ci-e2e-time-tune
Tune literal `register_cuda_ci(est_time=...)` values in `tests/e2e` from complete GitHub Actions logs produced by `ci-fetch-log`. Use when asked to calibrate E2E timing estimates, produce an evidence-backed runtime CSV, or apply estimate-only changes. Aggregate passed samples by test file, apply a 1.25 safety factor with mandatory upward bucket rounding, and never commit or push changes.