Quick task 260811-f9i: plan and summary of the fix, STATE.md row, and the UAT
test 2 result. Test 2 was the read-only A2 check against the real directory --
it turned assumption A2 from "unverified" into "false as implemented" and
surfaced a defect that would have deleted every AD-bound group on the first
real sync.
Also records why the defect survived review: the spec mocks built their
expected filter with the same escape helper the production code used, so the
test asserted self-consistency rather than directory behaviour.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
