Add a CI job running the maintain.sh uv-secure scan, pinned to the gate by
a parity test, and a SECURITY.md with private reporting and dependency
remediation. Refresh the security-gate block record for accelerate 1.15.0.
Closes#114
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Repair image and metadata publication contracts, detection routing, research
artifact validation, release verification, and the published agent skill.
Refresh the dependency lock and reconcile documentation with verified behavior.
Add regression coverage and record the completed audit and corrected VideoSeal
measurements. Preserve the existing Accelerate and Lightning versions.
Validation: Ruff and Pyright pass; 2358 tests pass with 3 skipped. The maintenance
gate exits 2 on the documented Accelerate and Lightning security findings.
