Introduces automated OS health checks on every push and PR:
Features:
- Runs Cece audit script on push to main and claude/** branches
- Runs on all PRs to main
- Manual trigger support via workflow_dispatch
- Fails build if CRITICAL issues found
- Warns if ERROR issues found (non-blocking)
- Generates GitHub step summary with audit results
- Uploads full audit report as artifact (30-day retention)
Checks:
- Repository structure
- Service registry & DNS consistency
- Kernel integration
- Infrastructure configs
- GitHub workflows
- Backend/frontend structure
- Documentation completeness
- Cross-references
This ensures the OS stays healthy and catches regressions early.
