Split the object inspector, and sweep out the section banners

objectSection.ts had grown to 559 lines around three separable parts: the
queries, the vector rows and the parent row. Four object commands repeated the
same capture/restore preamble – applyCommands stays out, its five carry extra
undo state whose restore order matters.

58 dashed banner comments are gone. The nine labels in nodes/index.ts stay:
they are the only structure a flat 90-entry array has.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

README.md

@@ -199,7 +199,7 @@ shown on the node and editable in the inspector.
 - **Header bar** (the same one the Texture and Container tabs have): the behavior picker,
   **Add node…** (the palette, dropping the node in the middle of the view – the right-click nobody
   finds), **Fit** (which zooms out far enough to hold every node, measuring each by its own drawn
-  height – `editor/graph/framing.ts`), and the size of the graph as "N nodes · M links".
+  height – `editor/framing.ts`), and the size of the graph as "N nodes · M links".
 - **Selection-following, not selection-bound**: selecting a behavior asset, a placed behavior
   or one of its nodes shows that graph; a selection about anything else (a sprite, nothing at
   all) leaves the tab on the behavior you were editing, because checking a sprite's position
@@ -496,25 +496,27 @@ selected and switched back on.
 
 ```
 web/index.html         Vite source page (dev)            index.html   built page (generated, served)
-src/core/model/        Project (object holders), Asset, SceneObject, hierarchy, walk (generic parent/child walks), instance (container content resolved from its template), container (the cycle guard)
+src/core/model/        Project (object holders), Asset, SceneObject, hierarchy, walk (generic parent/child walks), instance (container content resolved from its template), usages (where an asset is used), container (the cycle guard)
 src/core/properties/   PropertySchema, resolve (the only override merge), collider/camera/text geometry, enabled
 src/core/commands/     undoable commands, CommandStack, SetBagValueCommand base, require.ts (validated lookups, and what an instance may not change), naming.ts
 src/core/graph/        graph model, NodeRegistry/NodeContext/values, interpreter; nodes/<category>/<Type>.ts
-src/core/store/        serialize (untrusted JSON → Project), HttpProjectStore
+src/core/store/        serialize (untrusted JSON → Project), http (one API call), HttpProjectStore
 src/runtime/           World, Entity, System interface, Input tracker, CollisionSystem, BehaviorSystem
 src/ui/                widget toolkit (generic, knows nothing about assets)
-src/viewport/          WorldViewport base + SceneViewport/GameViewport, view (transforms),
-                       items (what to draw), symbols (how to draw it)
+src/viewport/          view (transforms), items (what to draw), symbols (how to draw it),
+                       textureFill, TextureLibrary – no editor concepts, so tests reach it freely
 src/editor/            App → Editor (layout + ticker), PlaySession (the run), ProjectSession (load/create),
-                       state, actions, shortcuts, debugHook, autosave
+                       state, actions, shortcuts, debugHook, autosave, framing (fit/marquee maths),
+                       AssetTabEditor (the shared shell of the three asset tabs)
+src/editor/viewport/   WorldViewport base + SceneViewport/GameViewport – editing tools, hence not in src/viewport/
 src/editor/inspector/  Inspector panel, field factory, previewHandlers (scrub → preview → command),
-                       one section per selection kind (asset/object/node)
+                       one section per selection kind (asset/object/node), objectQueries/vectorRows/parentRow
 src/editor/panels/     AssetPanel, HierarchyPanel, Toolbar
-src/editor/graph/      GraphEditor (header + picker), GraphCanvas, NodeView, NodePalette
+src/editor/graph/      GraphEditor (header + picker), GraphCanvas, NodeView, NodePalette, folding (hidden links)
 src/editor/container/  ContainerEditor (header + picker), ContainerCanvas (a SceneViewport on a template)
 src/editor/texture/    TextureEditor (header + picker), TextureCanvas (picture + frames), SliceDialog, sheetView (the grid maths)
 api/                   PHP backend            data/projects/   persisted projects
-tests/                 Vitest unit tests      tools/           seed-*, e2e (steps in tools/e2e/), smoke-jumprun, smoke-tetris, lib/
+tests/                 Vitest unit tests      tools/           seed-*, e2e (steps in tools/e2e/, rig in tools/e2e/lib/), smoke-*, lib/
 ```
 
 The toolbar's right edge shows the frame rate (frames counted over a 0.5 s window, updated
@@ -542,7 +544,7 @@ npm run format       # Prettier over src, tests and tools
 npm run check        # typecheck + lint + format:check + tests, what CI would run
 npm run build        # writes dist/ and regenerates index.html
 export GM_REMOTE=user@host                                    # optional: run the browser elsewhere; see below
-node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 415 editor checks, screenshots in /tmp/gm-e2e-*.png
+node tools/seed-e2e.mjs && node tools/e2e.mjs                 # 416 editor checks, screenshots in /tmp/gm-e2e-*.png
 GM_STEPS=20 node tools/e2e.mjs                                # or 1-12, or 6,20 – a subset while working on one step
 node tools/seed-jumprun.mjs && node tools/smoke-jumprun.mjs   # 24 checks: the example game, played end to end
 node tools/seed-tetris.mjs && node tools/smoke-tetris.mjs     # 19 checks: the Tetris example, played end to end