Replace every remaining reference to the old Gitea infrastructure with the
new GitHub-hosted equivalents across all documentation, wiki pages, test
files, and historical ticket summaries.
- README.md: CI badge, clone URL, releases link, CI/CD section, project structure
- docs/wiki/CICD-Pipeline.md: full rewrite for GitHub Actions + ghcr.io
- docs/wiki/Home.md: CI badge, releases link, phase status, tech stack
- docs/wiki/Troubleshooting.md: rewrite CI troubleshooting for GitHub Actions
- docs/architecture/README.md: update CI/CD pipeline diagram
- AGENTS.md: CI/CD section, environment references
- PLAN.md: directory structure, pipeline table
- SECURITY_AUDIT.md: mark C3 and L4 findings as resolved
- ticket-git-cliff-changelog.md: workflow path updated
- tickets/ci-runner-speed-optimization.md: image registry updated
- 2026-hackathon_AgenticFeature.md: workflow path updated
- tests: workflow path assertions updated in all three test files
- Add --test-threads=1 flag to all Rust test commands
- Update .gitea/workflows/test.yml to use serial test execution
- Update AGENTS.md to reflect the serial test requirement
Environment variable modifications in Rust tests cause race conditions
when tests run in parallel because std::env is shared global state.
