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Sessions

Contop persists your interaction history across app restarts so you can review past sessions and resume context.

Session Persistence​

Sessions are stored on-device using AsyncStorage:

  • Session index - Metadata array at @contop:session_index (session ID, name, timestamp, entry count, model used, connection type, tool stats)
  • Session entries - Per-session entries at @contop:session:${id}:entries

Storage Optimizations​

  • Base64 image stripping - Screenshots (image_b64 metadata) are removed before persisting to prevent storage bloat (each screenshot is 300–500 KB)
  • Write debouncing - Persistence writes are debounced at 500ms intervals to avoid excessive I/O
  • Max 20 sessions - Oldest sessions are pruned automatically on startup
  • Emergency storage - A _storageFull flag prevents cascading writes when storage is nearly full. emergencyClearEntries() can nuke entry data while keeping the session index

Session History​

Access past sessions from the session menu. The history viewer supports:

  • Search - Filter sessions by name, date range (Today, This Week, All), or model used
  • Session cards - Shows title, date, entry count, and a preview of the first message
  • Resume - Tap a session to view its full execution thread

What Gets Restored​

When reopening a past session, only user_message and ai_response entries are reconstructed. Tool calls, tool results, and progress updates are not restored (they reference ephemeral server state).

Active Session​

Only one session can be active at a time (enforced in the Zustand store). Starting a new conversation creates a new session. The active session receives all incoming data channel messages and execution updates.

Related: Mobile App · State Management · Data Channel Protocol