- crash-before-rename test: a COMPLETE valid migrated temp beside the
untouched original is discarded and the boot re-migrates — the
sharpest point on the crash timeline, deterministic, no fault
injection needed
- story: all six tasks done with commit hashes, all eight criteria met
with the test that proves each, plus the three deviations from the
plan and why (transcode over replay, lazy head, poison forces
transcode)
- CODE-LOGIC: migration section; also corrected limitation 3, which
still claimed unbounded hot-row chains — iteration 11 closed that
- status board row 12; deploy guide's rollback section gets its real
answer (rolling back across a migration is a migration backwards:
expect the refusal, restore the .bak)
- test_wal 5966 pass, 0 fail
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 4bb6ece2531e2123eb958c91d9bef4a6528eab3b)
- brainstorm settled: declarative and automatic at boot; v1 verbs are
add and delete only; data/seed migrations deferred to v2
- added fields zero-fill by kind: the grammar has no field-default
syntax and v1 refuses to grow compiler surface for it
- same-kind delete+add refuses as a disguised rename; retype and
vanished classes refuse by name
- schema lives in the log itself: WO_WAL_SCHEMA head record, written by
fresh-log open and compaction; name-keyed diff also closes the
silent cid-renumbering hole
- story is iteration 12, board row added, db2-migrate prefix claimed
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
(cherry picked from commit 072e007b144ff6689b6ff920ea10665900c1a2ef)
