# Platform Health Dashboard

## Module
Web

## Status
VERIFIED

## Description
Platform health dashboard showing service health grid for 13 services, dependency graph visualization, incident timeline with auto-root-cause suggestions, and aggregate metrics.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/platform-health/`
- **Routes**: `platform-health.routes.ts`
- **Components**:
  - `incident-timeline` (`src/Web/StellaOps.Web/src/app/features/platform-health/incident-timeline.component.ts`)
  - `platform-health-dashboard` (`src/Web/StellaOps.Web/src/app/features/platform-health/platform-health-dashboard.component.ts`)
  - `service-detail` (`src/Web/StellaOps.Web/src/app/features/platform-health/service-detail.component.ts`)
- **Source**: SPRINT_20251229_032_FE_platform_health_dashboard

## E2E Test Plan
- **Setup**:
  - [ ] Log in with a user that has appropriate permissions
  - [ ] Navigate to `/ops/health`
  - [ ] Ensure test data exists (scanned artifacts, SBOM data, or seed data as needed)
- **Core verification**:
  - [ ] Verify the dashboard loads without errors and displays summary cards/metrics
  - [ ] Verify data refreshes correctly and loading states are shown
  - [ ] Verify empty state is displayed when no data is available
- **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)