paqad-ai
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Spec-driven development framework — AI agents that think before they type
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add-column-nullable safe; backfill in a follow-up
add-column-not-null unsafe; require explicit DEFAULT or 2-step backfill story
drop-column unsafe; require deprecation window first
rename-column-or-table unsafe; require shim/dual-write window
add-unique-index unsafe without prior dedup verification
type-change unsafe; route via column-add + dual-write + drop
truncate / delete-from unsafe; require Decision Packet
explicit-table-lock unsafe in hot tables; verify maintenance window