The commit endpoint returns {message, validation_errors} when
validation fails, but the error handler was passing the whole object
to toast.error(), crashing React with "Objects are not valid as a
React child".
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The uploader should know their content type — auto-detection adds
complexity and currently just defaults to troubleshooting anyway.
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>