# Proof Spine UI component (segmented visualization with badges)

## Module
Web

## Status
VERIFIED

## Description
Angular proof-spine component suite with segment visualization, badge rows, detail modals, and e2e tests.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/shared/components/proof-spine/`
- **Components**:
  - `chain-integrity-badge` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/chain-integrity-badge.component.ts`)
  - `proof-badges-row` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/proof-badges-row.component.ts`)
  - `proof-segment` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/proof-segment.component.ts`)
  - `proof-spine` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/proof-spine.component.ts`)
  - `segment-detail-modal` (`src/Web/StellaOps.Web/src/app/shared/components/proof-spine/segment-detail-modal.component.ts`)
- **Source**: Feature matrix scan

## E2E Test Plan
- **Setup**:
  - [ ] Log in with a user that has appropriate permissions
  - [ ] Navigate to the relevant page/section where this feature appears
  - [ ] 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-spine-ui-component/run-001/`
- Date (UTC): 2026-02-11