fix: flush messages before session switch to prevent data loss

Matthias Nott

2026-03-22 0b9d8a65740476ad40616cfd779963460999ff00

fix: flush messages before session switch to prevent data loss

 TODO.md
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@@ -14,10 +14,14 @@
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 - Deliver transcript + images together as one message to Claude
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 - Ensures voice prefix sets reply channel correctly
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-### Push Notifications (iOS APNs)
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-- Notify when messages arrive while app is backgrounded/closed
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-- Requires Apple Developer Portal APNs key setup
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-- Server-side message queue for offline delivery
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+### Push Notifications (iOS APNs) — NEXT SESSION with user at computer
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+- **Step 1**: User creates APNs key in Apple Developer Portal (needs login)
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+- **Step 2**: Save `.p8` key to `~/.aibroker/apns-key.p8`, add env vars (key ID, team ID)
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+- **Step 3**: Server-side APNs HTTP/2 sender (`src/daemon/apns.ts`) with JWT auth
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+- **Step 4**: App sends device token on WebSocket connect
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+- **Step 5**: Gateway buffers messages when no WS clients, sends push notification
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+- **Step 6**: App receives push → user taps → opens app → catch_up drains messages
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+- Optional: silent push to wake app briefly for critical messages
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 ### App Name Renaming (Runner → PAILot)
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 - Rename Xcode target from Runner to PAILot (like Glidr did)
 lib/providers/providers.dart
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@@ -92,9 +92,10 @@
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   /// Switch to a new session and load its messages.
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   Future<void> switchSession(String sessionId) async {
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-    // Save current session before switching
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+    // Force-flush current session to disk before switching
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     if (_currentSessionId != null && state.isNotEmpty) {
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       MessageStore.save(_currentSessionId!, state);
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+      await MessageStore.flush();
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     }
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     _currentSessionId = sessionId;