68e2708ff6
Codex R15: duplicate Ring rows from the pre-index race can own different entities (one got battery, another motion); deleting the extras cascaded away already-ingested state. The migration now MERGES — reparents each duplicate's entities and their state onto the earliest row, keeping the survivor's copy on a (device_id,key) collision — then removes the emptied duplicates. Verified on Postgres: survivor keeps battery=90 and gains the reparented motion entity (disjoint data preserved); suite 43 green on SQLite. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> |
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