# Proof chain verification UI

## Module
Web

## Status
IMPLEMENTED

## Description
13 Angular standalone components implement proof-driven UX with evidence chains, including tabbed panels, static evidence cards, and E2E tests.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/proof-chain/`
- **Components**:
  - `proof-detail-panel` (`src/Web/StellaOps.Web/src/app/features/proof-chain/components/proof-detail-panel.component.ts`)
  - `verification-badge` (`src/Web/StellaOps.Web/src/app/features/proof-chain/components/verification-badge.component.ts`)
  - `proof-chain` (`src/Web/StellaOps.Web/src/app/features/proof-chain/proof-chain.component.ts`)
- **Services**:
  - `proof-chain` (`src/Web/StellaOps.Web/src/app/features/proof-chain/proof-chain.service.ts`)
- **Models**:
  - `src/Web/StellaOps.Web/src/app/features/proof-chain/proof-chain.models.ts`
- **Source**: Feature matrix scan

## E2E Test Plan
- **Setup**:
  - [ ] Log in with a user that has appropriate permissions
  - [ ] Navigate to `/proofs/:subjectDigest`
  - [ ] 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)