# Visual Workflow Editor (DAG-Based)

## Module
Web

## Status
IMPLEMENTED

## Description
Visual DAG-based workflow editor with drag-and-drop step palette, step configuration panel, connection validation, and YAML view with syntax highlighting.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/workflow-visualization/`
- **Routes**: `workflow-visualization.routes.ts`
- **Components**:
  - `step-detail-panel` (`src/Web/StellaOps.Web/src/app/features/workflow-visualization/components/step-detail-panel/step-detail-panel.component.ts`)
  - `time-travel-controls` (`src/Web/StellaOps.Web/src/app/features/workflow-visualization/components/time-travel-controls/time-travel-controls.component.ts`)
  - `workflow-visualizer` (`src/Web/StellaOps.Web/src/app/features/workflow-visualization/components/workflow-visualizer/workflow-visualizer.component.ts`)
- **Services**:
  - `time-travel` (`src/Web/StellaOps.Web/src/app/features/workflow-visualization/services/time-travel.service.ts`)
  - `workflow-visualization` (`src/Web/StellaOps.Web/src/app/features/workflow-visualization/services/workflow-visualization.service.ts`)
- **Source**: SPRINT_20260110_111_004_FE_workflow_editor.md

## E2E Test Plan
- **Setup**:
  - [ ] Log in with a user that has appropriate permissions
  - [ ] Navigate to `/release-orchestrator`
  - [ ] Ensure test data exists (scanned artifacts, SBOM data, or seed data as needed)
- **Core verification**:
  - [ ] Verify the editor/studio loads with editable content or empty template
  - [ ] Verify changes can be saved and persisted
  - [ ] Verify validation errors are displayed for invalid input
- **Edge cases**:
  - [ ] Verify graceful handling when backend API is unavailable (error state)
  - [ ] Verify responsive layout at different viewport sizes
  - [ ] Verify accessibility (keyboard navigation, screen reader labels, ARIA attributes)