`/exit code line anywhere in the 50-line tail.\\n\\nRun 32089118620 (same workflow, ~3.5h earlier) also failed but its step-level logs were unavailable during this investigation pass (transient API connectivity issue) — confirmed only via run metadata that it failed at the same workflow.\\n</details>\\n\\n### Probable root cause\\n\\nTimeout/hang signature, not a clean failure: the CLI process appears to be killed while blocked on a large-diff `Read`, and nothing in the workflow surfaces that as a distinguishable error — the log just goes silent.\\n\\n### Proposed remediation\\n\\n1. Add an explicit step-level timeout with a clear `##[error]` message when the Claude Code CLI step exceeds its budget, instead of a bare kill.\\n2. Cap or paginate the diff size handed to the agent — large `Read` calls on `pr.diff` are the apparent hang point in both failures.\\n3. Watch the next few Design Decision Gate runs for size-correlation; add a diff-size guard before invoking the gate if confirmed.\\n\\n### Success criteria\\n\\nDesign Decision Gate runs complete (pass or fail) without silent mid-tool-use termination; timeouts show an explicit error in logs; similarly-sized PR diffs no longer trigger the hang.\\n\\n**Parent:** #53129\\nRelated to #53129\\n\\n\\n\\n\\n> Generated by [🔍 [aw] Failure Investigator (6h)](https://github.com/github/gh-aw/actions/runs/32109525808) · agent · 251.3 AIC · ⌖ 6.96 AIC · ⊞ 5.9K · [◷](https://github.com/search?q=repo:github%2Fgh-aw+is:issue+%22gh-aw-workflow-call-id:+github%2Fgh-aw%2Faw-failure-investigator%22&type=issues)\\n> - [x] expires on Aug 24, 2026, 11:21 PM UTC-08:00\\n\\n\\n\\n\\n\\n\\n---\\n\\n### Correction — this is not a silent hang, it's a 429 invocation-cap failure. Keep this open.\\n\\n**One-sentence rationale:** Design Decision Gate's run today fails fast and loud with `Maximum LLM invocations exceeded (30 / 30)`, a non-retryable rate-limit guard — not the silent hang this issue currently describes.\\n\\n**Fresh occurrence (2026-08-20):** Design Decision Gate — [§32394421229](https://github.com/github/gh-aw/actions/runs/32394421229). Claude Code CLI harness logs confirm `isRateLimitError=true` and treat the condition as non-retryable, terminating the run immediately once the 30-invocation cap is hit.\\n\\n**Why this stays open:** no commit since this issue opened has touched this workflow's `.md`/`.lock.yml` with a targeted fix — the one nearby commit doesn't address the invocation cap. Not closing per the tool-denial-limit rule.\\n\\n**Proposed remediation:** raise the per-run LLM invocation cap for this workflow, or split its task into smaller steps so it stays under 30 invocations. Update the issue title/description to reflect the real failure mode (429 cap, not hang) so future triage isn't misled.> Generated by [🔍 [aw] Failure Investigator (6h)](https://github.com/github/gh-aw/actions/runs/32406250112) · agent · 238.8 AIC · ⌖ 7.28 AIC · ⊞ 5.9K · [◷](https://github.com/search?q=repo:github%2Fgh-aw+is:issue+%22gh-aw-workflow-call-id:+github%2Fgh-aw%2Faw-failure-investigator%22&type=issues)\\n\\n\\n\\n---\\n\\n### Update (2026-08-22) — reproduced again today, keep this open\\n\\nDesign Decision Gate failed at the \\\"Execute Claude Code CLI\\\" step again: [§32548469031](https://github.com/github/gh-aw/actions/runs/32548469031) (2026-08-22 03:15 UTC). Given the prior correction on this issue (2026-08-20) established the real failure mode as the 30/30 LLM-invocation cap (`Maximum LLM invocations exceeded`), not a silent hang, today's recurrence is most likely the same cap being hit again rather than a new hang — but I could not confirm the exact error line for this run: `gh run view`/log download hit transient `api.github.com` connectivity errors during this investigation pass, same class of gap noted for run 32089118620 earlier in this issue's history.\\n\\nNot closing — no commit since this issue opened touches `design-decision-gate.md`/`.lock.yml` with a fix for either the invocation cap or the diff-size hang theory, so the und

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"

"The ubuntu-latest label will migrate to Ubuntu 26 beginning October 19, 2026. For more information, see https://github.com/actions/runner-images/issues/14748"