Proof Spine UI component (segmented visualization with badges)

Module

Web

VERIFIED

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

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

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)