🔧 Add Pre-commit Integration to /git Command (#46)

feat: add pre-commit integration to /git command

- Add --pre-commit flag with setup and management capabilities
- Create pre-commit-patterns.yml with Python (uv) and Node (npm) support
- Include hooks for linting, formatting, and security scanning
- Add usage examples to command documentation

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

Co-authored-by: Claude <noreply@anthropic.com>

.claude/commands/shared/execution-patterns.yml

@@ -293,6 +293,7 @@ Git_Workflows:
     Before_Commit:
       - "git status → Verify intended files"
       - "git diff --staged → Review changes"
+      - "Run pre-commit hooks if configured"
       - "Run tests if available"
       - "Check for secrets/credentials"
     Before_Push: