docs: record estimated CCTV bearings in CHANGELOG and CURRENT-STATE (#643)

Credit the contributor and describe the HUD tag, dashed wireframe and
calibration precedence for #639.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

docs/CURRENT-STATE.md

@@ -3384,6 +3384,12 @@ silently demoting every later lookup for the session.
 - **The DENSE chip reports the dense LOAD, not the catalog param.** The param flips synchronously while the Starlink shell takes seconds to arrive over a chunked load, and CelesTrak 502s that feed regularly. So the chip reads `DENSE ···` (busy, disabled) while loading, ACTIVE only once dense points are actually on screen, and `DENSE ✕` with the reason on hover when the load fails — a failure also reverts `catalog` to `core`, drops any partial chunk, and leaves the chip clickable to retry. A load is judged by points added, not by HTTP status: a 200 carrying an empty body, a passed-through HTML error page, or only TLEs the core catalog already owns fails with the same revert semantics as a 502. Any explicit request for `core` clears a latched error even when the mode does not change, so a Space Missions restore of an already-core snapshot never leaves the user with a failure they did not cause. Because the load settles asynchronously, the layer pushes a re-render through the optional `setRowControlsListener()` hook; nothing else would repaint that row before the 5-minute catalog refresh, so the count and legend would otherwise sit stale.
 - **A dependency owner takes the row with it.** Space Missions borrows this layer for TLE lookup with `showPoints:false`; while points are hidden the layer returns empty row controls, so the legend never describes an empty sky and the chip cannot accept a write that the owner's restore would silently revert.
 - The detection-overlay record cache (`_detectionObjects`) is cleared with the catalog on every rebuild: it stamps id/class at creation only, and a rebuild can re-tag a satellite when a partial CelesTrak outage changes which group wins dedupe.
+- **CCTV estimated bearings:** a camera whose pack marks `headingConfidence: 'low'` (the id-hash
+  `fallbackHeadingFromId` bearing) shows `HDG n° (ESTIMATED)` in the HUD and draws its coverage
+  wireframe dashed; colours, widths and active/idle emphasis are unchanged. A manual calibration
+  (`calSource: 'manual'`) or curated pose (`poseSource: 'curated'`) is never presented as
+  estimated, matching the CAL badge. Public camera state carries `headingConfidence` and
+  `headingEstimated` (`src/layers/cctv/headingConfidence.js`, #639).
 - **FIRMS**: no ground clamping (zero 3D-tiles height sampling), ≤18 screen-decluttered ambient labels, click-to-inspect detail card, 2.5k/3k sprite budgets viewport-clipped by FRP.
 - **CCTV v2 foundation:** a pitched
   frustum wireframe (4 corner rays + far-cap rectangle) with a monitor plane at the frustum's