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Snapshot Merge Preview with K4 Lattice Visualization and Determinism Verification

Module

Web

Status

VERIFIED

Description

Snapshot management UI with merge preview showing per-CVE source contributions with trust scores, K4 lattice visualization, merge traces, missing evidence indicators, REPLAY.yaml format for deterministic replay, and verify-determinism component. (Merged with Snapshot Merge Preview from Phase 2 AirGap section.)

Implementation Details

  • Feature directories:
    • src/Web/StellaOps.Web/src/app/shared/components/lattice-diagram/
    • src/Web/StellaOps.Web/src/app/features/snapshot/components/merge-preview/
    • src/Web/StellaOps.Web/src/app/features/snapshot/components/verify-determinism/
    • src/Web/StellaOps.Web/src/app/features/snapshot/components/snapshot-panel/
  • Components:
    • lattice-diagram (src/Web/StellaOps.Web/src/app/shared/components/lattice-diagram/lattice-diagram.component.ts)
    • merge-preview (src/Web/StellaOps.Web/src/app/features/snapshot/components/merge-preview/merge-preview.component.ts)
    • verify-determinism (src/Web/StellaOps.Web/src/app/features/snapshot/components/verify-determinism/verify-determinism.component.ts)
    • snapshot-panel (src/Web/StellaOps.Web/src/app/features/snapshot/components/snapshot-panel/snapshot-panel.component.ts)
  • Source: Feature matrix scan

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 ID: docs/qa/feature-checks/runs/web/snapshot-merge-preview-with-k4-lattice-visualization-and-determinism-verificatio/run-001/
  • Date (UTC): 2026-02-11
  • Tier 0: PASS (source/symbol verification for lattice, merge-preview, verify-determinism, snapshot-panel, and supported behavior spec).
  • Tier 1: PASS (npm run test focused suite: 16 files / 78 tests; npm run build passed with known baseline warnings).
  • Tier 2: PASS (behavioral verification of K4 lattice semantics, merge preview interactions, determinism API success/error paths, and REPLAY manifest/export actions).