revise

Turn /brain:verify's saved could-not-tell evidence into approved body edits on trusted notes: rewrite drifted file:line references, fix one wrong side claim, re-verify, bump last_verified, one PR. No edit without approval; never touches status, never raises confidence to high. Trigger: /brain:revise [wiki/note.md], or 'fix the line drift' / 'revise the notes verify could not confirm'.