Version 0.6.0 (#444)

Minor bump: the SolidCraft rename (#389) and the design container format (#327) both change
the files people work with; builds 0.5 and older can't open designs saved by 0.6. Release
notes cover the new format, what's new and the upgrade from SolveCraft.


Claude-Session: https://claude.ai/code/session_01HWLPLy7ug7URSK5WybjRNa

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

.github/release-notes.md

@@ -5,11 +5,43 @@ parameter to watch the timeline rebuild. [Documentation](https://bherbruck.githu
 [issues](https://github.com/bherbruck/solidcraft/issues). AI agents can model with it over MCP:
 `solidcraft-cli mcp` ([how](https://bherbruck.github.io/solidcraft/guide/mcp.html)).
 
+**Why 0.6:** this is a minor bump because two things change the files you work with: the
+rename to SolidCraft and the new design file format. Files from earlier builds open fine, but
+builds 0.5 and older can't open designs saved by 0.6.
+
+**What's new**
+- **New design file format.** Saves are a zip container by default; plain JSON is still one
+  click away (details below).
+- **Sheet metal:** flange corners close at any angle, and cut-outs fold across bends at any
+  angle, including curved bends.
+- **Crash reports:** after a crash, Help ▸ Crash Reports… shows what happened with a ready-to-file
+  issue draft. Reports stay on your computer; nothing is sent. `solidcraft-cli crashes` lists and
+  replays them.
+- **Snap package** for x86_64 and aarch64 on every release, alongside the AppImage, `.deb`, `.rpm`
+  and Flatpak.
+- **Trackpad navigation** (two-finger pan, pinch zoom), a fillet option that shrinks a radius too
+  big for its edges, cleaner dialogs and toolbar panels, and the unfinished Generative Design
+  workspace is gone.
+- Many modelling fixes: extrude/revolve in moved components, To Object picks, very flat arcs,
+  touching lines and arcs in booleans, and `solidcraft-cli run` now fails when a feature fails.
+
+**New file format.** Save and Save As now write `.solidcraft` designs as a zip container
+that stores imported STEP, mesh and image data as binary, once each, at full precision, so
+designs with imports save and open faster. What that means for you:
+- Your existing `.solidcraft` and `.solvecraft` files (plain JSON) still open as before; the
+  format is detected from the contents.
+- Want plain JSON (for diffs or scripts)? Use **File ▸ Save As JSON…**, or pick a
+  `.json` name in Save As; later saves keep JSON. **File ▸ Export Design as JSON…** writes a
+  separate JSON copy. From the CLI, `solidcraft-cli run … --save design.json`; from MCP or
+  scripts, pass `"format": "json"` to `save` / `file.save`.
+- SolidCraft 0.5 and older can't open designs saved by 0.6, as a container or as JSON (the
+  JSON format tag is now `solidcraft/14`). Keep a copy of a file you may still open in 0.5.
+
 **Renamed to SolidCraft.** Everything now uses the new name: the `solidcraft` and
 `solidcraft-cli` programs, `.solidcraft` designs, `SOLIDCRAFT_*` environment variables,
 settings folders, package names and the `solidcraft` MCP server. Upgrading from SolveCraft:
 - `.solvecraft` designs still open (double-click, Open, drag-drop, the CLI and MCP); new saves
-  are `.solidcraft`. Builds older than this one can't open files saved by it.
+  are `.solidcraft`.
 - Settings, preferences and recovery files are copied to the new folders on first launch; the
   old folders are left in place. `SOLVECRAFT_*` environment variables are still read.
 - `solvecraft-cli` remains as a deprecated alias for one release; it forwards to