One building mode, light room labels and a unified viewer

[wass08]

What does this PR do?

Simplifies how the editor and viewers handle levels, rooms and selection.

One building mode. The editor phase was Site / Structure / Furnish, but clicks switched it to the clicked node's home, so the tab followed the last click, 2D and 3D disagreed, and some handles only existed on Structure. Phase is now site | building:

• No click changes it, except entering the building from Site. In 2D or 3D, a click on the house from Site selects the building.
• Everything on the active level is clickable in 2D and 3D: rooms first, then drill down.
• Outline editors and 2D opening placement depend only on select mode.
• Keys: 1 = Site, 2 = building, F opens the catalog; B/P/M/Z just arm their tools.
• A stored structure/furnish preference reads back as building.
• resolveNodeSelectionTarget, emitCanvasNodeSelection and the selection:canvas-node-click event are removed.

One rooms list, light room labels. The Elements | Rooms layer split (structureLayer) is removed.

• The Scene panel lists Units, then Rooms, then Elements.
• Rooms on the active level show a small pill (colour dot, name, area in the active unit) in 2D and 3D when nothing but the site, building or level is selected.
• Pills float 1.25 m above the floor, declutter when they overlap, and fade in and out. Hover and click go through the canvas's zone rule.
• Tinted zone volumes remain only for unit-membership painting. Drawn zones look like rooms.
• The zone toolbar button is gone; Z still works.

Room colours. A colour is picked once at creation from the room's id (zoneColorForSeed, newZone) and stored; existing rooms are never recoloured.

Viewers. The public viewer (baked and parametric), embeds and the editor's Preview share one rules module (viewer-selection) with two hit sources and one header:

• Floor or wall click → room; second click → element. An empty click clears but keeps the floor.
• Breadcrumb Building › Floor › Room › Item, with framing on crumb, sidebar and pill clicks (camera-controls:frame).
• Sidebar Units / Rooms / Zones, and a hover-name pill.
• The editor's pills replace tinted volumes.
• Preview saves and restores the editor's selection, focused unit, tool and camera.

Editor app. Streetscape is pinned to a one-line fix (drop setPhase('structure') / setStructureLayer); upstream sudhir9297/streetscape-pascal-plugin#1.

How to test

1. Click a sofa, a wall, then stairs in 3D and 2D → the mode stays Building.
2. From Site, click the house in 2D or 3D → the building is selected and you're inside.
3. With nothing selected → room pills with distinct colours. Select a wall → pills fade out. Hover a pill → the room highlights; click it → the room is selected.
4. Draw a zone → it gets a pill like a room, with no tint.
5. Preview → click a floor (selects the room), an item (breadcrumb shows the room), a sidebar room (camera frames it) → exit → the editor is exactly as before.

Automated: editor, nodes, core, viewer and mcp suites pass locally.

Screenshots / screen recording

Not added yet.

Checklist

• I've tested this locally with bun dev
• My code follows the existing code style (run bun check to verify)
• I've updated relevant documentation (if applicable)
• This PR targets the main branch

🤖 Generated with Claude Code

https://claude.ai/code/session_01RzGbHVg2Tpv4zEw9yLaT5X

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Note

Medium Risk
Broad changes to editor phase, 2D/3D/preview selection, camera framing, and zone creation colors affect core interaction paths; regressions are likely in edge cases rather than data/security.

Overview
Unifies editor navigation around site and building, dropping the old Structure/Furnish split and the Elements vs Rooms structureLayer. Build tools and palette activations now set phase: 'building' only; selection no longer auto-switches phase. From site, clicks on the building (2D or 3D via enterBuildingFromCanvas / enterBuildingFromPlanHit) enter the building instead of routing through structure/furnish targets.

Room UX adds decluttered name/area pills in 2D and 3D (RoomLabels2D/3D) when the level is at rest (select idle, only site/building/level context selected). Zone fills are tinted volumes only during unit-membership painting; otherwise zones behave like rooms (outline highlight, shared clickZoneArea / hoverZoneArea). The old 3D zone label editor system is removed.

Core introduces newZone and zoneColorForSeed so new rooms get a deterministic palette color from their id unless explicitly set; structure reconcile remaps colors when zone ids are minted. camera-controls:frame and CameraControlFrameEvent support viewer-style framing.

Preview aligns with the shared viewer selection path (ViewerSelectionManager, ParametricViewerRooms): left click no longer pans the camera; opening preview frames level/building once; camera restore on exit. Streetscape dependency is repinned to a fork commit without the removed phase APIs.

^{Reviewed by Cursor Bugbot for commit 0eb4058. Bugbot is set up for automated code reviews on this repo. Configure here.}

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Stale Bugbot comment from a previous run.

[cursor]

Site entry clears the active floor

High Severity

Clicking the house from Site calls setSelection with only buildingId, and the viewer hierarchy guard then nulls levelId. The user enters Building with no active floor, so room pills, level filtering, and the floorplan lose the storey they just clicked.

 

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[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

There are 2 total unresolved issues (including 1 from previous review).

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[cursor]

Preview shows tinted zone volumes

Medium Severity

showZones now means “unit-painting volumes only”, but ZoneSystem still restores showZones to true on unmount. Opening Preview unmounts that system, so the shared viewer flag turns zone meshes back on and tinted volumes appear next to the new pills.

 

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