added preferences to pull from user_preferences collection. seems to be working.

frontend/auth.js

@@ -20,6 +20,12 @@
     );
   }
 
+  function getEmail() {
+    const model = pb.authStore.model || {};
+    // Prefer email, but fall back to username if email missing
+    return model.email || model.username || null;
+  }
+
   async function ensureAuth() {
     if (pb.authStore.isValid) return true;
     const path = new URL(window.location.href).pathname;
@@ -29,5 +35,5 @@
     return false;
   }
 
-  global.Auth = { pb, authHeaders, ensureAuth, getDisplayName };
+  global.Auth = { pb, authHeaders, ensureAuth, getDisplayName, getEmail };
 })(window);