Editor Behavior Standards Follow-up

Goal

Align mention/affinity behavior and docs with the strongest external standards instead of vague Plate-only policy.

Phases

• Search existing learnings and current docs/tests for affinity and mention behavior
• Revert mention atomic arrow behavior and align tests/docs/changesets
• Re-audit bold/italic affinity authority and tighten docs to prefer strongest external standards over Plate defaults
• Verify targeted suites and summarize outcome

Follow-on

• Date and local-contract cleanup