Fix modelling regressions and reconcile WIP UI work

docs/wip-reconciliation.md

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+# WIP branch reconciliation (#6)
+
+The branches predate the dotted command IDs. Their remaining changes were ported through
+`crates/engine/src/legacy_ids.rs` and reconciled with the current implementation.
+
+| Branches | Result |
+|---|---|
+| `solvecraft-sk`, `solvecraft-d2` | Ported `62d22e2` and `e0b3138`: sketches/projections see placed components; cache keys include placements; moved feature dialogs resolve world picks; Joints uses Browser rows. |
+| `solvecraft-b4` | Ported `2c18dac`: canvases carry component ownership and named joint origins follow component placements. |
+| `solvecraft-asm` | Ported `bc05805`: joint snap feedback, Drive limits, joint menus, and Motion Study editing/playback controls. |
+| `solvecraft-shell`, `solvecraft-shell-b` | Browser chevrons, shared occurrence Move triad, toolbar customization, workspace switcher and status labels are already present on main. Their scenarios remain active; the Joints chevron scenario is now active too. |
+| `solvecraft-kdev3`, `solvecraft-kdev`, `solvecraft-kdev2` | Previously landed as `67c79ec`; the old refs were already removed. |
+| `solvecraft-kdev4` | The earlier robustness, shell, blends, wasm and measurement work is already present. Ported the remaining `9f98449` stacked-prism sewing and repaired curved-boundary face picking. |
+| `solvecraft-params(-build)` | Previously landed as `517b7a9`. |
+
+The source WIP refs are retained until this batch merges. Delete them only after the merged
+main contains the reconciled changes and passes CI.
+
+Regression coverage includes root sketches on translated and rotated components, subsequent
+component moves, canvas save/reopen, joint origins during pending moves, moved feature dialog
+refill, Browser chevrons, sample building, and the UI scenarios. `cargo xtask ci` covers native
+tests, wasm, layering and asset attribution.