refactor(workflow-dashboard): reduce cyclomatic complexity in editor (#449)
- Extract helpers in assignLayers (bfsLayers, processTarget, placeIsolatedNodes, maxLayerExcludingEnd) to reduce complexity from 26 → ≤15
- Extract isProtectedNode and isFirstConditionalSibling helpers in onBeforeDelete (20 → ≤15)
- Extract handleEscape and handleUndoRedo in handleKeyDown (23 → ≤15)
- Extract buildNodeMap, sortTransitions, buildStepEdges, pushStepEdges, assignTargetHandles in transIn (33 → ≤15)
- Extract validateRoleNodeEdges and hasEmptyConditionOnIfEdge in validateRoleNodes (22 → ≤15)
- Remove unused state parameter from Form component in add-node.tsx
- Add vitest + 19 tests covering all refactored functions
Co-Authored-By: Claude Sonnet 4 <noreply@anthropic.com>
xingyue
39e2ab7f0d