feat: strengthen sketches, feature editing, and independent assemblies

ROADMAP.md

@@ -46,20 +46,20 @@ headline counts in-scope tabs only and lists the deferred ones separately.
 | # | Milestone | Status | Hours left |
 |---|---|---|---|
 | M0 | Vertical slice | done | — |
-| 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. Remaining workflow repairs: exact free-form Extend intersections, associative free-form Offset, and consistent occurrence-frame 3D wire authoring | in progress | 4 |
+| 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. Remaining workflow repairs: mixed offset junctions, periodic closed spline seams, and consistent occurrence-frame 3D wire authoring | 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: all 29 Fusion STEP files — [docs/step-import.md](docs/step-import.md)), 3MF export and 3MF/STL import as mesh bodies (done), DXF sketches, OBJ import | in progress | 6 |
 | M5 | Persistent naming of faces and edges (plan/adr/0002): faces named from their history (sketch curve sides, caps, revolve sections, primitive sides, blends, pattern/mirror copies; split pieces numbered), 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. Left: kernel-reported face history (exact through coincident surfaces) | 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, reorder with dependency checks, suppress, rename, delete with dependents, re-resolved references; redefining selections refreshes persistent edge/face references while retaining feature identity and dimension names), 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), 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. Left: emboss on curved faces, exact (unfaceted) modelled threads | in progress | 12 |
+| 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. Left: general curved-face emboss, automatic cylinder target inference, exact (unfaceted) modelled threads | in progress | 12 |
 | M8 | Surface workspace | deferred | — |
 | M9 | Components and assemblies (Fusion-style): 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 |
 | M10 | Sheet metal: flange (base, edge, contour), hem, unfold/refold, convert, flat pattern + DXF, rules: done (oracle 67-76). PLASTIC enclosure subset: Boss, Rib, Web, Lip/Groove, Snap Fit, Rest, Plastic Rules (library, edit, assign; rule draft and clearance as feature defaults): done, no Fusion oracle (licence), 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) | in progress | 36 |
 | M11 | 2D drawings | deferred | — |
 | M12 | Release: installers, signing, docs, performance | planned | 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. Left: component/face style columns | 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": "solvecraft/8"`, 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/solvecraft-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 |
+| 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. Left: certified sketch-side/imported face lineage and 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": "solvecraft/9"`, 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/solvecraft-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 |
 
 ## Known limitations
 
@@ -106,6 +106,23 @@ headline counts in-scope tabs only and lists the deferred ones separately.
   and conics; analytic trim/break also sees free-form cutters. Free-form curves cut at a tangent
   touch (no clean crossing) enter that profile as polylines.
   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
+  closed natural-spline seams remain limitations.
+- Extrude and Revolve editors retain original direction, extent expressions, explicit targets,
+  axes, From/To inputs and All-profile intent. No-op edits preserve downstream dimension names
+  and selected occurrence frames; cancel and successful edits preserve one-step undo history.
+  Placed feature edits preview through the edited timeline entry, and cylindrical Emboss guides
+  use the sketch's actual target, author or uniquely placed third-component frame.
+  Revolve rotator direction and To Object value interaction remain follow-on usability repairs.
+- Cylindrical emboss/deboss wraps bounded orthogonal line profiles, including holes, concave
+  outlines and nested islands, onto complete exterior cylinders or coaxial sleeves with exact
+  radial walls. Select the face explicitly and capture pending positions first. Saved target
+  and author occurrence paths retain the chosen placements; missing/split faces refuse rather
+  than retarget. General free-form profiles, seams, stepped cylinders and other curved surfaces
+  remain unsupported. STEP round-trip and independent radial/volume checks cover this subset.
 - Shell and offset faces work on bodies of planes, cylinders, cones and spheres (convex or not:
   filleted boxes, bosses, domes, countersinks); draft on convex planar bodies and on walls (planes, cylinders → cones) between caps; lofts through three or more sections are smooth (B-spline sides through every section), two
   sections ruled.
@@ -127,17 +144,25 @@ headline counts in-scope tabs only and lists the deferred ones separately.
   checked occurrence paths. Active nested occurrences author planar sketches and solids in
   their selected frame. Pending moves compose through parents; dialog cancellation restores
   its selected move. Source materials and body/face appearances follow transformed instances.
-  Shared nested definitions remain shared, and legacy 3D wire authoring and deep Paste New
-  need further work. See [occurrence workflows](docs/occurrence-workflows.md).
+  Shared nested definitions remain shared. Deep Paste New copies reachable definition graphs,
+  independent feature/input histories, styles and internal motion records, with bounded geometry
+  checks and explicit external-link notices. Paste New selects the copy while preserving the active
+  authoring context. Imported periodic STEP seams survive placement and reexport with shared
+  topology and appearances intact. Creating a component from a body can change its historical
+  implicit Join membership; preserving that material through ownership transfers remains open.
+  Legacy 3D wire authoring needs further work. See [occurrence workflows](docs/occurrence-workflows.md).
 - Configuration rules: ordered typed conditions can drive parameters and suppressions or
   restrict values. Preview explains effective values without modifying the document; applying
   rules validates rows atomically. Length expressions retain their authoring units across
   document-unit changes. The UI supports structured All/Any/Not conditions and rule ordering.
-  Component and face style columns remain open. See [configurations](docs/configurations.md).
+  Component styles and certified semantic face styles are available; unsupported lineage refuses
+  atomically, and stale certified face paint cannot jump to another surface. See [configurations](docs/configurations.md).
 - Sheet-metal material: inherited holes, crossing edge notches, overlapping cuts and retained
   islands share the same boundaries in flat preview, DXF and unfolded solids. Detached material
   pieces survive unfold/refold as one logical sheet group, including split flanged sheets.
   Circular cuts crossing bends remain unsupported; free-form bases use bounded sampling.
+  Partial-depth Cut and Intersect still lack retained machining metadata; later sheet rebuilds
+  can restore removed material. Their continuity repair remains open.
 - Rolling-ball fillet accuracy: independent offset-cylinder tee references check surface
   distance, actual trimmed tessellation, supporting-cylinder contacts and tangency at two
   scales. The measured trimmed-part error is below 0.0001 mm; this is an analytic geometry