Updates ExportState to track Dolt commits (not git commits) for accurate
change detection. This prevents polecats sharing a Dolt DB from exporting
each others uncommitted work.
Changes:
- ExportState now tracks Dolt commit hash via VersionedStorage.GetCurrentCommit()
- Added WorktreeHash and Actor fields for debugging and future filtering
- hookPreCommitDolt uses Diff() to detect changes since last export
- Added hookPreCommitDoltFallback for graceful degradation
- Added exportIncrementalDolt and exportFullDolt helper functions
- Removed unused exportToJSONLFromStore function
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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