radial sugiyama positioning integration

.env.example

@@ -39,6 +39,20 @@ SPARQL_READY_TIMEOUT_S=10
 CORS_ORIGINS=http://localhost:5173
 VITE_BACKEND_URL=http://backend:8000
 
+# Frontend right-pane cosmos.gl layout
+VITE_COSMOS_ENABLE_SIMULATION=true
+VITE_COSMOS_DEBUG_LAYOUT=false
+VITE_COSMOS_SPACE_SIZE=4096
+VITE_COSMOS_CURVED_LINKS=true
+VITE_COSMOS_FIT_VIEW_PADDING=0.12
+VITE_COSMOS_SIMULATION_DECAY=5000
+VITE_COSMOS_SIMULATION_GRAVITY=0
+VITE_COSMOS_SIMULATION_CENTER=0.05
+VITE_COSMOS_SIMULATION_REPULSION=0.5
+VITE_COSMOS_SIMULATION_LINK_SPRING=1
+VITE_COSMOS_SIMULATION_LINK_DISTANCE=10
+VITE_COSMOS_SIMULATION_FRICTION=0.1
+
 # Debugging
 LOG_SNAPSHOT_TIMINGS=false
 FREE_OS_MEMORY_AFTER_SNAPSHOT=false