# Evidence Thread Browser (Artifact Evidence Lineage)

## Module
Web

## Status
VERIFIED

## Description
Browse and inspect evidence threads per artifact digest. List view shows all evidence threads; detail view shows the full thread of evidence for a specific artifact including all linked attestations, proofs, and verification results.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/evidence-thread/`
- **Routes**: `evidence-thread.routes.ts`
- **Components**:
  - `evidence-export-dialog` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/components/evidence-export-dialog/evidence-export-dialog.component.ts`)
  - `evidence-graph-panel` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/components/evidence-graph-panel/evidence-graph-panel.component.ts`)
  - `evidence-node-card` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/components/evidence-node-card/evidence-node-card.component.ts`)
  - `evidence-thread-list` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/components/evidence-thread-list/evidence-thread-list.component.ts`)
  - `evidence-thread-view` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/components/evidence-thread-view/evidence-thread-view.component.ts`)
  - `evidence-timeline-panel` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/components/evidence-timeline-panel/evidence-timeline-panel.component.ts`)
  - `evidence-transcript-panel` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/components/evidence-transcript-panel/evidence-transcript-panel.component.ts`)
- **Services**:
  - `evidence-thread` (`src/Web/StellaOps.Web/src/app/features/evidence-thread/services/evidence-thread.service.ts`)
- **Source**: Feature matrix scan

## E2E Test Plan
- **Setup**:
  - [ ] Log in with a user that has appropriate permissions
  - [ ] Navigate to `/evidence`
  - [ ] 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/evidence-thread-browser/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): 2026-02-11T06:16:10Z
- Status: VERIFIED (strict Tier 2 UI replay)
- Tier 2 evidence: docs/qa/feature-checks/runs/web/evidence-thread-browser/run-003/tier2-ui-check.json.