster",
+  "ui.redo": "Wiederholen",
+  "ui.render": "Rendern",
+  "ui.reset_the_settings_on_this_page": "Einstellungen auf dieser Seite zurücksetzen",
+  "ui.restore_defaults": "Standardeinstellungen wiederherstellen",
+  "ui.reverse_zoom_direction": "Zoomrichtung umkehren",
+  "ui.revolve": "Drehen",
+  "ui.right": "Rechts",
+  "ui.save": "Speichern",
+  "ui.save_as": "Speichern unter",
+  "ui.save_as_ellipsis": "Speichern unter...",
+  "ui.scale": "Skalieren",
+  "ui.section_analysis": "Querschnittsanalyse",
+  "ui.select": "Auswählen",
+  "ui.selection": "Auswahl",
+  "ui.shell": "Hülle",
+  "ui.show": "Einblenden",
+  "ui.show_constraints": "Bedingungen",
+  "ui.show_dimensions": "Maße",
+  "ui.show_points": "Punkte anzeigen",
+  "ui.show_profile": "Profil anzeigen",
+  "ui.show_projected_geometries": "Projizierte Geometrien",
+  "ui.simple": "Einfach",
+  "ui.simulation": "Simulation",
+  "ui.single": "Einzel",
+  "ui.sketch": "Skizze",
+  "ui.sketch_dimension": "Skizzenmaß",
+  "ui.sketch_grid": "Skizzenraster",
+  "ui.sketch_scale": "Skizzenskalierung",
+  "ui.sketch_status": "Skizzenstatus",
+  "ui.sketches": "Skizzen",
+  "ui.slice": "Scheibe",
+  "ui.slot": "Langloch",
+  "ui.smooth": "Glatt",
+  "ui.snap": "Einrasten",
+  "ui.spacing_2": "Abstand 2",
+  "ui.spacing": "Abstand",
+  "ui.sphere": "Sphäre",
+  "ui.spline": "Spline",
+  "ui.split_body": "Körper trennen",
+  "ui.start": "Start",
+  "ui.start_radius": "Startradius",
+  "ui.sweep": "Führen",
+  "ui.symmetric": "Symmetrisch",
+  "ui.symmetry": "Symmetrie",
+  "ui.system": "System",
+  "ui.tangent": "Tangential",
+  "ui.taper_angle": "Kegelwinkel",
+  "ui.tapped": "Gewindebohrung",
+  "ui.text": "Text",
+  "ui.theme": "Design",
+  "ui.thickness": "Dicke",
+  "ui.thread": "Gewinde",
+  "ui.timeline_bottom": "Timeline unten",
+  "ui.timeline_left_note": "Im linken Layout wird die Rücksetzmarke über dem Teile- und Szenenbrowser eingeblendet.",
+  "ui.timeline_left_sidebar": "Linke Seitenleiste",
+  "ui.tip_angle": "Spitzenwinkel",
+  "ui.to_object": "Bis Objekt",
+  "ui.top": "Oben",
+  "ui.torus": "Torus",
+  "ui.trim": "Kürzen",
+  "ui.two_sides": "Beidseitig",
+  "ui.ui_scale": "UI-Skalierung",
+  "ui.undo": "Rückgängig",
+  "ui.units": "Einheiten",
+  "ui.units_of_new_designs": "Einheiten für neue Designs",
+  "ui.untitled": "Ohne Titel",
+  "ui.variable": "Variabel",
+  "ui.view_centre": "Ansichtszentrum",
+  "ui.visual_style": "Ansichtsstil",
+  "ui.workspace": "Arbeitsbereich",
+  "ui.y_distance": "Y-Abstand",
+  "ui.x_distance": "X-Abstand",
+  "ui.zoom_to_the_cursor": "Zum Cursor zoomen",
+  "ui.animateJoint": "Gelenk animieren",
+  "ui.calibrate": "Kalibrieren",
+  "ui.customizeToolbar": "Symbolleiste anpassen…",
+  "ui.editJointLimits": "Gelenkgrenzen bearbeiten",
+  "ui.exportDxf": "Als DXF exportieren…",
+  "ui.findInTimeline": "In der Zeitleiste suchen",
+  "ui.findInWindow": "Im Fenster suchen",
+  "ui.fit": "Einpassen",
+  "ui.groupSelected": "Auswahl gruppieren",
+  "ui.hideAxes": "Achsen ausblenden",
+  "ui.hideDimension": "Bemaßung ausblenden",
+  "ui.hideOrigin": "Ursprung ausblenden",
+  "ui.hidePlanes": "Ebenen ausblenden",
+  "ui.hideProfile": "Profil ausblenden",
+  "ui.homeView": "Startansicht",
+  "ui.isolate": "Isolieren",
+  "ui.lock": "Sperren",
+  "ui.newSketchGroup": "Neue Skizzengruppe",
+  "ui.normalConstruction": "Normal / Konstruktion",
+  "ui.orbit": "Drehen",
+  "ui.heading_position": "POSITION",
+  "ui.pan": "Verschieben",
+  "ui.pinToShortcuts": "An Verknüpfungen anheften",
+  "ui.pinToToolbar": "An Symbolleiste anheften",
+  "ui.properties": "Eigenschaften",
+  "ui.removeSection": "Schnitt entfernen",
+  "ui.removeFromToolbar": "Aus der Symbolleiste entfernen",
+  "ui.repeat": "Wiederholen",
+  "ui.report_a_bug": "Fehler melden",
+  "ui.restore": "Wiederherstellen",
+  "ui.heading_setup": "EINRICHTEN",
+  "ui.selectOther": "Andere auswählen…",
+  "ui.selectTangentChain": "Tangentialkette auswählen",
+  "ui.showAll": "Alle einblenden",
+  "ui.showAllBodies": "Alle Volumenkörper einblenden",
+  "ui.showAxes": "Achsen einblenden",
+  "ui.showDimension": "Bemaßung einblenden",
+  "ui.showOrigin": "Ursprung einblenden",
+  "ui.showPlanes": "Ebenen einblenden",
+  "ui.suppress": "Unterdrücken",
+  "ui.command_palette_hint": "Befehl eingeben, z. B. {example}  — oder S drücken, um zu suchen",
+  "ui.unground": "Fixierung lösen",
+  "ui.unisolate": "Isolierung aufheben",
+  "ui.unlock": "Entsperren",
+  "ui.unsuppress": "Unterdrückung aufheben",
+  "ui.updateToCurrentView": "Auf aktuelle Ansicht aktualisieren",
+  "ui.zoom": "Zoomen",
+  "ui.command_done": "{command} fertig",
+  "cmd.appearance_assign": "Erscheinungsbild",
+  "cmd.appearance_library": "Erscheinungsbild-Bibliothek",
+  "cmd.appearance_list": "Erscheinungsbilder auflisten",
+  "cmd.body_rename": "Körper umbenennen",
+  "cmd.browser_group": "Neue Gruppe",
+  "cmd.browser_move": "Browser-Elemente verschieben",
+  "cmd.browser_order": "Browser-Elemente ordnen",
+  "cmd.browser_rename_group": "Gruppe umbenennen",
+  "cmd.browser_ungroup": "Gruppierung aufheben",
+  "cmd.browser_visibility": "Ein-/Ausblenden",
+  "cmd.canvas_calibrate": "Zeichenfläche kalibrieren",
+  "cmd.canvas_decal": "Dekal",
+  "cmd.canvas_delete": "Zeichenfläche löschen",
+  "cmd.canvas_edit": "Zeichenfläche bearbeiten",
+  "cmd.canvas_insert": "Zeichenfläche",
+  "cmd.component_activate": "Komponente aktivieren",
+  "cmd.component_break_link": "Verknüpfung trennen",
+  "cmd.component_capture_position": "Position erfassen",
+  "cmd.component_create": "Neue Komponente",
+  "cmd.component_delete": "Komponente löschen",
+  "cmd.component_from_bodies": "Komponenten aus Körpern erstellen",
+  "cmd.component_insert_design": "Konstruktion einfügen",
+  "cmd.component_links": "Verknüpfungen auflisten",
+  "cmd.component_list": "Komponenten auflisten",
+  "cmd.component_move_bodies": "Körper in Komponente verschieben",
+  "cmd.component_move_sketches": "Skizzen in Komponente verschieben",
+  "cmd.component_paste_new": "Neu einfügen",
+  "cmd.component_properties": "Physikalische Eigenschaften der Komponente",
+  "cmd.component_rename": "Komponente umbenennen",
+  "cmd.component_revert_position": "Position zurücksetzen",
+  "cmd.component_update_links": "Verknüpfungen aktualisieren",
+  "cmd.config_activate": "Konfiguration aktivieren",
+  "cmd.config_column": "Konfigurationsspalte",
+  "cmd.config_configure": "Konfigurieren",
+  "cmd.config_preview": "Konfiguration vorschauen",
+  "cmd.config_row": "Konfigurationszeile",
+  "cmd.config_rule": "Konfigurationsregel",
+  "cmd.config_rules": "Konfigurationsregeln",
+  "cmd.config_table": "Konfigurationstabelle anzeigen",
+  "cmd.construct_axis_edge": "Achse durch Kante",
+  "cmd.construct_axis_normal_to_face": "Achse senkrecht zur Fläche",
+  "cmd.construct_axis_through_cylinder": "Achse durch Zylinder/Kegel/Torus",
+  "cmd.construct_axis_two_planes": "Achse durch zwei Ebenen",
+  "cmd.construct_axis_two_points": "Achse durch zwei Punkte",
+  "cmd.construct_plane_along_path": "Ebene entlang Pfad",
+  "cmd.construct_plane_midplane": "Mittenebene",
+  "cmd.construct_plane_perpendicular": "Rechtebene",
+  "cmd.construct_plane_tangent": "Tangentialebene",
+  "cmd.construct_plane_three_points": "Ebene durch drei Punkte",
+  "cmd.construct_plane_two_edges": "Ebene durch zwei Kanten",
+  "cmd.construct_point_along_path": "Punkt entlang Pfad",
+  "cmd.construct_point_center": "Punkt im Mittelpunkt von Kreis/Kugel/Torus",
+  "cmd.construct_point_edge_plane": "Punkt an Kante und Ebene",
+  "cmd.construct_point_three_planes": "Punkt aus drei Ebenen",
+  "cmd.construct_point_two_edges": "Punkt aus zwei Kanten",
+  "cmd.construct_point_vertex": "Punkt an Scheitelpunkt",
+  "cmd.contact_check": "Kontakt prüfen",
+  "cmd.contact_create": "Neuer Kontaktsatz",
+  "cmd.contact_disable_all": "Kontakt deaktivieren",
+  "cmd.contact_edit": "Kontaktsatz bearbeiten",
+  "cmd.contact_enable_all": "Alle Kontakte aktivieren",
+  "cmd.contact_enable_sets": "Kontaktsätze aktivieren",
+  "cmd.contact_list": "Kontaktsätze auflisten",
+  "cmd.diagnostics_crash_report": "Absturzbericht",
+  "cmd.diagnostics_crash_reports": "Absturzberichte",
+  "cmd.diagnostics_crash_reports_clear": "Absturzberichte löschen",
+  "cmd.diagnostics_crash_test": "Absturztest",
+  "cmd.doc_recover": "Konstruktion wiederherstellen",
+  "cmd.doc_recovery_discard": "Wiederhergestellte Konstruktion verwerfen",
+  "cmd.doc_recovery_list": "Wiederherstellbare Konstruktionen",
+  "cmd.document_inspect": "Konstruktion prüfen",
+  "cmd.document_units": "Einheiten der Konstruktion ändern",
+  "cmd.edit_checkpoint": "Prüfpunkt",
+  "cmd.edit_restore_checkpoint": "Prüfpunkt wiederherstellen",
+  "cmd.engine_commands": "Befehle auflisten",
+  "cmd.explode_create": "Explosionsdarstellung",
+  "cmd.explode_delete": "Explosionsdarstellung löschen",
+  "cmd.explode_list": "Explosionsdarstellungen auflisten",
+  "cmd.explode_show": "Explosionsdarstellung anzeigen",
+  "cmd.expr_evaluate": "Ausdruck auswerten",
+  "cmd.face_delete": "Fläche löschen",
+  "cmd.file_export": "Exportieren",
+  "cmd.file_insert_mesh": "Netz einfügen",
+  "cmd.file_insert_step": "STEP einfügen",
+  "cmd.file_save_mesh": "Als Netz speichern",
+  "cmd.inspect_accessibility": "Zugänglichkeitsanalyse",
+  "cmd.inspect_center_of_mass": "Massenschwerpunkt",
+  "cmd.inspect_curvature_comb": "Krümmungskamm-Analyse",
+  "cmd.inspect_curvature_map": "Krümmungskartenanalyse",
+  "cmd.inspect_draft": "Auswinkelanalyse",
+  "cmd.inspect_environment_map": "Umgebungskartenanalyse",
+  "cmd.inspect_interference": "Eingriff",
+  "cmd.inspect_isocurve": "Isokurvenanalyse",
+  "cmd.inspect_minimum_radius": "Mindestradiusanalyse",
+  "cmd.inspect_zebra": "Zebra-Analyse",
+  "cmd.joint_as_built": "Fertigungsgelenk",
+  "cmd.joint_create": "Gelenk",
+  "cmd.joint_delete": "Gelenk löschen",
+  "cmd.joint_drive": "Gelenke antreiben",
+  "cmd.joint_edit": "Gelenk bearbeiten",
+  "cmd.joint_limits": "Gelenkgrenzen",
+  "cmd.joint_list": "Gelenke auflisten",
+  "cmd.joint_motion_link": "Bewegungsverknüpfung",
+  "cmd.joint_origin": "Gelenkursprung",
+  "cmd.joint_rigid_group": "Starrgruppe",
+  "cmd.joint_solve": "Gelenke lösen",
+  "cmd.material_assign": "Physikalisches Material",
+  "cmd.material_create": "Neues physikalisches Material",
+  "cmd.material_delete": "Physisches Material löschen",
+  "cmd.material_edit": "Physisches Material bearbeiten",
+  "cmd.material_list": "Materialien auflisten",
+  "cmd.mesh_convert": "Netz konvertieren",
+  "cmd.model_edges": "Kanten auflisten",
+  "cmd.model_faces": "Flächen auflisten",
+  "cmd.model_threads": "Gewinde auflisten",
+  "cmd.motion_delete": "Bewegungsuntersuchung löschen",
+  "cmd.motion_export": "Bewegungsuntersuchung exportieren",
+  "cmd.motion_list": "Bewegungsuntersuchungen auflisten",
+  "cmd.motion_play": "Bewegungsuntersuchung abspielen",
+  "cmd.motion_study": "Bewegungsuntersuchung",
+  "cmd.occurrence_copy": "Einfügen (Instanz)",
+  "cmd.occurrence_ground": "Festsetzen",
+  "cmd.occurrence_move": "Instanz verschieben",
+  "cmd.occurrence_properties": "Physikalische Eigenschaften der Instanz",
+  "cmd.parameters_add": "Benutzerparameter hinzufügen",
+  "cmd.parameters_change": "Parameter ändern",
+  "cmd.parameters_comment": "Parameter kommentieren",
+  "cmd.parameters_complete": "Ausdruck vervollständigen",
+  "cmd.parameters_delete": "Parameter löschen",
+  "cmd.parameters_export": "Parameter exportieren",
+  "cmd.parameters_favorite": "Favorisierter Parameter",
+  "cmd.parameters_graph": "Parametergraph",
+  "cmd.parameters_import": "Parameter importieren",
+  "cmd.parameters_list": "Parameter auflisten",
+  "cmd.parameters_rename": "Parameter umbenennen",
+  "cmd.parameters_users": "Parameterverwendungen",
+  "cmd.parts_fastener": "Verbindungselement einfügen",
+  "cmd.parts_insert": "Bauteil einfügen",
+  "cmd.parts_library": "Standardbauteile",
+  "cmd.parts_resize": "Bauteilgröße ändern",
+  "cmd.plastic_assign_rule": "Kunststoffregel zuweisen",
+  "cmd.plastic_boss": "Erhöhung",
+  "cmd.plastic_lip": "Lippe",
+  "cmd.plastic_manage_rules": "Kunststoffregeln verwalten",
+  "cmd.plastic_rest": "Auflage",
+  "cmd.plastic_rules": "Kunststoffregeln auflisten",
+  "cmd.plastic_snap_fit": "Rastverbindung",
+  "cmd.select_clear": "Auswahl aufheben",
+  "cmd.sheet_convert": "In Blech umwandeln",
+  "cmd.sheet_export_bend_table": "Biegungstabelle exportieren",
+  "cmd.sheet_export_dxf": "Flachmuster als DXF exportieren",
+  "cmd.sheet_flange": "Flansch",
+  "cmd.sheet_flat_pattern": "Flachmuster erstellen",
+  "cmd.sheet_fold": "Falten",
+  "cmd.sheet_hem": "Umkantung",
+  "cmd.sheet_manage_rules": "Blechregeln",
+  "cmd.sheet_refold": "Wieder falten",
+  "cmd.sheet_rules": "Blechregeln auflisten",
+  "cmd.sheet_unfold": "Entfalten",
+  "cmd.sketch_arc_center_point": "Mittelpunkt-Kreisbogen",
+  "cmd.sketch_arc_tangent": "Tangentialbogen",
+  "cmd.sketch_arc_three_point": "3-Punkt-Kreisbogen",
+  "cmd.sketch_auto_constrain": "Auto-Bedingung",
+  "cmd.sketch_auto_constrain_from_datum": "Auto-Bedingung von Bezug",
+  "cmd.sketch_auto_project": "Kanten automatisch auf Referenz projizieren",
+  "cmd.sketch_blend_curve": "Übergangskurve",
+  "cmd.sketch_chain": "Kette",
+  "cmd.sketch_chamfer_distance_angle": "Abschrägung mit Abstand und Winkel",
+  "cmd.sketch_chamfer_equal_distance": "Abschrägung mit gleichem Abstand",
+  "cmd.sketch_chamfer_two_distance": "Abschrägung mit zwei Abständen",
+  "cmd.sketch_circle_center": "Kreis aus Mittelpunkt und Durchmesser",
+  "cmd.sketch_circle_three_point": "3-Punkt-Kreis",
+  "cmd.sketch_circle_three_tangent": "3-Tangenten-Kreis",
+  "cmd.sketch_circle_two_point": "2-Punkt-Kreis",
+  "cmd.sketch_circle_two_tangent": "2-Tangenten-Kreis",
+  "cmd.sketch_constrainer": "Skizzen-Bedingung",
+  "cmd.sketch_constraint_fix": "Fixieren/Lösen",
+  "cmd.sketch_constraint_midpoint": "Mittelpunkt",
+  "cmd.sketch_construction": "Normal/Konstruktion",
+  "cmd.sketch_delete": "Skizzenentitäten löschen",
+  "cmd.sketch_dimension_text": "Maßtext verschieben",
+  "cmd.sketch_drag": "Skizzengeometrie ziehen",
+  "cmd.sketch_drag_end": "Skizzen-Ziehen beenden",
+  "cmd.sketch_draw_dimensioned": "Skizzengeometrie mit Maßen zeichnen",
+  "cmd.sketch_edit": "Skizze bearbeiten",
+  "cmd.sketch_edit_text": "Text bearbeiten",
+  "cmd.sketch_export_dxf": "Als DXF speichern",
+  "cmd.sketch_finish_auto_constrain": "Mit Auto-Bedingung fertigstellen",
+  "cmd.sketch_fit_curves_to_section": "Kurven an Netzquerschnitt anpassen",
+  "cmd.sketch_glyphs": "Bedingungssymbole",
+  "cmd.sketch_include_3d": "3D-Geometrie einbeziehen",
+  "cmd.sketch_insert_dxf": "DXF einfügen",
+  "cmd.sketch_insert_svg": "SVG einfügen",
+  "cmd.sketch_inspect": "Skizze prüfen",
+  "cmd.sketch_intersection_curve": "Schnittkurve",
+  "cmd.sketch_isoparametric_curve": "Isoparametrische Kurve",
+  "cmd.sketch_line3d": "3D-Linie",
+  "cmd.sketch_line_midpoint": "Linie über den Mittelpunkt",
+  "cmd.sketch_move": "Skizzenentitäten verschieben/kopieren",
+  "cmd.sketch_move3d": "3D-Punkt verschieben",
+  "cmd.sketch_move_point": "Skizzenpunkt ziehen",
+  "cmd.sketch_offset_break": "Versatzverknüpfung trennen",
+  "cmd.sketch_options": "Skizzenpalettenoptionen",
+  "cmd.sketch_point3d": "3D-Punkt",
+  "cmd.sketch_polygon_circumscribed": "Umgeschriebenes Polygon",
+  "cmd.sketch_polygon_edge": "Polygon über eine Kante",
+  "cmd.sketch_polygon_inscribed": "Eingeschriebenes Polygon",
+  "cmd.sketch_project_to_surface": "Auf Fläche projizieren",
+  "cmd.sketch_rectangle_center": "Rechteck vom Mittelpunkt",
+  "cmd.sketch_rectangle_three_point": "3-Punkt-Rechteck",
+  "cmd.sketch_rectangle_two_point": "2-Punkt-Rechteck",
+  "cmd.sketch_redefine": "Skizzierebene neu definieren",
+  "cmd.sketch_slot_arc_center": "Mittelpunkt-Bogenschlitz",
+  "cmd.sketch_slot_arc_three_point": "3-Punkt-Bogenschlitz",
+  "cmd.sketch_slot_center_point": "Mittelpunktschlitz",
+  "cmd.sketch_slot_center_to_center": "Schlitz von Mittelpunkt zu Mittelpunkt",
+  "cmd.sketch_slot_overall": "Gesamtschlitz",
+  "cmd.sketch_snap": "Einrastinferenz",
+  "cmd.sketch_solve": "Skizze lösen",
+  "cmd.sketch_spline3d": "3D-Spline",
+  "cmd.sketch_spline_control_point": "Spline mit Kontrollpunkten",
+  "cmd.sketch_spline_control_point_5": "Spline mit Kontrollpunkten (Grad 5)",
+  "cmd.sketch_spline_fit_point": "Spline mit Fitpunkten",
+  "cmd.sketch_spun_profile": "Gedrehtes Profil",
+  "cmd.sketch_toggle_driven": "Abhängiges Maß umschalten",
+  "cmd.solid_align": "Ausrichten",
+  "cmd.solid_boundary_fill": "Begrenzungsfüllung",
+  "cmd.solid_bounding_solid": "Begrenzender Körper",
+  "cmd.solid_emboss": "Prägen",
+  "cmd.solid_move": "Verschieben/Kopieren",
+  "cmd.solid_offset_face": "Fläche versetzen",
+  "cmd.solid_press_pull": "Drücken/Ziehen",
+  "cmd.solid_remove": "Entfernen",
+  "cmd.solid_replace_face": "Fläche ersetzen",
+  "cmd.solid_rib": "Rippe",
+  "cmd.solid_split_face": "Fläche teilen",
+  "cmd.solid_web": "Gewebe",
+  "cmd.surface_patch": "Patch",
+  "cmd.surface_stitch": "Nähen",
+  "cmd.surface_thicken": "Dicke vergeben",
+  "cmd.surface_extrude": "Flächen-Extrusion",
+  "cmd.surface_revolve": "Flächen-Rotation",
+  "cmd.surface_sweep": "Flächen-Sweep",
+  "cmd.surface_loft": "Flächen-Loft",
+  "cmd.surface_ruled": "Regelfläche",
+  "cmd.surface_boundary": "Begrenzungsfläche",
+  "cmd.surface_offset": "Offsetfläche",
+  "cmd.surface_blend": "Verbindungsfläche",
+  "cmd.surface_fillet": "Flächenverrundung",
+  "cmd.surface_untrim": "Trimmen aufheben",
+  "cmd.surface_unstitch": "Verbund aufheben",
+  "cmd.surface_reverse_normal": "Normale umkehren",
+  "cmd.inspect_continuity": "Kontinuitätsprüfung",
+  "cmd.timeline_compute_all": "Alles berechnen",
+  "cmd.timeline_copy": "Merkmale kopieren",
+  "cmd.timeline_dependents": "Merkmalsabhängigkeiten",
+  "cmd.timeline_inspect": "Merkmal prüfen",
+  "cmd.timeline_paste": "Merkmale einfügen",
+  "cmd.timeline_redefine": "Merkmal bearbeiten",
+  "cmd.timeline_rename": "Umbenennen",
+  "cmd.timeline_reorder": "Merkmal neu ordnen",
+  "cmd.timeline_roll_to": "Verlaufsmarkierung verschieben",
+  "cmd.timeline_rollback": "Zeitleistenmarkierung verschieben",
+  "cmd.timeline_suppress": "Merkmal unterdrücken",
+  "cmd.view_apply": "Benannte Ansicht wiederherstellen",
+  "cmd.view_delete": "Benannte Ansicht löschen",
+  "cmd.view_list": "Benannte Ansichten auflisten",
+  "cmd.view_rename": "Benannte Ansicht umbenennen",
+  "cmd.view_save": "Neue benannte Ansicht",
+  "ui.export_ellipsis_keymap": "Exportieren…",
+  "ui.heading_configure": "KONFIGURIEREN",
+  "ui.heading_constraints": "RANDBEDINGUNGEN",
+  "ui.heading_utilities": "WERKZEUGE",
+  "BROWSER": "BROWSER",
+  "Drive Joint": "Gelenk antreiben",
+  "Edit Profile Sketch": "Profile-Skizze bearbeiten",
+  "Find in Browser": "Im Browser suchen",
+  "Report a bug — review a screenshot and open a GitHub draft": "Fehler melden — Screenshot prüfen und einen GitHub-Entwurf öffnen",
+  "Reset Toolbar": "Symbolleiste zurücksetzen",
+  "Select bodies (a face picks its body)": "Körper auswählen (eine Fläche wählt ihren Körper)",
+  "Selection filter": "Auswahlfilter",
+  "Revert Position": "Position zurücksetzen",
+  "Construction": "Konstruktionslinie",
+  "Faces": "Flächen",
+  "Edges": "Kanten",
+  "Vertices": "Scheitelpunkte",
+  "Sketch geometry and profiles": "Skizzengeometrie und Profile",
+  "Sketch curves": "Skizzenkurven",
+  "Sketch points": "Skizzenpunkte",
+  "Sketch dimensions": "Skizzenmaße",
+  "Sketch constraints": "Skizzenbedingungen",
+  "Flat": "Flach",
+  "cmd.render_backends": "Render-Backends",
+  "cmd.view_navigate": "Ansicht navigieren",
+  "timeline.group": "Neuen Merkmalsordner anlegen",
+  "timeline.ungroup": "Merkmalsordner entfernen",
+  "timeline.rename_group": "Merkmalsordner umbenennen",
+  "timeline.move_to_group": "Merkmale in Ordner verschieben",
+  "timeline.move_many": "Zeitleistenelemente verschieben",
+  "timeline.reorder_many": "Merkmale neu ordnen",
+  "ui.show_construction_geometries": "Konstruktionsgeometrien",
+  "ui.total_angle": "Gesamtwinkel",
+  "sketch_text.builtin_font": "{family} (integriert)",
+  "sketch_text.font_search": "Schriftarten suchen",
+  "sketch_text.loading_fonts": "Installierte Schriftarten werden gesucht…",
+  "sketch_text.use_font_file": "Schriftdatei {path} verwenden",
+  "sketch_text.bold": "Fett",
+  "sketch_text.italic": "Kursiv",
+  "sketch_text.align_left": "Links",
+  "sketch_text.align_center": "Mitte",
+  "sketch_text.align_right": "Rechts",
+  "sketch_text.path_hint": "Eine Skizzenkurve, der der Text folgt: hier klicken, dann die Kurve",
+  "sketch_text.path_clear": "Text von der Kurve lösen",
+  "sketch_text.on_path": "Der Text folgt seiner Kurve: sie bestimmt seine Lage"
+}
@@ -214,6 +214,7 @@
  "cmd.sketch_polygon_inscribed": "Inscribed Polygon",
  "cmd.sketch_project_to_surface": "Project To Surface",
  "cmd.sketch_rectangle_center": "Center Rectangle",
+  "cmd.sketch_rectangle_rounded": "Rounded Rectangle",
  "cmd.sketch_rectangle_three_point": "3-Point Rectangle",
  "cmd.sketch_rectangle_two_point": "2-Point Rectangle",
  "cmd.sketch_redefine": "Redefine Sketch Plane",
@@ -245,6 +246,19 @@
  "cmd.surface_patch": "Patch",
  "cmd.surface_stitch": "Stitch",
  "cmd.surface_thicken": "Thicken",
+  "cmd.surface_extrude": "Surface Extrude",
+  "cmd.surface_revolve": "Surface Revolve",
+  "cmd.surface_sweep": "Surface Sweep",
+  "cmd.surface_loft": "Surface Loft",
+  "cmd.surface_ruled": "Ruled Surface",
+  "cmd.surface_boundary": "Boundary Surface",
+  "cmd.surface_offset": "Offset Surface",
+  "cmd.surface_blend": "Blend Surface",
+  "cmd.surface_fillet": "Surface Fillet",
+  "cmd.surface_untrim": "Untrim",
+  "cmd.surface_unstitch": "Unstitch",
+  "cmd.surface_reverse_normal": "Reverse Normal",
+  "cmd.inspect_continuity": "Continuity Analysis",
  "cmd.timeline_compute_all": "Compute All",
  "cmd.timeline_copy": "Copy Features",
  "cmd.timeline_dependents": "Feature Dependents",
@@ -265,6 +279,9 @@
  "dialog.edit_title": "EDIT {title}",
  "dialog.select": "↖ Select",
  "dialog.selected_count": "↖ {count} selected",
+  "dialog.step": "Step",
+  "dialog.selection_step": "{step} of {total}: Select {input}",
+  "dialog.selection_guidance": "Select an input to change it. Click selected objects to remove them; Ctrl/Cmd-click also toggles them. Review the preview, then press OK.",
  "document.save_changes": "Save changes to {name}?",
  "document.unsaved_changes": "{name} has unsaved changes. If you don't save, they are lost.",
  "settings.msaa_applies_on_restart": "Anti-aliasing applies the next time SolidCraft starts",
@@ -285,6 +302,7 @@
  "ui.agent_cursor": "Agent cursor",
  "ui.agent_cursor_speed": "Agent cursor speed",
  "ui.all": "All",
+  "ui.analysis": "Analysis",
  "ui.angle": "Angle",
  "ui.angle_decimals": "Angle decimals",
  "ui.animate_view_changes": "Animate view changes",
@@ -310,6 +328,8 @@
  "ui.chamfer_type": "Chamfer Type",
  "ui.change_workspace": "Change workspace",
  "ui.chord_length": "Chord Length",
+  "ui.curvature_g2": "Curvature (G2)",
+  "ui.equivalent_radius": "Equivalent Radius",
  "ui.circle": "Circle",
  "ui.circular_pattern": "Circular Pattern",
  "ui.clear": "Clear",
@@ -325,6 +345,7 @@
  "ui.combine": "Combine",
  "ui.coming_later": "coming later",
  "ui.concentric": "Concentric",
+  "ui.configurations": "Configurations",
  "ui.conic_curve": "Conic Curve",
  "ui.constant": "Constant",
  "ui.constraints_conflict": "Constraints conflict",
@@ -362,6 +383,7 @@
  "ui.drawing": "Drawing",
  "ui.drill_point": "Drill Point",
  "ui.edit": "Edit",
+  "ui.edit_section_analysis": "Edit Section Analysis",
  "ui.ellipse": "Ellipse",
  "ui.end_radius": "End Radius",
  "ui.entities": "Entities",
@@ -374,6 +396,7 @@
  "ui.extent_type": "Extent Type",
  "ui.extrude": "Extrude",
  "ui.factor": "Factor",
+  "ui.feature_history": "Feature history",
  "ui.feature_options": "Feature Options",
  "ui.features": "Features",
  "ui.file": "File",
@@ -554,7 +577,6 @@
  "ui.shell": "Shell",
  "ui.show": "Show",
  "ui.show_constraints": "Constraints",
-  "ui.show_construction_geometries": "Construction Geometries",
  "ui.show_dimensions": "Dimensions",
  "ui.show_points": "Show Points",
  "ui.show_profile": "Show Profile",
@@ -595,6 +617,9 @@
  "ui.theme": "Theme",
  "ui.thickness": "Thickness",
  "ui.thread": "Thread",
+  "ui.timeline_bottom": "Bottom timeline",
+  "ui.timeline_left_note": "The left layout shows the rollback bar above the parts and scene browser.",
+  "ui.timeline_left_sidebar": "Left sidebar",
  "ui.tip_angle": "Tip Angle",
  "ui.to_object": "To Object",
  "ui.top": "Top",
@@ -858,5 +883,79 @@
  "Double-clicking the middle button in the view: Home (the home view, framing what is shown), Fit (frame what is shown, keeping the orientation) or nothing": "Double-clicking the middle button in the view: Home (the home view, framing what is shown), Fit (frame what is shown, keeping the orientation) or nothing",
  "Select Other: hold the left button still on the model (or right-click › Select Other…) to list everything under the cursor; click again on the same spot to select the next thing there. Double-click the middle button to go Home (Preferences › Navigation).": "Select Other: hold the left button still on the model (or right-click › Select Other…) to list everything under the cursor; click again on the same spot to select the next thing there. Double-click the middle button to go Home (Preferences › Navigation).",
  "cmd.render_backends": "Render Backends",
-  "cmd.view_navigate": "Navigate View"
-}
+  "cmd.view_navigate": "Navigate View",
+  "ui.animateJoint": "Animate Joint",
+  "ui.calibrate": "Calibrate",
+  "ui.customizeToolbar": "Customize Toolbar…",
+  "ui.editJointLimits": "Edit Joint Limits",
+  "ui.exportDxf": "Export DXF…",
+  "ui.findInTimeline": "Find in Timeline",
+  "ui.findInWindow": "Find in Window",
+  "ui.fit": "Fit",
+  "ui.groupSelected": "Group Selected",
+  "ui.hideAxes": "Hide Axes",
+  "ui.hideDimension": "Hide Dimension",
+  "ui.hideOrigin": "Hide Origin",
+  "ui.hidePlanes": "Hide Planes",
+  "ui.hideProfile": "Hide Profile",
+  "ui.homeView": "Home View",
+  "ui.isolate": "Isolate",
+  "ui.lock": "Lock",
+  "ui.newSketchGroup": "New Sketch Group",
+  "ui.normalConstruction": "Normal / Construction",
+  "ui.orbit": "Orbit",
+  "ui.heading_position": "POSITION",
+  "ui.pan": "Pan",
+  "ui.pinToShortcuts": "Pin to Shortcuts",
+  "ui.pinToToolbar": "Pin to Toolbar",
+  "ui.properties": "Properties",
+  "ui.removeSection": "Remove Section",
+  "ui.removeFromToolbar": "Remove from Toolbar",
+  "ui.repeat": "Repeat",
+  "ui.report_a_bug": "Report a bug",
+  "ui.restore": "Restore",
+  "ui.heading_setup": "SETUP",
+  "ui.selectOther": "Select Other…",
+  "ui.selectTangentChain": "Select Tangent Chain",
+  "ui.showAll": "Show All",
+  "ui.showAllBodies": "Show All Bodies",
+  "ui.showAxes": "Show Axes",
+  "ui.showDimension": "Show Dimension",
+  "ui.showOrigin": "Show Origin",
+  "ui.showPlanes": "Show Planes",
+  "ui.suppress": "Suppress",
+  "ui.command_palette_hint": "Type a command, e.g. {example}  — or press S to search",
+  "ui.unground": "Unground",
+  "ui.unisolate": "Unisolate",
+  "ui.unlock": "Unlock",
+  "ui.unsuppress": "Unsuppress",
+  "ui.updateToCurrentView": "Update to Current View",
+  "ui.zoom": "Zoom",
+  "ui.command_done": "{command} done",
+  "timeline.group": "New Feature Folder",
+  "timeline.ungroup": "Remove Feature Folders",
+  "timeline.rename_group": "Rename Feature Folder",
+  "timeline.move_to_group": "Move Features to Folder",
+  "timeline.move_many": "Move Timeline Items",
+  "timeline.reorder_many": "Reorder Features",
+  "ui.show_construction_geometries": "Construction Geometries",
+  "ui.total_angle": "Total angle",
+  "sketch_text.builtin_font": "{family} (built-in)",
+  "sketch_text.font_search": "Search fonts",
+  "sketch_text.loading_fonts": "Looking for installed fonts…",
+  "sketch_text.use_font_file": "Use the font file {path}",
+  "sketch_text.bold": "Bold",
+  "sketch_text.italic": "Italic",
+  "sketch_text.align_left": "Left",
+  "sketch_text.align_center": "Center",
+  "sketch_text.align_right": "Right",
+  "sketch_text.path_hint": "A curve of the sketch the text follows: click here, then the curve",
+  "sketch_text.path_clear": "Take the text off its curve",
+  "Style": "Style",
+  "Alignment": "Alignment",
+  "Letter Spacing": "Letter Spacing",
+  "Line Spacing": "Line Spacing",
+  "Path": "Path",
+  "sketch_text.on_path": "The text follows its path: the curve places it",
+  "cmd.material_properties_validate":"Validate Physical Material Data"
+}
@@ -214,6 +214,7 @@
  "cmd.sketch_polygon_inscribed": "内接ポリゴン",
  "cmd.sketch_project_to_surface": "サーフェスに投影",
  "cmd.sketch_rectangle_center": "中心指定の長方形",
+  "cmd.sketch_rectangle_rounded": "角丸長方形",
  "cmd.sketch_rectangle_three_point": "3点指定長方形",
  "cmd.sketch_rectangle_two_point": "2点指定長方形",
  "cmd.sketch_redefine": "スケッチ平面を再定義",
@@ -245,6 +246,19 @@
  "cmd.surface_patch": "パッチ",
  "cmd.surface_stitch": "ステッチ",
  "cmd.surface_thicken": "厚み付け",
+  "cmd.surface_extrude": "サーフェス押し出し",
+  "cmd.surface_revolve": "サーフェス回転",
+  "cmd.surface_sweep": "サーフェススイープ",
+  "cmd.surface_loft": "サーフェスロフト",
+  "cmd.surface_ruled": "ルールドサーフェス",
+  "cmd.surface_boundary": "境界サーフェス",
+  "cmd.surface_offset": "オフセットサーフェス",
+  "cmd.surface_blend": "ブレンドサーフェス",
+  "cmd.surface_fillet": "サーフェスフィレット",
+  "cmd.surface_untrim": "トリム解除",
+  "cmd.surface_unstitch": "縫い合わせ解除",
+  "cmd.surface_reverse_normal": "法線を反転",
+  "cmd.inspect_continuity": "連続性解析",
  "cmd.timeline_compute_all": "すべて再計算",
  "cmd.timeline_copy": "フィーチャーをコピー",
  "cmd.timeline_dependents": "従属フィーチャー",
@@ -265,6 +279,9 @@
  "dialog.edit_title": "{title}を編集",
  "dialog.select": "↖ 選択",
  "dialog.selected_count": "↖ {count} 個選択中",
+  "dialog.step": "ステップ",
+  "dialog.selection_step": "{total} ステップ中 {step}: {input} を選択",
+  "dialog.selection_guidance": "入力欄を選んで変更します。選択済みのオブジェクトをクリックすると解除できます。Ctrl/Cmd を押しながらクリックしても切り替えられます。プレビューを確認してから OK を押してください。",
  "document.save_changes": "{name} への変更を保存しますか？",
  "document.unsaved_changes": "{name} には保存されていない変更があります。保存しない場合、変更内容は失われます。",
  "settings.msaa_applies_on_restart": "アンチエイリアスは次回 SolidCraft を起動したときに適用されます",
@@ -285,6 +302,7 @@
  "ui.agent_cursor": "エージェントカーソル",
  "ui.agent_cursor_speed": "エージェントカーソル速度",
  "ui.all": "すべて",
+  "ui.analysis": "解析",
  "ui.angle": "角度",
  "ui.angle_decimals": "角度の小数点以下の桁数",
  "ui.animate_view_changes": "視点変更をアニメーション表示",
@@ -310,6 +328,8 @@
  "ui.chamfer_type": "面取りタイプ",
  "ui.change_workspace": "ワークスペースの変更",
  "ui.chord_length": "弦長",
+  "ui.curvature_g2": "曲率連続 (G2)",
+  "ui.equivalent_radius": "等価半径",
  "ui.circle": "円",
  "ui.circular_pattern": "円形パターン",
  "ui.clear": "クリア",
@@ -325,6 +345,7 @@
  "ui.combine": "結合",
  "ui.coming_later": "準備中",
  "ui.concentric": "同心",
+  "ui.configurations": "構成",
  "ui.conic_curve": "円錐曲線",
  "ui.constant": "一定",
  "ui.constraints_conflict": "拘束が競合しています",
@@ -362,6 +383,7 @@
  "ui.drawing": "図面",
  "ui.drill_point": "ドリル先端",
  "ui.edit": "編集",
+  "ui.edit_section_analysis": "断面解析を編集",
  "ui.ellipse": "楕円",
  "ui.end_radius": "終了半径",
  "ui.entities": "エンティティ",
@@ -374,6 +396,7 @@
  "ui.extent_type": "範囲タイプ",
  "ui.extrude": "押し出し",
  "ui.factor": "倍率",
+  "ui.feature_history": "フィーチャー履歴",
  "ui.feature_options": "フィーチャーオプション",
  "ui.features": "フィーチャー",
  "ui.file": "ファイル",
@@ -554,7 +577,6 @@
  "ui.shell": "シェル",
  "ui.show": "表示",
  "ui.show_constraints": "拘束",
-  "ui.show_construction_geometries": "構築ジオメトリ",
  "ui.show_dimensions": "寸法",
  "ui.show_points": "点を表示",
  "ui.show_profile": "プロファイルを表示",
@@ -595,6 +617,9 @@
  "ui.theme": "テーマ",
  "ui.thickness": "厚さ",
  "ui.thread": "ねじ",
+  "ui.timeline_bottom": "下部タイムライン",
+  "ui.timeline_left_note": "左レイアウトでは、ロールバックバーがパーツとシーンブラウザーの上に表示されます。",
+  "ui.timeline_left_sidebar": "左サイドバー",
  "ui.tip_angle": "先端角度",
  "ui.to_object": "オブジェクトまで",
  "ui.top": "上面",
@@ -858,5 +883,79 @@
  "Double-clicking the middle button in the view: Home (the home view, framing what is shown), Fit (frame what is shown, keeping the orientation) or nothing": "ビュー上で中ボタンをダブルクリックした時の動作: ホーム（全体を収めたホームビュー）、全体表示（向きを維持して全体を収める）、または無効",
  "Select Other: hold the left button still on the model (or right-click › Select Other…) to list everything under the cursor; click again on the same spot to select the next thing there. Double-click the middle button to go Home (Preferences › Navigation).": "その他を選択: モデル上で左ボタンを長押し（または右クリック › その他を選択…）するとカーソル下の要素が一覧表示されます。同じ場所を再度クリックすると次の要素が選択されます。中ボタンをダブルクリックするとホームビューに戻ります（環境設定 › ナビゲーション）。",
  "cmd.render_backends": "レンダリング バックエンド",
-  "cmd.view_navigate": "ビューナビゲーション"
-}
+  "cmd.view_navigate": "ビューナビゲーション",
+  "ui.animateJoint": "ジョイントをアニメート",
+  "ui.calibrate": "校正",
+  "ui.customizeToolbar": "ツールバーをカスタマイズ…",
+  "ui.editJointLimits": "ジョイント制限を編集",
+  "ui.exportDxf": "DXF をエクスポート…",
+  "ui.findInTimeline": "タイムラインで検索",
+  "ui.findInWindow": "ウィンドウで検索",
+  "ui.fit": "フィット",
+  "ui.groupSelected": "選択をグループ化",
+  "ui.hideAxes": "軸を非表示",
+  "ui.hideDimension": "寸法を非表示",
+  "ui.hideOrigin": "原点を非表示",
+  "ui.hidePlanes": "平面を非表示",
+  "ui.hideProfile": "プロファイルを非表示",
+  "ui.homeView": "ホームビュー",
+  "ui.isolate": "分離表示",
+  "ui.lock": "ロック",
+  "ui.newSketchGroup": "新しいスケッチグループ",
+  "ui.normalConstruction": "通常 / コンストラクション",
+  "ui.orbit": "回転",
+  "ui.heading_position": "配置",
+  "ui.pan": "パン",
+  "ui.pinToShortcuts": "ショートカットに固定",
+  "ui.pinToToolbar": "ツールバーに固定",
+  "ui.properties": "プロパティ",
+  "ui.removeSection": "セクションを解除",
+  "ui.removeFromToolbar": "ツールバーから削除",
+  "ui.repeat": "繰り返し",
+  "ui.report_a_bug": "不具合を報告",
+  "ui.restore": "復元",
+  "ui.heading_setup": "セットアップ",
+  "ui.selectOther": "その他を選択…",
+  "ui.selectTangentChain": "接線チェーンを選択",
+  "ui.showAll": "すべて表示",
+  "ui.showAllBodies": "すべてのボディを表示",
+  "ui.showAxes": "軸を表示",
+  "ui.showDimension": "寸法を表示",
+  "ui.showOrigin": "原点を表示",
+  "ui.showPlanes": "平面を表示",
+  "ui.suppress": "抑制",
+  "ui.command_palette_hint": "コマンドを入力（例: {example}）— または S キーで検索",
+  "ui.unground": "固定を解除",
+  "ui.unisolate": "分離表示を解除",
+  "ui.unlock": "ロック解除",
+  "ui.unsuppress": "抑制を解除",
+  "ui.updateToCurrentView": "現在のビューに更新",
+  "ui.zoom": "ズーム",
+  "ui.command_done": "{command} 完了",
+  "timeline.group": "フィーチャーフォルダを新規作成",
+  "timeline.ungroup": "フィーチャーフォルダを削除",
+  "timeline.rename_group": "フィーチャーフォルダの名前を変更",
+  "timeline.move_to_group": "フィーチャーをフォルダへ移動",
+  "timeline.move_many": "タイムライン項目を移動",
+  "timeline.reorder_many": "フィーチャーの順序を変更",
+  "ui.show_construction_geometries": "構築ジオメトリ",
+  "ui.total_angle": "合計角度",
+  "sketch_text.builtin_font": "{family}（内蔵）",
+  "sketch_text.font_search": "フォントを検索",
+  "sketch_text.loading_fonts": "インストール済みフォントを検索中…",
+  "sketch_text.use_font_file": "フォント ファイル {path} を使用",
+  "sketch_text.bold": "太字",
+  "sketch_text.italic": "斜体",
+  "sketch_text.align_left": "左",
+  "sketch_text.align_center": "中央",
+  "sketch_text.align_right": "右",
+  "sketch_text.path_hint": "文字が沿うスケッチの曲線: ここをクリックしてから曲線をクリック",
+  "sketch_text.path_clear": "文字を曲線から外す",
+  "Style": "スタイル",
+  "Alignment": "配置",
+  "Letter Spacing": "文字間隔",
+  "Line Spacing": "行間",
+  "Path": "パス",
+  "sketch_text.on_path": "文字はパスに沿います: 位置は曲線で決まります",
+  "cmd.material_properties_validate":"物理材料データを検証"
+}
@@ -0,0 +1,701 @@
+{
+  "browser.body_name": "바디{number}",
+  "browser.component_name": "컴포넌트{number}",
+  "browser.parameters": "매개변수 ({count})",
+  "browser.precision": "정밀도: {precision}",
+  "browser.sketch_name": "스케치{number}",
+  "browser.units": "단위: {units}",
+  "dialog.custom_axis": "↖ 사용자 정의 축",
+  "dialog.edit_title": "{title} 편집",
+  "dialog.select": "↖ 선택",
+  "dialog.selected_count": "↖ {count}개 선택됨",
+  "dialog.step": "단계",
+  "dialog.selection_step": "{step}/{total} 단계: {input} 선택",
+  "dialog.selection_guidance": "변경할 입력을 선택하세요. 선택한 객체를 클릭하면 선택이 해제되며, Ctrl/Cmd를 누른 채 클릭해도 전환됩니다. 미리 보기를 확인한 다음 확인을 누르세요.",
+  "document.save_changes": "{name}의 변경 사항을 저장하시겠습니까?",
+  "document.unsaved_changes": "{name}에 저장되지 않은 변경 사항이 있습니다. 저장하지 않으면 변경 사항이 사라집니다.",
+  "settings.msaa_applies_on_restart": "안티앨리어싱은 다음에 SolidCraft를 시작할 때 적용됩니다",
+  "settings.msaa_reset": "{setting}: {requested}×는 이 그래픽 장치에서 지원되지 않아 {reset}×로 변경했습니다(지원: {supported}).",
+  "settings.msaa_unsupported": "이 그래픽 장치에서 지원되지 않음",
+  "settings.reset_intro": "다음 설정은 이 컴퓨터에서 작동하지 않아 SolidCraft를 시작할 수 없게 하므로 변경되었습니다:",
+  "settings.reset_title": "설정이 변경되었습니다",
+  "sketch.degrees_of_freedom": "자유도 {count}개",
+  "sketch.draw_curves": "{linetype}(으)로 그리기",
+  "sketch.make_selection": "선택 항목을 {linetype}(으)로 변경",
+  "ui.1_degree_of_freedom": "자유도 1개",
+  "ui.3d_sketch": "3D 스케치",
+  "ui.about": "정보",
+  "ui.activate": "활성화",
+  "ui.active_component": "활성 컴포넌트",
+  "ui.agent_cursor": "에이전트 커서",
+  "ui.agent_cursor_speed": "에이전트 커서 속도",
+  "ui.all": "모두",
+  "ui.analysis": "분석",
+  "ui.angle": "각도",
+  "ui.angle_decimals": "각도 소수점 자릿수",
+  "ui.animate_view_changes": "뷰 변경 애니메이션",
+  "ui.animation": "애니메이션",
+  "ui.animation_speed": "애니메이션 속도",
+  "ui.anti_aliasing": "안티앨리어싱",
+  "ui.apply": "적용",
+  "ui.arc": "호",
+  "ui.assemble": "조립",
+  "ui.autosave_every": "자동 저장 간격",
+  "ui.axes": "축",
+  "ui.axis": "축",
+  "ui.base_point": "기준점",
+  "ui.bodies": "바디",
+  "ui.box": "박스",
+  "ui.break": "끊기",
+  "ui.cancel": "취소",
+  "ui.canvases": "캔버스",
+  "ui.center": "중심",
+  "ui.centerline": "중심선",
+  "ui.chain": "체인",
+  "ui.chamfer": "모따기",
+  "ui.chamfer_type": "모따기 유형",
+  "ui.change_workspace": "작업 공간 변경",
+  "ui.chord_length": "현 길이",
+  "ui.curvature_g2": "곡률 연속 (G2)",
+  "ui.equivalent_radius": "등가 반지름",
+  "ui.circle": "원",
+  "ui.circular_pattern": "원형 패턴",
+  "ui.clear_recent": "최근 항목 지우기",
+  "ui.clear_the_selection": "선택 해제",
+  "ui.close": "닫기",
+  "ui.coil": "코일",
+  "ui.coincident": "일치",
+  "ui.collapse": "접기",
+  "ui.collinear": "동일 선상",
+  "ui.combine": "결합",
+  "ui.coming_later": "추후 지원 예정",
+  "ui.concentric": "동심",
+  "ui.configurations": "구성",
+  "ui.conic_curve": "원뿔 곡선",
+  "ui.constant": "상수",
+  "ui.constraints_conflict": "구속 조건 충돌",
+  "ui.construct": "구성",
+  "ui.construction": "구성선",
+  "ui.copy": "복사",
+  "ui.corners": "코너",
+  "ui.corner": "코너",
+  "ui.counterbore": "카운터보어",
+  "ui.countersink": "카운터싱크",
+  "ui.create": "만들기",
+  "ui.create_copy": "복사본 만들기",
+  "ui.create_sketch": "스케치 만들기",
+  "ui.current": "현재",
+  "ui.curvature": "곡률",
+  "ui.curves": "곡선",
+  "ui.cut": "잘라내기",
+  "ui.cylinder": "원통",
+  "ui.dark": "어둡게",
+  "ui.default_modelling_orientation": "기본 모델링 방향",
+  "ui.degrees_of_freedom": "자유도",
+  "ui.delete": "삭제",
+  "ui.depth": "깊이",
+  "ui.design": "디자인",
+  "ui.diameter": "지름",
+  "ui.dimension": "치수",
+  "ui.direction": "방향",
+  "ui.distance": "거리",
+  "ui.distance_1": "거리 1",
+  "ui.distance_2": "거리 2",
+  "ui.document_settings": "문서 설정",
+  "ui.don_t_save": "저장 안 함",
+  "ui.draft": "구배",
+  "ui.drawing": "도면",
+  "ui.drill_point": "드릴 선단",
+  "ui.edit": "편집",
+  "ui.edit_section_analysis": "단면 분석 편집",
+  "ui.ellipse": "타원",
+  "ui.end_radius": "끝 반지름",
+  "ui.entities": "요소",
+  "ui.equal": "동일",
+  "ui.expand": "펼치기",
+  "ui.export_ellipsis": "내보내기...",
+  "ui.extend": "연장",
+  "ui.extent_type": "범위 유형",
+  "ui.extrude": "돌출",
+  "ui.factor": "배율",
+  "ui.feature_history": "피처 기록",
+  "ui.feature_options": "피처 옵션",
+  "ui.features": "피처",
+  "ui.file": "파일",
+  "ui.fillet": "필렛",
+  "ui.finish_sketch": "스케치 종료",
+  "ui.fix_unfix": "고정/고정 해제",
+  "ui.flat": "플랫",
+  "ui.flip": "뒤집기",
+  "ui.front": "정면",
+  "ui.fully_constrained": "완전 구속",
+  "ui.general": "일반",
+  "ui.graphics": "그래픽",
+  "ui.heading_assemble": "조립",
+  "ui.heading_box": "박스",
+  "ui.heading_chamfer": "모따기",
+  "ui.heading_circular_pattern": "원형 패턴",
+  "ui.heading_coil": "코일",
+  "ui.heading_combine": "결합",
+  "ui.heading_construct": "구성",
+  "ui.heading_create": "만들기",
+  "ui.heading_create_sketch": "스케치 만들기",
+  "ui.heading_cylinder": "원통",
+  "ui.heading_design": "디자인",
+  "ui.heading_draft": "구배",
+  "ui.heading_edit": "편집",
+  "ui.heading_extrude": "돌출",
+  "ui.heading_fillet": "필렛",
+  "ui.heading_finish_sketch": "스케치 종료",
+  "ui.heading_front": "정면",
+  "ui.heading_hole": "구멍",
+  "ui.heading_home": "홈",
+  "ui.heading_insert": "삽입",
+  "ui.heading_inspect": "검사",
+  "ui.heading_loft": "로프트",
+  "ui.heading_measure": "측정",
+  "ui.heading_mesh": "메시",
+  "ui.heading_mirror": "대칭 복사",
+  "ui.heading_modify": "수정",
+  "ui.heading_move": "이동",
+  "ui.heading_offset": "오프셋",
+  "ui.heading_move_copy": "이동/복사",
+  "ui.heading_offset_plane": "오프셋 평면",
+  "ui.heading_ok": "확인",
+  "ui.heading_parameters": "매개변수",
+  "ui.heading_pattern_on_path": "경로 패턴",
+  "ui.heading_pipe": "파이프",
+  "ui.heading_plane_at_angle": "각도 평면",
+  "ui.heading_plastic": "플라스틱",
+  "ui.heading_rectangular_pattern": "직사각형 패턴",
+  "ui.heading_revolve": "회전",
+  "ui.heading_right": "우측면",
+  "ui.heading_scale": "축척",
+  "ui.heading_section_analysis": "단면 분석",
+  "ui.heading_select": "선택",
+  "ui.heading_sheet_metal": "판금",
+  "ui.heading_shell": "쉘",
+  "ui.heading_sketch": "스케치",
+  "ui.heading_sketch_palette": "스케치 팔레트",
+  "ui.heading_sketch_scale": "스케치 배율",
+  "ui.heading_solid": "솔리드",
+  "ui.heading_sphere": "구",
+  "ui.heading_split_body": "바디 분할",
+  "ui.heading_surface": "서피스",
+  "ui.heading_sweep": "스윕",
+  "ui.heading_thread": "나사산",
+  "ui.heading_top": "상면",
+  "ui.heading_torus": "토러스",
+  "ui.help": "도움말",
+  "ui.hide": "숨기기",
+  "ui.hole": "구멍",
+  "ui.hole_tap_type": "탭 유형",
+  "ui.hole_type": "구멍 유형",
+  "ui.home": "홈",
+  "ui.horizontal_vertical": "수평/수직",
+  "ui.insert": "삽입",
+  "ui.inspect": "검사",
+  "ui.intersect": "교차",
+  "ui.join": "접합",
+  "ui.joints": "조인트",
+  "ui.keyboard_shortcuts": "키보드 단축키",
+  "ui.language": "언어",
+  "ui.length_decimals": "길이 소수점 자릿수",
+  "ui.light": "밝게",
+  "ui.line": "선",
+  "ui.linetype": "선 종류",
+  "ui.loft": "로프트",
+  "ui.look_at": "바라보기",
+  "ui.manufacture": "제조",
+  "ui.measure": "측정",
+  "ui.midpoint": "중간점",
+  "ui.mirror": "대칭 복사",
+  "ui.mirror_line": "대칭선",
+  "ui.modify": "수정",
+  "ui.move": "이동",
+  "ui.multiple": "다중",
+  "ui.named_views": "명명된 뷰",
+  "ui.navigation": "탐색",
+  "ui.needs_design": "{command}: 먼저 디자인을 열어 주세요",
+  "ui.new_body": "새 바디",
+  "ui.new_design": "새 디자인",
+  "ui.normal": "일반",
+  "ui.object_type": "객체 유형",
+  "ui.objects": "객체",
+  "ui.offer_to_stand_up_y_up_files": "Y-up 파일을 Z-up으로 세우도록 제안",
+  "ui.offset": "오프셋",
+  "ui.offset_plane": "오프셋 평면",
+  "ui.one_side": "한 방향",
+  "ui.open": "열기",
+  "ui.open_ellipsis": "열기...",
+  "ui.open_preferences": "환경 설정 열기",
+  "ui.open_recent": "최근 항목 열기",
+  "ui.operation": "작업",
+  "ui.options": "옵션",
+  "ui.orbit_around": "궤도 회전 기준",
+  "ui.origin": "원점",
+  "ui.palette_points": "점",
+  "ui.palette_profile": "프로파일",
+  "ui.pan_zoom_orbit": "이동, 확대/축소, 궤도 회전",
+  "ui.parallel": "평행",
+  "ui.parameters": "매개변수",
+  "ui.paste": "붙여넣기",
+  "ui.path": "경로",
+  "ui.pattern_on_path": "경로 패턴",
+  "ui.perpendicular": "수직",
+  "ui.pipe": "파이프",
+  "ui.placement": "배치",
+  "ui.plane": "평면",
+  "ui.plane_at_angle": "각도 평면",
+  "ui.point": "점",
+  "ui.point_under_the_cursor": "커서 아래의 점",
+  "ui.points": "점",
+  "ui.polygon": "다각형",
+  "ui.preferences": "환경 설정",
+  "ui.profile": "프로파일",
+  "ui.profile_plane": "프로파일 평면",
+  "ui.profiles": "프로파일",
+  "ui.project": "투영",
+  "ui.quantity_2": "수량 2",
+  "ui.quantity": "수량",
+  "ui.quit": "종료",
+  "ui.radius": "반지름",
+  "ui.radius_type": "반지름 유형",
+  "ui.rectangle": "직사각형",
+  "ui.rectangular_pattern": "직사각형 패턴",
+  "ui.redo": "다시 실행",
+  "ui.render": "렌더",
+  "ui.reset_the_settings_on_this_page": "이 페이지의 설정 초기화",
+  "ui.restore_defaults": "기본값 복원",
+  "ui.reverse_zoom_direction": "확대/축소 방향 반전",
+  "ui.revolve": "회전",
+  "ui.right": "우측면",
+  "ui.save": "저장",
+  "ui.save_as": "다른 이름으로 저장",
+  "ui.save_as_ellipsis": "다른 이름으로 저장...",
+  "ui.scale": "축척",
+  "ui.section_analysis": "단면 분석",
+  "ui.select": "선택",
+  "ui.selection": "선택",
+  "ui.shell": "쉘",
+  "ui.show": "표시",
+  "ui.show_constraints": "구속 조건",
+  "ui.show_dimensions": "치수",
+  "ui.show_points": "점 표시",
+  "ui.show_profile": "프로파일 표시",
+  "ui.show_projected_geometries": "투영된 형상",
+  "ui.simple": "단순",
+  "ui.simulation": "시뮬레이션",
+  "ui.single": "단일",
+  "ui.sketch": "스케치",
+  "ui.sketch_dimension": "스케치 치수",
+  "ui.sketch_grid": "스케치 격자",
+  "ui.sketch_scale": "스케치 축척",
+  "ui.sketch_status": "스케치 상태",
+  "ui.sketches": "스케치",
+  "ui.slice": "슬라이스",
+  "ui.slot": "슬롯",
+  "ui.smooth": "부드럽게",
+  "ui.snap": "스냅",
+  "ui.spacing_2": "간격 2",
+  "ui.spacing": "간격",
+  "ui.sphere": "구",
+  "ui.spline": "스플라인",
+  "ui.split_body": "바디 분할",
+  "ui.start": "시작",
+  "ui.start_radius": "시작 반지름",
+  "ui.sweep": "스윕",
+  "ui.symmetric": "대칭",
+  "ui.symmetry": "대칭",
+  "ui.system": "시스템",
+  "ui.tangent": "접선",
+  "ui.taper_angle": "테이퍼 각도",
+  "ui.tapped": "탭",
+  "ui.text": "텍스트",
+  "ui.theme": "테마",
+  "ui.thickness": "두께",
+  "ui.thread": "나사산",
+  "ui.timeline_bottom": "하단 타임라인",
+  "ui.timeline_left_note": "왼쪽 레이아웃에서는 롤백 바가 부품 및 장면 브라우저 위에 표시됩니다.",
+  "ui.timeline_left_sidebar": "왼쪽 사이드바",
+  "ui.tip_angle": "선단 각도",
+  "ui.to_object": "객체까지",
+  "ui.top": "상면",
+  "ui.torus": "토러스",
+  "ui.trim": "트림",
+  "ui.two_sides": "양방향",
+  "ui.ui_scale": "UI 배율",
+  "ui.undo": "실행 취소",
+  "ui.units": "단위",
+  "ui.units_of_new_designs": "새 디자인의 단위",
+  "ui.untitled": "제목 없음",
+  "ui.variable": "가변",
+  "ui.view_centre": "뷰 중심",
+  "ui.visual_style": "시각 스타일",
+  "ui.workspace": "작업 공간",
+  "ui.y_distance": "Y 거리",
+  "ui.x_distance": "X 거리",
+  "ui.zoom_to_the_cursor": "커서 위치로 확대/축소",
+  "ui.animateJoint": "조인트 애니메이션",
+  "ui.calibrate": "캘리브레이션",
+  "ui.customizeToolbar": "도구 모음 사용자 지정…",
+  "ui.editJointLimits": "조인트 제한 편집",
+  "ui.exportDxf": "DXF 내보내기…",
+  "ui.findInTimeline": "타임라인에서 찾기",
+  "ui.findInWindow": "창에서 찾기",
+  "ui.fit": "맞춤",
+  "ui.groupSelected": "선택 항목 그룹화",
+  "ui.hideAxes": "축 숨기기",
+  "ui.hideDimension": "치수 숨기기",
+  "ui.hideOrigin": "원점 숨기기",
+  "ui.hidePlanes": "평면 숨기기",
+  "ui.hideProfile": "윤곽 숨기기",
+  "ui.homeView": "홈 보기",
+  "ui.isolate": "분리 표시",
+  "ui.lock": "잠금",
+  "ui.newSketchGroup": "새 스케치 그룹",
+  "ui.normalConstruction": "일반 / 생성",
+  "ui.orbit": "회전",
+  "ui.heading_position": "배치",
+  "ui.pan": "이동",
+  "ui.pinToShortcuts": "바로 가기에 고정",
+  "ui.pinToToolbar": "도구 모음에 고정",
+  "ui.properties": "속성",
+  "ui.removeSection": "단면 제거",
+  "ui.removeFromToolbar": "도구 모음에서 제거",
+  "ui.repeat": "반복",
+  "ui.report_a_bug": "버그 신고",
+  "ui.restore": "복원",
+  "ui.heading_setup": "설정",
+  "ui.selectOther": "기타 선택…",
+  "ui.selectTangentChain": "접선 체인 선택",
+  "ui.showAll": "모두 표시",
+  "ui.showAllBodies": "모두 표시",
+  "ui.showAxes": "축 표시",
+  "ui.showDimension": "치수 표시",
+  "ui.showOrigin": "원점 표시",
+  "ui.showPlanes": "평면 표시",
+  "ui.suppress": "비활성화",
+  "ui.command_palette_hint": "명령 입력(예: {example})  — 또는 S 키를 눌러 검색",
+  "ui.unground": "고정 해제",
+  "ui.unisolate": "분리 표시 해제",
+  "ui.unlock": "잠금 해제",
+  "ui.unsuppress": "비활성화 해제",
+  "ui.updateToCurrentView": "현재 보기로 업데이트",
+  "ui.zoom": "확대/축소",
+  "ui.command_done": "{command} 완료",
+  "cmd.appearance_assign": "외관",
+  "cmd.appearance_library": "외관 라이브러리",
+  "cmd.appearance_list": "외관 목록",
+  "cmd.body_rename": "바디 이름 변경",
+  "cmd.browser_group": "새 그룹",
+  "cmd.browser_move": "브라우저 항목 이동",
+  "cmd.browser_order": "브라우저 항목 정렬",
+  "cmd.browser_rename_group": "그룹 이름 변경",
+  "cmd.browser_ungroup": "그룹 해제",
+  "cmd.browser_visibility": "표시/숨기기",
+  "cmd.canvas_calibrate": "캔버스 보정",
+  "cmd.canvas_decal": "데칼",
+  "cmd.canvas_delete": "캔버스 삭제",
+  "cmd.canvas_edit": "캔버스 편집",
+  "cmd.canvas_insert": "캔버스",
+  "cmd.component_activate": "구성 요소 활성화",
+  "cmd.component_break_link": "링크 끊기",
+  "cmd.component_capture_position": "위치 캡처",
+  "cmd.component_create": "새 구성 요소",
+  "cmd.component_delete": "구성 요소 삭제",
+  "cmd.component_from_bodies": "바디로 구성 요소 만들기",
+  "cmd.component_insert_design": "설계 삽입",
+  "cmd.component_links": "링크 목록",
+  "cmd.component_list": "구성 요소 목록",
+  "cmd.component_move_bodies": "바디를 구성 요소로 이동",
+  "cmd.component_move_sketches": "스케치를 구성 요소로 이동",
+  "cmd.component_paste_new": "새로 붙여넣기",
+  "cmd.component_properties": "구성 요소 물리 속성",
+  "cmd.component_rename": "구성 요소 이름 변경",
+  "cmd.component_revert_position": "위치 복원",
+  "cmd.component_update_links": "링크 업데이트",
+  "cmd.config_activate": "구성 활성화",
+  "cmd.config_column": "구성 열",
+  "cmd.config_configure": "구성",
+  "cmd.config_preview": "구성 미리 보기",
+  "cmd.config_row": "구성 행",
+  "cmd.config_rule": "구성 규칙",
+  "cmd.config_rules": "구성 규칙",
+  "cmd.config_table": "구성 표시",
+  "cmd.construct_axis_edge": "모서리를 통과하는 축",
+  "cmd.construct_axis_normal_to_face": "면에 수직인 축",
+  "cmd.construct_axis_through_cylinder": "원기둥/원뿔/토러스를 통과하는 축",
+  "cmd.construct_axis_two_planes": "두 평면을 통과하는 축",
+  "cmd.construct_axis_two_points": "두 점을 통과하는 축",
+  "cmd.construct_plane_along_path": "경로를 따르는 평면",
+  "cmd.construct_plane_midplane": "중간 평면",
+  "cmd.construct_plane_perpendicular": "수직 평면",
+  "cmd.construct_plane_tangent": "접선 평면",
+  "cmd.construct_plane_three_points": "세 점을 통과하는 평면",
+  "cmd.construct_plane_two_edges": "두 모서리를 통과하는 평면",
+  "cmd.construct_point_along_path": "경로를 따르는 점",
+  "cmd.construct_point_center": "원/구/토러스 중심의 점",
+  "cmd.construct_point_edge_plane": "모서리와 평면의 점",
+  "cmd.construct_point_three_planes": "세 평면이 만나는 점",
+  "cmd.construct_point_two_edges": "두 모서리가 만나는 점",
+  "cmd.construct_point_vertex": "꼭짓점의 점",
+  "cmd.contact_check": "접촉 확인",
+  "cmd.contact_create": "새 접촉 집합",
+  "cmd.contact_disable_all": "접촉 비활성화",
+  "cmd.contact_edit": "접촉 집합 편집",
+  "cmd.contact_enable_all": "모든 접촉 활성화",
+  "cmd.contact_enable_sets": "접촉 집합 활성화",
+  "cmd.contact_list": "접촉 집합 목록",
+  "cmd.diagnostics_crash_report": "충돌 보고서",
+  "cmd.diagnostics_crash_reports": "충돌 보고서",
+  "cmd.diagnostics_crash_reports_clear": "충돌 보고서 삭제",
+  "cmd.diagnostics_crash_test": "충돌 테스트",
+  "cmd.doc_recover": "설계 복구",
+  "cmd.doc_recovery_discard": "복구된 설계 폐기",
+  "cmd.doc_recovery_list": "복구 가능한 설계",
+  "cmd.document_inspect": "설계 검사",
+  "cmd.document_units": "설계 단위 변경",
+  "cmd.edit_checkpoint": "체크포인트",
+  "cmd.edit_restore_checkpoint": "체크포인트 복원",
+  "cmd.engine_commands": "명령 목록",
+  "cmd.explode_create": "분해 보기",
+  "cmd.explode_delete": "분해 보기 삭제",
+  "cmd.explode_list": "분해 보기 목록",
+  "cmd.explode_show": "분해 보기 표시",
+  "cmd.expr_evaluate": "식 평가",
+  "cmd.face_delete": "면 삭제",
+  "cmd.file_export": "내보내기",
+  "cmd.file_insert_mesh": "메쉬 삽입",
+  "cmd.file_insert_step": "STEP 삽입",
+  "cmd.file_save_mesh": "메쉬로 저장",
+  "cmd.inspect_accessibility": "접근성 분석",
+  "cmd.inspect_center_of_mass": "무게중심",
+  "cmd.inspect_curvature_comb": "곡률빗 분석",
+  "cmd.inspect_curvature_map": "곡률맵 분석",
+  "cmd.inspect_draft": "블록각 분석",
+  "cmd.inspect_environment_map": "환경 맵 분석",
+  "cmd.inspect_interference": "간섭",
+  "cmd.inspect_isocurve": "등가곡선 분석",
+  "cmd.inspect_minimum_radius": "최소 반경 분석",
+  "cmd.inspect_zebra": "얼룩말줄무늬 분석",
+  "cmd.joint_as_built": "조립 상태 관절",
+  "cmd.joint_create": "관절",
+  "cmd.joint_delete": "관절 삭제",
+  "cmd.joint_drive": "관절 구동",
+  "cmd.joint_edit": "관절 편집",
+  "cmd.joint_limits": "관절 제한",
+  "cmd.joint_list": "관절 목록",
+  "cmd.joint_motion_link": "모션 링크",
+  "cmd.joint_origin": "관절 원점",
+  "cmd.joint_rigid_group": "강체 그룹",
+  "cmd.joint_solve": "관절 해석",
+  "cmd.material_assign": "물리 재질",
+  "cmd.material_create": "새 물리 재질",
+  "cmd.material_delete": "물리 재질 삭제",
+  "cmd.material_edit": "물리 재질 편집",
+  "cmd.material_list": "재질 목록",
+  "cmd.mesh_convert": "메쉬 변환",
+  "cmd.model_edges": "모서리 목록",
+  "cmd.model_faces": "면 목록",
+  "cmd.model_threads": "나사산 목록",
+  "cmd.motion_delete": "운동 연구 삭제",
+  "cmd.motion_export": "운동 연구 내보내기",
+  "cmd.motion_list": "운동 연구 목록",
+  "cmd.motion_play": "운동 연구 재생",
+  "cmd.motion_study": "운동 연구",
+  "cmd.occurrence_copy": "붙여넣기(인스턴스)",
+  "cmd.occurrence_ground": "고정",
+  "cmd.occurrence_move": "인스턴스 이동",
+  "cmd.occurrence_properties": "인스턴스 물리 속성",
+  "cmd.parameters_add": "사용자 매개 변수 추가",
+  "cmd.parameters_change": "매개 변수 변경",
+  "cmd.parameters_comment": "매개 변수에 설명 추가",
+  "cmd.parameters_complete": "식 완성",
+  "cmd.parameters_delete": "매개 변수 삭제",
+  "cmd.parameters_export": "매개 변수 내보내기",
+  "cmd.parameters_favorite": "즐겨찾는 매개 변수",
+  "cmd.parameters_graph": "매개 변수 그래프",
+  "cmd.parameters_import": "매개 변수 가져오기",
+  "cmd.parameters_list": "매개 변수 목록",
+  "cmd.parameters_rename": "매개 변수 이름 변경",
+  "cmd.parameters_users": "매개 변수 사용처",
+  "cmd.parts_fastener": "체결 부품 삽입",
+  "cmd.parts_insert": "부품 삽입",
+  "cmd.parts_library": "표준 부품",
+  "cmd.parts_resize": "부품 크기 변경",
+  "cmd.plastic_assign_rule": "플라스틱 규칙 지정",
+  "cmd.plastic_boss": "보스",
+  "cmd.plastic_lip": "리프",
+  "cmd.plastic_manage_rules": "플라스틱 규칙 관리",
+  "cmd.plastic_rest": "레스트",
+  "cmd.plastic_rules": "플라스틱 규칙 목록",
+  "cmd.plastic_snap_fit": "스냅핏",
+  "cmd.select_clear": "선택 지우기",
+  "cmd.sheet_convert": "판금으로 변환",
+  "cmd.sheet_export_bend_table": "벤딩 표 내보내기",
+  "cmd.sheet_export_dxf": "전개도를 DXF로 내보내기",
+  "cmd.sheet_flange": "플랜지",
+  "cmd.sheet_flat_pattern": "전개도 만들기",
+  "cmd.sheet_fold": "접기",
+  "cmd.sheet_hem": "헴",
+  "cmd.sheet_manage_rules": "판금 규칙",
+  "cmd.sheet_refold": "다시 접기",
+  "cmd.sheet_rules": "판금 규칙 목록",
+  "cmd.sheet_unfold": "펼치기",
+  "cmd.sketch_arc_center_point": "중심점 호",
+  "cmd.sketch_arc_tangent": "접선 호",
+  "cmd.sketch_arc_three_point": "3점 호",
+  "cmd.sketch_auto_constrain": "자동 구속",
+  "cmd.sketch_auto_constrain_from_datum": "기준으로 자동 구속",
+  "cmd.sketch_auto_project": "참조에 모서리 자동 투영",
+  "cmd.sketch_blend_curve": "블렌드 곡선",
+  "cmd.sketch_chain": "연속",
+  "cmd.sketch_chamfer_distance_angle": "거리와 각도 모따기",
+  "cmd.sketch_chamfer_equal_distance": "등거리 모따기",
+  "cmd.sketch_chamfer_two_distance": "두 거리 모따기",
+  "cmd.sketch_circle_center": "중심 지름 원",
+  "cmd.sketch_circle_three_point": "3점 원",
+  "cmd.sketch_circle_three_tangent": "3접선 원",
+  "cmd.sketch_circle_two_point": "2점 원",
+  "cmd.sketch_circle_two_tangent": "2접선 원",
+  "cmd.sketch_constrainer": "스케치 구속기",
+  "cmd.sketch_constraint_fix": "고정/고정 해제",
+  "cmd.sketch_constraint_midpoint": "중간점",
+  "cmd.sketch_construction": "일반/구성선",
+  "cmd.sketch_delete": "스케치 개체 삭제",
+  "cmd.sketch_dimension_text": "치수 텍스트 이동",
+  "cmd.sketch_drag": "스케치 기하 드래그",
+  "cmd.sketch_drag_end": "스케치 드래그 종료",
+  "cmd.sketch_draw_dimensioned": "치수가 있는 스케치 개체 그리기",
+  "cmd.sketch_edit": "스케치 편집",
+  "cmd.sketch_edit_text": "텍스트 편집",
+  "cmd.sketch_export_dxf": "DXF로 저장",
+  "cmd.sketch_finish_auto_constrain": "자동 구속으로 완료",
+  "cmd.sketch_fit_curves_to_section": "메시 단면에 곡선 맞추기",
+  "cmd.sketch_glyphs": "구속 기호",
+  "cmd.sketch_include_3d": "3D 기하 포함",
+  "cmd.sketch_insert_dxf": "DXF 삽입",
+  "cmd.sketch_insert_svg": "SVG 삽입",
+  "cmd.sketch_inspect": "스케치 검사",
+  "cmd.sketch_intersection_curve": "교차 곡선",
+  "cmd.sketch_isoparametric_curve": "등매개 곡선",
+  "cmd.sketch_line3d": "3D 선",
+  "cmd.sketch_line_midpoint": "중점 선",
+  "cmd.sketch_move": "스케치 개체 이동/복사",
+  "cmd.sketch_move3d": "3D 점 이동",
+  "cmd.sketch_move_point": "스케치 점 드래그",
+  "cmd.sketch_offset_break": "오프셋 연결 끊기",
+  "cmd.sketch_options": "스케치 팔레트 옵션",
+  "cmd.sketch_point3d": "3D 점",
+  "cmd.sketch_polygon_circumscribed": "외접 다각형",
+  "cmd.sketch_polygon_edge": "변 다각형",
+  "cmd.sketch_polygon_inscribed": "내접 다각형",
+  "cmd.sketch_project_to_surface": "곡면으로 투영",
+  "cmd.sketch_rectangle_center": "중심 사각형",
+  "cmd.sketch_rectangle_three_point": "3점 사각형",
+  "cmd.sketch_rectangle_two_point": "2점 사각형",
+  "cmd.sketch_redefine": "스케치 평면 재정의",
+  "cmd.sketch_slot_arc_center": "중심점 호 슬롯",
+  "cmd.sketch_slot_arc_three_point": "3점 호 슬롯",
+  "cmd.sketch_slot_center_point": "중심점 슬롯",
+  "cmd.sketch_slot_center_to_center": "중심에서 중심 슬롯",
+  "cmd.sketch_slot_overall": "전장 슬롯",
+  "cmd.sketch_snap": "스냅 추론",
+  "cmd.sketch_solve": "스케치 해석",
+  "cmd.sketch_spline3d": "3D 스플라인",
+  "cmd.sketch_spline_control_point": "제어점 스플라인",
+  "cmd.sketch_spline_control_point_5": "제어점 스플라인(5차)",
+  "cmd.sketch_spline_fit_point": "맞춤점 스플라인",
+  "cmd.sketch_spun_profile": "회전 프로파일",
+  "cmd.sketch_toggle_driven": "종속 치수 전환",
+  "cmd.solid_align": "정렬",
+  "cmd.solid_boundary_fill": "경계 채우기",
+  "cmd.solid_bounding_solid": "둘러싸는 솔리드",
+  "cmd.solid_emboss": "엠보스",
+  "cmd.solid_move": "이동/복사",
+  "cmd.solid_offset_face": "면 오프셋",
+  "cmd.solid_press_pull": "밀기/당기기",
+  "cmd.solid_remove": "제거",
+  "cmd.solid_replace_face": "면 교체",
+  "cmd.solid_rib": "리브",
+  "cmd.solid_split_face": "면 분할",
+  "cmd.solid_web": "웹",
+  "cmd.surface_patch": "패치",
+  "cmd.surface_stitch": "재봉",
+  "cmd.surface_thicken": "두께 주기",
+  "cmd.surface_extrude": "서피스 돌출",
+  "cmd.surface_revolve": "서피스 회전",
+  "cmd.surface_sweep": "서피스 스윕",
+  "cmd.surface_loft": "서피스 로프트",
+  "cmd.surface_ruled": "룰드 서피스",
+  "cmd.surface_boundary": "바운더리 서피스",
+  "cmd.surface_offset": "오프셋 서피스",
+  "cmd.surface_blend": "블렌드 서피스",
+  "cmd.surface_fillet": "서피스 필렛",
+  "cmd.surface_untrim": "트림 해제",
+  "cmd.surface_unstitch": "스티치 해제",
+  "cmd.surface_reverse_normal": "법선 반전",
+  "cmd.inspect_continuity": "연속성 분석",
+  "cmd.timeline_compute_all": "모두 다시 계산",
+  "cmd.timeline_copy": "특성 복사",
+  "cmd.timeline_dependents": "특성 종속 항목",
+  "cmd.timeline_inspect": "특성 검사",
+  "cmd.timeline_paste": "특성 붙여넣기",
+  "cmd.timeline_redefine": "특성 편집",
+  "cmd.timeline_rename": "이름 변경",
+  "cmd.timeline_reorder": "특성 순서 변경",
+  "cmd.timeline_roll_to": "이력 마커 이동",
+  "cmd.timeline_rollback": "타임라인 마커 이동",
+  "cmd.timeline_suppress": "특성 비활성화",
+  "cmd.view_apply": "이름 있는 보기 복원",
+  "cmd.view_delete": "이름 있는 보기 삭제",
+  "cmd.view_list": "이름 있는 보기 목록",
+  "cmd.view_rename": "이름 있는 보기 이름 변경",
+  "cmd.view_save": "새 이름 있는 보기",
+  "ui.export_ellipsis_keymap": "내보내기…",
+  "ui.heading_configure": "구성",
+  "ui.heading_constraints": "구속 조건",
+  "ui.heading_utilities": "유틸리티",
+  "BROWSER": "브라우저",
+  "Drive Joint": "조인트 구동",
+  "Edit Profile Sketch": "윤곽 스케치 편집",
+  "Find in Browser": "브라우저에서 찾기",
+  "Report a bug — review a screenshot and open a GitHub draft": "버그 신고 — 스크린샷을 검토하고 GitHub 초안 열기",
+  "Reset Toolbar": "도구 모음 재설정",
+  "Select bodies (a face picks its body)": "바디 선택(면을 클릭하면 해당 바디 선택)",
+  "Selection filter": "선택 필터",
+  "Revert Position": "위치 복원",
+  "Construction": "구성선",
+  "Faces": "면",
+  "Edges": "모서리",
+  "Vertices": "꼭짓점",
+  "Sketch geometry and profiles": "스케치 기하 및 프로파일",
+  "Sketch curves": "스케치 곡선",
+  "Sketch points": "스케치 점",
+  "Sketch dimensions": "스케치 치수",
+  "Sketch constraints": "스케치 구속 조건",
+  "Flat": "플랫",
+  "cmd.render_backends": "렌더링 백엔드",
+  "cmd.view_navigate": "보기 탐색",
+  "timeline.group": "새 특성 폴더",
+  "timeline.ungroup": "특성 폴더 제거",
+  "timeline.rename_group": "특성 폴더 이름 변경",
+  "timeline.move_to_group": "특성을 폴더로 이동",
+  "timeline.move_many": "타임라인 항목 이동",
+  "timeline.reorder_many": "특성 순서 변경",
+  "ui.show_construction_geometries": "구성 형상",
+  "ui.total_angle": "전진 각도",
+  "sketch_text.builtin_font": "{family}(내장)",
+  "sketch_text.font_search": "글꼴 검색",
+  "sketch_text.loading_fonts": "설치된 글꼴을 찾는 중…",
+  "sketch_text.use_font_file": "글꼴 파일 {path} 사용",
+  "sketch_text.bold": "굵게",
+  "sketch_text.italic": "기울임꼴",
+  "sketch_text.align_left": "왼쪽",
+  "sketch_text.align_center": "가운데",
+  "sketch_text.align_right": "오른쪽",
+  "sketch_text.path_hint": "텍스트가 따라갈 스케치 곡선: 여기를 클릭한 다음 곡선을 클릭",
+  "sketch_text.path_clear": "곡선에서 텍스트 떼기",
+  "sketch_text.on_path": "텍스트가 경로를 따릅니다: 위치는 곡선이 정합니다"
+}
@@ -0,0 +1,961 @@
+{
+  "browser.body_name": "实体{number}",
+  "browser.component_name": "组件{number}",
+  "browser.parameters": "参数 ({count})",
+  "browser.precision": "精度: {precision}",
+  "browser.sketch_name": "草图{number}",
+  "browser.units": "单位: {units}",
+  "cmd.appearance_assign": "外观",
+  "cmd.appearance_library": "外观库",
+  "cmd.appearance_list": "列出外观",
+  "cmd.body_rename": "重命名实体",
+  "cmd.browser_group": "新建组",
+  "cmd.browser_move": "移动浏览器项目",
+  "cmd.browser_order": "排列浏览器项目",
+  "cmd.browser_rename_group": "重命名组",
+  "cmd.browser_ungroup": "取消编组",
+  "cmd.browser_visibility": "显示/隐藏",
+  "cmd.canvas_calibrate": "校准画布",
+  "cmd.canvas_decal": "贴花",
+  "cmd.canvas_delete": "删除画布",
+  "cmd.canvas_edit": "编辑画布",
+  "cmd.canvas_insert": "画布",
+  "cmd.component_activate": "激活组件",
+  "cmd.component_break_link": "断开链接",
+  "cmd.component_capture_position": "捕获位置",
+  "cmd.component_create": "新建组件",
+  "cmd.component_delete": "删除组件",
+  "cmd.component_from_bodies": "由实体创建组件",
+  "cmd.component_insert_design": "插入设计",
+  "cmd.component_links": "列出链接",
+  "cmd.component_list": "列出组件",
+  "cmd.component_move_bodies": "将实体移至组件",
+  "cmd.component_move_sketches": "将草图移至组件",
+  "cmd.component_paste_new": "粘贴为新对象",
+  "cmd.component_properties": "组件物理属性",
+  "cmd.component_rename": "重命名组件",
+  "cmd.component_revert_position": "恢复位置",
+  "cmd.component_update_links": "更新链接",
+  "cmd.config_activate": "激活配置",
+  "cmd.config_column": "配置列",
+  "cmd.config_configure": "配置",
+  "cmd.config_preview": "预览配置",
+  "cmd.config_row": "配置行",
+  "cmd.config_rule": "配置规则",
+  "cmd.config_rules": "配置规则",
+  "cmd.config_table": "显示配置表",
+  "cmd.construct_axis_edge": "过边的轴",
+  "cmd.construct_axis_normal_to_face": "垂直于面的轴",
+  "cmd.construct_axis_through_cylinder": "过圆柱/圆锥/圆环的轴",
+  "cmd.construct_axis_two_planes": "过两个平面的轴",
+  "cmd.construct_axis_two_points": "过两点的轴",
+  "cmd.construct_plane_along_path": "沿路径的平面",
+  "cmd.construct_plane_midplane": "中平面",
+  "cmd.construct_plane_perpendicular": "垂直平面",
+  "cmd.construct_plane_tangent": "相切平面",
+  "cmd.construct_plane_three_points": "过三点的平面",
+  "cmd.construct_plane_two_edges": "过两条边的平面",
+  "cmd.construct_point_along_path": "沿路径的点",
+  "cmd.construct_point_center": "圆/球/圆环中心的点",
+  "cmd.construct_point_edge_plane": "边与平面交点",
+  "cmd.construct_point_three_planes": "过三个平面的点",
+  "cmd.construct_point_two_edges": "过两条边的点",
+  "cmd.construct_point_vertex": "顶点处的点",
+  "cmd.contact_check": "检查接触",
+  "cmd.contact_create": "新建接触集",
+  "cmd.contact_disable_all": "禁用接触",
+  "cmd.contact_edit": "编辑接触集",
+  "cmd.contact_enable_all": "启用全部接触",
+  "cmd.contact_enable_sets": "启用接触集",
+  "cmd.contact_list": "列出接触集",
+  "cmd.diagnostics_crash_report": "崩溃报告",
+  "cmd.diagnostics_crash_reports": "崩溃报告",
+  "cmd.diagnostics_crash_reports_clear": "删除崩溃报告",
+  "cmd.diagnostics_crash_test": "崩溃测试",
+  "cmd.doc_recover": "恢复设计",
+  "cmd.doc_recovery_discard": "丢弃已恢复的设计",
+  "cmd.doc_recovery_list": "可恢复的设计",
+  "cmd.document_inspect": "检查设计",
+  "cmd.document_units": "更改设计单位",
+  "cmd.edit_checkpoint": "检查点",
+  "cmd.edit_restore_checkpoint": "恢复检查点",
+  "cmd.engine_commands": "列出命令",
+  "cmd.explode_create": "爆炸图",
+  "cmd.explode_delete": "删除爆炸图",
+  "cmd.explode_list": "列出爆炸图",
+  "cmd.explode_show": "显示爆炸图",
+  "cmd.expr_evaluate": "计算表达式",
+  "cmd.face_delete": "删除面",
+  "cmd.file_export": "导出",
+  "cmd.file_insert_mesh": "插入网格",
+  "cmd.file_insert_step": "插入 STEP",
+  "cmd.file_save_mesh": "另存为网格",
+  "cmd.inspect_accessibility": "可达性分析",
+  "cmd.inspect_center_of_mass": "质心",
+  "cmd.inspect_curvature_comb": "曲率梳分析",
+  "cmd.inspect_curvature_map": "曲率图分析",
+  "cmd.inspect_draft": "拔模分析",
+  "cmd.inspect_environment_map": "环境贴图分析",
+  "cmd.inspect_interference": "干涉",
+  "cmd.inspect_isocurve": "等参线分析",
+  "cmd.inspect_minimum_radius": "最小半径分析",
+  "cmd.inspect_zebra": "斑马纹分析",
+  "cmd.joint_as_built": "现状接头",
+  "cmd.joint_create": "接头",
+  "cmd.joint_delete": "删除接头",
+  "cmd.joint_drive": "驱动接头",
+  "cmd.joint_edit": "编辑接头",
+  "cmd.joint_limits": "接头限制",
+  "cmd.joint_list": "列出接头",
+  "cmd.joint_motion_link": "运动关联",
+  "cmd.joint_origin": "接头原点",
+  "cmd.joint_rigid_group": "刚性组",
+  "cmd.joint_solve": "解算接头",
+  "cmd.material_assign": "物理材质",
+  "cmd.material_create": "新建物理材质",
+  "cmd.material_delete": "删除物理材质",
+  "cmd.material_edit": "编辑物理材质",
+  "cmd.material_list": "列出材质",
+  "cmd.mesh_convert": "转换网格",
+  "cmd.model_edges": "列出边",
+  "cmd.model_faces": "列出面",
+  "cmd.model_threads": "列出螺纹",
+  "cmd.motion_delete": "删除运动研究",
+  "cmd.motion_export": "导出运动研究",
+  "cmd.motion_list": "列出运动研究",
+  "cmd.motion_play": "播放运动研究",
+  "cmd.motion_study": "运动研究",
+  "cmd.occurrence_copy": "粘贴（实例）",
+  "cmd.occurrence_ground": "固定",
+  "cmd.occurrence_move": "移动实例",
+  "cmd.occurrence_properties": "实例物理属性",
+  "cmd.parameters_add": "添加用户参数",
+  "cmd.parameters_change": "更改参数",
+  "cmd.parameters_comment": "注释参数",
+  "cmd.parameters_complete": "补全表达式",
+  "cmd.parameters_delete": "删除参数",
+  "cmd.parameters_export": "导出参数",
+  "cmd.parameters_favorite": "收藏参数",
+  "cmd.parameters_graph": "参数关系图",
+  "cmd.parameters_import": "导入参数",
+  "cmd.parameters_list": "列出参数",
+  "cmd.parameters_rename": "重命名参数",
+  "cmd.parameters_users": "参数使用者",
+  "cmd.parts_fastener": "插入紧固件",
+  "cmd.parts_insert": "插入零件",
+  "cmd.parts_library": "标准零件",
+  "cmd.parts_resize": "更改零件尺寸",
+  "cmd.plastic_assign_rule": "指定塑料规则",
+  "cmd.plastic_boss": "凸台",
+  "cmd.plastic_lip": "凸缘",
+  "cmd.plastic_manage_rules": "管理塑料规则",
+  "cmd.plastic_rest": "垫块",
+  "cmd.plastic_rules": "列出塑料规则",
+  "cmd.plastic_snap_fit": "卡扣",
+  "cmd.select_clear": "清除选择",
+  "cmd.sheet_convert": "转换为钣金",
+  "cmd.sheet_export_bend_table": "导出折弯表",
+  "cmd.sheet_export_dxf": "将展开图导出为 DXF",
+  "cmd.sheet_flange": "法兰",
+  "cmd.sheet_flat_pattern": "创建展开图",
+  "cmd.sheet_fold": "折叠",
+  "cmd.sheet_hem": "卷边",
+  "cmd.sheet_manage_rules": "钣金规则",
+  "cmd.sheet_refold": "重新折弯",
+  "cmd.sheet_rules": "列出钣金规则",
+  "cmd.sheet_unfold": "展开",
+  "cmd.sketch_arc_center_point": "中心点圆弧",
+  "cmd.sketch_arc_tangent": "相切圆弧",
+  "cmd.sketch_arc_three_point": "三点圆弧",
+  "cmd.sketch_auto_constrain": "自动约束",
+  "cmd.sketch_auto_constrain_from_datum": "基于基准自动约束",
+  "cmd.sketch_auto_project": "自动投影边到参考",
+  "cmd.sketch_blend_curve": "混合曲线",
+  "cmd.sketch_chain": "连续链",
+  "cmd.sketch_chamfer_distance_angle": "距离和角度倒角",
+  "cmd.sketch_chamfer_equal_distance": "等距倒角",
+  "cmd.sketch_chamfer_two_distance": "双距离倒角",
+  "cmd.sketch_circle_center": "圆心直径圆",
+  "cmd.sketch_circle_three_point": "三点圆",
+  "cmd.sketch_circle_three_tangent": "三切线圆",
+  "cmd.sketch_circle_two_point": "两点圆",
+  "cmd.sketch_circle_two_tangent": "两切线圆",
+  "cmd.sketch_constrainer": "草图约束器",
+  "cmd.sketch_constraint_fix": "固定/解除固定",
+  "cmd.sketch_constraint_midpoint": "中点",
+  "cmd.sketch_construction": "普通/构造",
+  "cmd.sketch_delete": "删除草图图元",
+  "cmd.sketch_dimension_text": "移动尺寸文字",
+  "cmd.sketch_drag": "拖动草图几何",
+  "cmd.sketch_drag_end": "结束草图拖动",
+  "cmd.sketch_draw_dimensioned": "绘制带尺寸的草图图元",
+  "cmd.sketch_edit": "编辑草图",
+  "cmd.sketch_edit_text": "编辑文字",
+  "cmd.sketch_export_dxf": "另存为 DXF",
+  "cmd.sketch_finish_auto_constrain": "使用自动约束完成",
+  "cmd.sketch_fit_curves_to_section": "将曲线拟合到网格截面",
+  "cmd.sketch_glyphs": "约束符号",
+  "cmd.sketch_include_3d": "包含三维几何",
+  "cmd.sketch_insert_dxf": "插入 DXF",
+  "cmd.sketch_insert_svg": "插入 SVG",
+  "cmd.sketch_inspect": "检查草图",
+  "cmd.sketch_intersection_curve": "相交曲线",
+  "cmd.sketch_isoparametric_curve": "等参数曲线",
+  "cmd.sketch_line3d": "三维直线",
+  "cmd.sketch_line_midpoint": "中点线",
+  "cmd.sketch_move": "移动/复制草图图元",
+  "cmd.sketch_move3d": "移动三维点",
+  "cmd.sketch_move_point": "拖动草图点",
+  "cmd.sketch_offset_break": "断开偏移关联",
+  "cmd.sketch_options": "草图选项板选项",
+  "cmd.sketch_point3d": "三维点",
+  "cmd.sketch_polygon_circumscribed": "外切多边形",
+  "cmd.sketch_polygon_edge": "边长多边形",
+  "cmd.sketch_polygon_inscribed": "内接多边形",
+  "cmd.sketch_project_to_surface": "投影到曲面",
+  "cmd.sketch_rectangle_center": "中心矩形",
+  "cmd.sketch_rectangle_rounded": "圆角矩形",
+  "cmd.sketch_rectangle_three_point": "三点矩形",
+  "cmd.sketch_rectangle_two_point": "两点矩形",
+  "cmd.sketch_redefine": "重定义草图平面",
+  "cmd.sketch_slot_arc_center": "中心点圆弧槽",
+  "cmd.sketch_slot_arc_three_point": "三点圆弧槽",
+  "cmd.sketch_slot_center_point": "中心点槽",
+  "cmd.sketch_slot_center_to_center": "中心距槽",
+  "cmd.sketch_slot_overall": "全长槽",
+  "cmd.sketch_snap": "捕捉推断",
+  "cmd.sketch_solve": "解算草图",
+  "cmd.sketch_spline3d": "三维样条曲线",
+  "cmd.sketch_spline_control_point": "控制点样条曲线",
+  "cmd.sketch_spline_control_point_5": "控制点样条曲线（5 次）",
+  "cmd.sketch_spline_fit_point": "拟合点样条曲线",
+  "cmd.sketch_spun_profile": "旋转轮廓",
+  "cmd.sketch_toggle_driven": "切换被驱动尺寸",
+  "cmd.solid_align": "对齐",
+  "cmd.solid_boundary_fill": "边界填充",
+  "cmd.solid_bounding_solid": "包围实体",
+  "cmd.solid_emboss": "压印",
+  "cmd.solid_move": "移动/复制",
+  "cmd.solid_offset_face": "偏移面",
+  "cmd.solid_press_pull": "按压拖动",
+  "cmd.solid_remove": "移除",
+  "cmd.solid_replace_face": "替换面",
+  "cmd.solid_rib": "筋板",
+  "cmd.solid_split_face": "拆分面",
+  "cmd.solid_web": "网格筋",
+  "cmd.surface_patch": "补面",
+  "cmd.surface_stitch": "缝合",
+  "cmd.surface_thicken": "加厚",
+  "cmd.surface_extrude": "曲面拉伸",
+  "cmd.surface_revolve": "曲面旋转",
+  "cmd.surface_sweep": "曲面扫掠",
+  "cmd.surface_loft": "曲面放样",
+  "cmd.surface_ruled": "直纹曲面",
+  "cmd.surface_boundary": "边界曲面",
+  "cmd.surface_offset": "偏移曲面",
+  "cmd.surface_blend": "混合曲面",
+  "cmd.surface_fillet": "曲面圆角",
+  "cmd.surface_untrim": "取消修剪",
+  "cmd.surface_unstitch": "取消缝合",
+  "cmd.surface_reverse_normal": "反转法向",
+  "cmd.inspect_continuity": "连续性分析",
+  "cmd.timeline_compute_all": "全部重新計算",
+  "cmd.timeline_copy": "复制特征",
+  "cmd.timeline_dependents": "特征依存项",
+  "cmd.timeline_inspect": "检查特征",
+  "cmd.timeline_paste": "粘贴特征",
+  "cmd.timeline_redefine": "编辑特征",
+  "cmd.timeline_rename": "重命名",
+  "cmd.timeline_reorder": "重排特征",
+  "cmd.timeline_roll_to": "滚动历史标记",
+  "cmd.timeline_rollback": "移动时间线标记",
+  "cmd.timeline_suppress": "抑制特征",
+  "cmd.view_apply": "还原命名视图",
+  "cmd.view_delete": "删除命名视图",
+  "cmd.view_list": "列出命名视图",
+  "cmd.view_rename": "重命名命名视图",
+  "cmd.view_save": "新建命名视图",
+  "dialog.custom_axis": "↖ 自定义轴",
+  "dialog.edit_title": "编辑 {title}",
+  "dialog.select": "↖ 选择",
+  "dialog.selected_count": "↖ 已选择 {count} 个",
+  "dialog.step": "步骤",
+  "dialog.selection_step": "第 {step} 步，共 {total} 步：选择{input}",
+  "dialog.selection_guidance": "选择输入项进行修改。点击已选对象可取消选择；按住 Ctrl/Cmd 点击也可切换选择。检查预览后，再按“确定”。",
+  "document.save_changes": "保存对 {name} 的更改？",
+  "document.unsaved_changes": "{name} 有未保存的更改。如果不保存，将丢失这些更改。",
+  "settings.msaa_applies_on_restart": "抗锯齿将在下次启动 SolidCraft 时生效",
+  "settings.msaa_reset": "{setting}: {requested}× 不受此图形设备支持；已重置为 {reset}× (支持: {supported})。",
+  "settings.msaa_unsupported": "此图形设备不支持",
+  "settings.reset_intro": "这些设置在此计算机上无法正常工作，会导致 SolidCraft 无法启动，因此已更改：",
+  "settings.reset_title": "设置已更改",
+  "sketch.degrees_of_freedom": "{count} 个自由度",
+  "sketch.draw_curves": "绘制为 {linetype}",
+  "sketch.make_selection": "将选择转换为 {linetype}",
+  "ui.1_degree_of_freedom": "1 个自由度",
+  "ui.3d_mouse_speed": "3D 鼠标速度",
+  "ui.3d_mouse_windows": "3D 鼠标（Windows）",
+  "ui.3d_sketch": "3D 草图",
+  "ui.about": "关于",
+  "ui.activate": "激活",
+  "ui.active_component": "活动组件",
+  "ui.agent_cursor": "代理光标",
+  "ui.agent_cursor_speed": "代理光标速度",
+  "ui.all": "全部",
+  "ui.angle": "角度",
+  "ui.angle_decimals": "角度小数位",
+  "ui.animate_view_changes": "视图变化动画",
+  "ui.animation": "动画",
+  "ui.animation_speed": "动画速度",
+  "ui.anti_aliasing": "抗锯齿",
+  "ui.apply": "应用",
+  "ui.arc": "圆弧",
+  "ui.assemble": "装配",
+  "ui.autosave_every": "自动保存间隔",
+  "ui.axes": "轴",
+  "ui.axis": "轴",
+  "ui.base_point": "基点",
+  "ui.bodies": "实体",
+  "ui.box": "长方体",
+  "ui.break": "打断",
+  "ui.cancel": "取消",
+  "ui.canvases": "画布",
+  "ui.center": "中心",
+  "ui.centerline": "中心线",
+  "ui.chain": "链",
+  "ui.chamfer": "倒角",
+  "ui.chamfer_type": "倒角类型",
+  "ui.change_workspace": "更改工作区",
+  "ui.chord_length": "弦长",
+  "ui.curvature_g2": "曲率连续 (G2)",
+  "ui.equivalent_radius": "等效半径",
+  "ui.circle": "圆",
+  "ui.circular_pattern": "圆形阵列",
+  "ui.clear": "清除",
+  "ui.clear_recent": "清除最近",
+  "ui.clear_the_selection": "清除选择",
+  "ui.click_selects_whole_bodies": "单击选择整个实体",
+  "ui.click_then_press_key": "单击，然后按新按键",
+  "ui.close": "关闭",
+  "ui.coil": "螺旋",
+  "ui.coincident": "重合",
+  "ui.collapse": "折叠",
+  "ui.collinear": "共线",
+  "ui.combine": "组合",
+  "ui.coming_later": "即将推出",
+  "ui.concentric": "同心",
+  "ui.configurations": "配置",
+  "ui.conic_curve": "圆锥曲线",
+  "ui.constant": "恒定",
+  "ui.constraints_conflict": "约束冲突",
+  "ui.construct": "构造",
+  "ui.construction": "构造",
+  "ui.context_menu": "上下文菜单",
+  "ui.copy": "复制",
+  "ui.corners": "角点",
+  "ui.corner": "角",
+  "ui.counterbore": "沉头孔",
+  "ui.countersink": "锥形沉孔",
+  "ui.create": "创建",
+  "ui.create_copy": "创建副本",
+  "ui.create_sketch": "创建草图",
+  "ui.current": "当前",
+  "ui.curvature": "曲率",
+  "ui.curves": "曲线",
+  "ui.cut": "剪切",
+  "ui.cylinder": "圆柱体",
+  "ui.dark": "深色",
+  "ui.default_modelling_orientation": "默认建模方向",
+  "ui.degrees_of_freedom": "自由度",
+  "ui.delete": "删除",
+  "ui.depth": "深度",
+  "ui.design": "设计",
+  "ui.diameter": "直径",
+  "ui.dimension": "尺寸",
+  "ui.direction": "方向",
+  "ui.distance": "距离",
+  "ui.distance_1": "距离 1",
+  "ui.distance_2": "距离 2",
+  "ui.document_settings": "文档设置",
+  "ui.don_t_save": "不保存",
+  "ui.draft": "拔模",
+  "ui.drawing": "绘图",
+  "ui.drill_point": "钻尖",
+  "ui.edit": "编辑",
+  "ui.ellipse": "椭圆",
+  "ui.end_radius": "结束半径",
+  "ui.entities": "实体",
+  "ui.equal": "相等",
+  "ui.expand": "展开",
+  "ui.export_ellipsis": "导出...",
+  "ui.export_ellipsis_keymap": "导出…",
+  "ui.export_keymap_tip": "将按键、S 框收藏和工具栏导出为文件",
+  "ui.extend": "延伸",
+  "ui.extent_type": "延伸类型",
+  "ui.extrude": "拉伸",
+  "ui.factor": "系数",
+  "ui.feature_history": "特征历史",
+  "ui.feature_options": "特征选项",
+  "ui.features": "特征",
+  "ui.file": "文件",
+  "ui.fillet": "圆角",
+  "ui.filter_commands_or_keys": "筛选命令或按键",
+  "ui.finish_sketch": "完成草图",
+  "ui.fix_unfix": "固定/取消固定",
+  "ui.flat": "平面",
+  "ui.flip": "翻转",
+  "ui.front": "前视",
+  "ui.fully_constrained": "完全约束",
+  "ui.general": "常规",
+  "ui.graphics": "图形",
+  "ui.ground_shadow": "地面阴影",
+  "ui.heading_add_ins": "加载项",
+  "ui.heading_assemble": "装配",
+  "ui.heading_box": "长方体",
+  "ui.heading_chamfer": "倒角",
+  "ui.heading_circular_pattern": "圆形阵列",
+  "ui.heading_coil": "螺旋",
+  "ui.heading_combine": "组合",
+  "ui.heading_configure": "配置",
+  "ui.heading_constraints": "约束",
+  "ui.heading_construct": "构造",
+  "ui.heading_create": "创建",
+  "ui.heading_create_sketch": "创建草图",
+  "ui.heading_cylinder": "圆柱体",
+  "ui.heading_design": "设计",
+  "ui.heading_draft": "拔模",
+  "ui.heading_edit": "编辑",
+  "ui.heading_extrude": "拉伸",
+  "ui.heading_fillet": "圆角",
+  "ui.heading_finish_sketch": "完成草图",
+  "ui.heading_front": "前视",
+  "ui.heading_hole": "孔",
+  "ui.heading_home": "主页",
+  "ui.heading_insert": "插入",
+  "ui.heading_inspect": "检查",
+  "ui.heading_loft": "放样",
+  "ui.heading_make": "制作",
+  "ui.heading_measure": "测量",
+  "ui.heading_mesh": "网格",
+  "ui.heading_mirror": "镜像",
+  "ui.heading_modify": "修改",
+  "ui.heading_move": "移动",
+  "ui.heading_offset": "偏移",
+  "ui.heading_move_copy": "移动/复制",
+  "ui.heading_offset_plane": "偏移平面",
+  "ui.heading_ok": "确定",
+  "ui.heading_parameters": "参数",
+  "ui.heading_pattern_on_path": "路径阵列",
+  "ui.heading_pipe": "管道",
+  "ui.heading_plane_at_angle": "角度平面",
+  "ui.heading_plastic": "塑料",
+  "ui.heading_prepare": "准备",
+  "ui.heading_rectangular_pattern": "矩形阵列",
+  "ui.heading_revolve": "旋转",
+  "ui.heading_right": "右视",
+  "ui.heading_scale": "缩放",
+  "ui.heading_section_analysis": "截面分析",
+  "ui.heading_select": "选择",
+  "ui.heading_sheet_metal": "钣金",
+  "ui.heading_shell": "抽壳",
+  "ui.heading_sketch": "草图",
+  "ui.heading_sketch_palette": "草图面板",
+  "ui.heading_sketch_scale": "草图缩放",
+  "ui.heading_solid": "实体",
+  "ui.heading_sphere": "球体",
+  "ui.heading_split_body": "分割实体",
+  "ui.heading_surface": "曲面",
+  "ui.heading_sweep": "扫掠",
+  "ui.heading_thread": "螺纹",
+  "ui.heading_top": "上视",
+  "ui.heading_torus": "圆环体",
+  "ui.heading_utilities": "工具",
+  "ui.heading_utility": "实用工具",
+  "ui.help": "帮助",
+  "ui.hide": "隐藏",
+  "ui.hole": "孔",
+  "ui.hole_tap_type": "孔攻丝类型",
+  "ui.hole_type": "孔类型",
+  "ui.home": "主页",
+  "ui.horizontal_vertical": "水平/垂直",
+  "ui.import_ellipsis": "导入…",
+  "ui.insert": "插入",
+  "ui.inspect": "检查",
+  "ui.intersect": "相交",
+  "ui.join": "连接",
+  "ui.joints": "关节",
+  "ui.keyboard_shortcuts": "键盘快捷键",
+  "ui.language": "语言",
+  "ui.length_decimals": "长度小数位",
+  "ui.light": "浅色",
+  "ui.line": "直线",
+  "ui.linetype": "线型",
+  "ui.loft": "放样",
+  "ui.look_at": "朝向",
+  "ui.look_at_anim_desc": "轴视图、注视、主视图与适合窗口",
+  "ui.manufacture": "制造",
+  "ui.measure": "测量",
+  "ui.midpoint": "中点",
+  "ui.mirror": "镜像",
+  "ui.mirror_line": "镜像线",
+  "ui.modify": "修改",
+  "ui.move": "移动",
+  "ui.multiple": "多个",
+  "ui.named_views": "命名视图",
+  "ui.navigation": "导航",
+  "ui.needs_design": "{command}: 请先打开一个设计",
+  "ui.new_body": "新建实体",
+  "ui.new_design": "新建设计",
+  "ui.normal": "法向",
+  "ui.object_type": "对象类型",
+  "ui.objects": "对象",
+  "ui.offer_to_stand_up_y_up_files": "提供站立 Y-up 文件",
+  "ui.offset": "偏移",
+  "ui.offset_plane": "偏移平面",
+  "ui.one_side": "单侧",
+  "ui.open": "打开",
+  "ui.open_ellipsis": "打开...",
+  "ui.open_preferences": "打开首选项",
+  "ui.open_recent": "打开最近",
+  "ui.operation": "操作",
+  "ui.options": "选项",
+  "ui.orbit_around": "环绕",
+  "ui.origin": "原点",
+  "ui.palette_points": "点",
+  "ui.palette_profile": "轮廓",
+  "ui.pan_zoom_orbit": "平移、缩放、环绕",
+  "ui.parallel": "平行",
+  "ui.parameters": "参数",
+  "ui.paste": "粘贴",
+  "ui.path": "路径",
+  "ui.pattern_on_path": "路径阵列",
+  "ui.perpendicular": "垂直",
+  "ui.perspective_view": "透视图",
+  "ui.pipe": "管道",
+  "ui.placement": "放置",
+  "ui.plane": "平面",
+  "ui.plane_at_angle": "角度平面",
+  "ui.point": "点",
+  "ui.point_under_the_cursor": "光标下的点",
+  "ui.points": "点",
+  "ui.polygon": "多边形",
+  "ui.preferences": "首选项",
+  "ui.press_a_key": "按一个键…",
+  "ui.profile": "轮廓",
+  "ui.profile_plane": "轮廓平面",
+  "ui.profiles": "轮廓",
+  "ui.project": "投影",
+  "ui.project_face_edges_sketch": "将面的边投影到新草图",
+  "ui.quantity_2": "数量 2",
+  "ui.quantity": "数量",
+  "ui.quit": "退出",
+  "ui.radial_context_menu": "环形上下文菜单",
+  "ui.radius": "半径",
+  "ui.radius_type": "半径类型",
+  "ui.rectangle": "矩形",
+  "ui.rectangular_pattern": "矩形阵列",
+  "ui.redo": "重做",
+  "ui.render": "渲染",
+  "ui.renderer": "渲染器",
+  "ui.reset": "重置",
+  "ui.reset_all": "全部重置",
+  "ui.reset_the_settings_on_this_page": "重置此页面上的设置",
+  "ui.restore_defaults": "恢复默认值",
+  "ui.reverse_zoom_direction": "反转缩放方向",
+  "ui.revolve": "旋转",
+  "ui.right": "右视",
+  "ui.save": "保存",
+  "ui.save_as": "另存为",
+  "ui.save_as_ellipsis": "另存为...",
+  "ui.scale": "缩放",
+  "ui.section_analysis": "截面分析",
+  "ui.select": "选择",
+  "ui.select_other_hint": "“选择其他”：在模型上按住左键（或右键单击 › 选择其他…）列出光标下的所有对象；在同一位置再次单击可选择该处的下一个对象。",
+  "ui.selection": "选择",
+  "ui.shell": "抽壳",
+  "ui.show": "显示",
+  "ui.show_constraints": "约束",
+  "ui.show_dimensions": "尺寸",
+  "ui.show_points": "显示点",
+  "ui.show_profile": "显示轮廓",
+  "ui.show_projected_geometries": "投影几何",
+  "ui.simple": "简单",
+  "ui.simulation": "仿真",
+  "ui.single": "单个",
+  "ui.sketch": "草图",
+  "ui.sketch_dimension": "草图尺寸",
+  "ui.sketch_grid": "草图网格",
+  "ui.sketch_scale": "草图比例",
+  "ui.sketch_status": "草图状态",
+  "ui.sketches": "草图",
+  "ui.slice": "切片",
+  "ui.slot": "槽",
+  "ui.smooth": "平滑",
+  "ui.smooth_wheel_zoom": "平滑滚轮缩放",
+  "ui.smooth_wheel_zoom_tip": "关闭后每个滚轮事件立即生效，不做平滑延迟",
+  "ui.snap": "捕捉",
+  "ui.space_mouse_hint": "同时移动和旋转视图；草图中仅支持平移和缩放。",
+  "ui.space_mouse_navigate": "使用 SpaceNavigator / SpaceMouse 导航",
+  "ui.spacing_2": "间距 2",
+  "ui.spacing": "间距",
+  "ui.sphere": "球体",
+  "ui.spline": "样条曲线",
+  "ui.split_body": "分割实体",
+  "ui.stand_up_tip": "当 Z 朝上的 STEP 或 IGES 文件打开后，提示绕 X 轴旋转四分之一周",
+  "ui.start": "开始",
+  "ui.start_radius": "起始半径",
+  "ui.sweep": "扫掠",
+  "ui.symmetric": "对称",
+  "ui.symmetry": "对称",
+  "ui.system": "系统",
+  "ui.tangent": "相切",
+  "ui.taper_angle": "锥角",
+  "ui.tapped": "攻丝",
+  "ui.text": "文本",
+  "ui.theme": "主题",
+  "ui.thickness": "厚度",
+  "ui.thread": "螺纹",
+  "ui.timeline_bottom": "底部时间轴",
+  "ui.timeline_left_note": "左侧布局下，回退条显示在零件和场景浏览器的上方。",
+  "ui.timeline_left_sidebar": "左侧边栏",
+  "ui.tip_angle": "尖端角度",
+  "ui.to_object": "到对象",
+  "ui.top": "上视",
+  "ui.torus": "圆环体",
+  "ui.trackpad_pan_tip": "触控板手势用于平移（关闭：像滚轮一样缩放）；鼠标滚轮缩放、拇指滚轮横向平移、双指捏合始终缩放",
+  "ui.trim": "修剪",
+  "ui.two_finger_scroll_pans": "双指滚动平移",
+  "ui.two_sides": "双侧",
+  "ui.ui_scale": "界面缩放",
+  "ui.undo": "撤销",
+  "ui.units": "单位",
+  "ui.units_of_new_designs": "新设计的单位",
+  "ui.untitled": "无标题",
+  "ui.up_axis_note": "视图中朝上的轴（轴视图、主视图、注视）。设计本身不变。",
+  "ui.variable": "变量",
+  "ui.view_centre": "视图中心",
+  "ui.visual_shaded_hidden_edges": "带隐藏边的着色",
+  "ui.visual_shaded_with_edges": "带边着色",
+  "ui.visual_style": "视觉样式",
+  "ui.visual_wireframe": "线框",
+  "ui.workspace": "工作区",
+  "ui.y_distance": "Y 距离",
+  "ui.x_distance": "X 距离",
+  "ui.y_up": "Y 朝上",
+  "ui.z_up": "Z 朝上",
+  "ui.zoom_to_cursor_tip": "滚轮向光标所在点缩放（关闭：向视图中心缩放）",
+  "ui.zoom_to_the_cursor": "缩放到光标",
+  "A new configuration, a copy of the active one": "新建配置，为当前配置的副本",
+  "About SolidCraft": "关于 SolidCraft",
+  "Active": "活动",
+  "Active rule": "活动规则",
+  "Add": "添加",
+  "Add Key": "添加按键",
+  "Add Mid Radius": "添加中间半径",
+  "Add Row": "添加行",
+  "All Sketch Points": "所有草图点",
+  "All open designs": "所有打开的设计",
+  "Allowed expressions, separated by semicolons": "允许的表达式，以分号分隔",
+  "Also deletes": "同时删除",
+  "Angle 2": "角度 2",
+  "Animate": "动画",
+  "Appearance name": "外观名称",
+  "Applied Radius": "应用半径",
+  "Apply To": "应用于",
+  "Area": "面积",
+  "Attachment": "附着",
+  "BROWSER": "浏览器",
+  "Bend Line Position": "弯折线位置",
+  "Bend Position": "折弯位置",
+  "Bend Radius": "折弯半径",
+  "Bends": "折弯",
+  "Body": "实体",
+  "Bounding box": "边界框",
+  "CSV or JSON: updates existing parameters, adds new ones": "CSV 或 JSON：更新现有参数、添加新参数",
+  "Capture All Positions": "捕获所有位置",
+  "Catch Direction": "卡扣方向",
+  "Cells": "区域",
+  "Center X": "中心 X",
+  "Center Y": "中心 Y",
+  "Center of mass": "质心",
+  "Chamfer Type": "倒角类型",
+  "Check collisions": "检查碰撞",
+  "Checked": "已检查",
+  "Choose a new plane. Sketch geometry and dimensions stay unchanged in its two-dimensional coordinates.": "选择一个新平面。草图几何和尺寸在其二维坐标中保持不变。",
+  "Close draft": "关闭草稿",
+  "Collisions": "碰撞",
+  "Colour": "颜色",
+  "Component1": "组件1",
+  "Configuration": "配置",
+  "Configuration rules": "配置规则",
+  "Contact": "接触",
+  "Copy all licences": "复制所有许可证",
+  "Copy diagnostic information": "复制诊断信息",
+  "Copy report": "复制报告",
+  "Corner Relief Shape": "拐角释放形状",
+  "Counterbore depth": "沉孔深度",
+  "Countersink angle": "沉头角度",
+  "Create Issue — review draft": "创建 Issue——审阅草稿",
+  "Customize Toolbar": "自定义工具栏",
+  "Delete all": "全部删除",
+  "Delete rule": "删除规则",
+  "Delete the row": "删除此行",
+  "Delete the set": "删除此集合",
+  "Delete this parameter": "删除此参数",
+  "Density": "密度",
+  "Designs you open or save appear here.": "你打开或保存的设计会显示在此处。",
+  "Determined by To Object. Choose Angle to edit the angular extent.": "由“到对象”确定。选择“角度”可编辑角度范围。",
+  "Discard": "放弃",
+  "Double-click to rename": "双击重命名",
+  "Drive Joint": "驱动接头",
+  "Edit Profile Sketch": "编辑轮廓草图",
+  "Enable rule": "启用规则",
+  "Enabled": "已启用",
+  "Explode": "爆炸",
+  "Extents": "范围",
+  "Face attachment lost": "面附着丢失",
+  "Faces / edges / vertices": "面 / 边 / 顶点",
+  "Favourite": "收藏",
+  "Files from many CAD programs have Y up, so they open lying on their back here (Z up).": "许多 CAD 程序的文件以 Y 为上轴，因此在此处打开时会平躺（Z 朝上）。",
+  "Filter": "筛选",
+  "Find in Browser": "在浏览器中查找",
+  "Flat size": "平板尺寸",
+  "Follow camera (Look At sketches)": "跟随相机（注视草图）",
+  "Font": "字体",
+  "Full Length": "全长",
+  "Gap": "间隙",
+  "Grid": "网格",
+  "Height": "高度",
+  "Home view": "主视图",
+  "In This Design": "在此设计中",
+  "Interferes": "发生干涉",
+  "Issue title": "Issue 标题",
+  "Joint Origin1": "接头原点1",
+  "Keep Tools": "保留工具",
+  "Later": "稍后",
+  "Leave it": "保持原样",
+  "Legacy face attachment. Rebinding to a certified face creates an exact attachment.": "旧版面附着。重新绑定到经验证的面可创建精确附着。",
+  "Length": "长度",
+  "Length units": "长度单位",
+  "Library": "零件库",
+  "Loop": "循环",
+  "Margin": "余量",
+  "Mass": "质量",
+  "Material": "材质",
+  "Mid Radius": "中间半径",
+  "Modeled": "已建模",
+  "More toolbar panels": "更多工具栏面板",
+  "Motion": "运动",
+  "Move Type": "移动类型",
+  "Move earlier": "向前移动",
+  "Move later": "向后移动",
+  "Name": "名称",
+  "No crash reports.": "没有崩溃报告。",
+  "No matching appearances": "没有匹配的外观",
+  "Not available yet": "暂不可用",
+  "Opacity": "不透明度",
+  "Open GitHub draft": "打开 GitHub 草稿",
+  "Open-source parametric 3D CAD in Rust. Licensed MIT OR Apache-2.0.": "使用 Rust 编写的开源参数化 3D CAD。基于 MIT OR Apache-2.0 许可。",
+  "Other side": "另一侧",
+  "Parameter values": "参数值",
+  "Per Edge": "每条边",
+  "Pick the tool bodies": "选择工具实体",
+  "Place at the origin instead": "改为放置在原点",
+  "Playback": "播放",
+  "Position": "位置",
+  "Position (0 to 1)": "位置（0 到 1）",
+  "Position along the edge, 0 at the start end, 1 at the other": "沿边的位置，起点端为 0，另一端为 1",
+  "Preview leaves the current design unchanged.": "预览不会更改当前设计。",
+  "RECENT": "最近使用",
+  "Radius Fit": "半径拟合",
+  "Ratio": "比率",
+  "Recover": "恢复",
+  "Recover unsaved design?": "恢复未保存的设计？",
+  "Remove Tools": "移除工具",
+  "Remove from list": "从列表移除",
+  "Remove private design details or paths before sharing.": "共享前请移除私密设计细节或路径。",
+  "Remove the column": "移除此列",
+  "Remove the track": "移除轨迹",
+  "Remove this point": "移除此点",
+  "Report a bug — review a screenshot and open a GitHub draft": "报告缺陷 — 复核截图并开启 GitHub 草稿",
+  "Reset Toolbar": "重置工具栏",
+  "Restore the inherited component or physical material appearance": "还原继承的组件或物理材质外观",
+  "Result": "结果",
+  "Retake screenshot": "重新截图",
+  "Reverse": "反向",
+  "Reverse Direction": "反向",
+  "Revert": "还原",
+  "Revert All Positions": "还原所有位置",
+  "Review the report and screenshot before opening GitHub.": "打开 GitHub 前请审阅报告和截图。",
+  "Rim Edge": "轮缘边",
+  "Roll History Marker Here": "将历史标记滚动到此处",
+  "Rule": "规则",
+  "Saved preview. Geometry is being checked before editing.": "已保存预览。编辑前正在检查几何。",
+  "Scale factor": "比例因子",
+  "Search": "搜索",
+  "Search commands": "搜索命令",
+  "Select bodies (a face picks its body)": "选择实体（单击面即选择其所属实体）",
+  "Select bodies or faces instead": "改为选择实体或面",
+  "Selection filter": "选择筛选",
+  "Semantic faces share their appearance across instances.": "语义面在各实例间共享外观。",
+  "Shape": "形状",
+  "Show Agent Cursor": "显示代理光标",
+  "Show in folder": "在文件夹中显示",
+  "Size": "大小",
+  "Sketch plane has no body-face attachment.": "草图平面没有实体面附着。",
+  "SolidCraft closed before these designs were saved. Their last autosave can be opened.": "SolidCraft 在这些设计保存前已关闭。可以打开它们的上次自动保存。",
+  "Speed": "速度",
+  "Stand it up": "将其立起",
+  "Stand it up: a quarter turn about X, as one Move feature you can undo.": "将其立起：绕 X 轴旋转四分之一周，作为一个可撤销的移动特征。",
+  "Stand this part up?": "立起此零件？",
+  "Step": "步骤",
+  "Steps": "步数",
+  "Suppressed": "已抑制",
+  "Swap Ends": "交换端点",
+  "Tangent Chain": "相切链",
+  "The dashed sketch is a saved plane guide. Select a new face to repair the attachment.": "虚线草图是已保存的平面引导。选择一个新面以修复附着。",
+  "The saved author occurrence is missing. Select a valid author placement before rebinding.": "保存的作者实例缺失。重新绑定前请选择有效的作者放置。",
+  "Then": "操作",
+  "These features will be deleted:": "以下特征将被删除：",
+  "These features will fail:": "以下特征将失败：",
+  "This child is shared. Deleting it removes it from every copy of its parent.": "此子项是共享的。删除它会从其父项的每个副本中移除。",
+  "This child is shared. Position changes apply to every copy of its parent.": "此子项是共享的。位置更改会应用到其父项的每个副本。",
+  "This face cannot provide a durable attachment. Choose another face or explicitly use a fixed plane.": "此面无法提供持久附着。请选择其他面或显式使用固定平面。",
+  "To Offset": "偏移",
+  "Tolerance": "公差",
+  "Type": "类型",
+  "Updating the preview": "正在更新预览",
+  "Use fixed plane": "使用固定平面",
+  "VIEW": "视图",
+  "Value": "值",
+  "Volume": "体积",
+  "Wall": "壁厚",
+  "When": "条件",
+  "Width": "宽度",
+  "Will fail": "将失败",
+  "angle, height": "角度、高度",
+  "command name": "命令名称",
+  "expression, e.g. 25 mm": "表达式，例如 25 mm",
+  "fits the face, e.g. M8": "适配该面，例如 M8",
+  "from the rule": "来自规则",
+  "needs two joints": "需要两个接头",
+  "new configuration": "新配置",
+  "new name": "新名称",
+  "new parameter": "新参数",
+  "no interference": "无干涉",
+  "no joint that moves yet": "尚无运动接头",
+  "no picture": "无图片",
+  "pick a hole to seat it, or OK places it at the origin": "选择一个孔放置，或单击确定放置在原点",
+  "pick one or two vertices, edges or faces": "选择一个或两个顶点、边或面",
+  "the parts library is not available": "零件库不可用",
+  "to the next face": "到下一个面",
+  "Revert Position": "恢复位置",
+  "Construction": "构造",
+  "Faces": "面",
+  "Edges": "边",
+  "Vertices": "顶点",
+  "Sketch geometry and profiles": "草图几何和轮廓",
+  "Sketch curves": "草图曲线",
+  "Sketch points": "草图点",
+  "Sketch dimensions": "草图尺寸",
+  "Sketch constraints": "草图约束",
+  "0 turns it off": "0 表示关闭",
+  "Show the pointer an AI agent moves (#35)": "显示 AI 代理移动的指针（#35）",
+  "Follow the camera (Look At sketches)": "跟随相机（注视草图）",
+  "Flat": "平面",
+  "Save Rule": "保存规则",
+  "Preview Row": "预览行",
+  "Add condition": "添加条件",
+  "Apply to selection": "应用到选择",
+  "Remove override": "移除覆盖",
+  "Copy screenshot": "复制截图",
+  "Remove screenshot": "移除截图",
+  "Use active author placement": "使用活动作者放置",
+  "Reattach selected face": "重新附着所选面",
+  "Use saved fixed plane": "使用已保存的固定平面",
+  "Use selected face as fixed plane": "使用所选面作为固定平面",
+  "View navigator": "视图导航器",
+  "Signed axes": "带符号轴",
+  "Cube": "立方体",
+  "Middle double-click": "中键双击",
+  "Double-clicking the middle button in the view: Home (the home view, framing what is shown), Fit (frame what is shown, keeping the orientation) or nothing": "在视图中双击中键：主视图（主视图，框住所显示的内容）、适合窗口（框住所显示的内容，保持方向）或无动作",
+  "Select Other: hold the left button still on the model (or right-click › Select Other…) to list everything under the cursor; click again on the same spot to select the next thing there. Double-click the middle button to go Home (Preferences › Navigation).": "“选择其他”：在模型上按住左键（或右键单击 › 选择其他…）列出光标下的所有对象；在同一位置再次单击可选择该处的下一个对象。双击中键转到主视图（首选项 › 导航）。",
+  "cmd.render_backends": "渲染后端",
+  "cmd.view_navigate": "导航视图",
+  "ui.animateJoint": "动画接头",
+  "ui.calibrate": "校准",
+  "ui.customizeToolbar": "自定义工具栏…",
+  "ui.editJointLimits": "编辑接头限制",
+  "ui.exportDxf": "导出 DXF…",
+  "ui.findInTimeline": "在时间线中查找",
+  "ui.findInWindow": "在窗口中查找",
+  "ui.fit": "适合",
+  "ui.groupSelected": "将所选编组",
+  "ui.hideAxes": "隐藏轴",
+  "ui.hideDimension": "隐藏尺寸",
+  "ui.hideOrigin": "隐藏原点",
+  "ui.hidePlanes": "隐藏平面",
+  "ui.hideProfile": "隐藏轮廓",
+  "ui.homeView": "主视图",
+  "ui.isolate": "隔离",
+  "ui.lock": "锁定",
+  "ui.newSketchGroup": "新建草图组",
+  "ui.normalConstruction": "普通 / 构造",
+  "ui.orbit": "环绕",
+  "ui.heading_position": "位置",
+  "ui.pan": "平移",
+  "ui.pinToShortcuts": "固定到快捷方式",
+  "ui.pinToToolbar": "固定到工具栏",
+  "ui.properties": "属性",
+  "ui.removeSection": "移除剖面",
+  "ui.removeFromToolbar": "从工具栏移除",
+  "ui.repeat": "重复",
+  "ui.report_a_bug": "报告缺陷",
+  "ui.restore": "还原",
+  "ui.heading_setup": "设置",
+  "ui.selectOther": "选择其他…",
+  "ui.selectTangentChain": "选择相切链",
+  "ui.showAll": "显示全部",
+  "ui.showAllBodies": "显示所有实体",
+  "ui.showAxes": "显示轴",
+  "ui.showDimension": "显示尺寸",
+  "ui.showOrigin": "显示原点",
+  "ui.showPlanes": "显示平面",
+  "ui.suppress": "抑制",
+  "ui.command_palette_hint": "输入命令，例如 {example}  — 或按 S 搜索",
+  "ui.unground": "取消固定",
+  "ui.unisolate": "取消隔离",
+  "ui.unlock": "解锁",
+  "ui.unsuppress": "取消抑制",
+  "ui.updateToCurrentView": "更新为当前视图",
+  "ui.zoom": "缩放",
+  "ui.command_done": "{command} 完成",
+  "timeline.group": "新建特征文件夹",
+  "timeline.ungroup": "移除特征文件夹",
+  "timeline.rename_group": "重命名特征文件夹",
+  "timeline.move_to_group": "将特征移至文件夹",
+  "timeline.move_many": "移动时间线项目",
+  "timeline.reorder_many": "特征重新排序",
+  "ui.show_construction_geometries": "构造几何图元",
+  "ui.total_angle": "总角度",
+  "sketch_text.builtin_font": "{family}（内置）",
+  "sketch_text.font_search": "搜索字体",
+  "sketch_text.loading_fonts": "正在查找已安装字体…",
+  "sketch_text.use_font_file": "使用字体文件 {path}",
+  "sketch_text.bold": "粗体",
+  "sketch_text.italic": "斜体",
+  "sketch_text.align_left": "左对齐",
+  "sketch_text.align_center": "居中",
+  "sketch_text.align_right": "右对齐",
+  "sketch_text.path_hint": "文字所跟随的草图曲线：先单击此处，再选择曲线",
+  "sketch_text.path_clear": "将文字移离其曲线",
+  "Style": "样式",
+  "Alignment": "对齐",
+  "Letter Spacing": "字间距",
+  "Line Spacing": "行间距",
+  "Path": "路径",
+  "sketch_text.on_path": "文字沿路径排列：由曲线放置",
+  "ui.analysis": "分析",
+  "ui.edit_section_analysis": "编辑截面分析",
+  "cmd.material_properties_validate":"验证物理材料数据"
+}
@@ -0,0 +1,40 @@
+//! Built-in physical materials: densities in g/cm³ and sRGB colours.
+pub const DEFAULT_DENSITY: f64 = 1.29;
+
+/// Physical materials: name and density (g/cm³).
+pub const MATERIALS: [(&str, f64); 14] = [
+    ("Default", DEFAULT_DENSITY),
+    ("Steel", 7.85),
+    ("Stainless Steel", 8.0),
+    ("Aluminum", 2.70),
+    ("Brass", 8.50),
+    ("Copper", 8.96),
+    ("Titanium", 4.43),
+    ("Cast Iron", 7.20),
+    ("ABS Plastic", 1.06),
+    ("PLA", 1.24),
+    ("Nylon", 1.14),
+    ("Polycarbonate", 1.20),
+    ("Oak", 0.75),
+    ("Glass", 2.50),
+];
+
+/// How a physical material looks (sRGB); the default material has no colour of its own.
+pub fn material_color(name: &str) -> Option<[u8; 3]> {
+    Some(match name {
+        "Steel" => [158, 164, 172],
+        "Stainless Steel" => [186, 191, 198],
+        "Aluminum" => [204, 208, 214],
+        "Brass" => [208, 172, 88],
+        "Copper" => [204, 122, 80],
+        "Titanium" => [150, 148, 158],
+        "Cast Iron" => [104, 104, 110],
+        "ABS Plastic" => [222, 222, 216],
+        "PLA" => [110, 160, 222],
+        "Nylon" => [236, 230, 214],
+        "Polycarbonate" => [196, 216, 232],
+        "Oak" => [190, 146, 92],
+        "Glass" => [170, 208, 218],
+        _ => return None,
+    })
+}
@@ -0,0 +1,316 @@
+
+struct U {
+    vp: mat4x4<f32>,
+    back: vec4<f32>,   // xyz = toward the eye, w = 1 for linear output
+    screen: vec4<f32>, // viewport width, height (px), depth bias (see `biased_z`), silhouettes on (1)
+    clip: vec4<f32>,   // section plane: normal, d (zero normal: no section)
+    cap: vec4<f32>,    // colour of the inside of cut bodies
+    ana: vec4<f32>,    // surface analysis: mode (1 zebra, 2 draft, 3 curvature), parameter
+    pull: vec4<f32>,   // draft pull direction
+    acc_u: vec4<f32>,  // accessibility map axes (xyz, offset)
+    acc_v: vec4<f32>,
+    eye: vec4<f32>,    // eye position, w = 1 for perspective (0: orthographic, looking along -back)
+};
+
+@group(1) @binding(2) var acc_t: texture_2d<f32>;
+
+fn clipped(p: vec3<f32>) -> bool {
+    return length(u.clip.xyz) > 0.5 && dot(u.clip.xyz, p) > u.clip.w;
+}
+@group(0) @binding(0) var<uniform> u: U;
+
+fn to_linear(c: vec3<f32>) -> vec3<f32> {
+    return select(c, pow((c + vec3<f32>(0.055)) / vec3<f32>(1.055), vec3<f32>(2.4)), c > vec3<f32>(0.04045));
+}
+
+fn out_color(c: vec4<f32>) -> vec4<f32> {
+    if (u.back.w > 0.5) {
+        return vec4<f32>(to_linear(c.rgb), c.a);
+    }
+    return c;
+}
+
+struct TOut {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) n: vec3<f32>,
+    @location(1) c: vec4<f32>,
+    @location(2) wp: vec3<f32>,
+};
+
+@vertex
+fn vs_tri(@location(0) p: vec3<f32>, @location(1) n: vec3<f32>, @location(2) c: vec4<f32>) -> TOut {
+    var o: TOut;
+    o.pos = u.vp * vec4<f32>(p, 1.0);
+    o.n = n;
+    o.c = c;
+    o.wp = p;
+    return o;
+}
+
+/// Opaque model surfaces: cut by the section plane, the inside shows as a flat cap colour.
+@fragment
+fn fs_solid(i: TOut, @builtin(front_facing) front: bool) -> @location(0) vec4<f32> {
+    let c = solid(i, front);
+    return c;
+}
+
+struct CutOut {
+    @location(0) c: vec4<f32>,
+    @builtin(frag_depth) depth: f32,
+};
+
+/// The section cap (the inside seen through the cut, drawn on the far walls' back faces where
+/// they are the visible surface) again, at the depth of the section plane rather than of the
+/// far wall, so the cut face hides what lies inside the body instead of showing it like a
+/// pane of glass.
+@fragment
+fn fs_solid_cut(i: TOut, @builtin(front_facing) front: bool) -> CutOut {
+    var o: CutOut;
+    o.c = solid(i, front);
+    o.depth = cap_depth(i.wp, i.pos.z);
+    return o;
+}
+
+/// Depth of the section plane on the view ray through `wp` (a far wall seen through the cut),
+/// never behind the wall itself (`z`).
+fn cap_depth(wp: vec3<f32>, z: f32) -> f32 {
+    var dir = -u.back.xyz;
+    if (u.eye.w > 0.5) { dir = wp - u.eye.xyz; }
+    let dn = dot(u.clip.xyz, dir);
+    if (abs(dn) < 1e-9) { return z; }
+    let p = wp + dir * ((u.clip.w - dot(u.clip.xyz, wp)) / dn);
+    let c = u.vp * vec4<f32>(p, 1.0);
+    if (c.w <= 0.0) { return z; }
+    return clamp(c.z / c.w, 0.0, z);
+}
+
+fn solid(i: TOut, front: bool) -> vec4<f32> {
+    // Derivatives first, in uniform control flow (browsers' WGSL compilers reject them after
+    // a branch that returns; the whole shader module then fails and nothing is drawn).
+    let k = curvature(i);
+    let ndv = dot(normalize(i.n), normalize(u.back.xyz));
+    let fw = fwidth(ndv);
+    if (clipped(i.wp)) { discard; }
+    if (!front && length(u.clip.xyz) > 0.5) {
+        // The cut face in its body's colour (as Fusion's "from component"), tinted toward the
+        // cap colour so it reads as a cut, hatched at 45 degrees on screen.
+        let base = mix(i.c.rgb, u.cap.rgb, 0.35);
+        let h = fract((i.pos.x + i.pos.y) / 9.0);
+        return out_color(vec4<f32>(select(base, base * 0.6, h < 0.22), 1.0));
+    }
+    if (u.ana.x > 0.5 && length(i.n) > 0.5) {
+        return analysis(i, k);
+    }
+    let c = shade(i);
+    // Silhouettes (styles with edges): where a curved surface turns away from the eye, a line
+    // about 1.5 px wide, on the visible surface only (depth-correct).
+    if (u.screen.w > 0.5 && length(i.n) > 0.5 && fw > 1e-6) {
+        let a = 1.0 - smoothstep(fw * 0.8, fw * 2.0, abs(ndv));
+        return vec4<f32>(mix(c.rgb, out_color(vec4<f32>(0.07, 0.08, 0.10, 1.0)).rgb, a), c.a);
+    }
+    return c;
+}
+
+/// How fast the normal turns across the pixel (per mm).
+fn curvature(i: TOut) -> f32 {
+    let nn = normalize(i.n);
+    let kx = length(dpdx(nn)) / max(length(dpdx(i.wp)), 1e-6);
+    let ky = length(dpdy(nn)) / max(length(dpdy(i.wp)), 1e-6);
+    return max(kx, ky);
+}
+
+/// Surface analysis colours: zebra stripes, draft angle bands, curvature map (`k`: the
+/// surface's curvature here, worked out by the caller).
+fn analysis(i: TOut, k: f32) -> vec4<f32> {
+    let v = normalize(u.back.xyz);
+    var n = normalize(i.n);
+    if (dot(n, v) < 0.0) { n = -n; }
+    let lit = 0.55 + 0.45 * max(dot(n, v), 0.0);
+    if (u.ana.x < 1.5) {
+        // Reflections of upright light bars standing around the viewer: the stripe follows
+        // the reflected ray's sideways direction (horizontal on screen).
+        let r = reflect(-v, n);
+        var side = cross(v, vec3<f32>(0.0, 0.0, 1.0));
+        if (length(side) < 1e-3) { side = vec3<f32>(1.0, 0.0, 0.0); }
+        let s = sin(dot(r, normalize(side)) * u.ana.y * 3.14159265);
+        let c = select(0.08, 0.95, s > 0.0);
+        return out_color(vec4<f32>(vec3<f32>(c), 1.0));
+    }
+    if (u.ana.x > 4.5) {
+        // Reachable from the access direction: facing it and nothing above.
+        let d = normalize(u.pull.xyz);
+        let size = i32(u.ana.w);
+        let px = vec2<i32>(floor(vec2<f32>(dot(i.wp, u.acc_u.xyz) + u.acc_u.w, dot(i.wp, u.acc_v.xyz) + u.acc_v.w) * u.ana.z));
+        var top = -1e30;
+        if (px.x >= 0 && px.y >= 0 && px.x < size && px.y < size) {
+            top = textureLoad(acc_t, px, 0).x;
+        }
+        let cn = dot(normalize(i.n), d);
+        let facing = cn > 0.02;
+        // Slack of a pixel and a half, more on slopes (the map holds the pixel's highest point).
+        let slack = u.ana.y * (1.0 + sqrt(max(1.0 - cn * cn, 0.0)) / max(cn, 0.05));
+        let clear = dot(i.wp, d) >= top - slack;
+        var c = vec3<f32>(0.85, 0.22, 0.20);
+        if (facing && clear) { c = vec3<f32>(0.20, 0.75, 0.30); }
+        return out_color(vec4<f32>(c * lit, 1.0));
+    }
+    if (u.ana.x > 3.5) {
+        // A studio around the model: sky above, a dark floor below, a bright horizon band and
+        // two soft light panels, seen in a mirror.
+        let r = reflect(-v, n);
+        var c = mix(vec3<f32>(0.32, 0.34, 0.38), vec3<f32>(0.80, 0.86, 0.95), smoothstep(-0.05, 0.6, r.z));
+        c = c + vec3<f32>(0.6) * exp(-abs(r.z) * 40.0);
+        let side = atan2(r.y, r.x);
+        c = c + vec3<f32>(0.9) * smoothstep(0.92, 0.98, cos(side * 2.0)) * smoothstep(0.1, 0.3, r.z) * smoothstep(0.8, 0.6, r.z);
+        if (r.z < -0.02) {
+            // The floor: lighter toward the horizon, with light-panel streaks along it.
+            c = mix(vec3<f32>(0.55, 0.56, 0.60), vec3<f32>(0.20, 0.20, 0.22), clamp(-r.z * 1.6, 0.0, 1.0));
+            c = c + vec3<f32>(0.35) * smoothstep(0.95, 0.99, cos(side * 3.0));
+        }
+        return out_color(vec4<f32>(min(c, vec3<f32>(1.0)), 1.0));
+    }
+    if (u.ana.x < 2.5) {
+        let a = degrees(asin(clamp(dot(normalize(i.n), normalize(u.pull.xyz)), -1.0, 1.0)));
+        var c = vec3<f32>(0.95, 0.80, 0.15);
+        if (a >= u.ana.y) { c = vec3<f32>(0.20, 0.75, 0.30); }
+        if (a <= -u.ana.y) { c = vec3<f32>(0.85, 0.22, 0.20); }
+        return out_color(vec4<f32>(c * lit, 1.0));
+    }
+    // Curvature from how fast the normal turns across the pixel.
+    let t = clamp(k * u.ana.y, 0.0, 1.0);
+    let c = select(mix(vec3<f32>(0.10, 0.80, 0.25), vec3<f32>(0.90, 0.15, 0.10), t * 2.0 - 1.0),
+                   mix(vec3<f32>(0.15, 0.35, 0.95), vec3<f32>(0.10, 0.80, 0.25), t * 2.0), t < 0.5);
+    return out_color(vec4<f32>(c * lit, 1.0));
+}
+
+@fragment
+fn fs_tri(i: TOut) -> @location(0) vec4<f32> {
+    if (clipped(i.wp)) { discard; }
+    return shade(i);
+}
+
+fn shade(i: TOut) -> vec4<f32> {
+    // A zero normal marks flat colour (selection fills, translucent planes).
+    if (length(i.n) < 0.5) {
+        return out_color(i.c);
+    }
+    let v = normalize(u.back.xyz);
+    var n = normalize(i.n);
+    if (dot(n, v) < 0.0) { n = -n; }
+    let key = normalize(v * 0.8 + vec3<f32>(-0.3, 0.2, 0.6));
+    let diff = max(dot(n, key), 0.0);
+    let fill = max(dot(n, v), 0.0);
+    let h = normalize(key + v);
+    let spec = pow(max(dot(n, h), 0.0), 40.0) * 0.25;
+    let k = 0.42 + 0.38 * diff + 0.25 * fill;
+    return out_color(vec4<f32>(min(i.c.rgb * k + vec3<f32>(spec), vec3<f32>(1.0)), i.c.a));
+}
+
+/// Clip-space z of `p` (clipped to `c`) pulled `s` depth biases toward the eye (pushed away
+/// when negative). Orthographic depth is linear in distance, so the bias is a fixed step of it.
+/// Perspective depth is not: near the far plane a fixed step spans tens of millimetres (edges
+/// showed through walls), so the point moves toward the eye by a fraction of its distance.
+fn biased_z(p: vec3<f32>, c: vec4<f32>, s: f32) -> f32 {
+    if (u.eye.w > 0.5) {
+        let q = u.vp * vec4<f32>(mix(p, u.eye.xyz, u.screen.z * 8.0 * s), 1.0);
+        return q.z / max(q.w, 1e-6) * c.w;
+    }
+    return c.z - u.screen.z * s * c.w;
+}
+
+@vertex
+fn vs_ghost(@location(0) p: vec3<f32>, @location(1) n: vec3<f32>, @location(2) c: vec4<f32>) -> TOut {
+    var o: TOut;
+    o.pos = u.vp * vec4<f32>(p, 1.0);
+    o.pos.z = biased_z(p, o.pos, -4.0);
+    o.n = n;
+    o.c = c;
+    o.wp = p;
+    return o;
+}
+
+struct LOut {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) c: vec4<f32>,
+    @location(1) wp: vec3<f32>,
+};
+
+@vertex
+fn vs_line(@builtin(vertex_index) vi: u32, @location(0) a: vec3<f32>, @location(1) b: vec3<f32>, @location(2) c: vec4<f32>, @location(3) w: f32) -> LOut {
+    var pa = a;
+    var pb = b;
+    var ca = u.vp * vec4<f32>(a, 1.0);
+    var cb = u.vp * vec4<f32>(b, 1.0);
+    // An end behind the near plane (clip z < 0) has no screen point: its divide flips the
+    // line or drops it whole (ground grid lines running past the eye at a low angle). Cut
+    // the segment at the plane instead; clip space is linear in the world point.
+    if (ca.z < 0.0 && cb.z > 0.0) {
+        let k = ca.z / (ca.z - cb.z);
+        ca = mix(ca, cb, k);
+        pa = mix(a, b, k);
+    } else if (cb.z < 0.0 && ca.z > 0.0) {
+        let k = cb.z / (cb.z - ca.z);
+        cb = mix(cb, ca, k);
+        pb = mix(b, a, k);
+    }
+    let half = u.screen.xy * 0.5;
+    let sa = ca.xy / max(ca.w, 1e-6) * half;
+    let sb = cb.xy / max(cb.w, 1e-6) * half;
+    var dir = sb - sa;
+    let len = length(dir);
+    if (len < 1e-6) { dir = vec2<f32>(1.0, 0.0); } else { dir = dir / len; }
+    let nrm = vec2<f32>(-dir.y, dir.x);
+    // Two triangles: corners (t, side).
+    var ts = array<f32, 6>(0.0, 1.0, 1.0, 0.0, 1.0, 0.0);
+    var ss = array<f32, 6>(-1.0, -1.0, 1.0, -1.0, 1.0, 1.0);
+    let t = ts[vi];
+    let s = ss[vi];
+    let base = select(ca, cb, t > 0.5);
+    let off = nrm * s * w * 0.5 + dir * (t * 2.0 - 1.0) * w * 0.5;
+    var o: LOut;
+    o.pos = vec4<f32>(base.xy + off / half * base.w, biased_z(select(pa, pb, t > 0.5), base, 1.0), base.w);
+    o.c = c;
+    o.wp = select(pa, pb, t > 0.5);
+    return o;
+}
+
+@fragment
+fn fs_line(i: LOut) -> @location(0) vec4<f32> {
+    if (clipped(i.wp)) { discard; }
+    return out_color(i.c);
+}
+
+struct IOut {
+    @builtin(position) pos: vec4<f32>,
+    @location(0) uv: vec2<f32>,
+    @location(1) a: f32,
+    @location(2) wp: vec3<f32>,
+};
+
+@group(1) @binding(0) var img_t: texture_2d<f32>;
+@group(1) @binding(1) var img_s: sampler;
+
+@vertex
+fn vs_img(@location(0) p: vec3<f32>, @location(1) uv: vec2<f32>, @location(2) a: f32) -> IOut {
+    var o: IOut;
+    o.pos = u.vp * vec4<f32>(p, 1.0);
+    // Pulled toward the eye like lines, so a decal on a face is not lost in it.
+    o.pos.z = biased_z(p, o.pos, 1.0);
+    o.uv = uv;
+    o.a = a;
+    o.wp = p;
+    return o;
+}
+
+@fragment
+fn fs_img(i: IOut) -> @location(0) vec4<f32> {
+    let c = textureSample(img_t, img_s, i.uv);
+    if (clipped(i.wp)) { discard; }
+    return out_color(vec4<f32>(c.rgb, c.a * i.a));
+}
+
+/// Lines the section never cuts (the grid, highlights drawn on top).
+@fragment
+fn fs_line_all(i: LOut) -> @location(0) vec4<f32> {
+    return out_color(i.c);
+}
@@ -0,0 +1,138 @@
+//! Original light and dark palette values. Compiled by the UI theme boundary.
+use crate::theme::Tokens;
+use egui::Color32;
+impl Tokens {
+    pub const fn light() -> Tokens {
+        Tokens {
+            app_bar: Color32::from_rgb(52, 56, 64),
+            toolbar: Color32::from_rgb(246, 247, 249),
+            panel: Color32::from_rgb(250, 251, 252),
+            panel_header: Color32::from_rgb(236, 238, 242),
+            border: Color32::from_rgb(208, 212, 220),
+            text: Color32::from_rgb(38, 42, 50),
+            text_dim: Color32::from_rgb(110, 116, 128),
+            accent: Color32::from_rgb(38, 120, 218),
+            accent_soft: Color32::from_rgb(214, 230, 250),
+            sketch_accent: Color32::from_rgb(46, 150, 90),
+            error: Color32::from_rgb(214, 54, 54),
+            warning: Color32::from_rgb(222, 150, 30),
+            icon: Color32::from_rgb(70, 78, 92),
+            icon_fill: Color32::from_rgb(178, 196, 222),
+            timeline: Color32::from_rgb(232, 235, 240),
+            hover: Color32::from_rgb(226, 234, 246),
+            sel_face: Color32::from_rgb(76, 127, 203),
+            sel_edge: Color32::from_rgb(0, 127, 255),
+            sel_edge_rim: Color32::from_rgb(127, 191, 255),
+            hover_edge: Color32::from_rgb(0, 0, 0),
+            hover_edge_halo: Color32::from_rgb(203, 203, 203),
+            hover_face_lift: 40,
+            sel_profile: Color32::from_rgb(26, 84, 167),
+            sel_profile_edge: Color32::from_rgb(47, 109, 198),
+            hover_profile: Color32::from_rgba_unmultiplied_const(75, 129, 253, 48),
+            hover_profile_edge: Color32::from_rgb(75, 129, 253),
+            sel_vertex: Color32::from_rgb(70, 110, 170),
+            origin_plane: Color32::from_rgba_unmultiplied_const(249, 184, 134, 94),
+            origin_plane_edge: Color32::from_rgba_unmultiplied_const(214, 140, 84, 200),
+            origin_plane_hover: Color32::from_rgba_unmultiplied_const(120, 130, 230, 150),
+            origin_point: Color32::from_rgb(214, 215, 218),
+            axis_x: Color32::from_rgb(255, 0, 0),
+            axis_y: Color32::from_rgb(0, 255, 0),
+            axis_z: Color32::from_rgb(2, 2, 248),
+            construction_plane: Color32::from_rgba_unmultiplied_const(249, 184, 134, 70),
+            construction_geom: Color32::from_rgb(232, 140, 48),
+            body: Color32::from_rgb(176, 186, 198),
+            body_edge: Color32::from_rgb(40, 44, 52),
+            manipulator: Color32::from_rgb(40, 110, 220),
+            preview_add: Color32::from_rgb(112, 160, 226),
+            preview_sketch: Color32::from_rgb(32, 190, 96),
+            preview_cut: Color32::from_rgba_unmultiplied_const(232, 84, 44, 110),
+            cube_face: Color32::from_rgb(236, 239, 244),
+            cube_border: Color32::from_rgb(85, 94, 110),
+            cube_text: Color32::from_rgb(38, 42, 50),
+            cube_hover: Color32::from_rgb(190, 220, 252),
+            viewport_top: Color32::from_rgb(240, 243, 247),
+            viewport_bottom: Color32::from_rgb(203, 210, 221),
+            grid: Color32::from_rgb(196, 202, 212),
+            grid_major: Color32::from_rgb(170, 178, 190),
+            body_selected: Color32::from_rgb(110, 170, 235),
+            sketch: Color32::from_rgb(30, 90, 200),
+            sketch_fixed: Color32::from_rgb(20, 20, 20),
+            sketch_point: Color32::BLACK,
+            sketch_locked: Color32::from_rgb(0, 140, 60),
+            dimension: Color32::from_rgb(36, 40, 48),
+            dimension_driven: Color32::from_rgb(120, 126, 138),
+            sketch_point_free: Color32::from_rgb(30, 90, 200),
+            section_cap: Color32::from_rgb(214, 128, 72),
+            dialog_bg: Color32::from_rgb(250, 251, 252),
+            dialog_border: Color32::from_rgb(208, 212, 220),
+            chip: Color32::from_rgb(38, 120, 218),
+            heading_bg: Color32::from_rgb(218, 223, 231),
+            subheading_bg: Color32::from_rgb(234, 237, 242),
+            profile_fill: Color32::from_rgba_unmultiplied_const(255, 196, 120, 70),
+            glyph_bg: Color32::WHITE,
+            glyph_edge: Color32::from_rgb(190, 110, 100),
+            glyph_text: Color32::from_rgb(150, 40, 35),
+            overlay: Color32::from_rgba_unmultiplied_const(255, 255, 255, 235),
+            rubber_band: Color32::from_rgb(30, 120, 230),
+            app_bar_text: Color32::from_rgb(230, 234, 242),
+            timeline_item: Color32::WHITE,
+            timeline_item_error: Color32::from_rgb(250, 220, 220),
+            timeline_marker: Color32::from_rgb(70, 76, 88),
+            field: Color32::WHITE,
+            box_window: Color32::from_rgb(38, 120, 218),
+            box_crossing: Color32::from_rgb(40, 160, 80),
+        }
+    }
+    pub const fn dark() -> Tokens {
+        let mut t = Tokens::light();
+        t.app_bar = Color32::from_rgb(28, 31, 38);
+        t.toolbar = Color32::from_rgb(37, 41, 49);
+        t.panel = Color32::from_rgb(39, 43, 52);
+        t.panel_header = Color32::from_rgb(47, 52, 62);
+        t.border = Color32::from_rgb(63, 69, 82);
+        t.text = Color32::from_rgb(222, 226, 232);
+        t.text_dim = Color32::from_rgb(148, 155, 168);
+        t.accent = Color32::from_rgb(58, 136, 238);
+        t.accent_soft = Color32::from_rgb(42, 70, 110);
+        t.sketch_accent = Color32::from_rgb(110, 200, 140);
+        t.error = Color32::from_rgb(240, 100, 96);
+        t.warning = Color32::from_rgb(236, 170, 70);
+        t.icon = Color32::from_rgb(208, 214, 226);
+        t.icon_fill = Color32::from_rgb(86, 112, 150);
+        t.timeline = Color32::from_rgb(33, 37, 45);
+        t.hover = Color32::from_rgb(54, 61, 74);
+        t.hover_edge_halo = Color32::from_rgb(203, 203, 203);
+        t.origin_point = Color32::from_rgb(214, 215, 218);
+        t.viewport_top = Color32::from_rgb(46, 52, 64);
+        t.viewport_bottom = Color32::from_rgb(46, 52, 64);
+        t.grid = Color32::from_rgb(59, 65, 76);
+        t.grid_major = Color32::from_rgb(73, 79, 90);
+        t.body = Color32::from_rgb(152, 156, 162);
+        t.body_edge = Color32::from_rgb(16, 16, 18);
+        t.sketch = Color32::from_rgb(92, 150, 255);
+        t.sketch_fixed = Color32::from_rgb(232, 234, 238);
+        t.sketch_point = Color32::from_rgb(232, 234, 238);
+        t.sketch_locked = Color32::from_rgb(96, 204, 116);
+        t.dimension = Color32::from_rgb(224, 228, 234);
+        t.dimension_driven = Color32::from_rgb(142, 150, 164);
+        t.sketch_point_free = Color32::from_rgb(92, 150, 255);
+        t.profile_fill = Color32::from_rgba_unmultiplied_const(120, 150, 200, 40);
+        t.dialog_bg = Color32::from_rgb(59, 68, 83);
+        t.dialog_border = Color32::from_rgb(72, 83, 99);
+        t.chip = Color32::from_rgb(59, 101, 168);
+        t.heading_bg = Color32::from_rgb(38, 44, 55);
+        t.subheading_bg = Color32::from_rgb(48, 55, 68);
+        t.glyph_bg = Color32::from_rgb(44, 50, 60);
+        t.glyph_edge = Color32::from_rgb(200, 130, 120);
+        t.glyph_text = Color32::from_rgb(240, 165, 155);
+        t.overlay = Color32::from_rgba_unmultiplied_const(34, 38, 46, 240);
+        t.rubber_band = Color32::from_rgb(92, 160, 255);
+        t.timeline_item = Color32::from_rgb(52, 58, 70);
+        t.timeline_item_error = Color32::from_rgb(110, 50, 54);
+        t.timeline_marker = Color32::from_rgb(170, 178, 192);
+        t.field = Color32::from_rgb(30, 34, 41);
+        t.box_window = Color32::from_rgb(70, 150, 255);
+        t.box_crossing = Color32::from_rgb(80, 200, 120);
+        t
+    }
+}
@@ -0,0 +1,4 @@
+    html, body { margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden; background: #e8ebf0; }
+    #solidcraft_canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
+    #solidcraft_loading { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
+      color: #4a5060; font: 14px system-ui, sans-serif; pointer-events: none; }
@@ -103,28 +103,9 @@ impl Appearances {
 }

 /// The built-in appearance library: (name, colour, opacity).
-pub const LIBRARY: [(&str, [u8; 3], f64); 20] = [
-    ("Aluminum - Satin", [204, 208, 214], 1.0),
-    ("Aluminum - Anodized Black", [44, 46, 50], 1.0),
-    ("Aluminum - Anodized Blue", [52, 92, 160], 1.0),
-    ("Steel - Satin", [158, 164, 172], 1.0),
-    ("Stainless Steel - Brushed", [186, 191, 198], 1.0),
-    ("Cast Iron", [104, 104, 110], 1.0),
-    ("Brass - Polished", [208, 172, 88], 1.0),
-    ("Copper", [204, 122, 80], 1.0),
-    ("Titanium", [150, 148, 158], 1.0),
-    ("ABS - White", [236, 236, 230], 1.0),
-    ("ABS - Black", [36, 36, 38], 1.0),
-    ("ABS - Red", [196, 40, 40], 1.0),
-    ("ABS - Blue", [40, 90, 186], 1.0),
-    ("ABS - Yellow", [236, 196, 40], 1.0),
-    ("ABS - Green", [52, 150, 80], 1.0),
-    ("Rubber - Black", [28, 28, 28], 1.0),
-    ("Glass - Clear", [190, 220, 228], 0.25),
-    ("Glass - Smoked", [90, 96, 104], 0.45),
-    ("Wood - Oak", [190, 146, 92], 1.0),
-    ("Paint - Gloss White", [246, 246, 244], 1.0),
-];
+#[path = "../../../assets/appearances/library.rs"]
+mod defaults;
+pub use defaults::LIBRARY;

 /// A library appearance by name (case-insensitive).
 pub fn library(name: &str) -> Option<Look> {
@@ -263,7 +244,7 @@ pub fn pick_tolerance(b: &crate::ModelBody) -> f64 {
 }

 /// The point of triangle abc nearest p.
-fn closest_on_triangle(p: Vec3, a: Vec3, b: Vec3, c: Vec3) -> Vec3 {
+pub(crate) fn closest_on_triangle(p: Vec3, a: Vec3, b: Vec3, c: Vec3) -> Vec3 {
    let (ab, ac, ap) = (b - a, c - a, p - a);
    let (d1, d2) = (ab.dot(ap), ac.dot(ap));
    if d1 <= 0.0 && d2 <= 0.0 {
@@ -124,6 +124,10 @@ fn identity() -> Mat {
    IDENTITY
 }

+/// How deep and how many placements [`Document::placements`] walks.
+pub const MAX_PLACEMENT_DEPTH: usize = 64;
+pub const MAX_PLACEMENTS: usize = 100_000;
+
 fn map_plane(m: &Mat, p: &Plane) -> Plane {
    let (o, x, y) = (apply_point(m, p.origin), apply_vector(m, p.x), apply_vector(m, p.y));
    Plane::new(o, x, y).unwrap_or(*p)
@@ -221,7 +225,8 @@ impl FeatureKind {
                    pt(&mut t.point);
                }
            }
-            FeatureKind::Revolve { axis: AxisRef::Line { origin, dir: d }, .. } => {
+            FeatureKind::Revolve { axis: AxisRef::Line { origin, dir: d }, .. }
+            | FeatureKind::SurfaceRevolve { axis: AxisRef::Line { origin, dir: d }, .. } => {
                pt(origin);
                dir(d);
            }
@@ -232,9 +237,10 @@ impl FeatureKind {
                }
            }
            FeatureKind::Chamfer { edges, .. } => edges.iter_mut().for_each(pt),
-            FeatureKind::Shell { faces, .. } | FeatureKind::OffsetFace { faces, .. } | FeatureKind::DeleteFace { faces, .. } => {
-                faces.iter_mut().for_each(pt)
-            }
+            FeatureKind::Shell { faces, .. }
+            | FeatureKind::OffsetFace { faces, .. }
+            | FeatureKind::DeleteFace { faces, .. }
+            | FeatureKind::SurfaceOffset { faces, .. } => faces.iter_mut().for_each(pt),
            FeatureKind::Draft { faces, neutral, pull, .. } => {
                faces.iter_mut().for_each(pt);
                map_plane_ref(m, neutral);
@@ -322,6 +328,9 @@ impl FeatureKind {
            FeatureKind::Revolve { .. }
            | FeatureKind::Extrude { .. }
            | FeatureKind::SurfaceExtrude { .. }
+            | FeatureKind::SurfaceRevolve { .. }
+            | FeatureKind::SurfaceSweep { .. }
+            | FeatureKind::SurfaceLoft { .. }
            | FeatureKind::Combine { .. }
            | FeatureKind::Loft { .. }
            | FeatureKind::Sweep { .. }
@@ -337,6 +346,7 @@ impl FeatureKind {
            | FeatureKind::MeshConvert { .. }
            | FeatureKind::BodyTransfer { .. } => {}
            FeatureKind::Patch { edges, .. } | FeatureKind::SurfaceExtend { edges, .. } => edges.iter_mut().for_each(pt),
+            FeatureKind::Unstitch { faces, .. } | FeatureKind::ReverseNormal { faces, .. } => faces.iter_mut().for_each(pt),
            FeatureKind::SurfaceTrim { plane, tool, keep, .. } => {
                map_plane_ref(m, plane);
                if let Some(t) = tool {
@@ -370,13 +380,18 @@ impl Document {
    }

    /// Every placement of each component: (component, occurrence path ids, world transform).
+    /// A branch stops past [`MAX_PLACEMENT_DEPTH`] levels, the walk past [`MAX_PLACEMENTS`] placements.
    pub fn placements(&self) -> Vec<(u64, Vec<u64>, Mat)> {
        let mut out = vec![(0, Vec::new(), IDENTITY)];
        let mut stack: Vec<(u64, Vec<u64>, Mat)> = vec![(0, Vec::new(), IDENTITY)];
        while let Some((comp, path, m)) = stack.pop() {
-            if path.len() > 64 || out.len() > 100_000 {
+            if out.len() > MAX_PLACEMENTS {
                break;
            }
+            // Only this branch stops past the depth limit; the others are still walked.
+            if path.len() > MAX_PLACEMENT_DEPTH {
+                continue;
+            }
            for o in self.occurrences.iter().filter(|o| o.parent == comp) {
                let mut p = path.clone();
                p.push(o.id);
@@ -31,11 +31,14 @@ pub fn validate_body_transfer(doc: &Document, bodies: &[String], from: u64, to:
    Ok(())
 }

+/// Moves the bodies in `st`, which the evaluator discards when this fails (so it is changed in
+/// place rather than copied: a copy of every body for each moved one was most of the cost).
 pub(crate) fn evaluate(doc: &Document, st: &mut ModelState, bodies: &[String], from: u64, to: u64, transform: Mat) -> Result<()> {
    validate_body_transfer(doc, bodies, from, to, &transform)?;
-    let mut next = st.clone();
+    let mut moved = Vec::with_capacity(bodies.len());
    for name in bodies {
-        let old = st.body(name).ok_or_else(|| DocError::Unknown(format!("transferred body `{name}`")))?;
+        let (slot, old) =
+            st.bodies.iter().enumerate().find(|(_, b)| b.name == *name).ok_or_else(|| DocError::Unknown(format!("transferred body `{name}`")))?;
        if doc.model_body_component(old) != from {
            return Err(DocError::Invalid(format!("body `{name}` no longer belongs to transfer source component {from}")));
        }
@@ -47,12 +50,14 @@ pub(crate) fn evaluate(doc: &Document, st: &mut ModelState, bodies: &[String], f
        body.source_transform = crate::mat_mul(&transform, &old.source_transform);
        body.imported = old.imported.clone();
        body.names = crate::naming::NameCell::same(old);
-        let slot = next.bodies.iter_mut().find(|b| b.name == *name).ok_or_else(|| DocError::Unknown(format!("transferred body `{name}`")))?;
-        *slot = body;
+        moved.push((slot, body));
    }
-    crate::body_transfer_sheet::remap_sheet_metadata(&mut next, bodies, &transform)?;
-    *st = next;
-    Ok(())
+    for (slot, body) in moved {
+        if let Some(b) = st.bodies.get_mut(slot) {
+            *b = body;
+        }
+    }
+    crate::body_transfer_sheet::remap_sheet_metadata(st, bodies, &transform)
 }

 #[cfg(test)]
@@ -48,19 +48,21 @@ impl FeatureKind {
            }
            FeatureKind::Extrude { sketch, .. }
            | FeatureKind::SurfaceExtrude { sketch, .. }
+            | FeatureKind::SurfaceRevolve { sketch, .. }
            | FeatureKind::Revolve { sketch, .. }
            | FeatureKind::Emboss { sketch, .. }
            | FeatureKind::SheetBase { sketch, .. }
            | FeatureKind::SheetContour { sketch, .. }
            | FeatureKind::Rib { sketch, .. } => sk(sketch),
            FeatureKind::Patch { sketch: Some(s), .. } => sk(s),
-            FeatureKind::Sweep { sketch, path_sketch, .. } => {
+            FeatureKind::Sweep { sketch, path_sketch, .. } | FeatureKind::SurfaceSweep { sketch, path_sketch, .. } => {
                sk(sketch);
                sk(path_sketch);
            }
            FeatureKind::Pipe { path_sketch, .. } => sk(path_sketch),
            FeatureKind::SheetFold { sketch: Some(s), .. } => sk(s),
            FeatureKind::Loft { sections, .. } => sections.iter_mut().for_each(|s| sk(&mut s.sketch)),
+            FeatureKind::SurfaceLoft { sections } => sections.iter_mut().for_each(|s| sk(&mut s.sketch)),
            FeatureKind::Hole { points: Some(p), .. } => sk(&mut p.sketch),
            FeatureKind::Pattern { features, pattern, .. } => {
                feats(features);
@@ -303,6 +305,7 @@ impl FeatureKind {
            | K::SplitFace { body, .. }
            | K::OffsetFace { body, .. }
            | K::DeleteFace { body, .. }
+            | K::SurfaceOffset { body, .. }
            | K::ReplaceFace { body, .. }
            | K::SheetFlange { body, .. }
            | K::SheetHem { body, .. }
@@ -321,6 +324,8 @@ impl FeatureKind {
            | K::SheetConvert { body, .. }
            | K::SurfaceExtend { body, .. }
            | K::SurfaceTrim { body, .. }
+            | K::Unstitch { body, .. }
+            | K::ReverseNormal { body, .. }
            | K::MeshConvert { body, .. } => mapped_name(body, bodies),
            _ => {}
        }
@@ -457,6 +457,46 @@ impl<'a> ExactSketchCurves<'a> {
    }
 }

+impl ExactSketchCurves<'_> {
+    /// The sketch curves a generated segment is drawn on: [`find_along`](Self::find_along)'s one
+    /// curve, else every drawn curve that contains it or runs along and overlaps it (projections
+    /// only where no drawn curve does), in the sketch's order. A segment two coincident curves
+    /// were drawn over (four squares drawn edge to edge), or one a profile merged from collinear
+    /// curves (the outline of several adjacent profiles extruded together), is drawn on all of
+    /// them: the set is exact and fixed by the sketch, so its face is named by it (the first its
+    /// name, the others aliases) rather than not at all. Empty when it lies on none.
+    pub(crate) fn find_all_along(&self, generated: &Seg2) -> Vec<String> {
+        if let Some(id) = self.find_along(generated) {
+            return vec![id];
+        }
+        let runs_along = |original: &Seg2| {
+            if exact_segment_contains(original, generated) {
+                return true;
+            }
+            let (Seg2::Line { a, b }, Seg2::Line { a: c, b: d }) = (*original, *generated) else { return false };
+            let direction = b - a;
+            let scale = direction.len().max((d - c).len()).max(1.);
+            if direction.len() <= 1e-12
+                || direction.cross(c - a).abs() > 1e-10 * scale * scale
+                || direction.cross(d - a).abs() > 1e-10 * scale * scale
+            {
+                return false;
+            }
+            let (tc, td) = ((c - a).dot(direction) / direction.len2(), (d - a).dot(direction) / direction.len2());
+            tc.min(td).max(0.) < tc.max(td).min(1.) - 1e-9
+        };
+        let pick = |linked: bool| -> Vec<String> {
+            self.segments
+                .iter()
+                .filter(|(_, l, originals)| *l == linked && originals.iter().any(runs_along))
+                .map(|(id, _, _)| (*id).to_owned())
+                .collect()
+        };
+        let drawn = pick(false);
+        if drawn.is_empty() { pick(true) } else { drawn }
+    }
+}
+
 fn exact_segment_contains(original: &Seg2, generated: &Seg2) -> bool {
    match (original, generated) {
        (Seg2::Line { a, b }, Seg2::Line { a: c, b: d }) => {
@@ -485,7 +485,7 @@ pub enum FeatureKind {
        depth: Option<String>,
        #[serde(default)]
        hole: HoleKind,
-        /// Drill at these sketch points instead (one hole each, perpendicular to the sketch);
+        /// Drill at these sketch points instead (one hole each, perpendicular to the sketch, into the material: against the sketch normal, or along it when only that side has material);
        /// the holes follow the points when the sketch changes.
        #[serde(default, skip_serializing_if = "Option::is_none")]
        points: Option<SketchPoints>,
@@ -607,6 +607,10 @@ pub enum FeatureKind {
        faces: Vec<Vec3>,
        #[serde(default, skip_serializing_if = "Option::is_none")]
        body: Option<String>,
+        /// Close the gap by extending the neighbouring faces (the default); `false` leaves it
+        /// open, the faces left a surface body.
+        #[serde(default = "yes", skip_serializing_if = "is_yes")]
+        heal: bool,
    },
    /// A box around bodies, grown by a margin.
    BoundingSolid {
@@ -937,6 +941,65 @@ pub enum FeatureKind {
        curves: Vec<String>,
        extent: Extent,
    },
+    /// A body taken apart: each face at `faces` (every face when empty) its own surface body,
+    /// the faces left one surface body under the body's name. A solid comes apart into surfaces.
+    Unstitch {
+        body: String,
+        #[serde(default, skip_serializing_if = "Vec::is_empty")]
+        faces: Vec<Vec3>,
+    },
+    /// A surface body with the faces at `faces` (every face when empty) turned over.
+    ReverseNormal {
+        body: String,
+        #[serde(default, skip_serializing_if = "Vec::is_empty")]
+        faces: Vec<Vec3>,
+    },
+    /// A surface body turned about an axis from open curve chains and the boundaries of
+    /// profiles: walls only, no caps (a solid where a full turn closes them).
+    SurfaceRevolve {
+        sketch: u64,
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        profiles: Option<ProfileSel>,
+        #[serde(default, skip_serializing_if = "Vec::is_empty")]
+        curves: Vec<String>,
+        axis: AxisRef,
+        angle: String,
+        /// Two Sides: the angle on the other side.
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        angle2: Option<String>,
+        /// Symmetric: `angle` split evenly either side of the sketch.
+        #[serde(default, skip_serializing_if = "std::ops::Not::not")]
+        symmetric: bool,
+    },
+    /// A surface body swept along a chain of sketch curves from open curve chains and the
+    /// boundaries of profiles: walls only, no caps.
+    SurfaceSweep {
+        sketch: u64,
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        profiles: Option<ProfileSel>,
+        #[serde(default, skip_serializing_if = "Vec::is_empty")]
+        curves: Vec<String>,
+        path_sketch: u64,
+        path: Vec<String>,
+    },
+    /// A surface body lofted through sections in order, each one open or closed chain of
+    /// sketch curves: walls only, no caps.
+    SurfaceLoft {
+        sections: Vec<SheetSection>,
+    },
+    /// The faces at `faces` copied out at a signed `distance` along their normals as a new
+    /// surface body (0 copies them); `chain` takes each pick's whole smooth chain of faces;
+    /// fitted faces within `tolerance`.
+    SurfaceOffset {
+        faces: Vec<Vec3>,
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        body: Option<String>,
+        distance: String,
+        #[serde(default, skip_serializing_if = "std::ops::Not::not")]
+        chain: bool,
+        #[serde(default, skip_serializing_if = "Option::is_none")]
+        tolerance: Option<String>,
+    },
    /// A planar surface body extended outward by `distance` past the edges through `edges`.
    SurfaceExtend {
        body: String,
@@ -969,8 +1032,9 @@ pub enum FeatureKind {
    Import {
        /// Source file name (display only).
        file: String,
-        /// The STEP (ISO 10303-21) text.
-        step: String,
+        /// The STEP (ISO 10303-21) text, shared by every copy of the design (undo states,
+        /// previews, scratch sessions): a large file is held once, not once per edit.
+        step: std::sync::Arc<str>,
        /// The file's product/assembly tree, kept for components.
        #[serde(default, skip_serializing_if = "Vec::is_empty")]
        components: Vec<solidcraft_kernel::StepNode>,
@@ -996,6 +1060,9 @@ pub enum FilletStyle {
    Constant,
    /// `radius` is the chord: the width across the blend.
    Chord,
+    /// G2 quintic blend of planar faces along a straight edge. `radius` sets the
+    /// equivalent circular setback, not a constant curvature radius.
+    Curvature,
    /// `radius` at the end of each edge nearest `start`, `radius2` at the other; `mid` radii at
    /// positions between (0 to 1 from the start end); straight between them, or `smooth`.
    Variable {
@@ -1068,6 +1135,9 @@ pub struct MeshData {
 pub struct SketchPoints {
    pub sketch: u64,
    pub ids: Vec<String>,
+    /// Drill the other way: away from the side the holes would go into by themselves.
+    #[serde(default, skip_serializing_if = "std::ops::Not::not")]
+    pub flip: bool,
 }

 /// A component: a node of the design tree that owns sketches, features and bodies. The root
@@ -1091,6 +1161,17 @@ pub struct LoftSection {
    pub point: Option<String>,
 }

+/// A section of a surface loft: one chain from a sketch (one profile's boundary, or curves
+/// meeting end to end).
+#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+pub struct SheetSection {
+    pub sketch: u64,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub profiles: Option<ProfileSel>,
+    #[serde(default, skip_serializing_if = "Vec::is_empty")]
+    pub curves: Vec<String>,
+}
+
 /// Coil cross-sections.
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Default, Serialize, Deserialize)]
 #[serde(rename_all = "snake_case")]
@@ -1238,14 +1319,16 @@ impl FeatureKind {
        match self {
            K::Extrude { sketch, .. }
            | K::SurfaceExtrude { sketch, .. }
+            | K::SurfaceRevolve { sketch, .. }
            | K::Revolve { sketch, .. }
            | K::Emboss { sketch, .. }
            | K::Rib { sketch, .. }
            | K::SheetBase { sketch, .. }
            | K::SheetContour { sketch, .. } => vec![*sketch],
-            K::Sweep { sketch, path_sketch, .. } => vec![*sketch, *path_sketch],
+            K::Sweep { sketch, path_sketch, .. } | K::SurfaceSweep { sketch, path_sketch, .. } => vec![*sketch, *path_sketch],
            K::Pipe { path_sketch, .. } | K::Pattern { pattern: PatternKind::Path { path_sketch, .. }, .. } => vec![*path_sketch],
            K::Loft { sections, .. } => sections.iter().map(|s| s.sketch).collect(),
+            K::SurfaceLoft { sections } => sections.iter().map(|s| s.sketch).collect(),
            K::SheetFold { sketch, .. } | K::SplitFace { sketch, .. } | K::Patch { sketch, .. } => sketch.iter().copied().collect(),
            K::Hole { points, .. } => points.iter().map(|p| p.sketch).collect(),
            K::Sketch { .. }
@@ -1268,6 +1351,7 @@ impl FeatureKind {
            | K::Scale { .. }
            | K::OffsetFace { .. }
            | K::DeleteFace { .. }
+            | K::SurfaceOffset { .. }
            | K::BoundingSolid { .. }
            | K::ReplaceFace { .. }
            | K::Align { .. }
@@ -1286,6 +1370,8 @@ impl FeatureKind {
            | K::Thicken { .. }
            | K::SurfaceExtend { .. }
            | K::SurfaceTrim { .. }
+            | K::Unstitch { .. }
+            | K::ReverseNormal { .. }
            | K::Move { .. }
            | K::Import { .. }
            | K::MeshImport { .. }
@@ -1345,6 +1431,7 @@ impl FeatureKind {
            FeatureKind::Scale { .. } => "ScaleFeature",
            FeatureKind::OffsetFace { .. } => "OffsetFacesFeature",
            FeatureKind::DeleteFace { .. } => "DeleteFaceFeature",
+            FeatureKind::SurfaceOffset { .. } => "OffsetSurfaceFeature",
            FeatureKind::BoundingSolid { .. } => "BoundingSolidFeature",
            FeatureKind::Pipe { .. } => "PipeFeature",
            FeatureKind::Emboss { .. } => "EmbossFeature",
@@ -1370,10 +1457,15 @@ impl FeatureKind {
            FeatureKind::Remove { .. } => "RemoveFeature",
            FeatureKind::Patch { .. } => "PatchFeature",
            FeatureKind::SurfaceExtrude { .. } => "SurfaceExtrudeFeature",
+            FeatureKind::SurfaceRevolve { .. } => "SurfaceRevolveFeature",
+            FeatureKind::SurfaceSweep { .. } => "SurfaceSweepFeature",
+            FeatureKind::SurfaceLoft { .. } => "SurfaceLoftFeature",
            FeatureKind::Stitch { .. } => "StitchFeature",
            FeatureKind::Thicken { .. } => "ThickenFeature",
            FeatureKind::SurfaceTrim { .. } => "TrimFeature",
            FeatureKind::SurfaceExtend { .. } => "ExtendFeature",
+            FeatureKind::Unstitch { .. } => "UnstitchFeature",
+            FeatureKind::ReverseNormal { .. } => "ReverseNormalFeature",
            FeatureKind::Import { .. } => "BaseFeature",
            FeatureKind::MeshImport { .. } => "MeshFeature",
            FeatureKind::MeshConvert { .. } => "MeshConvertFeature",
@@ -1412,6 +1504,7 @@ impl FeatureKind {
            FeatureKind::Scale { .. } => "Scale",
            FeatureKind::OffsetFace { .. } => "OffsetFace",
            FeatureKind::DeleteFace { .. } => "DeleteFace",
+            FeatureKind::SurfaceOffset { .. } => "OffsetSurface",
            FeatureKind::BoundingSolid { .. } => "BoundingSolid",
            FeatureKind::Pipe { .. } => "Pipe",
            FeatureKind::Emboss { .. } => "Emboss",
@@ -1437,10 +1530,15 @@ impl FeatureKind {
            FeatureKind::Remove { .. } => "Remove",
            FeatureKind::Patch { .. } => "Patch",
            FeatureKind::SurfaceExtrude { .. } => "SurfaceExtrude",
+            FeatureKind::SurfaceRevolve { .. } => "SurfaceRevolve",
+            FeatureKind::SurfaceSweep { .. } => "SurfaceSweep",
+            FeatureKind::SurfaceLoft { .. } => "SurfaceLoft",
            FeatureKind::Stitch { .. } => "Stitch",
            FeatureKind::Thicken { .. } => "Thicken",
            FeatureKind::SurfaceTrim { .. } => "Trim",
            FeatureKind::SurfaceExtend { .. } => "Extend",
+            FeatureKind::Unstitch { .. } => "Unstitch",
+            FeatureKind::ReverseNormal { .. } => "ReverseNormal",
            FeatureKind::Import { .. } => "Import",
            FeatureKind::MeshImport { .. } => "Mesh",
            FeatureKind::MeshConvert { .. } => "ConvertMesh",
@@ -1457,10 +1555,14 @@ impl FeatureKind {
            | FeatureKind::Sweep { sketch, profiles, .. }
            | FeatureKind::Emboss { sketch, profiles, .. }
            | FeatureKind::SheetBase { sketch, profiles, .. } => vec![(*sketch, profiles)],
-            FeatureKind::Patch { sketch: Some(sk), profiles, .. } | FeatureKind::SurfaceExtrude { sketch: sk, profiles: Some(profiles), .. } => {
+            FeatureKind::Patch { sketch: Some(sk), profiles, .. }
+            | FeatureKind::SurfaceExtrude { sketch: sk, profiles: Some(profiles), .. }
+            | FeatureKind::SurfaceRevolve { sketch: sk, profiles: Some(profiles), .. }
+            | FeatureKind::SurfaceSweep { sketch: sk, profiles: Some(profiles), .. } => {
                vec![(*sk, profiles)]
            }
            FeatureKind::Loft { sections, .. } => sections.iter_mut().filter(|s| s.point.is_none()).map(|s| (s.sketch, &mut s.profiles)).collect(),
+            FeatureKind::SurfaceLoft { sections } => sections.iter_mut().filter_map(|s| Some((s.sketch, s.profiles.as_mut()?))).collect(),
            _ => Vec::new(),
        }
    }
@@ -1473,12 +1575,16 @@ impl FeatureKind {
            | FeatureKind::Sweep { sketch, profiles, .. }
            | FeatureKind::Emboss { sketch, profiles, .. }
            | FeatureKind::SheetBase { sketch, profiles, .. } => vec![(*sketch, profiles)],
-            FeatureKind::Patch { sketch: Some(sketch), profiles, .. } | FeatureKind::SurfaceExtrude { sketch, profiles: Some(profiles), .. } => {
+            FeatureKind::Patch { sketch: Some(sketch), profiles, .. }
+            | FeatureKind::SurfaceExtrude { sketch, profiles: Some(profiles), .. }
+            | FeatureKind::SurfaceRevolve { sketch, profiles: Some(profiles), .. }
+            | FeatureKind::SurfaceSweep { sketch, profiles: Some(profiles), .. } => {
                vec![(*sketch, profiles)]
            }
            FeatureKind::Loft { sections, .. } => {
                sections.iter().filter(|section| section.point.is_none()).map(|section| (section.sketch, &section.profiles)).collect()
            }
+            FeatureKind::SurfaceLoft { sections } => sections.iter().filter_map(|s| Some((s.sketch, s.profiles.as_ref()?))).collect(),
            _ => Vec::new(),
        }
    }
@@ -1489,6 +1595,7 @@ impl FeatureKind {
            | FeatureKind::Draft { faces, .. }
            | FeatureKind::OffsetFace { faces, .. }
            | FeatureKind::DeleteFace { faces, .. }
+            | FeatureKind::SurfaceOffset { faces, .. }
            | FeatureKind::SplitFace { faces, .. }
            | FeatureKind::ReplaceFace { faces, .. } => faces.iter_mut().collect(),
            FeatureKind::Hole { position, points: None, to, .. } => std::iter::once(position).chain(to.iter_mut()).collect(),
@@ -1538,7 +1645,7 @@ impl FeatureKind {
                    v.push(d);
                }
            }
-            FeatureKind::Revolve { angle, angle2, .. } => {
+            FeatureKind::Revolve { angle, angle2, .. } | FeatureKind::SurfaceRevolve { angle, angle2, .. } => {
                v.push(angle);
                v.extend(angle2.iter().map(String::as_str));
            }
@@ -1550,7 +1657,7 @@ impl FeatureKind {
                        v.extend(mid.iter().map(|(_, r)| r.as_str()));
                    }
                    FilletStyle::Spline { radii, .. } => v.extend(radii.iter().map(String::as_str)),
-                    FilletStyle::Constant | FilletStyle::Chord => {}
+                    FilletStyle::Constant | FilletStyle::Chord | FilletStyle::Curvature => {}
                }
            }
            FeatureKind::Chamfer { distance, distance2, angle, .. } => {
@@ -1586,7 +1693,7 @@ impl FeatureKind {
            },
            FeatureKind::Mirror { plane, .. } => plane_exprs(plane, &mut v),
            FeatureKind::Shell { thickness, .. } => v.push(thickness),
-            FeatureKind::Loft { .. } | FeatureKind::Sweep { .. } => {}
+            FeatureKind::Loft { .. } | FeatureKind::Sweep { .. } | FeatureKind::SurfaceSweep { .. } | FeatureKind::SurfaceLoft { .. } => {}
            FeatureKind::Draft { angle, neutral, .. } => {
                v.push(angle);
                plane_exprs(neutral, &mut v);
@@ -1664,11 +1771,18 @@ impl FeatureKind {
            }
            FeatureKind::ReplaceFace { target, .. } => plane_exprs(target, &mut v),
            FeatureKind::Align { .. } | FeatureKind::Remove { .. } | FeatureKind::BoundaryFill { .. } | FeatureKind::DeleteFace { .. } => {}
+            FeatureKind::SurfaceOffset { distance, tolerance, .. } => {
+                v.push(distance);
+                if let Some(t) = tolerance {
+                    v.push(t);
+                }
+            }
            FeatureKind::Stitch { tolerance, .. } => v.push(tolerance),
            FeatureKind::MeshConvert { tolerance, .. } => v.push(tolerance),
            FeatureKind::Thicken { thickness, .. } => v.push(thickness),
            FeatureKind::SurfaceTrim { plane, .. } => plane_exprs(plane, &mut v),
            FeatureKind::SurfaceExtend { distance, .. } => v.push(distance),
+            FeatureKind::Unstitch { .. } | FeatureKind::ReverseNormal { .. } => {}
            FeatureKind::Patch { .. } => {}
            FeatureKind::Import { .. } | FeatureKind::MeshImport { .. } | FeatureKind::BodyTransfer { .. } => {}
        }
@@ -1725,6 +1839,14 @@ fn all_profiles() -> ProfileSel {
    ProfileSel::All
 }

+fn yes() -> bool {
+    true
+}
+
+fn is_yes(b: &bool) -> bool {
+    *b
+}
+
 fn zero_expr() -> String {
    "0".into()
 }
@@ -2557,45 +2679,9 @@ impl Document {
 }

 /// Density of the default material (g/cm³), as Fusion's default.
-pub const DEFAULT_DENSITY: f64 = 1.29;
-
-/// Physical materials: name and density (g/cm³).
-pub const MATERIALS: [(&str, f64); 14] = [
-    ("Default", DEFAULT_DENSITY),
-    ("Steel", 7.85),
-    ("Stainless Steel", 8.0),
-    ("Aluminum", 2.70),
-    ("Brass", 8.50),
-    ("Copper", 8.96),
-    ("Titanium", 4.43),
-    ("Cast Iron", 7.20),
-    ("ABS Plastic", 1.06),
-    ("PLA", 1.24),
-    ("Nylon", 1.14),
-    ("Polycarbonate", 1.20),
-    ("Oak", 0.75),
-    ("Glass", 2.50),
-];
-
-/// How a physical material looks (sRGB); the default material has no colour of its own.
-pub fn material_color(name: &str) -> Option<[u8; 3]> {
-    Some(match name {
-        "Steel" => [158, 164, 172],
-        "Stainless Steel" => [186, 191, 198],
-        "Aluminum" => [204, 208, 214],
-        "Brass" => [208, 172, 88],
-        "Copper" => [204, 122, 80],
-        "Titanium" => [150, 148, 158],
-        "Cast Iron" => [104, 104, 110],
-        "ABS Plastic" => [222, 222, 216],
-        "PLA" => [110, 160, 222],
-        "Nylon" => [236, 230, 214],
-        "Polycarbonate" => [196, 216, 232],
-        "Oak" => [190, 146, 92],
-        "Glass" => [170, 208, 218],
-        _ => return None,
-    })
-}
+#[path = "../../../assets/materials/library.rs"]
+mod materials;
+pub use materials::{DEFAULT_DENSITY, MATERIALS, material_color};

 /// A physical material defined in a design (`material.create`): its name, its density and,
 /// optionally, the look it gives bodies without an appearance of their own.
@@ -5,7 +5,8 @@ use std::hash::{Hash, Hasher};
 use std::sync::{Arc, OnceLock};

 use serde::Serialize;
-use solidcraft_geom::{Mesh, Plane, Region2, Vec2, Vec3};
+use solidcraft_geom::tess::TessPlan;
+use solidcraft_geom::{Mesh, Plane, Region2, Vec2, Vec3, regions_apart};
 use solidcraft_kernel::{self as kernel, Body, BoolOp};
 use solidcraft_sketch::{CurveKind, Profile, SolveReport, find_profiles};

@@ -27,6 +28,12 @@ pub struct ModelBody {
    // Timeline snapshots are cloned before meshes are requested. Share the cell itself so
    // meshing any snapshot also warms every unchanged copy of this body.
    mesh: Arc<OnceLock<Arc<Mesh>>>,
+    /// The display plan (none when the body has no plan: a mesh body, or one the planner
+    /// refuses), shared like the mesh. A GPU viewport draws it.
+    plan: Arc<OnceLock<Option<Arc<TessPlan>>>>,
+    /// The plan evaluated on the CPU (none without a plan), shared like the mesh: the triangles a
+    /// GPU viewport draws, so a highlight over a face lies exactly on it.
+    plan_mesh: Arc<OnceLock<Option<Arc<Mesh>>>>,
    /// Identity of this body's content for the evaluation cache: the key of the evaluation
    /// that produced it (kept while later features pass it through unchanged).
    key: u64,
@@ -40,6 +47,9 @@ pub struct ModelBody {
    pub transferred: bool,
    /// The look it was imported with, carried through later features.
    pub imported: Option<Arc<crate::appearance::ImportedLook>>,
+    /// [`Body::retained_bytes`] of `body`, measured when a feature made or changed it (0: not
+    /// measured), so the evaluation cache's budget does not walk every body after every feature.
+    bytes: usize,
 }

 impl ModelBody {
@@ -51,12 +61,15 @@ impl ModelBody {
            body,
            feature,
            mesh: Arc::new(OnceLock::new()),
+            plan: Arc::new(OnceLock::new()),
+            plan_mesh: Arc::new(OnceLock::new()),
            key: 0,
            names: Default::default(),
            made: Default::default(),
            component: 0,
            transferred: false,
            imported: None,
+            bytes: 0,
        }
    }
    pub fn definition_name(&self) -> &str {
@@ -66,14 +79,42 @@ impl ModelBody {
    /// curved face or edge turning more than [`kernel::DISPLAY_ANGLE`], so that a bend or a
    /// hole that is small beside the body is still drawn round.
    pub fn mesh(&self) -> Arc<Mesh> {
+        // From the reference mesher, not the display plan: the model reads this mesh (holes
+        // finding their surface, picks naming their face, sketch planes), and a different
+        // triangulation moved those and changed what designs build. A GPU viewport draws the
+        // plan ([`ModelBody::display_plan`]).
        self.mesh
-            .get_or_init(|| {
-                let tol = (self.body.size() * 1e-3).max(1e-3);
-                Arc::new(self.body.display_mesh_angular(tol, kernel::DISPLAY_ANGLE).unwrap_or_default())
+            .get_or_init(|| Arc::new(self.body.reference_display_mesh_angular(self.display_tol(), kernel::DISPLAY_ANGLE).unwrap_or_default()))
+            .clone()
+    }
+
+    /// The display plan of this body (the same tolerance and angle as [`ModelBody::mesh`]), made
+    /// once; `None` when the body has no plan (a mesh body, or one the planner refuses).
+    pub fn display_plan(&self) -> Option<Arc<TessPlan>> {
+        self.plan
+            .get_or_init(|| match self.body.display_plan_angular(self.display_tol(), kernel::DISPLAY_ANGLE) {
+                Ok(plan) => Some(Arc::new(plan)),
+                Err(e) => {
+                    log::debug!("{}: no display plan ({e})", self.name);
+                    None
+                }
            })
            .clone()
    }

+    /// The display plan's mesh, evaluated on the CPU once: the same triangles a GPU viewport
+    /// evaluates and draws for this body. Highlights over a face drawn from the plan use it, since
+    /// the reference mesh ([`ModelBody::mesh`]) triangulates the face differently and the two
+    /// would fight at equal depth. `None` when the body has no plan.
+    pub fn plan_mesh(&self) -> Option<Arc<Mesh>> {
+        self.plan_mesh.get_or_init(|| self.display_plan().and_then(|plan| self.body.display_mesh_of(&plan).ok()).map(Arc::new)).clone()
+    }
+
+    /// The display mesh's chord tolerance: 1/1000 of the body's size.
+    fn display_tol(&self) -> f64 {
+        (self.body.size() * 1e-3).max(1e-3)
+    }
+
    /// Already computed display geometry; saving must not trigger cold tessellation.
    pub fn cached_mesh(&self) -> Option<Arc<Mesh>> {
        self.mesh.get().cloned()
@@ -446,19 +487,28 @@ impl ModelState {
        if !f.shell_piece_order {
            crate::lineage::order_lumps(&mut self.bodies, &origin);
        }
+        // The bodies before the feature by name, in their order (names repeat only in damaged
+        // states): every lookup below is the first match of a linear search, without walking
+        // every earlier body for every body, after every feature.
+        let mut by_name: std::collections::HashMap<&str, Vec<&ModelBody>> = std::collections::HashMap::with_capacity(before.bodies.len());
+        for old in &before.bodies {
+            by_name.entry(old.name.as_str()).or_default().push(old);
+        }
        for b in &mut self.bodies {
+            let olds: &[&ModelBody] = by_name.get(b.name.as_str()).map(Vec::as_slice).unwrap_or_default();
            if !matches!(f.kind, FeatureKind::BodyTransfer { .. })
-                && let Some(old) = before.bodies.iter().find(|old| old.name == b.name && old.transferred)
+                && let Some(old) = olds.iter().find(|old| old.transferred)
            {
                b.transferred = true;
                b.component = old.component;
                b.source_transform = old.source_transform;
            }
-            let kept = before.bodies.iter().find(|x| x.name == b.name && x.body.same(&b.body));
+            let kept = olds.iter().find(|x| x.body.same(&b.body));
            match kept {
                Some(x) => {
                    b.key = x.key;
                    b.names = x.names.clone();
+                    b.bytes = if x.bytes > 0 { x.bytes } else { b.body.retained_bytes() };
                }
                None => {
                    let mut h = std::collections::hash_map::DefaultHasher::new();
@@ -469,17 +519,18 @@ impl ModelState {
                    }
                    // Faces split on purpose stay split through later features (for export).
                    if b.body.split_lines().is_none()
-                        && let Some(lines) = before.bodies.iter().find(|x| x.name == b.name).and_then(|x| x.body.split_lines())
+                        && let Some(lines) = olds.first().and_then(|x| x.body.split_lines())
                    {
                        b.body = b.body.clone().with_split_lines(Some(lines.clone()));
                    }
                    // An imported look outlives the operations on the body.
                    if b.body.paint().is_none()
                        && b.body.color().is_none()
-                        && let Some(old) = before.bodies.iter().find(|x| x.name == b.name)
+                        && let Some(old) = olds.first()
                    {
                        b.imported = crate::appearance::ImportedLook::of(old);
                    }
+                    b.bytes = b.body.retained_bytes();
                }
            }
        }
@@ -570,7 +621,7 @@ impl ModelState {
    /// topology is what makes a kept timeline snapshot expensive, so it dominates; sketches
    /// and the rest are counted from their entity counts.
    pub fn retained_bytes(&self) -> usize {
-        let bodies: usize = self.bodies.iter().map(|b| b.body.retained_bytes()).sum();
+        let bodies: usize = self.bodies.iter().map(|b| if b.bytes > 0 { b.bytes } else { b.body.retained_bytes() }).sum();
        let sketches: usize = self.sketches.iter().map(|s| s.retained_bytes()).sum();
        bodies + sketches + self.sheets.len() * 4096 + self.threads.len() * 192 + self.construct.len() * 192
    }
@@ -578,6 +629,17 @@ impl ModelState {
    pub fn body(&self, name: &str) -> Option<&ModelBody> {
        self.bodies.iter().find(|b| b.name == name)
    }
+
+    /// Make every body's display mesh now, on all cores (bodies are meshed independently and
+    /// each keeps its own mesh, so the meshes are those `ModelBody::mesh` makes one by one).
+    /// Stops starting bodies once `go_on` says no.
+    pub fn warm_meshes(&self, go_on: impl Fn() -> bool + Sync) {
+        kernel::for_each_on_threads(&self.bodies, 16, |b| {
+            if go_on() {
+                let _ = b.mesh();
+            }
+        });
+    }
    pub fn sketch(&self, feature: u64) -> Option<&SolvedSketch> {
        self.sketches.iter().find(|s| s.feature == feature).map(|s| &**s)
    }
@@ -828,6 +890,7 @@ fn cache_key(f: &Feature, chain_fp: u64, local: u64, ctx: u64, state: &ModelStat
 fn placement_digest(doc: &Document, f: &Feature) -> u64 {
    let path = match &f.kind {
        FeatureKind::Sweep { path_sketch, .. }
+        | FeatureKind::SurfaceSweep { path_sketch, .. }
        | FeatureKind::Pipe { path_sketch, .. }
        | FeatureKind::Pattern { pattern: crate::PatternKind::Path { path_sketch, .. }, .. } => Some(*path_sketch),
        _ => None,
@@ -840,12 +903,21 @@ fn placement_digest(doc: &Document, f: &Feature) -> u64 {
        for frame in [doc.component_transform(f.component), doc.component_transform(owner)] {
            frame.iter().flatten().for_each(|value| value.to_bits().hash(&mut hash));
        }
-        if let FeatureKind::Sweep { sketch, .. } = &f.kind {
+        if let FeatureKind::Sweep { sketch, .. } | FeatureKind::SurfaceSweep { sketch, .. } = &f.kind {
            let owner = doc.feature(*sketch).map(|feature| feature.component).unwrap_or(0);
            doc.component_transform(owner).iter().flatten().for_each(|value| value.to_bits().hash(&mut hash));
        }
        return hash.finish();
    }
+    // To / From Object finds its target where that target's component is placed (#928).
+    let to_object = match &f.kind {
+        FeatureKind::Extrude { extent, .. } => extent.to.is_some() || extent.from.is_some(),
+        FeatureKind::Revolve { to, .. } => to.is_some(),
+        _ => false,
+    };
+    if to_object {
+        return if doc.occurrences.is_empty() && doc.body_offsets.is_empty() { 0 } else { placements_hash(doc) };
+    }
    let FeatureKind::Sketch { plane, sketch } = &f.kind else { return 0 };
    let anchor = crate::face_anchor::plane_face_anchor(plane);
    if (doc.occurrences.is_empty() && (anchor.is_none() || doc.body_offsets.is_empty()))
@@ -853,6 +925,11 @@ fn placement_digest(doc: &Document, f: &Feature) -> u64 {
    {
        return 0;
    }
+    placements_hash(doc)
+}
+
+/// Every occurrence's placement and every body offset.
+fn placements_hash(doc: &Document) -> u64 {
    let mut h = std::collections::hash_map::DefaultHasher::new();
    for o in &doc.occurrences {
        o.id.hash(&mut h);
@@ -968,6 +1045,12 @@ impl Model {
        let mut restored = 0;
        let marker = doc.marker.unwrap_or(usize::MAX);
        let ctx = context_digest(doc, &vals);
+        // Each feature's component, for `Document::legacy_body_component` on every body after
+        // every feature without searching the timeline for each (the first feature with an id).
+        let mut feature_component: std::collections::HashMap<u64, u64> = std::collections::HashMap::with_capacity(doc.features.len());
+        for f in &doc.features {
+            feature_component.entry(f.id).or_insert(f.component);
+        }
        let watched = crate::progress::begin(doc.features.len());
        for (i, f) in doc.features.iter().enumerate() {
            let rolled_back = i >= marker;
@@ -1048,17 +1131,18 @@ impl Model {
                    FeatureKind::Hole { direction, points: None, .. } => direction.normalized(),
                    _ => None,
                };
+                let fst = face_point_state(doc, &state, &f.kind, f.component);
                for (k, (p, n)) in g.kind.face_points_mut().into_iter().zip(&f.face_names).enumerate() {
                    if n.is_empty() {
                        continue;
                    }
-                    match crate::naming::locate_face(&state, n, *p) {
+                    match crate::naming::locate_face(&fst, n, *p) {
                        Some(hit) => {
                            if let Some(note) = hit.note(n) {
                                notes.push(note);
                            }
                            match (k, hole_axis) {
-                                (0, Some(axis)) => match hit.along(&state, *p, axis) {
+                                (0, Some(axis)) => match hit.along(&fst, *p, axis) {
                                    Some(q) => *p = q,
                                    // The place still lies on the face (the axis may run along it).
                                    None if hit.on_point => {}
@@ -1110,7 +1194,10 @@ impl Model {
                    next.stamp(&state, f, key, mats);
                    for b in &mut next.bodies {
                        if !b.transferred {
-                            b.component = doc.legacy_body_component(&b.name, b.feature);
+                            b.component = match doc.body_components.get(&b.name) {
+                                Some(c) => *c,
+                                None => feature_component.get(&b.feature).copied().unwrap_or(0),
+                            };
                        }
                    }
                    state = Arc::new(next);
@@ -1728,6 +1815,82 @@ fn hole_on_surface(st: &ModelState, p: Vec3, dir: Vec3) -> Vec3 {
    best.unwrap_or(p)
 }

+/// The faces of the model near `p`: for each, how far `p` is from it, the outward normal there
+/// (the surface's own normal for planes, cylinders and spheres, turned the way the face looks out
+/// of its body; the nearest mesh facet's otherwise) and, for a plane, how far `p` is from the
+/// plane itself. Only faces within `reach` of `p`, nearest first.
+fn faces_through(st: &ModelState, p: Vec3, reach: f64) -> Vec<(f64, Vec3, Option<f64>)> {
+    let mut out: Vec<(f64, Vec3, Option<f64>)> = Vec::new();
+    for b in st.bodies.iter().filter(|b| !b.body.is_mesh()) {
+        let m = b.mesh();
+        // The nearest facet of each face of this body.
+        let mut near: BTreeMap<u32, (f64, Vec3)> = BTreeMap::new();
+        for (t, f) in m.triangles.iter().zip(&m.tri_face) {
+            let Some([a, bb, c]) = m.tri(t) else { continue };
+            let d = crate::appearance::closest_on_triangle(p, a, bb, c).dist(p);
+            let Some(n) = (bb - a).cross(c - a).normalized() else { continue };
+            if d <= reach && near.get(f).is_none_or(|(x, _)| d < *x) {
+                near.insert(*f, (d, n));
+            }
+        }
+        for (f, (d, facet)) in near {
+            let (exact, off) = match kernel::face_surface(&b.body, f as usize) {
+                Some(kernel::FaceSurface::Plane { normal, point }) => (Some(normal), Some((p - point).dot(normal).abs())),
+                Some(kernel::FaceSurface::Cylinder { origin, axis, .. }) => {
+                    let v = p - origin;
+                    ((v - axis * v.dot(axis)).normalized(), None)
+                }
+                Some(kernel::FaceSurface::Sphere { center, .. }) => ((p - center).normalized(), None),
+                _ => (None, None),
+            };
+            let n = match exact {
+                Some(n) if n.dot(facet) < 0.0 => -n,
+                Some(n) => n,
+                None => facet,
+            };
+            out.push((d, n, off));
+        }
+    }
+    out.sort_by(|a, b| a.0.total_cmp(&b.0));
+    out
+}
+
+/// The way a hole placed at `p` drills: into the material, against the outward normal of the
+/// face `p` lies on. A point on no face (a planar face's centroid outside it, say) takes the
+/// nearest planar face whose plane it lies in, else the face nearest it within its body's pick
+/// tolerance. None when no face is near.
+pub fn hole_direction_at(st: &ModelState, p: Vec3) -> Option<Vec3> {
+    let size = st.bodies.iter().map(|b| b.body.size()).fold(1.0, f64::max);
+    let faces = faces_through(st, p, f64::INFINITY);
+    if let Some((d, n, _)) = faces.first()
+        && *d <= size * 1e-4
+    {
+        return Some(-*n);
+    }
+    if let Some((_, n, _)) = faces.iter().find(|(_, _, off)| off.is_some_and(|o| o <= size * 1e-4)) {
+        return Some(-*n);
+    }
+    let reach = st.bodies.iter().map(crate::appearance::pick_tolerance).fold(0.0, f64::max);
+    faces.first().filter(|(d, _, _)| *d <= reach).map(|(_, n, _)| -*n)
+}
+
+/// A hole placed on a face drills into the material: when its direction leaves every face it
+/// starts on (as designs saved before format 18 can say: their direction was taken from any face
+/// whose plane passed near the point, such as the other side of a thin plate or a face of another
+/// body at the same height), it is mirrored in the face it starts on, so it goes in at the same
+/// angle. A direction that enters a face there, or a spot on no face, is kept.
+fn hole_dir_into_face(st: &ModelState, p: Vec3, dir: Vec3) -> Vec3 {
+    let size = st.bodies.iter().map(|b| b.body.size()).fold(1.0, f64::max);
+    let faces = faces_through(st, p, size * 1e-5);
+    if faces.is_empty() || faces.iter().any(|(_, n, _)| n.dot(dir) < -1e-9) {
+        return dir;
+    }
+    match faces.iter().map(|(_, n, _)| *n).max_by(|a, b| a.dot(dir).total_cmp(&b.dot(dir))) {
+        Some(n) if n.dot(dir) > 1e-9 => (dir - n * (2.0 * n.dot(dir))).normalized().unwrap_or(dir),
+        _ => dir,
+    }
+}
+
 /// Where a picked edge sat in its body: its direction (zero for curved edges) and the body's
 /// bounding box at the time.
 #[derive(Clone, Debug, PartialEq, Serialize, serde::Deserialize)]
@@ -1895,6 +2058,49 @@ pub(crate) fn revolve_axis(ss: &SolvedSketch, axis: &AxisRef) -> Result<(Vec2, V
    }
 }

+/// Whether a drill from `p` along `d` reaches material: it starts into a body (`touches`), or,
+/// when `ahead` is set, a body lies further along `d`. A spot exactly on a surface counts only
+/// when the drill enters there, not when it leaves.
+fn hole_reaches(st: &ModelState, p: Vec3, d: Vec3, ahead: bool) -> bool {
+    let size = st.bodies.iter().map(|b| b.body.size()).fold(1.0, f64::max);
+    let eps = size * 1e-6;
+    let q = p + d * eps;
+    st.bodies.iter().any(|b| {
+        let m = b.mesh();
+        m.contains(q) || (ahead && m.raycast(q, d).is_some())
+    })
+}
+
+/// The side hole centres on a sketch drill to: into the material, whichever way the sketch plane
+/// faces. Material that touches a spot (the drill starts in it) wins over material further away,
+/// so a sketch on a plate's face drills that plate rather than one across an air gap: `-n` (away
+/// from the plane's normal) if any spot touches material that way, else `+n` if any spot touches
+/// material that way. With no touching on either side it goes by the nearest body ahead: `-n` if
+/// any spot has a body ahead that way, else `+n` if any has, else `-n`.
+/// The way holes at these points of a sketch drill (see [`sketch_hole_dir`]), flipped or not.
+/// None when the sketch or a point is not there.
+pub fn sketch_hole_direction(st: &ModelState, sketch: u64, ids: &[String], flip: bool) -> Option<Vec3> {
+    let ss = st.sketch(sketch)?;
+    let spots: Vec<Vec3> =
+        ids.iter().map(|id| ss.sketch.points.iter().find(|p| &p.id == id).map(|p| ss.plane.to_world(p.pos))).collect::<Option<_>>()?;
+    let dir = sketch_hole_dir(st, &spots, ss.plane.normal());
+    Some(if flip { -dir } else { dir })
+}
+
+fn sketch_hole_dir(st: &ModelState, spots: &[Vec3], n: Vec3) -> Vec3 {
+    let down = -n;
+    let any = |d: Vec3, ahead: bool| spots.iter().any(|p| hole_reaches(st, *p, d, ahead));
+    if any(down, false) {
+        down
+    } else if any(n, false) {
+        n
+    } else if any(down, true) || !any(n, true) {
+        down
+    } else {
+        n
+    }
+}
+
 /// Where a hole feature drills (each on the surface) and in which direction: at its sketch
 /// points perpendicular to the sketch (into the material), else at its position.
 fn hole_spots(st: &ModelState, f: &Feature) -> Result<(Vec<Vec3>, Vec3)> {
@@ -1907,9 +2113,16 @@ fn hole_spots(st: &ModelState, f: &Feature) -> Result<(Vec<Vec3>, Vec3)> {
                let p = ss.sketch.points.iter().find(|p| &p.id == id).ok_or_else(|| DocError::Unknown(format!("sketch point `{id}`")))?;
                v.push(ss.plane.to_world(p.pos));
            }
-            (v, -ss.plane.normal())
+            let dir = sketch_hole_dir(st, &v, ss.plane.normal());
+            let dir = if sp.flip { -dir } else { dir };
+            (v, dir)
+        }
+        None => {
+            let dir = direction.normalized().ok_or_else(|| DocError::Invalid("hole direction".into()))?;
+            let at = hole_on_surface(st, *position, dir);
+            let dir = hole_dir_into_face(st, at, dir);
+            return Ok((vec![hole_on_surface(st, at, dir)], dir));
        }
-        None => (vec![*position], direction.normalized().ok_or_else(|| DocError::Invalid("hole direction".into()))?),
    };
    if spots.is_empty() || spots.len() > 10_000 {
        return Err(DocError::Invalid("a hole needs 1…10000 points".into()));
@@ -1947,9 +2160,14 @@ fn hole_spots_raw(st: &ModelState, f: &Feature) -> Result<(Vec<Vec3>, Vec3)> {
            let ss = st.sketch(sp.sketch).ok_or_else(|| DocError::Unknown(format!("sketch {}", sp.sketch)))?;
            let v: Vec<Vec3> =
                sp.ids.iter().filter_map(|id| ss.sketch.points.iter().find(|p| &p.id == id)).map(|p| ss.plane.to_world(p.pos)).take(10_000).collect();
-            Ok((v, -ss.plane.normal()))
+            let dir = sketch_hole_dir(st, &v, ss.plane.normal());
+            let dir = if sp.flip { -dir } else { dir };
+            Ok((v, dir))
+        }
+        None => {
+            let dir = direction.normalized().ok_or_else(|| DocError::Invalid("hole direction".into()))?;
+            Ok((vec![*position], hole_dir_into_face(st, hole_on_surface(st, *position, dir), dir)))
        }
-        None => Ok((vec![*position], direction.normalized().ok_or_else(|| DocError::Invalid("hole direction".into()))?)),
    }
 }

@@ -1983,9 +2201,21 @@ fn sheet_hole_cut(st: &mut ModelState, f: &Feature, tools: &[(Traced, Option<mor
    for (tool, prism) in tools {
        let tool = &tool.body;
        let done = match prism {
-            Some(prism) => more::sheet_primitive_cut(f, st, tool, *prism, Operation::Cut)?,
+            Some(prism) => match more::sheet_primitive_cut(f, st, tool, *prism, Operation::Cut, true) {
+                Ok(done) => done,
+                // Drilled along a panel (into a rim) the hole is no flat cut-out: a bore of
+                // that panel, when it stays inside it.
+                Err(e) => match more::sheet_bore_cut(f, st, *prism)? {
+                    Some(done) => done,
+                    None => return Err(e),
+                },
+            },
            None => Vec::new(),
        };
+        let done = match (done.is_empty(), prism) {
+            (true, Some(prism)) => more::sheet_bore_cut(f, st, *prism)?.unwrap_or_default(),
+            _ => done,
+        };
        if done.is_empty() {
            let mut meets = false;
            for sheet in &st.sheets {
@@ -2265,6 +2495,9 @@ fn centered_extrude(plane: &Plane, region: &Region2, start: f64, end: f64, sketc
        .collect()
 }

+/// How far apart (mm) profiles must stay for their extruded tools to be cut as one.
+const APART_GAP: f64 = 1e-3;
+
 /// The tool bodies a feature adds or removes (extrude, revolve, primitives), in the current state.
 fn feature_tools_with_constructor(
    doc: &Document,
@@ -2283,15 +2516,22 @@ fn feature_tools_with_constructor(
            )?;
            let regions = solidcraft_sketch::merge_regions(&select_profiles(&ss, profiles)?);
            // From / To Object: where the face or point lies along the normal, measured over the
-            // middle of the profiles.
+            // middle of the profiles. The points are in this feature's component frame, so the
+            // model is seen from there: a target in another, moved component where it is shown.
            let n = ss.plane.normal();
+            let tst =
+                if extent.to.is_some() || extent.from.is_some() { state_in_frame(doc, st, f.component) } else { std::borrow::Cow::Borrowed(st) };
+            // The face names follow `face_points`: To, then From.
+            let name = |k: usize| f.face_names.get(k).map(String::as_str);
+            let (to_name, from_name) = if extent.to.is_some() { (name(0), name(1)) } else { (None, name(0)) };
+            let to_face = extent.to.and_then(|p| object_face(&tst, to_name, p));
            let centre = {
                let pts: Vec<Vec2> = regions.iter().flat_map(|r| r.outer.polyline(1e-2)).collect();
                let c = pts.iter().fold(Vec2::default(), |a, p| a + *p) * (1.0 / pts.len().max(1) as f64);
                ss.plane.to_world(c)
            };
            let from = match extent.from {
-                Some(p) => object_height(st, &ss.plane, centre, p),
+                Some(p) => height_at(&tst, object_face(&tst, from_name, p), &ss.plane, centre, p),
                None => 0.0,
            };
            let d = match extent.to {
@@ -2300,7 +2540,7 @@ fn feature_tools_with_constructor(
                        Some(e) => val(vals, e, Kind::Length)?,
                        None => 0.0,
                    };
-                    let h = object_height(st, &ss.plane, centre, p);
+                    let h = height_at(&tst, to_face, &ss.plane, centre, p);
                    let start = from + extent.start_offset.as_deref().map(|e| val(vals, e, Kind::Length)).transpose()?.unwrap_or(0.0);
                    // Past the face by the offset, in the direction travelled.
                    let to = h + if h >= start { off } else { -off };
@@ -2344,9 +2584,9 @@ fn feature_tools_with_constructor(
            let (mut lo, mut hi) = if a <= b { (a, b) } else { (b, a) };
            // To a curved (or slanted) face: run right through the target body, then keep what
            // lies before its surface (the tool less the body, the piece at the start).
-            let curved = extent.to.and_then(|p| curved_target(st, n, p));
+            let curved = curved_face(&tst, to_face, Some(n));
            if let Some(bi) = curved
-                && let Some(tb) = st.bodies.get(bi)
+                && let Some(tb) = tst.bodies.get(bi)
            {
                let m = tb.mesh();
                let hs: Vec<f64> = m.positions.iter().map(|q| (*q - ss.plane.origin).dot(n) - off).collect();
@@ -2359,6 +2599,8 @@ fn feature_tools_with_constructor(
            }
            let mut tools = Vec::new();
            let mut untrimmed = extent.to.is_none() && extent.from.is_none() && !extent.through_all;
+            // The footprint of each tool in the sketch: a tool lies in the prism over it.
+            let mut footprints = Vec::with_capacity(regions.len());
            for r in &regions {
                if *operation == Operation::Join {
                    let exact = centered_extrude(&ss.plane, r, lo + off, hi + off, Some(&ss))?;
@@ -2371,6 +2613,7 @@ fn feature_tools_with_constructor(
                        // Preserve a whole touching face: extending into a chamfer replaces
                        // the sewable seam with a coincident curved intersection.
                        tools.extend(exact);
+                        footprints.push(r.clone());
                        continue;
                    }
                }
@@ -2380,8 +2623,22 @@ fn feature_tools_with_constructor(
                let r = grow_profile_for_coplanar(st, r, *operation, targets, &probe);
                untrimmed &= l2 == lo + off && h2 == hi + off && &r == original;
                tools.extend(centered_extrude(&ss.plane, &r, l2, h2, Some(&ss))?);
+                footprints.push(r);
            }
-            if let Some(tb) = curved.and_then(|bi| st.bodies.get(bi)) {
+            // A cut by profiles apart in the sketch (the letters of a text): each tool lies in the
+            // prism over its footprint, so the tools are apart too (whatever their heights, and
+            // trimmed or not). The body is then cut once by all of them rather than once per
+            // profile, each cut working on a body grown by the one before.
+            // (Sheet metal keeps its own way of cutting, tool by tool, to keep its flat pattern.)
+            let sheet =
+                if targets.is_empty() { !st.sheets.is_empty() } else { targets.iter().any(|t| st.sheets.iter().any(|sheet| &sheet.body == t)) };
+            if *operation == Operation::Cut && !sheet && tools.len() > 1 && regions_apart(&footprints, APART_GAP) {
+                let bodies: Vec<Body> = tools.iter().map(|t| t.body.clone()).collect();
+                if let Ok(Some(one)) = kernel::join_apart(&bodies) {
+                    tools = vec![Traced::step(one, &tools.iter().collect::<Vec<_>>())];
+                }
+            }
+            if let Some(tb) = curved.and_then(|bi| tst.bodies.get(bi)) {
                let start = if hi > 0.0 { lo + off } else { hi + off };
                tools = trim_to_body(tools, tb, |q: Vec3| ((q - ss.plane.origin).dot(n) - start).abs())?;
            }
@@ -2439,13 +2696,15 @@ fn feature_tools_with_constructor(
            )?;
            let regions = solidcraft_sketch::merge_regions(&select_profiles(&ss, profiles)?);
            let (o, d) = revolve_axis(&ss, axis)?;
+            // To Object is in this feature's component frame: the model as seen from there.
+            let tst = if to.is_some() { state_in_frame(doc, st, f.component) } else { std::borrow::Cow::Borrowed(st) };
            let angles = if to.is_some() {
                (0.0, None)
            } else {
                (val(vals, angle, Kind::Angle)?, angle2.as_ref().map(|a| val(vals, a, Kind::Angle)).transpose()?)
            };
            let extent = revolve_extent_with_convention(
-                st,
+                &tst,
                &ss.plane,
                &regions,
                (ss.plane.to_world(o), ss.plane.dir_to_world(d)),
@@ -2460,7 +2719,7 @@ fn feature_tools_with_constructor(
                .map(|r| {
                    if *convention == crate::RevolveConvention::SketchNormal && to.is_some() {
                        revolve_extent_with_convention(
-                            st,
+                            &tst,
                            &ss.plane,
                            std::slice::from_ref(r),
                            (ss.plane.to_world(o), ss.plane.dir_to_world(d)),
@@ -2501,8 +2760,8 @@ fn feature_tools_with_constructor(
                .collect::<Result<Vec<_>>>()?;
            // To a curved face: turn past the whole target body, then cut back to its surface
            // (the piece that starts at the profile).
-            let curved = to.and_then(|p| curved_target_any(st, p));
-            let curved_body = curved.and_then(|bi| st.bodies.get(bi));
+            let curved = curved_face(&tst, to.and_then(|p| object_face(&tst, f.face_names.first().map(String::as_str), p)), None);
+            let curved_body = curved.and_then(|bi| tst.bodies.get(bi));
            // Each region's body: its sides named by the sketch curves, its caps start and end.
            let tool = |r: &Region2, body: Body, built: Option<&Body>| crate::lineage::ProfileRoles::swept(Some(&ss), Some(r)).tool(body, built);
            let build_curved = |regions: &[Region2], angle_axis: Vec3, tb: &ModelBody| -> Result<Vec<Traced>> {
@@ -3214,9 +3473,14 @@ mod surface;
 /// there if it is planar and parallel (its plane), else where a ray from `centre` along the
 /// normal meets the body there, else the point itself.
 pub fn object_height(st: &ModelState, plane: &Plane, centre: Vec3, p: Vec3) -> f64 {
+    height_at(st, face_at(st, p), plane, centre, p)
+}
+
+/// [`object_height`] of the point `p` on `face` (`(body index, face index)`, see [`object_face`]).
+fn height_at(st: &ModelState, face: Option<(usize, usize)>, plane: &Plane, centre: Vec3, p: Vec3) -> f64 {
    let n = plane.normal();
    let h = |q: Vec3| (q - plane.origin).dot(n);
-    let Some((bi, fi)) = face_at(st, p) else { return h(p) };
+    let Some((bi, fi)) = face else { return h(p) };
    let Some(b) = st.bodies.get(bi) else { return h(p) };
    let tol = (b.body.size() * 1e-3).max(1e-3);
    let Ok(faces) = b.body.faces(tol) else { return h(p) };
@@ -3254,24 +3518,37 @@ fn face_at(st: &ModelState, p: Vec3) -> Option<(usize, usize)> {
        .map(|(_, bi, fi)| (bi, fi))
 }

-/// The body at `p` when the face there is not a plane square to `n` (To Object must then
-/// follow the face's shape).
-fn curved_target(st: &ModelState, n: Vec3, p: Vec3) -> Option<usize> {
-    let (bi, fi) = face_at(st, p)?;
+/// The face a To / From Object point stands for, `(body index, face index)`: the face its
+/// stored `name` finds when the point lies on it (evaluation has moved the point onto its named
+/// face), else the nearest face at the point. The name settles a tie: in an assembly a part of
+/// another component may rest on the target and touch it at the point.
+fn object_face(st: &ModelState, name: Option<&str>, p: Vec3) -> Option<(usize, usize)> {
+    if let Some(n) = name.filter(|n| !n.is_empty())
+        && let Some(hit) = crate::naming::locate_face(st, n, p)
+        && hit.on_point
+    {
+        return Some((hit.body, hit.face));
+    }
+    face_at(st, p)
+}
+
+/// The body of `face` when that face is not a plane (with `n`: not a plane square to `n`), so To
+/// Object must follow its shape.
+fn curved_face(st: &ModelState, face: Option<(usize, usize)>, n: Option<Vec3>) -> Option<usize> {
+    let (bi, fi) = face?;
    let b = st.bodies.get(bi)?;
    let tol = (b.body.size() * 1e-3).max(1e-3);
-    let planar =
-        b.body.faces(tol).ok()?.into_iter().find(|f| f.index == fi).and_then(|f| f.plane_normal).is_some_and(|fnrm| fnrm.cross(n).len() < 1e-6);
+    let normal = b.body.faces(tol).ok()?.into_iter().find(|f| f.index == fi).map(|f| f.plane_normal);
+    let planar = match n {
+        Some(n) => normal.flatten().is_some_and(|fnrm| fnrm.cross(n).len() < 1e-6),
+        None => normal.is_some_and(|fnrm| fnrm.is_some()),
+    };
    (!planar).then_some(bi)
 }

 /// The body at `p` when the face there is not planar.
 fn curved_target_any(st: &ModelState, p: Vec3) -> Option<usize> {
-    let (bi, fi) = face_at(st, p)?;
-    let b = st.bodies.get(bi)?;
-    let tol = (b.body.size() * 1e-3).max(1e-3);
-    let planar = b.body.faces(tol).ok()?.into_iter().find(|f| f.index == fi).is_some_and(|f| f.plane_normal.is_some());
-    (!planar).then_some(bi)
+    curved_face(st, face_at(st, p), None)
 }

 /// Tools run through `target`, cut back to its surface: each tool less the body, keeping the
@@ -3516,7 +3793,13 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
        | FeatureKind::Thicken { .. }
        | FeatureKind::SurfaceTrim { .. }
        | FeatureKind::SurfaceExtend { .. }
-        | FeatureKind::SurfaceExtrude { .. } => surface::eval(doc, vals, f, st),
+        | FeatureKind::SurfaceExtrude { .. }
+        | FeatureKind::Unstitch { .. }
+        | FeatureKind::ReverseNormal { .. }
+        | FeatureKind::SurfaceRevolve { .. }
+        | FeatureKind::SurfaceSweep { .. }
+        | FeatureKind::SurfaceLoft { .. }
+        | FeatureKind::SurfaceOffset { .. } => surface::eval(doc, vals, f, st),
        FeatureKind::Emboss { .. }
        | FeatureKind::Rib { .. }
        | FeatureKind::ReplaceFace { .. }
@@ -3915,6 +4198,7 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
            let input = mb.traced();
            // The blended body, and the lineage of what the last blend started from.
            let (nb, from) = match &f.kind {
+                FeatureKind::Fillet { style: crate::FilletStyle::Curvature, .. } => (kernel::fillet_g2(&mb.body, &edges, r)?, input),
                FeatureKind::Fillet { style: crate::FilletStyle::Chord, .. } => (kernel::fillet_chord(&mb.body, &edges, r)?, input),
                FeatureKind::Fillet { style: crate::FilletStyle::Variable { radius2, start, mid, smooth }, .. } => {
                    let r2 = val(vals, radius2, Kind::Length)?;
@@ -3968,7 +4252,7 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
            let corner = point(vals, corner)?;
            let b = kernel::box_solid(corner, corner + s)?;
            let b = if matches!(operation, Operation::NewBody | Operation::Join) { b.with_box_certificate(f.id)? } else { b };
-            let handled = more::sheet_primitive_cut(f, st, &b, more::PrimitivePrism::Box { lo: corner, hi: corner + s }, *operation)?;
+            let handled = more::sheet_primitive_cut(f, st, &b, more::PrimitivePrism::Box { lo: corner, hi: corner + s }, *operation, false)?;
            let tools = vec![crate::lineage::box_tool(b)];
            if !handled.is_empty() {
                return apply_beside_sheet_cut(st, f, tools, *operation, &[], &handled);
@@ -3980,7 +4264,7 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
            let b = kernel::cylinder(base, *axis, radius, height)?;
            let b = if matches!(operation, Operation::NewBody | Operation::Join) { b.with_cylinder_certificate(f.id)? } else { b };
            let prism = more::PrimitivePrism::Cylinder { base, axis: *axis, radius, height };
-            let handled = more::sheet_primitive_cut(f, st, &b, prism, *operation)?;
+            let handled = more::sheet_primitive_cut(f, st, &b, prism, *operation, false)?;
            let tools = vec![crate::lineage::cylinder_tool(b)];
            if !handled.is_empty() {
                return apply_beside_sheet_cut(st, f, tools, *operation, &[], &handled);
@@ -4051,7 +4335,7 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
            }
            Ok(())
        }
-        FeatureKind::DeleteFace { faces, body } => {
+        FeatureKind::DeleteFace { faces, body, heal } => {
            let i = body_at(st, body, faces)?;
            let Some(mb) = st.bodies.get(i).cloned() else { return Err(DocError::Invalid("body".into())) };
            let mut picked: Vec<usize> = Vec::new();
@@ -4063,7 +4347,8 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
                }
            }
            let all = kernel::with_same_surface(&mb.body, &picked);
-            let nb = Traced::step(kernel::delete_faces(&mb.body, &all)?, &[&mb.traced()]);
+            let left = if *heal { kernel::delete_faces(&mb.body, &all)? } else { kernel::remove_faces(&mb.body, &all)? };
+            let nb = Traced::step(left, &[&mb.traced()]);
            if let Some(slot) = st.bodies.get_mut(i) {
                *slot = ModelBody::traced_new(mb.name, nb, mb.feature);
            }
@@ -4134,9 +4419,12 @@ fn eval_feature(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature, st:
        FeatureKind::Import { step, .. } => {
            let imp = kernel::step_import_shared(step)?;
            let digest = crate::config::payload_digest(step);
+            // Files from board and assembly tools give thousands of bodies the same name: name
+            // them from a set, not by searching the bodies for every candidate (cubic).
+            let mut names = BodyNames::new(st);
            for (k, b) in imp.bodies.iter().enumerate() {
                let base = f.body_names.get(k).filter(|n| !n.trim().is_empty()).unwrap_or(&b.name);
-                let name = unique_body_name(st, base);
+                let name = names.unique(base);
                let b = crate::lineage::numbered_tool(b.body.clone().with_import_certificate(&digest, f.id)?);
                st.bodies.push(ModelBody::traced_new(name, b, f.id));
            }
@@ -4169,6 +4457,35 @@ fn mesh_bodies(meshes: &[crate::MeshData]) -> Result<Vec<(String, Body)>> {
    Ok(out)
 }

+/// [`unique_body_name`] for many bodies in a row: the same names, in time linear in the bodies.
+struct BodyNames {
+    taken: std::collections::HashSet<String>,
+    /// The next suffix worth trying for each base (smaller ones are all taken).
+    next: std::collections::HashMap<String, usize>,
+}
+
+impl BodyNames {
+    fn new(st: &ModelState) -> Self {
+        BodyNames { taken: st.bodies.iter().map(|b| b.name.clone()).collect(), next: std::collections::HashMap::new() }
+    }
+    fn unique(&mut self, base: &str) -> String {
+        let base = if base.trim().is_empty() { "Body" } else { base.trim() };
+        if self.taken.insert(base.to_string()) {
+            return base.to_string();
+        }
+        let mut i = self.next.get(base).copied().unwrap_or(2);
+        let name = loop {
+            let candidate = format!("{base} ({i})");
+            i += 1;
+            if self.taken.insert(candidate.clone()) {
+                break candidate;
+            }
+        };
+        self.next.insert(base.to_string(), i);
+        name
+    }
+}
+
 /// `base`, or `base (2)`, `base (3)`… if a body already has that name.
 fn unique_body_name(st: &ModelState, base: &str) -> String {
    let base = if base.trim().is_empty() { "Body" } else { base.trim() };
@@ -4196,6 +4513,44 @@ pub fn state_in_frame<'a>(doc: &Document, st: &'a ModelState, comp: u64) -> std:
    state_in_frame_at(doc, st, comp, doc.component_transform(comp))
 }

+/// The model a feature's face points (`FeatureKind::face_points`) are found in. Extrude's To /
+/// From and Revolve's To place geometry, so they are kept in the feature's own component frame
+/// (`comp`): the model as that component sees it, a target in another, moved component where it
+/// is shown (#928). Other face points are picks, kept in the frame of the body they lie on: the
+/// model itself.
+pub fn face_point_state<'a>(doc: &Document, st: &'a ModelState, kind: &FeatureKind, comp: u64) -> std::borrow::Cow<'a, ModelState> {
+    match kind {
+        FeatureKind::Extrude { .. } | FeatureKind::Revolve { .. } => state_in_frame(doc, st, comp),
+        _ => std::borrow::Cow::Borrowed(st),
+    }
+}
+
+/// The names of the faces a feature's face points lie on (empty where none), found in
+/// [`face_point_state`]. A To / From point is named after the nearest face over every body, the
+/// one `object_height` resolves it to, not the first body with a face within tolerance: a part
+/// resting a hair from the picked face would otherwise take its name.
+pub fn face_point_names(doc: &Document, st: &ModelState, kind: &FeatureKind, comp: u64) -> Vec<String> {
+    let pts = kind.face_points();
+    if !matches!(kind, FeatureKind::Extrude { .. } | FeatureKind::Revolve { .. }) {
+        return crate::naming::face_names_at(st, &pts);
+    }
+    let fst = face_point_state(doc, st, kind, comp);
+    pts.iter()
+        .map(|p| {
+            fst.bodies
+                .iter()
+                .filter(|b| !b.body.is_mesh())
+                .filter_map(|b| {
+                    let (d, fi) = crate::appearance::nearest_face(b, *p)?;
+                    (d <= (b.body.size() * 1e-3).max(1e-3)).then_some((d, b, fi))
+                })
+                .min_by(|a, b| a.0.total_cmp(&b.0))
+                .and_then(|(_, b, fi)| crate::naming::face_names(b).get(fi).cloned())
+                .unwrap_or_default()
+        })
+        .collect()
+}
+
 /// As `state_in_frame`, using the exact active placement for its shared source geometry.
 pub fn state_in_frame_at<'a>(doc: &Document, st: &'a ModelState, comp: u64, frame: Mat) -> std::borrow::Cow<'a, ModelState> {
    use std::borrow::Cow;
@@ -4469,3 +4824,33 @@ mod chain_tests {
        assert_eq!(faces.len(), 3, "{faces:?}");
    }
 }
+
+#[cfg(test)]
+mod body_name_tests {
+    use super::*;
+
+    /// Imported bodies get the names one-at-a-time naming gives them, in time linear in the
+    /// bodies: a board file with thousands of same-named parts once took minutes (#883).
+    #[test]
+    fn many_same_named_bodies_are_named_in_linear_time() {
+        let mut st = ModelState::default();
+        let body = kernel::box_solid(Vec3::ZERO, Vec3::new(1.0, 1.0, 1.0)).unwrap();
+        for name in ["R", "R (3)", "C"] {
+            st.bodies.push(ModelBody::new(name.into(), body.clone(), 1));
+        }
+        // The same names as asking the bodies one at a time.
+        let mut names = BodyNames::new(&st);
+        let mut slow = st.clone();
+        for base in ["R", "R", "C", " ", "Body", "R", "R (2)", "X"] {
+            let expected = unique_body_name(&slow, base);
+            assert_eq!(names.unique(base), expected);
+            slow.bodies.push(ModelBody::new(expected, body.clone(), 2));
+        }
+        // 50,000 parts named alike: milliseconds (one-at-a-time naming would take hours).
+        let began = std::time::Instant::now();
+        let mut names = BodyNames::new(&ModelState::default());
+        let last = (0..50_000).map(|_| names.unique("R_0603")).last().unwrap();
+        assert_eq!(last, "R_0603 (50000)");
+        assert!(began.elapsed() < std::time::Duration::from_secs(5), "{:?}", began.elapsed());
+    }
+}
@@ -345,9 +345,12 @@ fn on_sheet_material(st: &ModelState, i: usize, p: Vec3) -> bool {
    if mesh.triangles.is_empty() {
        return true;
    }
-    // Twice the display mesh's chord tolerance (see `ModelBody::mesh`).
+    // Twice the display mesh's chord tolerance (see `ModelBody::mesh`), and a quarter of the
+    // thickness: on a large thin sheet the first steps from a point on its face clean through
+    // it, so a point on the face would touch nothing (#685).
    let step = 2.0 * (mb.body.size() * 1e-3).max(1e-3);
-    let offsets = [-step, 0.0, step];
+    let thin = st.sheets.get(i).map_or(step, |sh| (sh.t * 0.25).min(step));
+    let offsets = [-step, -thin, 0.0, thin, step];
    offsets.iter().any(|&dx| offsets.iter().any(|&dy| offsets.iter().any(|&dz| mesh.contains(p + Vec3::new(dx, dy, dz)))))
 }

@@ -593,13 +596,18 @@ pub(super) fn sheet_eval(
            let ds: Vec<f64> = mesh.positions.iter().map(|p| (*p - *face).dot(n)).collect();
            let (lo, hi) = (ds.iter().cloned().fold(f64::MAX, f64::min), ds.iter().cloned().fold(f64::MIN, f64::max));
            let t = hi - lo;
-            // The face outline: boundary edges of the triangles on that face's plane.
+            // The face outline: boundary edges of the triangles on that face's plane, where it runs
+            // along a round wall an arc of the wall's circle (not chords: the plate check below
+            // compares its area with the exact volume).
            let plane = Plane::from_normal(*face + n * lo, n * -1.0).ok_or_else(|| DocError::Invalid("face".into()))?;
-            let mut loops = face_loops(&mesh, &plane, *face, n, lo, tol);
-            loops.sort_by(|a, b| poly_area(b).abs().total_cmp(&poly_area(a).abs()));
+            let mut walls = std::collections::HashMap::new();
+            let mut wall = |f: u32| *walls.entry(f).or_insert_with(|| round_wall(&mb.body, &plane, n, f));
+            let mut loops: Vec<Loop2> =
+                face_outline(&mesh, &plane, *face, n, lo, tol).iter().map(|l| outline_loop(l, &mut wall, tol * 1e-2)).collect();
+            loops.sort_by(|a, b| b.signed_area().abs().total_cmp(&a.signed_area().abs()));
            let mut it = loops.into_iter();
-            let outer = Loop2::polygon(&it.next().ok_or_else(|| DocError::Invalid("no outline on that face".into()))?).ccw();
-            let region = Region2 { outer, holes: it.map(|l| Loop2::polygon(&l).ccw().reversed()).collect() };
+            let outer = it.next().ok_or_else(|| DocError::Invalid("no outline on that face".into()))?.ccw();
+            let region = Region2 { outer, holes: it.map(|l| l.ccw().reversed()).collect() };
            let area = region.area().abs();
            let vol = kernel::measure(&mb.body)?.volume;
            if (area * t - vol).abs() > 1e-3 * vol.max(1.0) {
@@ -726,9 +734,17 @@ fn any_eligible_sheet(f: &Feature, st: &ModelState, targets: &[String]) -> bool

 /// A Box or Cylinder cut (or intersect) whose tool is a straight prism along the normal of
 /// the sheet it meets: machined like the equivalent extrude of its footprint, so the sheet
-/// keeps it as a flat cut-out or pocket. Returns the sheet bodies it handled; none when the
+/// keeps it as a flat cut-out or pocket. A hole's drill (`drill`) may also be square to a
+/// folded panel of the sheet, a flange's. Returns the sheet bodies it handled; none when the
 /// primitive is not such a prism (the generic preflight then refuses real 3D machining).
-pub(super) fn sheet_primitive_cut(f: &Feature, st: &mut ModelState, tool: &Body, prism: PrimitivePrism, operation: Operation) -> Result<Vec<String>> {
+pub(super) fn sheet_primitive_cut(
+    f: &Feature,
+    st: &mut ModelState,
+    tool: &Body,
+    prism: PrimitivePrism,
+    operation: Operation,
+    drill: bool,
+) -> Result<Vec<String>> {
    if !matches!(operation, Operation::Cut | Operation::Intersect) || !any_eligible_sheet(f, st, &[]) {
        return Ok(Vec::new());
    }
@@ -738,7 +754,14 @@ pub(super) fn sheet_primitive_cut(f: &Feature, st: &mut ModelState, tool: &Body,
        if let Some(mb) = st.body(&sh.body)
            && kernel::boolean(&mb.body, tool, kernel::BoolOp::Intersect)?.is_some()
        {
-            normal = Some(sh.frame.normal());
+            normal = Some(match prism {
+                PrimitivePrism::Cylinder { axis, .. }
+                    if drill && !sh.flat && Plane::from_normal(Vec3::ZERO, axis).is_some_and(|p| !sh.parallel_panels(&p).is_empty()) =>
+                {
+                    axis
+                }
+                _ => sh.frame.normal(),
+            });
            break;
        }
    }
@@ -748,6 +771,45 @@ pub(super) fn sheet_primitive_cut(f: &Feature, st: &mut ModelState, tool: &Body,
    sheet_prism_cut(f, st, &plane, std::slice::from_ref(&region), operation, &tools, &[], None, false)
 }

+/// A hole's straight drill along a panel of a sheet (into its rim), kept as a bore of each
+/// panel it meets (see [`crate::sheet::SheetBore`]), so the sheet still unfolds. Returns the
+/// sheet bodies it machined; None, with the model as it was, when the drill is not a plain
+/// cylinder or a sheet it meets can't keep it that way (it runs into a bend, or crosses a
+/// panel at an angle).
+pub(super) fn sheet_bore_cut(f: &Feature, st: &mut ModelState, prism: PrimitivePrism) -> Result<Option<Vec<String>>> {
+    let PrimitivePrism::Cylinder { base, axis, radius, height } = prism else { return Ok(None) };
+    let mut plans = Vec::new();
+    for original in &st.sheets {
+        if !sheet_eligible(f, st, &[], original) {
+            continue;
+        }
+        let mut sh = original.clone();
+        match sh.add_bore(base, axis, radius, height) {
+            Ok(true) => {}
+            Ok(false) => continue,
+            // Refused here, the hole keeps the message of the machining it was first tried as.
+            Err(DocError::Invalid(_)) => return Ok(None),
+            Err(e) => return Err(e),
+        }
+        let body = sh.solid()?;
+        plans.push((sh, body));
+    }
+    if plans.is_empty() {
+        return Ok(None);
+    }
+    let mut handled = Vec::new();
+    for (sh, body) in plans {
+        if let Some(mb) = st.bodies.iter_mut().find(|b| b.name == sh.body) {
+            replace_sheet_body(mb, body);
+        }
+        handled.push(sh.body.clone());
+        if let Some(slot) = st.sheets.iter_mut().find(|s| s.body == sh.body) {
+            *slot = sh;
+        }
+    }
+    Ok(Some(handled))
+}
+
 /// A primitive tool's exact geometry, for [`sheet_primitive_cut`].
 #[derive(Clone, Copy, Debug)]
 pub(super) enum PrimitivePrism {
@@ -950,9 +1012,13 @@ fn sheet_prism_cut(
                }
                modeled = true;
            } else if z1 > z0 {
+                // Each tool meets only the panel's cut-outs near it: arranging every one of a
+                // perforation's holes against every new hole would grow with their square (#732).
+                let near = sheet::NearHoles::new(&panel)?;
                for flat in mapped {
+                    let local = near.around(&flat)?;
                    let clipped =
-                        sheet::material_boolean(std::slice::from_ref(&panel), std::slice::from_ref(&flat), kernel::BoolOp::Intersect, &mut work)?;
+                        sheet::material_boolean(std::slice::from_ref(&local), std::slice::from_ref(&flat), kernel::BoolOp::Intersect, &mut work)?;
                    if !clipped.is_empty() && !depth_resolved {
                        return Err(DocError::Invalid(
                            "sheet machining depth is below the supported 0.000001 mm extrusion resolution; increase the layer depth".into(),
@@ -1010,50 +1076,78 @@ fn sheet_prism_cut(
 /// Outline loops (in `plane` coordinates) of the mesh triangles lying in the plane at distance
 /// `level` from `at` along `n`: the edges used by one of them only, chained.
 fn face_loops(mesh: &solidcraft_geom::Mesh, plane: &Plane, at: Vec3, n: Vec3, level: f64, tol: f64) -> Vec<Vec<Vec2>> {
-    let on: Vec<[u32; 3]> = mesh
-        .triangles
-        .iter()
-        .copied()
-        .filter(|t| t.iter().all(|k| mesh.positions.get(*k as usize).is_some_and(|p| ((*p - at).dot(n) - level).abs() < tol)))
-        .collect();
+    face_outline(mesh, plane, at, n, level, tol).into_iter().map(|l| l.into_iter().map(|(p, _)| p).collect()).collect()
+}
+
+/// [`face_loops`] with each point's B-rep face across the outline from it to the next point (the
+/// wall the outline runs along there): the face off the plane that meets both points.
+fn face_outline(mesh: &solidcraft_geom::Mesh, plane: &Plane, at: Vec3, n: Vec3, level: f64, tol: f64) -> Vec<Vec<(Vec2, Option<u32>)>> {
+    let on_plane = |t: &[u32; 3]| t.iter().all(|k| mesh.positions.get(*k as usize).is_some_and(|p| ((*p - at).dot(n) - level).abs() < tol));
+    let on: Vec<[u32; 3]> = mesh.triangles.iter().copied().filter(on_plane).collect();
    // Boundary edges by position (meshes may repeat vertices per triangle).
    let pos = |k: u32| mesh.positions.get(k as usize).copied().unwrap_or_default();
    let q = |p: Vec3| ((p.x * 1e6).round() as i64, (p.y * 1e6).round() as i64, (p.z * 1e6).round() as i64);
+    let key = |a: Vec3, b: Vec3| {
+        let (ka, kb) = (q(a), q(b));
+        (ka.min(kb), ka.max(kb))
+    };
    let mut count: std::collections::HashMap<((i64, i64, i64), (i64, i64, i64)), i32> = Default::default();
    let edges: Vec<(Vec3, Vec3)> = on.iter().flat_map(|t| [(pos(t[0]), pos(t[1])), (pos(t[1]), pos(t[2])), (pos(t[2]), pos(t[0]))]).collect();
    for (a, b) in &edges {
-        let (ka, kb) = (q(*a), q(*b));
-        *count.entry((ka.min(kb), ka.max(kb))).or_insert(0) += 1;
+        *count.entry(key(*a, *b)).or_insert(0) += 1;
    }
-    let mut boundary: Vec<(Vec3, Vec3)> = edges
-        .into_iter()
-        .filter(|(a, b)| {
-            let (ka, kb) = (q(*a), q(*b));
-            count.get(&(ka.min(kb), ka.max(kb))) == Some(&1)
-        })
-        .collect();
+    // The faces off the plane at each point on it, by position to a millionth of a millimetre
+    // either way (a neighbouring face's mesh may round a shared point differently).
+    let mut touch: std::collections::HashMap<(i64, i64, i64), Vec<u32>> = Default::default();
+    for (t, f) in mesh.triangles.iter().zip(&mesh.tri_face).filter(|(t, _)| !on_plane(t)) {
+        for p in t.iter().map(|k| pos(*k)).filter(|p| ((*p - at).dot(n) - level).abs() < tol) {
+            let faces = touch.entry(q(p)).or_default();
+            if !faces.contains(f) {
+                faces.push(*f);
+            }
+        }
+    }
+    let near = |p: Vec3| {
+        let (x, y, z) = q(p);
+        let cells = (-1..=1).flat_map(|i| (-1..=1).flat_map(move |j| (-1..=1).map(move |k| (x + i, y + j, z + k))));
+        let mut faces: Vec<u32> = cells.filter_map(|c| touch.get(&c)).flatten().copied().collect();
+        faces.sort_unstable();
+        faces.dedup();
+        faces
+    };
+    let across = |a: Vec3, b: Vec3| {
+        let at_b = near(b);
+        near(a).into_iter().find(|f| at_b.contains(f))
+    };
+    let mut boundary: Vec<(Vec3, Vec3)> = edges.into_iter().filter(|(a, b)| count.get(&key(*a, *b)) == Some(&1)).collect();
    // Chain into loops (plane coordinates).
-    let mut loops: Vec<Vec<Vec2>> = Vec::new();
+    let mut loops: Vec<Vec<(Vec2, Option<u32>)>> = Vec::new();
    for _ in 0..10_000 {
        let Some((s0, mut cur)) = boundary.pop() else { break };
-        let mut lp = vec![s0];
+        let mut lp = vec![(s0, across(s0, cur))];
        for _ in 0..boundary.len() + 1 {
            if q(cur) == q(s0) {
                break;
            }
-            lp.push(cur);
            match boundary.iter().position(|(a, _)| q(*a) == q(cur)) {
-                Some(k) => cur = boundary.remove(k).1,
-                None => break,
+                Some(k) => {
+                    let b = boundary.remove(k).1;
+                    lp.push((cur, across(cur, b)));
+                    cur = b;
+                }
+                None => {
+                    lp.push((cur, None));
+                    break;
+                }
            }
        }
-        let raw: Vec<Vec2> = lp.iter().map(|p| plane.to_local(*p)).collect();
+        let raw: Vec<(Vec2, Option<u32>)> = lp.iter().map(|(p, f)| (plane.to_local(*p), *f)).collect();
        // Drop points in the middle of straight runs.
        let m = raw.len();
-        let pts: Vec<Vec2> = (0..m)
+        let pts: Vec<(Vec2, Option<u32>)> = (0..m)
            .filter_map(|i| {
-                let (p, c, n) = (*raw.get((i + m - 1) % m)?, *raw.get(i)?, *raw.get((i + 1) % m)?);
-                ((c - p).cross(n - c).abs() > 1e-9 * (c - p).len().max(1e-9) * (n - c).len().max(1e-9)).then_some(c)
+                let (p, c, n) = (raw.get((i + m - 1) % m)?.0, *raw.get(i)?, raw.get((i + 1) % m)?.0);
+                ((c.0 - p).cross(n - c.0).abs() > 1e-9 * (c.0 - p).len().max(1e-9) * (n - c.0).len().max(1e-9)).then_some(c)
            })
            .collect();
        if pts.len() >= 3 {
@@ -1063,6 +1157,62 @@ fn face_loops(mesh: &solidcraft_geom::Mesh, plane: &Plane, at: Vec3, n: Vec3, le
    loops
 }

+/// The circle (centre in `plane` coordinates, radius) of face `f` when it is a round wall
+/// standing square on the plane: a cylinder about the plane's normal `n`.
+fn round_wall(body: &Body, plane: &Plane, n: Vec3, f: u32) -> Option<(Vec2, f64)> {
+    match kernel::face_surface(body, f as usize)? {
+        kernel::FaceSurface::Cylinder { origin, axis, radius } if axis.cross(n).len() < 1e-6 => Some((plane.to_local(origin), radius)),
+        _ => None,
+    }
+}
+
+/// A loop of [`face_outline`] as segments: each run along one round wall (`wall` gives a face's
+/// circle) is an arc of that circle, the rest stays straight. Coaxial cylinders of one radius are
+/// one wall, however many faces it comes in (many systems write a round hole's wall as two
+/// half-cylinders), so such a hole is one circle. `eps`: how far off its circle a point may be.
+fn outline_loop(pts: &[(Vec2, Option<u32>)], wall: &mut impl FnMut(u32) -> Option<(Vec2, f64)>, eps: f64) -> Loop2 {
+    use std::f64::consts::{PI, TAU};
+    let m = pts.len();
+    let point = |i: usize| pts.get(i % m).map(|x| x.0).unwrap_or_default();
+    // The circle each segment runs along: its wall's, when both its ends lie on it.
+    let circles: Vec<Option<(Vec2, f64)>> = (0..m)
+        .map(|i| {
+            let (c, r) = wall(pts.get(i)?.1?)?;
+            ((point(i).dist(c) - r).abs() <= eps && (point(i + 1).dist(c) - r).abs() <= eps).then_some((c, r))
+        })
+        .collect();
+    let circle = |i: usize| circles.get(i % m).copied().flatten();
+    let same = |i: usize, (c, r): (Vec2, f64)| circle(i).is_some_and(|(d, s)| d.dist(c) <= eps && (s - r).abs() <= eps);
+    // Start where no arc runs on across the start (anywhere when the whole loop is one circle).
+    let start = (0..m).find(|i| circle(*i + m - 1).is_none_or(|c| !same(*i, c))).unwrap_or(0);
+    let mut segs = Vec::new();
+    let mut i = 0;
+    while i < m {
+        let k = start + i;
+        let Some((c, r)) = circle(k) else {
+            segs.push(Seg2::Line { a: point(k), b: point(k + 1) });
+            i += 1;
+            continue;
+        };
+        let mut j = i + 1;
+        while j < m && same(start + j, (c, r)) {
+            j += 1;
+        }
+        let sweep: f64 = (i..j)
+            .map(|s| {
+                let d = (point(start + s + 1) - c).angle() - (point(start + s) - c).angle();
+                (d + PI).rem_euclid(TAU) - PI
+            })
+            .sum();
+        // Arcs of up to half a turn each.
+        let pieces = ((sweep.abs() / PI - 1e-9).ceil() as usize).clamp(1, 4);
+        let (a0, step) = ((point(k) - c).angle(), sweep / pieces as f64);
+        segs.extend((0..pieces).map(|p| Seg2::Arc { center: c, radius: r, start: a0 + step * p as f64, sweep: step }));
+        i = j;
+    }
+    Loop2 { segs }
+}
+
 /// The body a placed plastic feature joins: by name, else the one under the point.
 fn body_under(st: &ModelState, body: &Option<String>, p: Vec3) -> Result<String> {
    let i = body_at(st, body, &[p])?;
@@ -1239,8 +1389,32 @@ pub(super) fn plastic_eval(doc: &Document, vals: &BTreeMap<String, Value>, f: &F
            let mut loops = face_loops(&mesh, &plane, *face, n, 0.0, tol);
            loops.sort_by(|a, b| poly_area(b).abs().total_cmp(&poly_area(a).abs()));
            let ccw = |l: &[Vec2]| if poly_area(l) < 0.0 { l.iter().rev().copied().collect::<Vec<_>>() } else { l.to_vec() };
-            let (Some(outer), Some(inner)) = (loops.first().map(|l| ccw(l)), loops.get(1).map(|l| ccw(l))) else {
-                return Err(DocError::Invalid("pick the rim face of a shelled body (a face with an inner and an outer edge)".into()));
+            // The inner edge is an opening (the cavity under a rim): not the foot of a boss or a
+            // wall standing on the face, whose side the band would run against.
+            let opening = |l: &[Vec2]| {
+                let eps = (tol * 4.0).max(1e-3);
+                l.iter().zip(l.iter().cycle().skip(1)).filter_map(|(a, b)| Some(((*a + *b) * 0.5, (*b - *a).normalized()?))).take(3).any(|(m, t)| {
+                    // Just over the face, inside the loop (to the left of a ccw loop's edges).
+                    let q = plane.to_world(m + Vec2::new(-t.y, t.x) * eps) + n * eps;
+                    !mesh.contains(q)
+                })
+            };
+            let outer = loops.first().map(|l| ccw(l));
+            let openings: Vec<Vec<Vec2>> = loops.iter().skip(1).map(|l| ccw(l)).filter(|l| opening(l)).collect();
+            // A rim runs round one opening, the cavity; smaller ones (a screw hole) may sit in it.
+            // Openings alike in size (a plate's holes) leave no edge that is the rim's.
+            let alike = match openings.as_slice() {
+                [a, b, ..] => poly_area(b).abs() > 0.5 * poly_area(a).abs(),
+                _ => false,
+            };
+            let (Some(outer), Some(inner), false) = (outer, openings.first().cloned(), alike) else {
+                let what = match (loops.len(), openings.len()) {
+                    (0 | 1, _) => "pick the rim face of a shelled body (a face with an inner and an outer edge)".to_string(),
+                    (_, 0) => "pick the rim face of a shelled body: this face's inner edges are where other features stand on it, not an opening"
+                        .to_string(),
+                    (_, k) => format!("pick the rim face of a shelled body (round one opening): this face has {k} openings alike in size"),
+                };
+                return Err(DocError::Invalid(what));
            };
            let bw = if *groove { w + g } else { w };
            // A lip: the band raised from the rim's own faces (its walls continue the walls
@@ -1,5 +1,6 @@
-//! Evaluation of the surface features: Patch, Stitch, Thicken, Trim, Extend and Surface Extrude
-//! (kernel `surfaces`).
+//! Evaluation of the surface features: Patch, Stitch, Thicken, Trim, Extend, Surface Extrude,
+//! Revolve, Sweep and Loft, Offset, Unstitch and Reverse Normal (kernel `surfaces`,
+//! `surface_offset`).

 use super::*;
 use solidcraft_geom::Seg2;
@@ -98,25 +99,167 @@ pub(super) fn eval(doc: &Document, vals: &BTreeMap<String, Value>, f: &Feature,
            let d = val(vals, &extent.distance, Kind::Length)?;
            let off = extent.start_offset.as_deref().map(|e| val(vals, e, Kind::Length)).transpose()?.unwrap_or(0.0);
            let (a, b) = extent_sides(vals, extent, d, extent.direction)?;
-            let mut chains: Vec<Vec<Seg2>> = Vec::new();
-            if let Some(sel) = profiles {
-                for r in solidcraft_sketch::merge_regions(&select_profiles(&ss, sel)?) {
-                    chains.extend(std::iter::once(r.outer).chain(r.holes).map(|lp| lp.segs));
+            let chains = sheet_chains(&ss, profiles.as_ref(), curves)?;
+            let body = kernel::extrude_sheet(&ss.plane, &chains, a + off, b + off)?;
+            push_sheet(st, f, crate::lineage::ChainRoles { sketch: &ss, chains: &chains }.tool(body));
+            Ok(())
+        }
+        FeatureKind::SurfaceRevolve { sketch, profiles, curves, axis, angle, angle2, symmetric } => {
+            let ss = sketch_in_feature_frame(
+                doc,
+                st.sketch(*sketch).ok_or_else(|| DocError::Unknown(format!("sketch {sketch} (it must come earlier in the timeline)")))?,
+                f.component,
+            )?;
+            let (o, d) = revolve_axis(&ss, axis)?;
+            let a = val(vals, angle, Kind::Angle)?;
+            let (start, sweep) = match (angle2, symmetric) {
+                (Some(a2), _) => {
+                    let a2 = val(vals, a2, Kind::Angle)?;
+                    (-a2, a + a2)
+                }
+                (None, true) => (-a / 2.0, a),
+                (None, false) => (0.0, a),
+            };
+            let chains = sheet_chains(&ss, profiles.as_ref(), curves)?;
+            let body = kernel::revolve_sheet(&ss.plane, &chains, o, d, start, sweep)?;
+            push_sheet(st, f, crate::lineage::ChainRoles { sketch: &ss, chains: &chains }.tool(body));
+            Ok(())
+        }
+        FeatureKind::Unstitch { body, faces } => {
+            let i = st.bodies.iter().position(|b| &b.name == body).ok_or_else(|| DocError::Unknown(format!("body `{body}`")))?;
+            let Some(mb) = st.bodies.get(i).cloned() else { return Err(DocError::Invalid("body".into())) };
+            let (pieces, rest) = kernel::unstitch(&mb.body, faces)?;
+            let source = mb.traced();
+            // The faces left keep the body's name; each face taken out is a new surface body.
+            match rest {
+                Some(rest) => {
+                    if let Some(slot) = st.bodies.get_mut(i) {
+                        *slot = ModelBody::traced_new(mb.name.clone(), source.then(rest), mb.feature);
+                    }
+                }
+                None => {
+                    st.bodies.remove(i);
                }
            }
-            chains.extend(curve_chains(&ss, curves)?);
-            if chains.is_empty() {
-                return Err(DocError::Invalid("pick the profiles or curves to extrude".into()));
+            for (k, piece) in pieces.into_iter().enumerate() {
+                let name = new_name(st, f, k);
+                st.bodies.push(ModelBody::traced_new(name, source.then(piece), f.id));
            }
-            let body = kernel::extrude_sheet(&ss.plane, &chains, a + off, b + off)?;
+            Ok(())
+        }
+        FeatureKind::ReverseNormal { body, faces } => {
+            let i = st.bodies.iter().position(|b| &b.name == body).ok_or_else(|| DocError::Unknown(format!("body `{body}`")))?;
+            let Some(mb) = st.bodies.get(i).cloned() else { return Err(DocError::Invalid("body".into())) };
+            let turned = mb.traced().then(kernel::reverse_faces(&mb.body, faces)?);
+            if let Some(slot) = st.bodies.get_mut(i) {
+                *slot = ModelBody::traced_new(mb.name, turned, mb.feature);
+            }
+            Ok(())
+        }
+        FeatureKind::SurfaceSweep { sketch, profiles, curves, path_sketch, path } => {
+            let ss = st.sketch(*sketch).ok_or_else(|| DocError::Unknown(format!("sketch {sketch} (it must come earlier in the timeline)")))?;
+            let ps =
+                st.sketch(*path_sketch).ok_or_else(|| DocError::Unknown(format!("sketch {path_sketch} (it must come earlier in the timeline)")))?;
+            // As Sweep: a 3D path sketch is followed in the feature's frame, the curves with it.
+            let profile;
+            let ss = if !ps.sketch.wires.is_empty() {
+                profile = profile_in_frame(doc, ss, f.component)?;
+                &profile
+            } else {
+                ss
+            };
+            let mapped = path_in_frame(doc, ps, f.component)?;
+            let ps = mapped.as_ref();
+            let chains = sheet_chains(ss, profiles.as_ref(), curves)?;
+            // The path runs on from the end nearest the middle of the curves.
+            let pts: Vec<Vec2> = chains.iter().flatten().flat_map(|s| s.polyline(1e-2)).collect();
+            let start = ss.plane.to_world(pts.iter().fold(Vec2::default(), |a, p| a + *p) * (1.0 / pts.len().max(1) as f64));
+            let body = match path_points(ps, path, start)? {
+                Some(pts) => kernel::sweep_sheet_points(&ss.plane, &chains, &pts)?,
+                None => kernel::sweep_sheet(&ss.plane, &chains, &path_segments(ps, path, start)?)?,
+            };
+            let traced = crate::lineage::ChainRoles { sketch: ss, chains: &chains }.tool(body);
+            push_sheet(st, f, traced);
+            Ok(())
+        }
+        FeatureKind::SurfaceLoft { sections } => {
+            let mut secs = Vec::with_capacity(sections.len());
+            let mut sketches = Vec::with_capacity(sections.len());
+            for sec in sections {
+                let ss = sketch_in_feature_frame(
+                    doc,
+                    st.sketch(sec.sketch)
+                        .ok_or_else(|| DocError::Unknown(format!("sketch {} (it must come earlier in the timeline)", sec.sketch)))?,
+                    f.component,
+                )?;
+                let profiles = match (&sec.profiles, sec.curves.is_empty()) {
+                    (None, true) => Some(&ProfileSel::All),
+                    (p, _) => p.as_ref(),
+                };
+                let mut chains = sheet_chains(&ss, profiles, &sec.curves)?.into_iter();
+                let (Some(chain), None) = (chains.next(), chains.next()) else {
+                    return Err(DocError::Invalid(
+                        "each loft section must be one chain: one profile without holes, or curves meeting end to end".into(),
+                    ));
+                };
+                secs.push((ss.plane, chain));
+                sketches.push(ss);
+            }
+            let body = kernel::loft_sheet(&secs)?;
+            // Each wall named by the section curves it runs between, as a loft's sides are.
+            let loops: Vec<solidcraft_geom::Loop2> = secs.iter().map(|(_, c)| solidcraft_geom::Loop2 { segs: c.clone() }).collect();
+            let traced = crate::lineage::SectionRoles { sections: sketches.iter().zip(&loops).collect() }.tool(body);
+            push_sheet(st, f, traced);
+            Ok(())
+        }
+        FeatureKind::SurfaceOffset { faces, body, distance, chain, tolerance } => {
+            let d = val(vals, distance, Kind::Length)?;
+            let tol = match tolerance {
+                Some(t) => val(vals, t, Kind::Length)?,
+                None => 0.01,
+            };
+            let i = body_at(st, body, faces)?;
+            let Some(mb) = st.bodies.get(i).cloned() else { return Err(DocError::Invalid("body".into())) };
+            let picks = if *chain { smooth_chain(&mb, faces) } else { faces.clone() };
+            let mut picked: Vec<usize> = Vec::new();
+            for p in &picks {
+                let fi =
+                    crate::appearance::face_index_at(&mb, *p).ok_or_else(|| DocError::Invalid(format!("Offset: no face of {} at {p:?}", mb.name)))?;
+                if !picked.contains(&fi) {
+                    picked.push(fi);
+                }
+            }
+            let made = Traced::step(kernel::offset_surface(&mb.body, &picked, d, tol)?, &[&mb.traced()]);
            let name = new_name(st, f, 0);
-            st.bodies.push(ModelBody::new(name, body, f.id));
+            st.bodies.push(ModelBody::traced_new(name, made, f.id));
            Ok(())
        }
        _ => Err(DocError::Invalid("not a surface feature".into())),
    }
 }

+/// A surface builder's body, added to the model with what its faces came from.
+fn push_sheet(st: &mut ModelState, f: &Feature, traced: crate::lineage::Traced) {
+    let name = new_name(st, f, 0);
+    st.bodies.push(ModelBody::traced_new(name, traced, f.id));
+}
+
+/// What a surface builder sweeps: the boundary loops of the picked profiles, then the picked
+/// curves chained end to end.
+fn sheet_chains(ss: &SolvedSketch, profiles: Option<&ProfileSel>, curves: &[String]) -> Result<Vec<Vec<Seg2>>> {
+    let mut chains: Vec<Vec<Seg2>> = Vec::new();
+    if let Some(sel) = profiles {
+        for r in solidcraft_sketch::merge_regions(&select_profiles(ss, sel)?) {
+            chains.extend(std::iter::once(r.outer).chain(r.holes).map(|lp| lp.segs));
+        }
+    }
+    chains.extend(curve_chains(ss, curves)?);
+    if chains.is_empty() {
+        return Err(DocError::Invalid("pick the profiles or curves".into()));
+    }
+    Ok(chains)
+}
+
 /// Most sketch curves one feature chains.
 const MAX_CHAIN_CURVES: usize = 1000;

@@ -104,13 +104,47 @@
 //!   Construction Geometries); a sketch that shows its construction geometry saves as before.
 //!   A `SurfaceExtrude` feature (Surface Extrude: `sketch`, optional `profiles`, `curves` and
 //!   `extent`, walls only) is first saved in 17; 0.8.0 would refuse the unknown feature.
+//! - 18: surface features 0.9.0 doesn't know: `Unstitch` (a body's faces taken out as surface
+//!   bodies) and `ReverseNormal` (a surface body's faces turned over), each a `body` and
+//!   optional `faces` points. Version 17 designs need no transformation; the version stamp makes
+//!   0.9.0 (which reads up to 17) ask for an update instead of meeting a feature it can't read.
+//!   Under the same version, a sketch text's link source can carry a `style`: `bold` and
+//!   `italic` (the font's bold or italic face), `align` (`left`, `center` or `right`),
+//!   `letter_spacing` (mm), `line_spacing` (times the font's line distance), `path` (the id of a
+//!   curve of the same sketch the baseline follows) and `reverse`. A text without `style` is set
+//!   as it always was; 0.9.0 would drop the style and set the text plain, off its curve.
+//!   Under the same version, Delete Face can leave the gap open (`heal: false` on the feature:
+//!   the faces left are a surface body); a Delete Face without it heals, as it always did, and
+//!   saves as before. 0.9.0 would heal a gap the design leaves open.
+//!   A `SurfaceRevolve` feature (Surface Revolve: `sketch`, optional `profiles`, `curves`,
+//!   `axis`, `angle`, optional `angle2` and `symmetric`) is also first saved in 18.
+//!   A `SurfaceSweep` feature (Surface Sweep: `sketch`, optional `profiles` and `curves`,
+//!   `path_sketch`, `path`) is also first saved in 18.
+//!   A `SurfaceLoft` feature (Surface Loft: `sections`, each a `sketch` with optional `profiles`
+//!   and `curves`) is also first saved in 18.
+//!   A `SurfaceOffset` feature (Offset Surface: `faces` points, optional `body`, `distance`,
+//!   `chain` and `tolerance`) is also first saved in 18.
+//!   Nothing new is saved for holes, but a hole on a face is now drilled into the material: a
+//!   saved `direction` that leaves the face the hole starts on (designs up to 17 could save one,
+//!   taken from another face whose plane passed near the point, such as the far side of a thin
+//!   plate or a face of another body at the same height) is mirrored into that face when the
+//!   design is evaluated. Holes whose direction enters their face build as before.
+//!   Holes at sketch points can be flipped (`flip: true` in the hole's `points`): they drill away
+//!   from the side they would go into by themselves. Holes without it save as before; 0.9.0 would
+//!   drop the flip and drill the other way.
+
+//! - 19: editable associative offset-distance dimensions. Older offsets retain their saved
+//!   fixed distances; migration does not invent dimensions or change geometry.
+//!   Under the same version, a fillet's style can be `curvature` (a G2 quintic blend; `radius`
+//!   is the equivalent circular setback). Fillets of the other styles save as before; 0.9.0
+//!   would refuse the unknown style.

 use serde_json::Value;

 use crate::{DocError, Document, Result};

 /// The format this build writes.
-pub const FORMAT: u32 = 17;
+pub const FORMAT: u32 = 19;

 pub fn format_string(n: u32) -> String {
    format!("solidcraft/{n}")
@@ -127,7 +161,7 @@ pub fn version_of(s: &str) -> Option<u32> {

 /// JSON-level upgrades: entry `i` turns format `i + 1` into `i + 2`.
 type JsonStep = fn(&mut Value) -> Result<()>;
-const JSON_STEPS: [JsonStep; 16] = [
+const JSON_STEPS: [JsonStep; 18] = [
    |_| Ok(()),
    v2_to_v3,
    v3_to_v4,
@@ -144,6 +178,8 @@ const JSON_STEPS: [JsonStep; 16] = [
    |_| Ok(()),
    |_| Ok(()),
    |_| Ok(()),
+    |_| Ok(()),
+    |_| Ok(()),
 ];

 /// Stored face and edge names were worked out from geometry before format 14; they get the
@@ -17,7 +17,8 @@ use solidcraft_geom::Vec3;

 use crate::{DocError, Document, IDENTITY, Mat, ModelState, Result, apply_point, apply_vector, mat_inverse, mat_mul};

-const MAX_JOINTS: usize = 10_000;
+/// Joints the solver (and the URDF export) reads at most.
+pub const MAX_JOINTS: usize = 10_000;

 /// Where a joint origin sits on a component's geometry (component coordinates).
 #[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
@@ -30,6 +30,7 @@ pub mod motion;
 mod name_lookup;
 pub mod naming;
 mod params;
+pub mod physical_material;
 mod piece_names;
 mod profile_refs;
 pub mod progress;
@@ -40,12 +41,15 @@ mod project3d;
 pub use project3d::iso_grid;
 pub mod sheet;

-pub use assembly::{IDENTITY, Mat, Occurrence, apply_point, apply_vector, is_identity, map_point_expr, mat_inverse, mat_mul, rigid};
+pub use assembly::{
+    IDENTITY, MAX_PLACEMENT_DEPTH, MAX_PLACEMENTS, Mat, Occurrence, apply_point, apply_vector, is_identity, map_point_expr, mat_inverse, mat_mul,
+    rigid,
+};
 pub use document::*;
 pub use eval::{
    EdgeRef, FeatureResult, Model, ModelBody, ModelState, RevolveExtent, SolvedSketch, ThreadInfo, curve_pick_error, edge_names_for, edge_refs,
-    object_height, parse_metric_thread, pattern_matrices, revolve_extent, revolve_extent_with_convention, select_profiles, state_in_frame,
-    state_in_frame_at, through_all_distance, world_state,
+    face_point_names, face_point_state, hole_direction_at, object_height, parse_metric_thread, pattern_matrices, revolve_extent,
+    revolve_extent_with_convention, select_profiles, sketch_hole_direction, state_in_frame, state_in_frame_at, through_all_distance, world_state,
 };
 pub use params::{ParamRow, ParamUser, cycles};
 pub use solidcraft_kernel as kernel;
@@ -207,23 +207,30 @@ impl<'a> ProfileRoles<'a> {
        let segments: Vec<&solidcraft_geom::Seg2> =
            self.region.map(|r| std::iter::once(&r.outer).chain(&r.holes).flat_map(|l| &l.segs).collect()).unwrap_or_default();
        let curves = self.sketch.map(crate::config::ExactSketchCurves::new);
-        let curve = |segment: usize| -> Option<String> { curves.as_ref()?.find_along(segments.get(segment)?).map(|id| format!("side:{id}")) };
+        // Every curve the segment is drawn on (one, or several coincident or collinear ones).
+        let curve = |segment: usize| -> Vec<String> {
+            let (Some(curves), Some(segment)) = (curves.as_ref(), segments.get(segment)) else { return Vec::new() };
+            curves.find_all_along(segment).into_iter().map(|id| format!("side:{id}")).collect()
+        };
        let roles = history
            .faces
            .iter()
            .map(|face| {
                let mut roles: Vec<String> = Vec::new();
                for origin in &face.origins {
-                    let role = match *origin {
+                    let found = match *origin {
                        FaceOrigin::Profile { segment } => curve(segment),
-                        FaceOrigin::Cap { end } => self.caps.get(usize::from(end)).cloned().flatten(),
-                        _ => None,
+                        FaceOrigin::Cap { end } => self.caps.get(usize::from(end)).cloned().flatten().into_iter().collect(),
+                        _ => Vec::new(),
                    };
-                    match role {
-                        Some(role) if !roles.contains(&role) => roles.push(role),
-                        Some(_) => {}
-                        // One unknown origin leaves the face unknown: never a partial guess.
-                        None => return Vec::new(),
+                    // One unknown origin leaves the face unknown: never a partial guess.
+                    if found.is_empty() {
+                        return Vec::new();
+                    }
+                    for role in found {
+                        if !roles.contains(&role) {
+                            roles.push(role);
+                        }
                    }
                }
                roles
@@ -249,6 +256,47 @@ impl<'a> ProfileRoles<'a> {
    }
 }

+/// How a surface built from chains of sketch segments (Surface Extrude, Revolve, Sweep) names
+/// its walls: each `side:<curve>` of the sketch curve its segment lies on exactly, segments
+/// numbered through the chains in order. It has no caps.
+pub(crate) struct ChainRoles<'a> {
+    pub sketch: &'a SolvedSketch,
+    pub chains: &'a [Vec<solidcraft_geom::Seg2>],
+}
+
+impl ChainRoles<'_> {
+    /// The surface `body`, its walls named by their roles where its history gives them.
+    pub fn tool(&self, body: Body) -> Traced {
+        let roles = body.history().filter(|h| h.operands == 0).map(|h| self.of(h));
+        Traced::made(body, roles)
+    }
+
+    fn of(&self, history: &History) -> Vec<Vec<String>> {
+        let segments: Vec<&solidcraft_geom::Seg2> = self.chains.iter().flatten().collect();
+        let curves = crate::config::ExactSketchCurves::new(self.sketch);
+        history
+            .faces
+            .iter()
+            .map(|face| {
+                let mut roles: Vec<String> = Vec::new();
+                for origin in &face.origins {
+                    let role = match *origin {
+                        FaceOrigin::Profile { segment } => segments.get(segment).and_then(|s| curves.find_along(s)).map(|id| format!("side:{id}")),
+                        _ => None,
+                    };
+                    match role {
+                        Some(role) if !roles.contains(&role) => roles.push(role),
+                        Some(_) => {}
+                        // One unknown origin leaves the face unknown: never a partial guess.
+                        None => return Vec::new(),
+                    }
+                }
+                roles
+            })
+            .collect()
+    }
+}
+
 /// How a loft names its faces: each side by the sketch curves of the sections it runs between
 /// (`side:<curve>` for the first section's, `side:s<k>.<curve>` for section `k`'s), named after
 /// the section with the most segments (the one each side spans exactly one segment of) and
@@ -260,6 +260,14 @@ impl EdgeHit {
 /// answering to it (merged into it, or the named piece told apart by the faces around it); else
 /// the piece of it nearest `p` (`split`).
 pub fn locate_face(st: &ModelState, name: &str, p: Vec3) -> Option<FaceHit> {
+    // Every body's names are read below: work out the ones not known yet on all cores first
+    // (each body's names are its own, whichever thread works them out).
+    if legacy_name(name).is_none() {
+        let bodies: Vec<&ModelBody> = st.bodies.iter().filter(|b| !b.body.is_mesh()).collect();
+        solidcraft_kernel::for_each_on_threads(&bodies, 16, |b| {
+            let _ = naming::names(b);
+        });
+    }
    locate_in(st.bodies.iter().enumerate().filter(|(_, b)| !b.body.is_mesh()), name, p)
 }

@@ -60,16 +60,19 @@ impl NameCell {
    pub fn known(names: Arc<Vec<String>>) -> Self {
        let legacy = OnceLock::new();
        let _ = legacy.set(names.clone());
-        NameCell { legacy: Arc::new(legacy), ..Self::shared(Arc::new(Names::given(names)), None) }
+        NameCell { legacy: Arc::new(legacy), ..Self::shared(Arc::new(Names::given(names))) }
    }
    /// The names of `body` (a moved copy of a body keeps its faces' names, and how sure they are).
+    ///
+    /// Worked out on first request, from the source: moving a body (a transfer into a
+    /// component, a placed instance) does not name every face of every moved body up front.
    pub fn same(body: &ModelBody) -> Self {
-        Self::shared(names(body), Some(Arc::new(body.clone())))
+        NameCell { copy_of: Some(Arc::new(body.clone())), ..NameCell::default() }
    }
-    fn shared(names: Arc<Names>, copy_of: Option<Arc<ModelBody>>) -> Self {
+    fn shared(names: Arc<Names>) -> Self {
        let cell = OnceLock::new();
        let _ = cell.set(names);
-        NameCell { names: Arc::new(cell), copy_of, ..NameCell::default() }
+        NameCell { names: Arc::new(cell), ..NameCell::default() }
    }
 }

@@ -206,6 +209,10 @@ pub fn face_name_exact(b: &ModelBody, index: usize) -> bool {
 /// A body's names, with what finding them again needs: from the history of the feature that
 /// made it where it reports one, else from geometry (unverified).
 pub(crate) fn names(b: &ModelBody) -> Arc<Names> {
+    // A moved copy has its source's names (the source's cell keeps them for both).
+    if let Some(source) = &b.names.copy_of {
+        return b.names.names.get_or_init(|| names(source)).clone();
+    }
    b.names
        .names
        .get_or_init(|| {
@@ -69,7 +69,7 @@ impl FeatureKind {
                    v.push(("To offset", d, L));
                }
            }
-            FeatureKind::Revolve { angle, angle2, .. } => {
+            FeatureKind::Revolve { angle, angle2, .. } | FeatureKind::SurfaceRevolve { angle, angle2, .. } => {
                v.push(("Angle", angle, A));
                if let Some(a) = angle2 {
                    v.push(("Angle 2", a, A));
@@ -77,6 +77,7 @@ impl FeatureKind {
            }
            FeatureKind::Fillet { radius, style, .. } => match style {
                crate::FilletStyle::Constant => v.push(("Radius", radius, L)),
+                crate::FilletStyle::Curvature => v.push(("Equivalent radius", radius, L)),
                crate::FilletStyle::Chord => v.push(("Chord length", radius, L)),
                crate::FilletStyle::Variable { radius2, mid, .. } => {
                    v.push(("Start radius", radius, L));
@@ -277,6 +278,13 @@ impl FeatureKind {
            FeatureKind::Thicken { thickness, .. } => v.push(("Thickness", thickness, L)),
            FeatureKind::SurfaceTrim { plane, .. } => plane_inputs_mut(plane, &mut v),
            FeatureKind::SurfaceExtend { distance, .. } => v.push(("Distance", distance, L)),
+            FeatureKind::Unstitch { .. } | FeatureKind::ReverseNormal { .. } => {}
+            FeatureKind::SurfaceOffset { distance, tolerance, .. } => {
+                v.push(("Distance", distance, L));
+                if let Some(t) = tolerance {
+                    v.push(("Tolerance", t, L));
+                }
+            }
            FeatureKind::Patch { .. } => {}
            FeatureKind::Combine { .. }
            | FeatureKind::SheetBase { .. }
@@ -288,6 +296,8 @@ impl FeatureKind {
            | FeatureKind::BoundaryFill { .. }
            | FeatureKind::Loft { .. }
            | FeatureKind::Sweep { .. }
+            | FeatureKind::SurfaceSweep { .. }
+            | FeatureKind::SurfaceLoft { .. }
            | FeatureKind::Import { .. }
            | FeatureKind::MeshImport { .. }
            | FeatureKind::BodyTransfer { .. } => {}