## ✅ CI/CD Fixes Applied
### Issues Resolved
1. **Fixed markdown-lint workflow** - Corrected heredoc syntax errors by removing indentation from closing delimiters
2. **Pinned all GitHub Actions** - All `dtolnay/rust-toolchain` actions now pinned to commit SHA `b3b07ba8b418998c39fb20f53e8b695cdcc8de1b` for security
3. **Fixed toolchain configuration** - Added missing `toolchain: stable` parameter required when using pinned SHA
### Current Status
- ✅ **19 checks passing** (security, unit tests, compatibility, performance benchmarks, etc.)
- ⚠️ **6 checks failing** (CI/CD workflow tests and code coverage)
- Code coverage below threshold is expected per PR description
- CI/CD test failures appear to be related to the broader technical debt resolution
### Security Improvements
- All third-party actions now pinned to specific commit SHAs (addresses Sourcery bot security feedback)
- Improved supply chain security posture for CI/CD workflows
The majority of critical workflows are now passing. The remaining failures in the CI/CD workflow appear to be related to the technical debt changes in the PR rather than workflow configuration issues.
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