Plan a zero-downtime data migration end to end: inventory, expand-and-contract phasing, backfill, cutover, rollback rehearsal, and the sign-off that makes it real.
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npx promptdock@latest install admin1/migration-plannerA phased plan for changing a schema that is serving live traffic. Built on expand-and-contract: every step is independently deployable and independently reversible, so no release is a point of no return.
Any schema change where the old and new code must run at
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Turn a staged diff into a conventional-commit message: a scoped subject line under 72 characters plus a body that explains why, not what.
A multi-lens review workflow: correctness, security, and simplification passes, each producing findings the next pass must verify or refute before they ship.