Fix instance stats week/month tabs not responding after embed preload.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/common/static/instance_stats.js

@@ -61,20 +61,25 @@
     switchStatsPeriod(period);
   }
 
-  function bindPeriodTabs() {
-    document.querySelectorAll(".stats-period-tab").forEach(function (btn) {
-      if (btn.getAttribute("data-stats-bound") === "1") return;
-      btn.setAttribute("data-stats-bound", "1");
-      btn.addEventListener("click", function () {
-        switchStatsPeriod(btn.getAttribute("data-stats-period") || "day");
-      });
+  function ensurePeriodTabDelegation() {
+    if (global.__instanceStatsTabsDelegated) return;
+    global.__instanceStatsTabsDelegated = true;
+    document.addEventListener("click", function (e) {
+      var btn =
+        e.target && e.target.closest
+          ? e.target.closest(".stats-period-tab")
+          : null;
+      if (!btn) return;
+      var card = document.getElementById("stats-card");
+      if (!card || !card.contains(btn)) return;
+      switchStatsPeriod(btn.getAttribute("data-stats-period") || "day");
     });
   }
 
   function initStatsFromUrl() {
     var sel = statsSegmentSelect();
     if (!sel) return;
-    bindPeriodTabs();
+    ensurePeriodTabDelegation();
     var url = new URLSearchParams(global.location.search);
     var segKey = url.get("stats_segment");
     if (
@@ -89,6 +94,8 @@
     switchStatsPeriod(period);
   }
 
+  ensurePeriodTabDelegation();
+
   global.switchStatsSegment = switchStatsSegment;
   global.switchStatsPeriod = switchStatsPeriod;
   global.initStatsFromUrl = initStatsFromUrl;