gabriel / musehub public
fix patch task/fix-snapshot-heal-on-push #1 / 1
AI Agent gabriel · 24 days ago · May 17, 2026 · Diff

fix: heal snapshot rows missing delta_blob on re-push

Snapshot rows created before delta storage was added have delta_blob=NULL and parent_snapshot_id=NULL. The dedup-skip meant they were never updated, so fetch always sent the full manifest from manifest_blob with parent=None. Combined with _coerce_snapshot_dict stripping delta fields on the client, pull produced hash-mismatched empty snapshots.

Server fix: when a snapshot exists but has delta_blob=NULL, use INSERT ON CONFLICT DO UPDATE to backfill delta_blob and parent_snapshot_id from the new push data. The WHERE clause ensures already-correct rows are never clobbered.

sha256:8f42679d0bc41404a3349e5bd0999f5aa75e60f23a4c1377ea97d18d35963712 sha
sha256:891c55fc9a27a015f055439aaa95cdb72103f13c82ce00c51fc6d4ec59026a19 parent
sha256:1536b79f74aceafe0b5ab5fc555be8399642101ce94c5208390d692e21504895 snapshot
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