docs(qa): refresh cli.doctor-deprecation-scan against head (#11420) (#11638)

#10680 removed the dead `objectstack codemod v2-to-v3` prescription this
item's expected-fail described, and #10679 moved every doctor.ts anchor it
quoted. The clause inverts — but not into "the hint now names a registered
command": the route taken was prescribe-nothing, so revision 2's assertion
was the wrong SHAPE for head, where the hint deliberately names none.

Six texts changed beyond the named clause, all re-derived at this base: the
title, fixtures.knownGaps (revision 2's "no test anywhere references
--scan-deprecations" is false — #10680 added a pin), steps 3 and 6, three
new negatives, and every line anchor. Of the eleven numbers revision 2
quoted, only walkDir's node_modules prune at :1130 still held.

Verified accurate at head and left alone: backward-compatibility.mdx:126-134,
packages/cli/README.md §os doctor, the blank template, #9591, sibling
cli.migrate-meta-codemod, the DEPRECATED_PATTERNS count of 8, both personas,
both traps, and the four original negatives.


Claude-Session: https://claude.ai/code/session_015ahemw8RcTgqtxrj15PEZx

Co-authored-by: Claude <noreply@anthropic.com>

Author: claude[bot]