refactor: separate application shell state and lifecycle owners

docs/CURRENT-STATE.md

@@ -1,5 +1,13 @@
 # God's Eye View Current State
 
+The application shell composes focused state owners for navigation, destination
+lookup/orbit, Cockpit, visual settings, panel layout, aircraft display and layer
+bindings. Keyboard/display subscriptions have a separate lifetime; existing
+layer, scene and voice methods remain available through a delegation facade.
+Disposal settles pending globe resets and removes camera-entry listeners before
+asynchronous restoration; replacing a manager detaches its old Directions
+services. See [UI ownership](UI-OWNERSHIP.md).
+
 Director's ordered shot runner is exported independently of rendering, UI,
 storage and scene content. The existing scene controller supplies an adapter for
 visual/layer state, camera travel, media holds and release. Playback cancellation,

docs/UI-OWNERSHIP.md

@@ -0,0 +1,35 @@
+# Application UI ownership
+
+`src/ui/applicationShell.js` constructs controls, connects their explicit inputs
+and coordinates shutdown. `shellFacade.js` preserves the methods used by layers,
+scene playback and voice. It delegates; new behavior belongs with its owner.
+
+| Owner | Responsibility |
+| --- | --- |
+| `navigationController.js` | Navigation generation, tracking release and camera authority |
+| `locationNavigation.js` | Destination lookup/selection, orbit, world jumps and globe-reset completion |
+| `cockpitCoordinator.js` | Cockpit entry/rollback, readouts and the single Display portal |
+| `visualSettings.js` | Effects, detection overrides, visual restoration and render-loop lifetime |
+| `panelChrome.js` | Disclosure, docking, layout and Cockpit panel restoration |
+| `aircraftDisplay.js` | Shared commercial/military 3D display preferences and controls |
+| `layerBindings.js` | Data-manager attachment, selected-tracker adoption and camera-entry listeners |
+| `displayBindings.js` | Keyboard/display subscriptions and frame-rate monitor lifetime |
+| `shareRestoration.js` | Initial share/layer restoration and cancellation |
+| `shellFeedback.js` | Loading feedback, notices and toast lifetime |
+
+Owners receive named services, elements, operations and readers. They do not
+receive the application shell itself. Readers resolve a replaceable collaborator
+at use time; operations cross an ownership boundary without copying its state.
+The facade exposes existing properties as delegates rather than duplicate state.
+
+Shutdown has two phases. First revoke input, deferred navigation, camera-entry
+listeners, lookups, timers and rendering work. Then await Context restoration,
+release sensor overrides while the manager is still attached, detach layer
+services and destroy scene resources. Late callbacks cannot acquire the camera.
+Manager replacement also releases subscriptions and the previous Directions
+module even if the replacement does not provide a Directions layer.
+
+Source-contract tests follow both sides of delegated wiring. Lifecycle tests
+exercise pending reset cancellation, stale camera callbacks, replacement and
+idempotent teardown. Browser acceptance covers the composed application, including
+share restoration, scene commands, navigation, Cockpit, display and voice.