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Replaces the single schema fingerprint with an ordered list of named steps, recorded one row per step. An unapplied step is applied; an applied step can never change. Databases stamped by the previous scheme are adopted in place, with their rows. Adds a guard that refuses an unmarked data-destroying statement, and tests covering both directions. Details are tracked internally as T99 / WI-31. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01D5xdKhPXJT4HMWwUyENiu1
Require each migration step to classify its data risk explicitly. Mark post-initial schemas so the previous single-fingerprint build refuses an unsafe rollback.
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T99 exact-head follow-up is in The behavior cases were captured before implementation and pass afterward. Final evidence: 18 focused schema cases, 296 full tests, typecheck, production build, and hosted checks pass. #14 uses this amended head. Detailed findings, trade-offs, and uncertainties are recorded under private T99 / WI-31 in |
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Exact-head validation for
Landing order: merge #15 first, then #14. Merging #14 first would carry these commits transitively, but would make this separate PR redundant; do not deploy or merge the older #15 state after a database has advanced through #14. |
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Tracked as T99 in the private
Morelitea/securityrepository.The finding, reasoning, verification, and review notes live there. This description is deliberately minimal because this repository is public.
Scope: the ordered schema-change contract, compatibility coverage, and documentation. This is the dependency for #14.
Verified: the exact head passes 296 tests, typecheck, production build, and hosted checks. Reviewers should use T99 / WI-31 in
Morelitea/securityfor detail.