feat(annotations): draw on the world by hand (#547)

Supersedes #235 by @cora-fresh-labs, ported onto the current component layout with fixes from review.

Verified before merge: format, package boundaries, unit suite, build, and the browser tracking suite; a browser harness for the change where one applies; adversarial review applied.

Future work (not in this PR): hand-drawn marks do not persist across a reload today, and neither do spoken annotations; there is no storage layer for marks. The natural home is Scenes: a drawing that belongs to a shot and persists per shot, so a scene animation can carry its own marks. Needs an owner.
Co-authored-by: Clint Borle <[email protected]>

CHANGELOG.md

@@ -115,8 +115,30 @@ of current runtime behavior, see [`docs/CURRENT-STATE.md`](docs/CURRENT-STATE.md
 
 - Separate submarine cable sources and rendering components, and export bundled geography lookup modules.
 
+### Added
+
+- DISPLAY ▸ Draw: draw on the world by hand. Pick Area, Line or Pin, click the
+  vertices, double-click or press Enter to finish, label and colour it; Backspace
+  undoes a vertex, Esc cancels the shape and a second Esc leaves draw mode, and
+  Clear wipes the board. Drawn shapes go through the same annotation engine as
+  spoken ones, so they render with the whiteboard look, persist, de-dup and clear
+  together. While you are drawing, the draw tool owns the pointer and no layer
+  selects what you click through (#235 — thanks @cora-fresh-labs).
+
 ### Fixed
 
+- Draped annotation geometry — area fills and outlines, routes and arrows —
+  classifies onto terrain as well as 3D tiles. On a keyless boot, where Cesium's
+  own globe carries the imagery, marks previously rendered their labels and no
+  geometry at all. This affected spoken annotations as much as hand-drawn ones.
+
+- A finished drawn area closes its ring, so its outline no longer misses the
+  edge back to the first vertex.
+
+- Areas measured and anchored across the antimeridian use unwrapped longitudes:
+  a shape straddling 180° reported an area thousands of times too large and
+  placed its label on the opposite side of the world.
+
 - Traffic now retries a failed destination after city navigation without a layer
   toggle. Camera departure cancels pending work, arrival checks the final view,
   and superseded requests cannot keep a newer view loading.