PR Pipeline — Authorize → Validate → Review → Merge / auth (pull_request) Successful in 9s
PR Pipeline — Authorize → Validate → Review → Merge / validate (pull_request) Successful in 12s
PR Pipeline — Authorize → Validate → Review → Merge / lint (pull_request) Successful in 11s
PR Pipeline — Authorize → Validate → Review → Merge / ai-review (pull_request) Successful in 4s
PR Pipeline — Authorize → Validate → Review → Merge / gate (pull_request) Successful in 1s
1. Add disk-gc-threat-response to case statement (was only in header comment, hit *) branch and exited 2 silently). Mapped to scripts/disk-gc-scan.py per contract's Execution section. 2. Apply timeout to script invocation (was defined as TIMEOUT=600 but never used, so a hung check blocked the cron slot forever). Now wrapped with timeout, and exit 124 (timeout kill) logs a TIMEOUT line before the FAIL verdict. 3. Send alert on exit-2 paths (unknown contract and missing script). Both paths previously just echoed and exited, so a typo'd name or absent script was a silent monitoring loss. Now they send the same Zulip DM as a failed check. Proved all four paths with raw output: - unknown contract: curl -sf attempted, exit 22 on HTTP 401 - missing script: curl -sf attempted, exit 2 - disk-gc-threat-response: resolves to disk-gc-scan.py, runs, PASS - stub sleep > timeout: TIMEOUT line logged, exit 1, alert failure recorded