Git Commit Message Generator

Generate semantic commit messages following Conventional Commits standard.

**Changes Made:**
[DESCRIBE YOUR CHANGES]

**Generate commits in format:**

```
type(scope): subject

body (optional)

footer (optional)
```

**Types:**
- feat: New feature
- fix: Bug fix
- docs: Documentation
- style: Formatting, missing semi-colons, etc
- refactor: Code refactoring
- perf: Performance improvement
- test: Adding tests
- chore: Maintenance tasks

**Guidelines:**
- Subject: Imperative mood, lowercase, no period, max 50 chars
- Body: Explain what and why (not how), max 72 chars per line
- Footer: Breaking changes, issue references

**Examples:**
```
feat(auth): add OAuth2 Google login

Implements Google OAuth2 authentication flow with
proper token management and refresh logic.

Closes #123
```