- Replace timestamp-based collision scoring with deterministic content hashing
- Add hashIssueContent() using SHA-256 of all substantive fields
- Modify ScoreCollisions to compare hashes and set RemapIncoming flag
- Update RemapCollisions to handle both directions (remap incoming OR existing)
- Add CollisionDetail.RemapIncoming field to control which version gets remapped
- Add unit tests for hash function and deterministic collision resolution
Status: Hash-based resolution works correctly, but TestTwoCloneCollision still
fails due to missing rename detection. After Clone B resolves collision,
Clone A needs to recognize its issue was remapped to a different ID.
Next: Add content-based rename detection during import to prevent
re-resolving already-resolved collisions.
Progress on bd-86.
Amp-Thread-ID: https://ampcode.com/threads/T-b19b49e8-b52a-463d-b052-8a526a500260
Co-authored-by: Amp <amp@ampcode.com>
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