Respect external filter in metrics and graph

static/app.js

@@ -267,6 +267,10 @@
     if (!graphOverlay || !graphUiAvailable()) {
       return;
     }
+    const includeExternal = externalToggle ? !!externalToggle.checked : false;
+    if (graphUiAvailable() && typeof window.GraphUI.setIncludeExternal === "function") {
+      window.GraphUI.setIncludeExternal(includeExternal);
+    }
     lastFocusBeforeModal =
       document.activeElement instanceof HTMLElement ? document.activeElement : null;
     graphOverlay.classList.add("active");
@@ -282,7 +286,10 @@
         graphVideoField.value = videoId;
       }
       if (videoId) {
-        window.GraphUI.load(videoId, undefined, undefined, { updateInputs: true });
+        window.GraphUI.load(videoId, undefined, undefined, {
+          updateInputs: true,
+          includeExternal,
+        });
       }
       window.GraphUI.focusInput();
     });
@@ -1020,7 +1027,7 @@
     }
   }
 
-  function renderMetrics(data) {
+function renderMetrics(data) {
   if (!metricsContent) return;
   metricsContent.innerHTML = "";
   if (!data) return;
@@ -1058,7 +1065,8 @@ async function loadMetrics() {
     metricsStatus.textContent = "Loading metrics…";
   }
   try {
-    const res = await fetch("/api/metrics");
+    const includeExternal = externalToggle ? !!externalToggle.checked : false;
+    const res = await fetch(`/api/metrics?external=${includeExternal ? "1" : "0"}`);
     const data = await res.json();
     renderMetrics(data);
     metricsContainer.dataset.loaded = "1";
@@ -1325,6 +1333,11 @@ async function updateFrequencyChart(term, channels, year, queryMode, toggles = {
     } of ${payload.totalPages}`;
 
     (payload.items || []).forEach((item) => {
+      const isExternal = !!item.external_reference;
+      const hasTitle = typeof item.title === "string" && item.title.trim().length > 0;
+      if (isExternal && !hasTitle) {
+        return;
+      }
       const el = document.createElement("div");
       el.className = "item";
       const titleHtml =
@@ -1685,6 +1698,10 @@ async function updateFrequencyChart(term, channels, year, queryMode, toggles = {
       settings.external = !!externalToggle.checked;
       persistSettings();
       loadChannels().then(() => runSearch(0));
+      loadMetrics();
+      if (graphUiAvailable()) {
+        window.GraphUI.setIncludeExternal(settings.external);
+      }
     });
   }
   if (queryToggle) {