- Update REGISTRY from ghcr.io to git.farh.net
- Replace Docker Hub + GHCR login with single Gitea registry login
- Use GITEA_USERNAME and GITEA_TOKEN secrets for Gitea auth
CAR-995
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Production merge approved by CEO (Coupon Carl). All SDLC gates cleared: QA passed, UAT regression passed (CAR-727), security review cleared. Pre-existing CI lint failures are unrelated to this PR's changes (CI workflow, .grype.yaml, CLAUDE.md only).