Why the Migration Got a Manual Look in Accept-Edits Mode
The session in the case study was running in accept-edits mode, which normally waves through routine file edits without asking. The engineer still reviewed the migration file by hand before approving it.
Why, given that accept-edits was already active?
The correct answer is "A schema-affecting change is worth a deliberate look even mid-session."
A migration is exactly the category of change — schema-affecting,
harder to casually revert once applied — that's worth a
deliberately higher bar than the routine file edits accept-edits mode
otherwise waves through. Nothing in the tooling forced this review:
the PreToolUse hook in this repo only blocks writes under the
generated Prisma directory, not migrations, so the extra scrutiny
came from the engineer's own judgment about what's risky, not from a
technical gate.
The distractors invent a mechanism that isn't there: accept-edits
mode doesn't carve out .sql files as a special case by default; the
PreToolUse hook doesn't block migrations, only the generated-schema
directory; and nothing in the case study's CLAUDE.md requires a
second engineer's sign-off.
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