[QA] PASSED ✅ Comprehensive QA verification completed. All acceptance criteria met: - All 12 workflow steps rendered as React Flow nodes - Three distinct custom node types (Check, Agent, Decision) - Correct edge connections including conditional paths - Status visualization (pending/current/completed) - Responsive layout, view-only mode - 23/23 frontend tests passing - Full integration with dashboard See /tmp/qa-PLOW-54.md for detailed report. Implementation is production-ready.

## Implementation Complete **Changes Made:** ### New Files Created: - src/components/WorkflowDiagram.tsx - Main React Flow visualization component - src/components/nodes/CheckNode.tsx - Custom node for status checks (steps 1, 3, 6, 12) - src/components/nodes/AgentNode.tsx - Custom node for agent steps (steps 2, 5, 7, 8, 10, 11) - src/components/nodes/DecisionNode.tsx - Custom node for decisions (steps 4, 9) - src/__tests__/WorkflowDiagram.test.tsx - 12 tests covering rendering, states, and edge cases ### Modified Files: - package.json - Added @xyflow/react dependency - App.tsx - Full dashboard layout with sidebar panels and diagram - App.css - Dark theme dashboard styles - index.css - Global styles for React Flow ### Features Implemented: - All 12 workflow steps rendered as positioned nodes - Custom node types with distinct visual styles - Dynamic node status visualization (pending/current/completed) - Decision values display (classification type, QA type) - Edge connections with color-coded progress - Responsive dark theme layout ### Verification: - All 23 frontend tests passing - Build succeeds without TypeScript errors - Web E2E test passes

## Feature Triage Complete **Status:** NOT IMPLEMENTED **Summary:** The React Flow workflow diagram component does not exist yet. The frontend is currently boilerplate Vite+React code. All required infrastructure (WebSocket, Zustand store, TypeScript types) is already in place. **Implementation Location:** - New: `src/components/WorkflowDiagram.tsx` and node components - Modified: `App.tsx`, `package.json` **Dependency Required:** `@xyflow/react` (v12.10.0) **Complexity:** Medium (1-2 days implementation) **Reference:** TUI workflow graph at `src/trckr_plow/tui/workflow_graph.py` provides step definitions. See attached triage report at `/tmp/triage-PLOW-54.md` for full details.