Web Gateway Observability Surfaces (Health, SLO, Traces, Logs, Incident Mode)

Module

Web

Status

IMPLEMENTED

Description

Web gateway observability client providing health aggregation, SLO burn-rate metrics with exemplar links, distributed trace inspection, structured log queries, evidence/attestation pass-through, incident mode toggle, and sealed-mode status APIs.

Implementation Details

Feature directory: src/Web/StellaOps.Web/src/app/core/telemetry/
Services:
- telemetry-sampler (src/Web/StellaOps.Web/src/app/core/telemetry/telemetry-sampler.service.ts)
- ttfs-telemetry (src/Web/StellaOps.Web/src/app/core/telemetry/ttfs-telemetry.service.ts)
Source: SPRINT_0214_0001_0001_web_iii.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 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)

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