docs: point remaining src/ui.js references at their owners

The README source tree now lists src/ui/ instead of the removed
src/ui.js. docs/CODE-BOUNDARIES.md names src/ui/applicationShell.js as
the owner of panel layout, persistence and share restoration, and
docs/CURRENT-STATE.md places GLOBAL_POST_DEFAULTS in
src/ui/visualPresets.js. QA script comments and test assertion messages
that still named ui.js are updated the same way.

docs/CODE-BOUNDARIES.md

@@ -235,7 +235,7 @@ DOM elements and callbacks; importing it creates no browser state. `destroy()`
 removes owned listeners and cancels pending work without changing saved state
 or moving focus. Call it before removing or replacing the controls.
 
-`src/ui/composition.js` retains panel layout, persistence, share restoration and application
+`src/ui/applicationShell.js` retains panel layout, persistence, share restoration and application
 reactions to state changes. Map Source selection and Location draft cleanup are
 provided through callbacks. The component imports no globe, data, application
 or server modules. Package checks and scoped formatting cover this entry.

docs/CURRENT-STATE.md

@@ -5373,7 +5373,7 @@ demand with square-root demand scaling and semantic layer weights
 (`labelArbiter.js:181`). First-run default: ELASTIC.
 
 **A default has THREE surfaces, and a PARSE fallback that is not one of them.**
-The value literals (engine constant, markup value, markup readout, `ui.js`
+The value literals (engine constant, markup value, markup readout, `src/ui/visualPresets.js`
 `GLOBAL_POST_DEFAULTS`, the share generator's starting state) must all move
 together, because a fresh boot runs no restore and those literals ARE the startup
 state. The `scf` / `ko` PARSE fallbacks deliberately do NOT move: they answer
@@ -5421,7 +5421,7 @@ easier to meet (detection is now on more often), but does not create it.
 - **Detection OUTSIDE opacity: `1%`** (moved `5% → 3% → 1%` on 2026-08-24).
   `KEYHOLE_OUTSIDE_OPACITY_DEFAULT` in `src/celestialRing.js`, mirrored by
   `#detection-opacity-slider`'s markup value AND readout,
-  `GLOBAL_POST_DEFAULTS.detectionOutsideOpacityPct` in `ui.js`, and
+  `GLOBAL_POST_DEFAULTS.detectionOutsideOpacityPct` in `src/ui/visualPresets.js`, and
   `_detectionOutsideOpacityPct` in `sharelink.js`. The slider's `step` is now
   `1`, so 1–4 % are reachable at all (at the previous step of 5 the entire
   sub-default range was one stop wide). `AIRCRAFT_BRACKET_FLOOR_ANCHOR` in