Three Tier-3 flows through the real worker:
- undo/redo steps back across interleaved DSL insert, SQL insert,
and SQL delete — proving SQL DML snapshots like DSL (R22)
- undo restores the database read model AND the on-disk CSV
together (consistent (db, csv) pair)
- the snapshot ring persists across a close + reopen of the project
(undo works in a later session)
1696 passed / 0 failed / 1 ignored; clippy clean.
claude@clouddev1
cf53023a71