refactor admin navigation; update links to ingest pages and improve loading of data in parallel

public/admin/assets/js/intel-graph.js

@@ -586,7 +586,8 @@ document.addEventListener("DOMContentLoaded", async () => {
     applyGraphFilters();
   });
 
-  const ok = await loadIntelStatsRow();
-  if (!ok) return;
-  loadIntelGraph();
+  // both calls are independent — run them concurrently. the graph
+  // endpoint returns empty nodes/edges when intelligence db is missing
+  // so we dont need to gate on the stats check.
+  Promise.all([loadIntelStatsRow(), loadIntelGraph()]);
 });