Merge origin/main into fix/ais-unavailable-sog-cog

# Conflicts:
#	CHANGELOG.md
#	docs/CURRENT-STATE.md

CHANGELOG.md

@@ -4,6 +4,27 @@
   unknown instead of 102.3 knots and 360 degrees. Genuine readings, including a
   stopped vessel's zero and the highest encodable values, are unchanged.
 
+- Render native `<select>` option lists in the dark UI palette. The closed
+  controls were already skinned, but the browser-painted popups fell back to the
+  platform light palette, leaving near-white option text on a white surface in
+  the HUD layout, Scenes, CCTV camera, Radio filter and Draw colour menus.
+
+- Credit adsbdb, which supplies the aircraft type, model name and registration
+  on enriched flights and the airline and origin/destination pair behind the
+  tracked contact's route strip. `DATA_SOURCES.md` now records adsbdb's
+  published credits and route-data restriction, along with the request bounds
+  and gitignored 24-hour local cache. A matching `DATA_CREDITS` entry surfaces
+  the credit in the in-app Data attribution popover, and a test protects it
+  against accidental removal.
+
+- Size the TomTom daily tile budget to the provider's real free allowance.
+  `TOMTOM_DAILY_TILE_BUDGET` defaulted to 40,000/day against an allowance
+  granted monthly (200,000 tile requests/month), exhausting a month in five
+  days and leaving the traffic layer dead for the rest of the period. The
+  default is now 6,000/day (186,000 over a 31-day month). Corrects the stale
+  "~50k/day" free-tier figure in the proxy, `.env.example` and
+  `DATA_SOURCES.md`. Still an application-side ceiling, not a billing cap.
+
 - Distinguish PARTIAL vessel snapshots from STALE data in the layer panel, with
   accepted-record counts and unchanged retention, freshness and outage safeguards.