- Add RenameDetail type to track content matches with different IDs
- Remove deletion logic from DetectCollisions (now read-only)
- Create ApplyCollisionResolution to handle all modifications
- Update importer.go to use two-phase approach (detect then apply)
- Fix dependency preservation in RemapCollisions
- Collect all dependencies before CASCADE DELETE
- Recreate with updated IDs after remapping
- Add tests: TestDetectCollisionsReadOnly, TestApplyCollisionResolution
- Update collision tests for content-hash scoring behavior
- Create bd-100 to track fixing autoimport tests
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