Session/project sidebar empty after app crashed, relaunch blocked by file lock, force-kill + relogin

Environment: Windows 11, Claude Code desktop app (installed via WindowsApps, Claude_1.32352.0.0_...)

What happened:

1. The app closed itself unexpectedly/randomly — not a hang, it just quit.
2. Trying to relaunch it immediately failed with a dialog: "Another program is currently using this file" (pointing at a file under C:\Program Files\WindowsApps\Claude_1.32352.0.0_...).
3. I had to force-kill the leftover Claude process via Task Manager before the app would launch again.
4. On relaunch it prompted a fresh login. After logging back in, the project/session sidebar was empty except for one stray entry — all prior session history across my projects had disappeared from the UI.

What I verified:

• The raw local session transcripts under ~/.claude/projects/<project>/*.jsonl are all still present and intact on disk — nothing was deleted locally, including sessions from the same day as the crash.
• Calling the session-management tool (list_sessions, include_archived: true) from within the app returns zero sessions, including no archived ones — so the account-linked session registry the sidebar reads from appears to have been reset or desynced, not just filtered.
• The workspace/account shown post-relogin matches the one used before the crash.

Impact: Session history appears lost from the UI/registry even though the underlying data survives on disk — this looks like a sync bug triggered by the crash + stale file lock + forced relaunch, not actual data loss. There's no in-app way to reconcile local .jsonl files back into the session registry.

Ask:

1. Can the leftover-process file lock on relaunch be handled more gracefully (auto-detect and offer to end the stale process)?
2. Is there a way to re-sync/re-import local session transcripts into the account-side session registry after this kind of desync?