Merge branch 'main' into denis/gev-news-layer

docs/CURRENT-STATE.md

@@ -5314,8 +5314,11 @@ visual inspection.
 **Appearance.** Normal fleet frames are 20 px, growing to 30 px on selection;
 CRT, NVG, thermal and noir frames are 26/39 px. Source rasters are 48/96 px before padding.
 External halos are 1/1.5 px in normal, 1.25/1.25 px in CRT and 2/2 px in sensors, calculated from the
-final unpadded display size. Six modes, two sizes and three profiles cap the
-raster cache at 36 variants. Normal mode colours are bus `#5EF08A`, tram
+final unpadded display size. Each mode has an outline with a front (a nose, a
+bow or a chamfered cab) for a vehicle with a known course and a symmetric
+outline for one without, which would otherwise sit at rotation 0 and point
+north; a vehicle switches to the pointed glyph when a course arrives. Six modes, two sizes, three
+profiles and the two outlines cap the raster cache at 72 variants. Normal mode colours are bus `#5EF08A`, tram
 `#FFC24A`, subway `#FF4538`, rail `#D9A6FF`, ferry `#5FD6FF`, and unknown
 `#D8DDE5`. Selection keeps the mode colour. Sensors reuse each normal silhouette's exact
 outer path, filled opaque white without interior panel lines, with an opaque
@@ -5792,7 +5795,7 @@ silently demoting every later lookup for the session.
 
 ### Motion & Symbology Correctness (June 10, 2026)
 
-- **Flights (commercial + military)** render one poll interval behind real time (30s/15s) and interpolate between two known feed-stamped fixes (OpenSky `time_position`; adsb.lol `receipt − seen_pos`). The display latency is an intentional product decision — do not "fix" it away. The fleet dead-reckons at ~12Hz (1m² write gating); a contact already hidden behind the horizon whose last position still is re-reckons on a staggered one-in-13-ticks rotation (about once a second) instead, so the worldwide feed's ~13k contacts no longer cost a full pass when well under 1% are on screen. Anything that position puts in view, and any contact with a fleet model, takes the full pass immediately, and hidden-inclusive proximity queries read positions at most about a second old; aircraft get a 3-poll grace period (faded icon) before removal, except the tracked aircraft, which is kept until 10 minutes after its newest fix. When a position epoch pauses, both layers coast for five minutes on the last speed and heading (at most 1,500 kt), then stop dimmed as SIGNAL LOST; contacts on or near known ground hold instead. Source backoff marks each contact and the cockpit `STALE`; the cockpit then holds the exact layer position instead of continuing inertial flight. Repeated-position kinematic changes create a forward-only synthetic fix rather than mutating history, and grounded history is lifted only when no owned 3D model already controls its datum. A nominally successful worldwide OpenSky response whose own snapshot epoch is more than two minutes old prefers the existing 250-nm viewport-scoped adsb.lol fallback and labels the source/coverage accordingly when that upstream is available. If the fallback is also unavailable, the layer's freshness/error fields use the source epoch—never the cache receipt time—so the UI reports an old snapshot rather than “just now.”
+- **Flights (commercial + military)** render one poll interval behind real time (30s/15s) and interpolate between two known feed-stamped fixes (OpenSky `time_position`; adsb.lol `receipt − seen_pos`). The display latency is an intentional product decision — do not "fix" it away. The fleet dead-reckons at ~12Hz (1m² write gating); a contact already hidden behind the horizon whose last position still is re-reckons on a staggered one-in-13-ticks rotation (about once a second) instead, so the worldwide feed's ~13k contacts no longer cost a full pass when well under 1% are on screen. Anything that position puts in view, and any contact with a fleet model, takes the full pass immediately, and hidden-inclusive proximity queries read positions at most about a second old; aircraft get a 3-poll grace period (faded icon) before removal, except the tracked aircraft, which is kept until 10 minutes after its newest fix. When a position epoch pauses, both layers coast for five minutes on the last speed and heading (at most 1,500 kt), then stop dimmed as SIGNAL LOST; contacts on or near known ground hold instead. Source backoff marks each contact and the cockpit `STALE` and dims the tracked aircraft, as a missed update does; the cockpit then holds the exact layer position instead of continuing inertial flight. Repeated-position kinematic changes create a forward-only synthetic fix rather than mutating history, and grounded history is lifted only when no owned 3D model already controls its datum. A nominally successful worldwide OpenSky response whose own snapshot epoch is more than two minutes old prefers the existing 250-nm viewport-scoped adsb.lol fallback and labels the source/coverage accordingly when that upstream is available. If the fallback is also unavailable, the layer's freshness/error fields use the source epoch—never the cache receipt time—so the UI reports an old snapshot rather than “just now.”
 - **World-space headings at every angle** (`src/data/iconOrientation.js`): aircraft/vessel icon rotation uses the camera right/up basis per tick (alignedAxis always ZERO), which is exact at screen center and for orthographic/nadir views and remains stable through >180° tracked orbits. Perspective rays vary across the viewport, so off-center contacts at oblique pitch can diverge from an exact finite-difference window projection; a regression test pins that known regime, and field evidence decides whether to adopt exact projection with the basis method as fallback. Fleet rotations refresh on camera-pose change; tracked entities per frame. Billboards are horizon-culled via a shared EllipsoidalOccluder.
 - **Military/OpenSky reconciliation** (`src/data/militaryRegistry.js`): known-military ICAOs render amber in the flights layer (60s self-poll of the cached mil endpoint when the military layer is off) and are suppressed there while the military layer renders them.
 - **Satellites**: core catalog from CelesTrak's stations, visual, GPS, GLONASS, Galileo, GEO, resource, weather, planet, SAR and science groups, tracking lands ~726km out via `viewFrom` (tracked entity owns a point graphic so the tracking camera engages), rings realign via primitive modelMatrix (no per-second rebuild flicker), optional `setParams({catalog:'dense'})` Starlink mode.