Squash merge develop into master (feat #25 API users/pending, dashboards, login)

Made-with: Cursor

frontend/lib/widgets/admin/dashboard_admin.dart

@@ -73,6 +73,31 @@ class DashboardUserManagementSubBar extends StatelessWidget {
       ),
     );
   }
+
+  Widget _pillField({required double width, required Widget child}) {
+    return Container(
+      width: width,
+      height: 34,
+      decoration: BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.circular(18),
+        border: Border.all(color: Colors.black26),
+      ),
+      alignment: Alignment.centerLeft,
+      child: child,
+    );
+  }
+
+  Widget _buildAddButton() {
+    return ElevatedButton.icon(
+      onPressed: onAddPressed,
+      icon: const Icon(Icons.add),
+      label: Text(addLabel),
+    );
+  }
+
+  Widget _buildSubNavItem(BuildContext context, String title, int index) {
+    final bool isActive = index == selectedSubIndex;
     return InkWell(
       onTap: () => onSubTabChange(index),
       child: Container(