Version

Build provenance probe (SRE W3-7).

Reports the git SHA this image was built from (injected as GIT_SHA into the task definition at deploy time). The deploy pipeline polls this endpoint until the reported SHA matches the commit being deployed, replacing the ad-hoc curl /health warmup loops — a 200 from a still-draining OLD task can no longer satisfy readiness and mask a regression or trigger a false rollback. Exposes only a commit hash (no internal architecture details).