Fix instance settings prefs JS 404 on static route.

Register instance_settings_prefs.js (and options_panel.js) in install_instance_theme_static; add delegated click handlers for embed lazy tabs.

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

lib/common/static/instance_settings_prefs.js

@@ -373,6 +373,39 @@
     }
   }
 
+  function installDelegatedHandlers() {
+    if (document.documentElement.dataset.prefsDelegateBound === "1") return;
+    document.documentElement.dataset.prefsDelegateBound = "1";
+    document.addEventListener("click", (ev) => {
+      const target = ev.target;
+      if (!(target instanceof Element)) return;
+      if (target.closest("#display-prefs-save")) {
+        ev.preventDefault();
+        void saveDisplayPrefs();
+        return;
+      }
+      if (target.closest("#env-config-save")) {
+        ev.preventDefault();
+        void saveEnvConfig(false);
+        return;
+      }
+      if (target.closest("#env-config-save-restart")) {
+        ev.preventDefault();
+        void saveEnvConfig(true);
+        return;
+      }
+      if (target.closest("#env-config-reload")) {
+        ev.preventDefault();
+        void loadEnvConfig(true);
+        return;
+      }
+      if (target.closest("#pwd-save-btn")) {
+        ev.preventDefault();
+        void savePassword();
+      }
+    });
+  }
+
   function bindClickOnce(id, handler) {
     const el = document.getElementById(id);
     if (!el || el.dataset.bound === "1") return;
@@ -389,6 +422,7 @@
   }
 
   function initPage() {
+    installDelegatedHandlers();
     bindEvents();
     loadDisplayPrefsForm(false);
     loadEnvConfig(false);