# Reachability Center UI View

## Module
Web

## Status
VERIFIED

## Description
Reachability Center view showing asset coverage, missing sensors, and stale reachability facts. Implemented with deterministic fixture data; pending official fixture bundle swap from Signals guild.

## Implementation Details
- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/reachability/`
- **Route**: `/reachability`
- **Components**:
  - `path-viewer` (`src/Web/StellaOps.Web/src/app/features/reachability/components/path-viewer/path-viewer.component.ts`)
  - `risk-drift-card` (`src/Web/StellaOps.Web/src/app/features/reachability/components/risk-drift-card/risk-drift-card.component.ts`)
  - `poe-drawer` (`src/Web/StellaOps.Web/src/app/features/reachability/poe-drawer.component.ts`)
  - `reachability-center` (`src/Web/StellaOps.Web/src/app/features/reachability/reachability-center.component.ts`)
  - `reachability-explain-widget` (`src/Web/StellaOps.Web/src/app/features/reachability/reachability-explain-widget.component.ts`)
  - `reachability-explain` (`src/Web/StellaOps.Web/src/app/features/reachability/reachability-explain.component.ts`)
  - `reachability-why-drawer` (`src/Web/StellaOps.Web/src/app/features/reachability/reachability-why-drawer.component.ts`)
  - `witness-page` (`src/Web/StellaOps.Web/src/app/features/reachability/witness-page.component.ts`)
- **Service**:
  - `drift-api` (`src/Web/StellaOps.Web/src/app/features/reachability/services/drift-api.service.ts`)
- **Focused tests**:
  - `src/Web/StellaOps.Web/src/tests/reachability_center/reachability-center.component.spec.ts`

## Follow-up Notes
- Fixture-source rendering remains intentional for deterministic offline verification.
- Official Signals fixture bundle swap is still a separate enhancement track.

## Verification
- Date: 2026-02-10
- Run artifacts: `docs/qa/feature-checks/runs/web/reachability-center-ui-view/run-001/`
- Tier results:
  - `tier0-source-check.json`: pass
  - `tier1-build-check.json`: pass
  - `tier2-e2e-check.json`: pass


## Recheck (run-002)
- Date (UTC): 2026-02-10
- Status: VERIFIED (replayed)
- Tier 1 evidence: Angular build passed and checked-web suite passed 145/145.
- Tier 2 evidence: docs/qa/feature-checks/runs/web/reachability-center-ui-view/run-002/tier2-e2e-check.json.