Loop Budget Guard

Run at the start and end of every loop iteration.

Start of run

1. Read loop-budget.md for daily caps and kill-switch flags.
2. Read recent entries in loop-run-log.md (last 24h).
3. Sum tokens_estimate for the active pattern today.
4. If spend ≥ 80% of the pattern's daily cap → report-only mode (no sub-agents, no auto-fix).
5. If spend ≥ 90% and High Priority items remain in STATE.md, yield to the budget-negotiator skill (if installed). Otherwise, if spend ≥ 100% or loop-pause-all is set → exit immediately with a one-line note in STATE.md.
6. If watchlist/state has no actionable items → exit in <5k tokens (do not spawn sub-agents).

End of run

Append one JSON object to loop-run-log.md: