FFT Debug

Use this skill for incident triage and deterministic debugging of FFT_nano host and container paths.

When to use this skill

• Use when runtime behavior is failing, degraded, or inconsistent.
• Use when investigating provider wiring, routing, logs, or IPC state.
• Use when producing reproducible triage output before any fix attempt.

When not to use this skill

• Do not use as the default path for normal feature work.
• Do not use when the request is purely product behavior, not incident/debug.
• Do not use to justify destructive cleanup without explicit approval.

Guardrails

• Never use destructive git commands unless explicitly requested.
• Preserve unrelated worktree changes.
• Keep admin/coder controls in main chat only; do not bypass main-chat restrictions.

Fast Triage

1. Confirm single instance lock:
   • ls -la data/fft_nano.lock
2. Check startup/runtime logs:
   • tail -n 200 logs/fft_nano.log
   • tail -n 200 logs/fft_nano.error.log
3. Check per-group container logs:
   • ls -la groups/<group>/logs
   • tail -n 200 groups/<group>/logs/*
4. Inspect registration + IPC state:
   • cat data/registered_groups.json
   • find data/ipc -maxdepth 3 -type f

Common Failure Modes

• Provider key missing: Pi reports no models available.
• Wrong PI_API/PI_MODEL: model/provider not found.
• Multiple bot instances: Telegram getUpdates conflict.
• Docker daemon unavailable or runtime permission issues.

Recommended Debug Commands

• Build/runtime checks:
  • npm run typecheck
  • npm test
• Dry-run routing check (no live model call):
  • FFT_NANO_DRY_RUN=1 ./scripts/start.sh dev telegram-only
• Runtime detail logging:
  • LOG_LEVEL=debug ./scripts/start.sh dev telegram-only

Telegram Debug Path

• Verify bot token present at runtime.
• In bot DM: /id, /status, /help.
• Admin checks in main chat only: /tasks, /groups, /panel, /coder, /coder-plan.
• If /main <secret> fails, verify TELEGRAM_ADMIN_SECRET and restart.

Container Runtime Debug

• Docker runtime:
  • docker info
  • docker ps
• Host runtime (unisolated):
  • verify explicit flags: CONTAINER_RUNTIME=host, FFT_NANO_ALLOW_HOST_RUNTIME=1

Database/State Debug

• SQLite file location: store/messages.db
• Router state: data/router_state.json
• Group registry: data/registered_groups.json
• Per-group Pi state: data/pi/<group>/.pi/