fix: use gemma4:latest not gemma4:4b [skip ci]

chore: update gemma3 to gemma4 [skip ci]

Merge remote-tracking branch 'origin/main'

```

Update README.md

Update README.md

chore: Update README.md with configuration details

Revert package name back to git-ai-commit

Change package name to git-ai-commit-cli while keeping binary name as git-ai-commit

Bump version to 0.1.2

Initial commit