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voicebox/tauri
James PineandClaude Opus 4.7 239523d797 fix(mcp): idle timeout + escalating backoff for speak-SSE monitor
Two reliability gaps in the /events/speak subscriber:

1. resp.chunk().await had no idle timeout. A backend that accepts the
   TCP connection but stops producing frames (deadlocked SSE endpoint,
   zombie process) would block the task forever without reconnecting.
   The pill window would never surface for agent-initiated speech and
   there would be nothing to log. Backend emits a `:ping` heartbeat
   every 15 s, so 45 s without any data is now treated as a dead
   stream — the task errors out and the reconnect loop takes over.

2. Flat 2 s backoff escalates nowhere. Logs fill with reconnect lines
   when the backend is down for minutes, and a backend that accepts +
   immediately closes connections (no data) spins the loop tightly.
   Backoff now escalates 500 ms → 30 s on unproductive rounds and
   resets only when at least one frame arrives (the connection was
   genuinely productive, not just accepted).

Co-Authored-By: Claude Opus 4.7 (1M context) <[email protected]>
2026-04-23 19:18:41 -07:00
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