feat: offline GeoIP, advanced filter, performance tuning, enriched viz

Major v2 improvements to simple analysis module:

Backend:
- Column name normalization with 50+ column alias mapping
- Offline GeoIP integration (reuses analysis.geoip module,
  no dependency on CSV lat/lon columns)
- Advanced filter builder with AND/OR/NOT conditions
- Edge relationship computation (IP pair frequency)
- HDBSCAN with GeoIP-derived coordinates + float32 memory opt
- DBSCAN fallback when HDBSCAN produces all-noise
- Jitter for duplicate GeoIP coordinates (city-level overlap)
- All-noise graceful handling (visualize all points as noise)
- Cluster detail with GeoIP city/ISP/org attributes

Deps: geoip2==5.3.0, maxminddb==3.1.1 added to requirements.txt

Co-Authored-By: Claude <noreply@anthropic.com>

simple_analysis/urls.py

@@ -6,6 +6,8 @@ urlpatterns = [
     path('', views.index, name='index'),
     path('upload/', views.upload_csv, name='upload'),
     path('filter/', views.filter_data, name='filter'),
+    path('filter/advanced/', views.advanced_filter, name='advanced_filter'),
     path('cluster/', views.run_clustering, name='cluster'),
     path('cluster/<int:label>/', views.cluster_detail, name='cluster_detail'),
+    path('edges/', views.edge_relationships, name='edges'),
 ]