setupEventHandlers returned immediately when documentControls was absent (it
is never created now), so changes-accepted was never wired and accepted edits
updated the model but not the page. Verified end to end with a headless
Chromium edit through markitect md-render.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Assistant: claude-code
Assistant-Model: sonnet
Assistant-Process: 299063@bnt-lap001
Assistant-Session: 53eb1e1c-c13a-4277-9ce2-3702960d93f7