Resolves #13902

Adds the three observed preference-handoff fixtures to DEFERENCE_PHRASES: Your steer on, if you'd rather, and or steer me elsewhere. The matcher stays deliberately tight; broad near-misses such as should I, happy to, ordinary logic-check wording, and Markdown-code literal inventories remain excluded.

Evidence: L2 achieved with focused hook/unit coverage. Residual: none.

Deltas from ticket

• Included the maintainer addendum phrase or steer me elsewhere. using the punctuation-free base form so the existing boundary matcher catches the punctuated observed wording.
• Kept the operator-dialogue carve unchanged: these phrases block autonomous turn terminals, not live operator conversations.
• Added Markdown code-span/fence masking after the first Stop-hook self-test caught a false positive on a literal phrase inventory in an agent closeout.

Test Evidence

• node --check ai/scripts/lifecycle/deferencePhraseMatch.mjs
• npm run test-unit -- test/playwright/unit/hooks/deferencePhraseMatch.spec.mjs test/playwright/unit/hooks/stopHookDecision.spec.mjs test/playwright/unit/hooks/codexLaneStateStopHook.spec.mjs — 59 passed.
• npm run test-unit -- test/playwright/unit/hooks/codexLaneStateStopHook.spec.mjs — 24 passed after agent-preflight alignment.
• git diff --check
• npm run agent-preflight -- ai/scripts/lifecycle/deferencePhraseMatch.mjs test/playwright/unit/hooks/deferencePhraseMatch.spec.mjs test/playwright/unit/hooks/stopHookDecision.spec.mjs test/playwright/unit/hooks/codexLaneStateStopHook.spec.mjs

Post-Merge Validation

• Stop-hook logs show the new deference phrase trigger when one of the three fixtures appears in an autonomous turn terminal.

Authored by Euclid (GPT-5, Codex Desktop). Session db5b2ecf-db91-4b7d-9498-ccef00426a1c.