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fix: rock-solid idle detection in respawn controller

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- Add 300-char rolling window to catch working patterns split across PTY chunks
- Check completion message BEFORE working patterns (priority fix)
- Clear rolling window on completion message (transition point)
- Increase working pattern absence threshold from 3s to 8s
- Add Session.isWorking safety check before confirming idle
- Add 20+ more working patterns (Compiling, Building, Processing, etc.)
- Make AI idle checker prompt more conservative (err toward WORKING)
- Update documentation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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arkon
2026-01-26 00:55:29 +01:00
co-authored by Claude Opus 4.5
parent 5b87a41aac
commit 9aa5973970
21 changed files with 2561 additions and 360 deletions
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docs/respawn-state-machine.md
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@@ -46,10 +46,15 @@ After sending each step (update, clear, init, kickstart), the controller waits f
## Idle Detection (Multi-Layer)
1. **Completion message**: Primary signal - detects "Worked for Xm Xs" time patterns (requires "Worked" prefix to avoid false positives)
2. **AI Idle Check** (enabled by default): Spawns a fresh Claude session in a screen to analyze terminal output and provide IDLE/WORKING verdict. Uses `claude-opus-4-5-20251101` by default, sends last 16k chars of terminal buffer. Timeout 90s, cooldown 3min after WORKING. Auto-disables after 3 consecutive errors.
2. **AI Idle Check** (enabled by default): Spawns a fresh Claude session in a screen to analyze terminal output and provide IDLE/WORKING verdict. Uses `claude-opus-4-5-20251101` by default, sends last 16k chars of terminal buffer. Timeout 90s, cooldown 3min after WORKING. Auto-disables after 3 consecutive errors. The AI prompt is conservative: when in doubt, it answers WORKING.
3. **Output silence**: Confirms idle after `completionConfirmMs` (10s) of no new output
4. **Token stability**: Tokens haven't changed
5. **Working patterns absent**: No `Thinking`, `Writing`, spinner chars
5. **Working patterns absent**: No `Thinking`, `Writing`, spinner chars, etc. for at least 8 seconds
6. **Session.isWorking check**: Final safety - if the Session class reports `isWorking=true`, idle confirmation is rejected
**Working Pattern Detection**:
- Uses a rolling 300-character window to catch patterns split across PTY chunks
- Patterns include: Thinking, Writing, Reading, Running, Searching, Editing, Creating, Deleting, Analyzing, Executing, Synthesizing, Compiling, Building, Processing, Loading, Generating, Testing, Checking, Validating, and spinner characters
Uses `confirming_idle` state to prevent false positives. Cancels idle confirmation if substantial output (>2 chars after ANSI stripping) arrives during the wait. Fallback: `noOutputTimeoutMs` (30s) if no output at all. AI check is triggered after the no-output fallback; if AI check is disabled/errored, falls back to direct idle confirmation.