Stability checkpoint UI — CI runner consolidation CI fixes : - Route all jobs to macbook-local (group-level runner 52880082). Previous main pipelines failed with ci_quota_exceeded on SaaS shared runners. - Red watchtower icon for project avatar. Validation : UI main pipeline #480 green - unit-tests + unit-tests:node20 + lint:circular-deps + build:production ✓ - bundle-size-check + typedoc + docker-build ✓ - trivy + sbom + grype + dockle + cosign:sign ✓ - e2e:kind ✓ (Playwright + Chromium)