Decision nodes with fewer than 2 buildable child targets now get
demoted to action nodes instead of creating invalid tree structures.
Also adds id fields to option objects (required by tree editor).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Fix _build_troubleshooting_tree() to handle deep nesting, warning nodes,
and DAG deduplication (placed set prevents duplicate IDs)
- Fix step_sync VARCHAR(255) overflow on publish by truncating title
- Add "Approve All" button to KB review screen
- Add delete button (hover-reveal) to flow canvas nodes
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>