* Revert "Restore cached conversations before reconnecting (#4421)"
This reverts commit 1c51b52d07.
* fix(app): restore provider loading on native
* fix(app): preserve native navigators across appearance changes
Reapply the isolated appearance boundaries and native menu transform origin from #4421 so appearance hydration preserves native navigator and gesture host lifetimes.
* fix(app): retain cached baselines during live updates
Read the timeline concurrently with agent preparation and reconcile display-only cache rows beneath the live head using the existing reducer. Merge cached directory entries beneath live state while preserving the existing checkpoint race guard.
* fix(app): restore cached conversations before reconnecting
Give each host one timeline write authority so cache restores, live events and fetched pages publish consistent rows and coverage. Persist a moving 40-entry restart page independently of loaded scrollback, and keep native navigation mounted while startup settings hydrate.
* fix(app): recover cache writes after initialization failures
Keep accepted writes pending and retry initialization without another UI update. Publish the storage index only after loading succeeds, while queued host identity changes still settle in order.
* test(app): wait for sidebar and workspace transitions
Viewport intersection and leaving the creation route can precede completed UI transitions. Wait for the layering hit test and selected agent tab before asserting or navigating again.
* fix(app): restore provider loading on native clients
The native AbortSignal lacks throwIfAborted, so successful provider responses failed before reaching every model selector. Preserve both cancellation boundaries using the supported aborted property and the existing query cancellation error.
* fix(app): paint cached conversations before reconnect
Cold startup restored every saved host before publishing any session, so a valid cached chat was blocked behind unrelated directory validation and network-only readiness. Directory and timeline owners now resolve demand through typed storage and authoritative reconciliation while consumers remain source-agnostic.
* fix(app): stabilize demand-driven cache restore
Create host projections before network availability, route cached workspace and timeline preparation through their owners, and coalesce directory reconciliation per online connection. Update browser cache fixtures for per-agent timeline rows.
* fix(app): resume cached timeline through owner
* fix(app): surface timeline owner load errors
Ship the platform storage engines behind a dark interface so the cache migration can wire them separately. Both engines share a contract, including atomic writes and destructive schema-version resets.
Mohamed Boudra