- Show previously-created custom steps as clickable options on decision
nodes so they remain accessible after going back
- Fix breadcrumb to show custom step titles instead of raw UUIDs
- Fix ContinuationModal to show grandchildren (two levels deep) instead
of immediate children that duplicate option labels
- Remove redundant "Save to Library" checkbox from StepForm since
PostStepActionModal now handles that decision
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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