refactor: drive share, location and scene controls through product state

CHANGELOG.md

@@ -13,6 +13,10 @@ of current runtime behavior, see [`docs/CURRENT-STATE.md`](docs/CURRENT-STATE.md
 
 ## [Unreleased]
 
+- Drive share updates, Location feedback and Scene controls through immutable state snapshots and disposable subscriptions.
+- Keep stale lookup/load completions from publishing accepted results and retain shot rows during playback progress updates.
+- Export the existing Scene director with explicit playback and editing outcomes.
+
 - Separate UI assembly from standalone engine wiring, with dedicated panel layout, position, notice and recording owners.
 - Stop pending UI presentation and drag work during disposal; preserve accessible status text when stopping its decoration.
 - Organize component styles behind the same ordered stylesheet entry and include 3D model controls in the current-state snapshot.