constrain mobile mode switcher and expand error logs

lib/main.dart

@@ -19,7 +19,7 @@ void main() async {
   FlutterError.onError = (details) {
     AppLogger.error(
       'Flutter',
-      details.exceptionAsString(),
+      '界面渲染异常：${details.exceptionAsString()}\n$details',
       stackTrace: details.stack,
     );
     FlutterError.presentError(details);

lib/pages/workspace_page.dart

@@ -951,12 +951,15 @@ class _NativeMobileDrawerContent extends StatelessWidget {
                   ),
                 ),
                 const SizedBox(height: 12),
-                _ModeSwitcher(
-                  mode: mode,
-                  onModeChanged: onModeChanged,
-                  onSettings: onSettings,
-                  showLabelWhenSelected: true,
-                  showTooltips: false,
+                SizedBox(
+                  width: 220,
+                  child: _ModeSwitcher(
+                    mode: mode,
+                    onModeChanged: onModeChanged,
+                    onSettings: onSettings,
+                    showLabelWhenSelected: true,
+                    showTooltips: false,
+                  ),
                 ),
               ],
             ),