The observer's Haiku subprocess cannot access files outside the project
sandbox (/tmp/ for observations, ~/.claude/homunculus/ for instincts).
Adding --allowedTools "Read,Write" grants the necessary file access
while keeping the subprocess constrained by --max-turns and timeout.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Three fixes for the positive feedback loop causing runaway memory usage:
1. SIGUSR1 throttling in observe.sh: Signal observer only every 20
observations (configurable via ECC_OBSERVER_SIGNAL_EVERY_N) instead
of on every tool call. Uses a counter file to track invocations.
2. Re-entrancy guard in observer-loop.sh on_usr1(): ANALYZING flag
prevents parallel Claude analysis processes from spawning when
signals arrive while analysis is already running.
3. Cooldown + tail-based sampling in observer-loop.sh:
- 60s cooldown between analyses (ECC_OBSERVER_ANALYSIS_COOLDOWN)
- Only last 500 lines sent to LLM (ECC_OBSERVER_MAX_ANALYSIS_LINES)
instead of the entire observations file
Closes#521
