Implements optional git-based version control for information spaces:
- HistoryConfig model for configuring history tracking
- Commit, Branch, HistoryEntry, DiffResult models
- IHistoryBackend and IHistoryQuery interfaces
- GitHistoryBackend using git CLI for version control
- GitHistoryEventHandler for event-driven auto-commits
- HistoryEventCoordinator for managing space history
- HistoryQueryService for high-level history queries
- Automatic commits on DOCUMENT_ADDED/REMOVED/CONTENT_CHANGED events
- Support for:
* Commit log with pagination and filtering
* Diff between versions
* File content at specific versions
* Branch creation and switching
* Version restoration
* Uncommitted changes detection
- 43 comprehensive unit tests with git availability checks
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
tegwick
4588cbeee8