# Evidence Provenance Visualization Component

## Module
Web

## Status
VERIFIED

## Description
Interactive evidence provenance chain visualization showing the path: finding -> advisory -> VEX -> policy -> attestation. Part of the evidence-export feature module with routing integration.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/shared/components/evidence-checklist/`
- **Components**:
  - `evidence-checklist` (`src/Web/StellaOps.Web/src/app/shared/components/evidence-checklist/evidence-checklist.component.ts`)
- **Source**: SPRINT_20251229_016_FE_evidence_export_replay_ui.md

## 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 visualization renders correctly with sample data
  - [ ] Verify interactive elements (hover tooltips, click-to-drill-down) work
  - [ ] Verify the visualization handles empty/minimal data gracefully
- **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/evidence-provenance-visualization-component/run-001/
- Tier 0 (source): pass (	ier0-source-check.json)
- Tier 1 (build/tests): pass (	ier1-build-check.json)
- Tier 2 (behavior): pass (	ier2-e2e-check.json)
- Verified on (UTC): 2026-02-10

## Recheck (run-003)
- Date (UTC): 2026-02-11T06:50:05Z
- Status: FAILED (strict Tier 2 UI replay)
- Tier 2 evidence: `docs/qa/feature-checks/runs/web/evidence-provenance-visualization-component/run-003/tier2-ui-check.json`
- Notes: `/evidence/provenance` rendered the page header, but selecting artifact `art-001` did not render any `.chain-node` entries in the strict end-user transaction.

## Recheck (run-004)
- Date (UTC): 2026-02-11T10:08:09Z
- Status: PASSED (strict Tier 2 UI replay)
- Tier 2 evidence: docs/qa/feature-checks/runs/web/evidence-provenance-visualization-component/run-004/tier2-ui-check.json
- Notes: Verified on /evidence/provenance after artifact selection with chain-node and detail modal assertions.