chore: Add organization ruleset configurations and test results

Added organization-level GitHub ruleset configurations:
- org-ruleset-main-branch.json: Main branch protection rules
  - Requires pull requests with review thread resolution
  - Requires status checks: Tests, Pre-commit Checks, Security Scan
  - Prevents force pushes
  - Bypass for RepositoryRole (actor_id: 5)

- org-ruleset-tags.json: Release tag protection rules
  - Protects all v* tags from creation, deletion, updates
  - Requires signatures
  - Bypass for RepositoryRole (actor_id: 5)
  - **NOTE**: This ruleset is blocking automated tag creation

Test Results:
- Updated coverage.xml and security_scan_results.json
- Achieved 83.09% test coverage (exceeding 80% target!)
- 1245 tests passed, 2 failed (LLM integration tests)

Next Steps:
- Update org-ruleset-tags.json to add user bypass for automation
- Fix 2 failing LLM integration tests

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: GeneAI