# Evidence Ribbon UI Component

## Module
Web

## Status
IMPLEMENTED

## Description
Horizontal evidence ribbon component that displays a compact summary strip of evidence types (SBOM, VEX, attestation, provenance) with color-coded badges and drill-down capability. Integrated into developer and auditor workspace views.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/evidence-ribbon/`
- **Components**:
  - `evidence-ribbon` (`src/Web/StellaOps.Web/src/app/features/evidence-ribbon/components/evidence-ribbon/evidence-ribbon.component.ts`)
- **Services**:
  - `evidence-ribbon` (`src/Web/StellaOps.Web/src/app/features/evidence-ribbon/services/evidence-ribbon.service.ts`)
- **Models**:
  - `src/Web/StellaOps.Web/src/app/features/evidence-ribbon/models/evidence-ribbon.models.ts`
- **Source**: batch_38/file_11.md

## E2E Test Plan
- **Setup**:
  - [ ] Log in with a user that has appropriate permissions
  - [ ] Navigate to `/triage/artifacts/:artifactId`
  - [ ] Ensure test data exists (scanned artifacts, SBOM data, or seed data as needed)
- **Core verification**:
  - [ ] Verify the component renders correctly with sample data
  - [ ] Verify interactive elements respond to user input
  - [ ] Verify data is fetched and displayed from the correct API endpoints
- **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)