- Return empty line ranges when git diff fails for non-tracked files
- Prevents hook failures on .claude/settings.local.json and similar files
- Improves robustness when processing files outside git tracking
- Add GitStatus, FileChange, LineRange types for git integration
- Implement DetectRepo() for repository detection
- Add GetStagedChanges() and GetUnstagedChanges() functions
- Create ParseDiffUnified() for git diff parsing
- Add line range utilities for precise change targeting
- Include comprehensive test suite for git operations
carraes