#66373 swapped GITHUB_TOKEN -> AUTOFIX_BOT_PAT across the workflows and
#66577 restored the `|| github.token` fork fallback for detect-changes and
the label gates -- but it missed the ci-timings "Collect timings and
generate report" step, which still passes a bare AUTOFIX_BOT_PAT. On fork
PRs that PAT is empty, so timings_report.py hard-fails at
expect_env("GITHUB_TOKEN") before it can reach its own "degraded run must
never redden the PR" soft-fail path. Every fork PR gets a red run from this
advisory job (e.g. #66573).
- ci.yml: apply the same `secrets.AUTOFIX_BOT_PAT || github.token` fallback
to the timings step. github.token has `actions: read`, enough to read the
run's job/step durations on forks.
- timings_report.py: treat a missing/empty GITHUB_TOKEN as a degraded run
(TimingsUnavailable) instead of a hard ValueError, so this whole class of
failure can never redden a PR again even if a future workflow drops the
token. Still writes no JSON, so no empty baseline is ever cached.
ecd54a001e