v0.3.0

Added

• --version flag to display build version
• Scope whitelist validation to enforce allowed scopes in commits
• Pre-flight co-author validation to enforce model-specific attribution
• Model-specific co-author trailer enforcement (Anthropic, OpenAI, Google)
• Support for zero-commit repositories via filesystem walk
• AllChangedFiles function to list staged, unstaged, and untracked files
• CHANGELOG.md with Keep a Changelog format for version documentation

Changed

• Replaced AddAll with AllChangedFiles to preserve staging intent
• Scope generation instructions updated to prioritize description-based matching
• Hook executor integrates co-author validation for all hooks

Fixed

• Empty diff edge cases handled correctly in commit service
• Verbose test output properly reflects unstaged files sequence

Docs

• Model co-author requirements documented with examples and exit codes
• User-level hook configuration (--user flag) documented
• Code graph design expanded with action capture and session tracking
• Design documentation restructured with standard headings
• Graph feature design docs reorganized under code-graph-design folder
• README updated with user, project, and local config scope flags