…opology

- Backend: compute pairwise inter-node link quality (path loss, Fresnel
  clearance, viable/degraded/blocked status) for all selected sites after
  the viewshed scan; add marginal_coverage_km2 + unique_coverage_pct per
  node; propagate RF params (freq, k_factor, clutter) from scan/start
  endpoint to Celery task

- Store: expose interNodeLinks and totalUniqueCoverageKm2 from SSE result

- SiteAnalysisResultsPanel: replace flat card list with three tabs:
    Sites   – elevation, total coverage, unique coverage %, link count
    Links   – sorted link matrix (path loss, Fresnel %, distance, status)
    Topology – mesh connectivity score, direct link counts, multi-hop
               relay detection, all-pairs path table via BFS

- MapContainer: draw colored Polylines between site pairs on the map
  (solid cyan = viable, dashed gold = degraded, dashed red = blocked)

https://claude.ai/code/session_01U92pPU16S4u9RYBdaK1V7t