55962bd29b
Moves the report to docs/infrastructure/runner-investigation.md with the
requested structure (evidence, experiments, hypothesis, confidence, required
infrastructure changes, why application code is no longer suspected).
Decisive new experiment: the suite was run from a clean `git archive HEAD`
tree — byte-identical to CI's checkout, without the gitignored runtime dirs
(jobtracker.db, keys/, CvArtifacts/, backups/) that earlier local runs had
silently included. 10/10 pass in 1s. That removes the last difference between
the local tree and the runner, eliminating application code (~95% confidence).
Also establishes, by route probe, that production is healthy but stale:
/api/public-cv/{unknown} returns 404 locally (route exists, AllowAnonymous) but
401 on prod, same as a nonsense path — PublicCvController is absent, so Phase 4
and Phase 5 have never deployed. Production therefore never ran the faulty
migration: no half-built tables exist there and no data cleanup is needed.
Deploy is a second, separate infrastructure failure: the first attempt reached
deploy.sh (37s, consistent with the MariaDB crash since fixed), every attempt
since dies at 3s at SSH connection time while the host serves traffic normally.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>