merge parallel edges in graph visualization; update link representation to include combined types and max count

admin.html

@@ -1346,10 +1346,24 @@ function renderIntelGraph() {
 
   // deep-copy so d3 doesnt mutate our stored arrays on re-render
   const nodesCopy = nodes.map(n => ({ ...n }));
-  const linksCopy = links.map(l => ({
+
+  // merge parallel edges (same src+tgt pair) into one — concat labels, take max count
+  const edgeMap = new Map();
+  for (const l of links) {
+    const src = typeof l.source === 'object' ? l.source.key : l.source;
+    const tgt = typeof l.target === 'object' ? l.target.key : l.target;
+    const key = `${src}||${tgt}`;
+    if (edgeMap.has(key)) {
+      const existing = edgeMap.get(key);
+      if (!existing.types.includes(l.type)) existing.types.push(l.type);
+      existing.count = Math.max(existing.count, l.count || 1);
+    } else {
+      edgeMap.set(key, { source: src, target: tgt, types: [l.type], count: l.count || 1 });
+    }
+  }
+  const linksCopy = Array.from(edgeMap.values()).map(l => ({
     ...l,
-    source: typeof l.source === 'object' ? l.source.key : l.source,
-    target: typeof l.target === 'object' ? l.target.key : l.target,
+    type: l.types.join(' · '),
   }));
 
   const svgEl = document.getElementById('intel-graph-svg');