Sync monorepo PRs #243 and #248 to the open-source editor.
Move/Rotate Building:
- New move-building-tool with grid snapping, R/T rotation, and Esc cancel
- Floating building action menu with move button
- Building helper with keyboard shortcut hints
- BuildingRenderer now applies position and rotation from node data
Building-Relative Coordinate System:
- GridEvent gains localPosition (building-local coords)
- use-grid-events computes building-local intersection from building mesh
- ToolManager wraps building-relative tools in a building-local <group>
- All tools (wall, slab, ceiling, stair, roof, zone, polygon-editor,
placement coordinator) updated to use event.localPosition
- Placement coordinator adds worldToBuildingLocal helper for cursor
position conversion
2D Floorplan Fix:
- SVG layers wrapped in <g transform=rotate(...)> for building rotation
- Pointer-to-plan conversion un-rotates when building is rotated
- Grid events from 2D include localPosition
Store Changes:
- useEditor movingNode union includes BuildingNode
- NodeActionMenu onDelete is now optional (buildings can move but not delete)
Stair system (full stack):
- New StairNode + StairSegmentNode schemas with flights, landings, L/U-shapes
- StairSystem: geometry generation with throttled per-frame updates
- Stair tool, edit system, panels, tree node, and renderers
- Event bus types, scene registry, and command palette entries
Scene graph utilities:
- cloneLevelSubtree: deep-clone a level with remapped IDs
- forkSceneGraph: clone + strip scan/guide nodes for project forking
Core improvements:
- Read-only mode on scene store (blocks create/update/delete when locked)
- readOnly guards on node-actions and collection actions
- Upload store for scan/guide file upload handling
Viewer state:
- previewSelectedIds for box-select live preview
- hoverHighlightMode (default/delete) for delete-mode hover outline
Major changes:
- Roof system rewrite with roof-segment support
- Scene store refactor
- Spatial grid improvements
- Item light system
- Post-processing and selection manager updates
- Perf monitor component
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
