# Proof-linked VEX UI (Evidence drawer, Proof Spine component)

## Module
Web

## Status
VERIFIED

## Description
Angular UI components for proof spine visualization (segments, badges, detail modal) and evidence drawer are implemented with e2e test coverage.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/shared/components/`
- **Components**:
  - `proof-spine` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/proof-spine.component.ts`)
  - `proof-segment` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/proof-segment.component.ts`)
  - `proof-badges-row` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/proof-badges-row.component.ts`)
  - `evidence-drawer` (`src/Web/StellaOps.Web/src/app/shared/components/evidence-drawer/evidence-drawer.component.ts`)
- **Services**:
  - `n/a (presentation components consume typed inputs from parent feature surfaces)`
- **Models**:
  - `src/Web/StellaOps.Web/src/app/core/models/proof-spine.model.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)

## Verification
- Run: `docs/qa/feature-checks/runs/web/proof-linked-vex-ui/run-001/`
- Date (UTC): 2026-02-11