🤖 feat: implement trunk-based CI/CD with local testing

- Designed trunk-based development workflow with branch protection
- Added workflow validation job to prevent main branch breaks
- Integrated act (GitHub Actions runner) for local Gitea workflow testing
- Created unified CI/CD script interface (scripts/cicd.sh)
- Added YAML lint configuration with practical limits (400 chars)
- Organized all CI/CD scripts under scripts/cicd/ directory
- Confirmed Gitea/GitHub Actions compatibility via local testing
- Updated ADR 0017 with implementation details and test results
- Enhanced documentation with local development workflow

See ADR-0017 for complete trunk-based development workflow documentation.
See ADR-0016 for CI/CD pipeline design.

adr/0014-version-management-lifecycle.md

@@ -2,7 +2,7 @@
 
 **Date:** 2026-04-05
 **Status:** ✅ Proposed
-**Authors:** DanceLessonsCoach Team
+**Authors:** Arcodange Team
 **Decision Date:** 2026-04-05
 **Implementation Status:** Partial (version package created, need to implement full lifecycle)
 
@@ -398,5 +398,5 @@ git push origin main --tags
 
 **Status:** Proposed  
 **Next Review:** 2026-04-12  
-**Implementation Owner:** DanceLessonsCoach Team  
+**Implementation Owner:** Arcodange Team  
 **Approvers Needed:** @gabrielradureau