Move scene effects and imported geometry behind the globe contract

Move Cesium viewer, map, sky, projection, trail and sonar internals into
its engine. Drive styles, bloom, sharpening and contact sonar through
engine.render. Count camera-input suspensions across all three engines
and migrate the feature callers. Preserve Cesium's effects and input
behaviour; fix transit lens clicks on Cesium and make zero sharpening on
Navara disable sharpening, as it does on Cesium.

Parse imported files into plain records and draw them through movers,
lines, ground and imagery on both engines. Follow Cesium's KML style
precedence, preserve local KMZ images and frame the drawable records.
Open overlays use imagery when the engine has no native map-overlay API.
Run every imported-display case on fake and headless Cesium engines.

The shared import path retains these known differences from Cesium's old
DataSources: wall fills, extruded prisms and gx:LatLonQuad are undrawn;
raised polygon fills drape while outlines retain altitude; GroundOverlay
rotation, altitude and RGB tint are not applied; rhumb lines become great
circles. Ground heights use the loaded surface synchronously instead of
waiting for most-detailed sampling. Supported KMZ ground overlays now
draw on Navara too. Document the limits rather than claiming full parity.

Combine batches B and C because their disjoint path manifests cannot
place the shared boundary and format files in a later commit while
keeping B independently valid. This combined commit owns the shared
docs, package boundaries, format scope, locale catalogs and coupling
baseline. Remove five obsolete import strings from all eleven catalogs.
Make the load-time source scan include new files and skip deleted paths
so the same checks work before and after recording the moves.

Coupling: Navara renderer lines fall from 1695 to 1294, Cesium import
files from 25 to 9, viewer lines from 1177 to 1026, SDK loads from 4 to 3
and engine-name lines from 62 to 42. No count grows.

The full unit suite and the boundary, format and coupling checks pass.
Browser validation remains to be run.

Browser checks to run
GOOGLE_MAPS_API_KEY= CESIUM_ION_TOKEN= npm run dev -- --port 4291
node scripts/qa-contract-suite.mjs http://localhost:4291
node scripts/qa-navara-visual-styles.mjs http://localhost:4291
node scripts/qa-navara-bloom.mjs http://localhost:4291
node scripts/qa-navara-sonar.mjs http://localhost:4291
QA_BASE_URL=http://localhost:4291 node scripts/qa-visual-effects.mjs
QA_BASE_URL=http://localhost:4291 node scripts/qa-zoom-out-guard.mjs
node scripts/qa-sky-model-lighting.mjs --url http://localhost:4291
node scripts/qa-geo-import.mjs http://localhost:4291
node scripts/qa-geo-import-regressions.mjs http://localhost:4291
node scripts/qa-geo-import-large.mjs http://localhost:4291
node scripts/qa-navara-geo-import.mjs http://localhost:4291

Use the keyless server for every check. Photoreal-only cases remain
unverified; do not enable paid tiles to run them.

docs/CODE-BOUNDARIES.md

@@ -399,10 +399,12 @@ the caller.
 ## Visual effects
 
 `ui/effects` exports the effects controller and existing preset definitions.
-It owns shader stages and their clock, with explicit render ownership callbacks.
-Construction installs no stages or frame callbacks. Stop animation before
-releasing UI consumers, then destroy to remove owned stages and restore the
-borrowed bloom state. `ui/effects/bloom` exposes the pure intensity/version helpers
+It owns transitions and their clock, with explicit render ownership callbacks,
+and writes styles, bloom and sharpening through `engine.render`. Construction
+installs no stages or frame callbacks. Stop animation before releasing UI
+consumers; controller destruction disables its effects. Cesium's
+`src/globe/cesium/postStages.js` owns stage creation and destruction and restores
+the borrowed bloom state when the engine is destroyed. `ui/effects/bloom` exposes the pure intensity/version helpers
 without loading the renderer. UI presentation and product-action coordination
 remain in their callers.
 
@@ -775,3 +777,17 @@ CSS rather than mapping machine states to universal severity. CCTV owns
 frame/source and calibration rules and their data attributes, while Weather
 owns coverage labels. The rail card keeps node identity, header focus,
 disclosure and teardown, and does not announce every card update.
+
+## Engine implementation modules
+
+Cesium's viewer construction, atmosphere compatibility, zoom-out guard, starry
+sky, map scene application, imagery and terrain live in `src/globe/cesium/`.
+The public viewer export still resolves through `package.json`. Celestial
+rendering, screen-event constants, scene projection and the legacy trail
+backend also live there. Sonar commands and post stages are engine internals;
+feature controllers call `engine.render`.
+
+Imported-file parsing (`geoFileImport.js`, `geoImportRecords.js`,
+`geoImportKml.js`) returns plain records. `geoImportDisplay.js` consumes them
+through ground, movers, lines and imagery. The UI owns file bytes, visibility
+and attachment lifetime, with no DataSource or engine-specific import backend.