- Replace grouped section headers with hover tooltips (title attr) for
a cleaner flat list of descendant options
- After selecting a descendant, stay on the custom step so the user can
write notes before proceeding via a "Continue to" button
- Add pendingContinuationNodeId state to track selected descendant
- "Continue to" and custom branch controls are mutually exclusive
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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