feat(ui): tilt and north-up compass controls (#571)

Supersedes #442 by @yashveeeeeeer, 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.

Co-authored-by: Yashveer Singh <[email protected]>

CHANGELOG.md

@@ -163,6 +163,15 @@ of current runtime behavior, see [`docs/CURRENT-STATE.md`](docs/CURRENT-STATE.md
 
 ### Added
 
+- Two map-orientation controls sit beside Share in the top-center globe
+  actions. Tilt Map swings between a straight-down map and a 35-degree oblique
+  around the point under the centre of the view, keeping that point and the
+  distance to it. North Up rotates around the same point until north is at the
+  top, keeping the pitch, and its needle shows the current bearing. Both decline
+  without moving the camera when nothing is under the centre of the view, and
+  both follow Reset Globe out of Clean UI, recording, Scene playback and Cockpit
+  (#442 — thanks @yashveeeeeeer).
+
 - Add Open Calgary traffic cameras as a keyless CCTV source pack (thanks
   @rileygramlich): the public City of Calgary catalog, frames pinned to the
   city's own host and upgraded to HTTPS, with the Open Government Licence –