refactor: compose UI shell with explicit application operations and component owners

docs/CODE-BOUNDARIES.md

@@ -327,3 +327,14 @@ original Display groups, independent scroll positions and current focus owner.
 presentation. It receives project reads and explicit actions, with no imports of
 the director, source modules, camera engine or storage. Replacement and disposal
 release listeners; pending action feedback is limited to its current owner.
+
+## UI assembly and styles
+
+`ui/shell` assembles controls from supplied existing layer, navigation, terrain,
+rendering, HUD and share operations. `src/standalone/ui.js` provides the running
+application's instances; `src/ui.js` remains the compatibility entry. The shell
+imports no standalone bootstrap or concrete live layer implementation.
+Panel layout, position/drag, notices, recording and deferred UI work have separate
+owners with synchronous cleanup. Existing scene, share and HUD engines retain
+their entry points. `ui/styles` loads the ordered stylesheet entry; component
+files retain the original cascade, including responsive and dock refinements.

docs/CURRENT-STATE.md

@@ -1,5 +1,19 @@
 # God's Eye View Current State
 
+## UI shell and component ownership
+
+The standalone entry composes the UI with the application's existing layer,
+terrain, navigation and rendering operations. The shell receives those instances
+and assembles the controls. Panel layout scheduling, position preferences and
+active drags, loading notices, recording presentation and DOM lookup have focused
+owners. Disposal revokes queued presentation and listeners before asynchronous
+Context restoration, cancels an unfinished drag without saving it, restores the
+recording HUD and releases status decoration without replacing accessible text.
+The ordinary control snapshot includes the current 3D model toggle and mode.
+
+`style.css` imports component styles in their original cascade order. Scene,
+share, HUD and layer engines retain their existing behavior and entry points.
+
 ## Scene control ownership
 
 Scene controls own creation/deletion prompts, panel listeners, shot rows, playback/recording presentation