Add bodyId derived from entry.key, attach aria-controls={bodyId} to the
toggle button, and add id={bodyId} role="region" aria-label to the
collapsible body div. Screen readers can now announce the expand/collapse
relationship between the button and the region it controls (WCAG 4.1.2).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>