Fix assistant skill picker loading

lib/features/assistant/assistant_page_composer_bar.dart

@@ -179,6 +179,7 @@ class ComposerBarStateInternal extends State<ComposerBarInternal> {
     }
     setState(resetSkillPickerSearchInternal);
     skillPickerPortalControllerInternal.show();
+    refreshSkillsForPickerInternal();
     WidgetsBinding.instance.addPostFrameCallback((_) {
       if (!mounted || !skillPickerPortalControllerInternal.isShowing) {
         return;
@@ -187,6 +188,19 @@ class ComposerBarStateInternal extends State<ComposerBarInternal> {
     });
   }
 
+  void refreshSkillsForPickerInternal() {
+    final skillsController = widget.controller.skillsController;
+    if (widget.controller.skills.isNotEmpty || skillsController.loading) {
+      return;
+    }
+    final selectedAgentId = widget.controller.selectedAgentId.trim();
+    unawaited(
+      skillsController.refresh(
+        agentId: selectedAgentId.isEmpty ? null : selectedAgentId,
+      ),
+    );
+  }
+
   @override
   void dispose() {
     widget.controller.removeListener(handleControllerChangedInternal);

lib/features/assistant/assistant_page_composer_state_helpers.dart

@@ -94,7 +94,7 @@ Widget buildSkillPickerOverlayForInternal(
           searchFocusNode: state.skillPickerSearchFocusNodeInternal,
           selectedSkillKeys: state.widget.selectedSkillKeys,
           filteredSkills: state.filteredSkillOptionsInternal(),
-          isLoading: false,
+          isLoading: state.widget.controller.skillsController.loading,
           hasQuery: state.skillPickerQueryInternal.trim().isNotEmpty,
           onQueryChanged: state.setSkillPickerQueryInternal,
           onToggleSkill: (skillKey) => state.widget.onToggleSkill(skillKey),

test/features/assistant/assistant_lower_pane_test.dart

@@ -481,6 +481,85 @@ void main() {
       expect(sendCount, 1);
     });
 
+    testWidgets('skill picker shows loading state while skills refresh', (
+      tester,
+    ) async {
+      final controller = AppController(
+        environmentOverride: const <String, String>{},
+      );
+      addTearDown(controller.dispose);
+      controller.skillsController.loadingInternal = true;
+
+      await controller.sessionsController.switchSession('unit-fixture-task-a');
+
+      await tester.pumpWidget(
+        _buildTestApp(child: _buildLowerPane(controller: controller)),
+      );
+      await tester.pumpAndSettle();
+
+      await tester.tap(find.byKey(const Key('assistant-skill-picker-button')));
+      await tester.pump();
+      await tester.pump(const Duration(milliseconds: 100));
+
+      expect(find.text('正在加载技能…'), findsOneWidget);
+      expect(find.text('当前没有已加载技能。'), findsNothing);
+    });
+
+    testWidgets('skill picker displays refreshed skills and filters them', (
+      tester,
+    ) async {
+      final controller = AppController(
+        environmentOverride: const <String, String>{},
+      );
+      addTearDown(controller.dispose);
+
+      await controller.sessionsController.switchSession('unit-fixture-task-a');
+
+      await tester.pumpWidget(
+        _buildTestApp(
+          child: _buildLowerPane(
+            controller: controller,
+            availableSkills: const <ComposerSkillOptionInternal>[
+              ComposerSkillOptionInternal(
+                key: 'browser-automation',
+                label: 'Browser Automation',
+                description: 'Automate browsers',
+                sourceLabel: 'agents-skills-personal',
+                groupLabel: 'Agent Skills',
+                groupSortOrder: 1,
+                icon: Icons.key_rounded,
+              ),
+              ComposerSkillOptionInternal(
+                key: 'pdf',
+                label: 'PDF Writer',
+                description: 'Create PDF files',
+                sourceLabel: 'openclaw-workspace',
+                groupLabel: 'Workspace Skills',
+                groupSortOrder: 0,
+                icon: Icons.key_rounded,
+              ),
+            ],
+          ),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      await tester.tap(find.byKey(const Key('assistant-skill-picker-button')));
+      await tester.pumpAndSettle();
+
+      expect(find.text('Browser Automation'), findsOneWidget);
+      expect(find.text('PDF Writer'), findsOneWidget);
+
+      await tester.enterText(
+        find.byKey(const Key('assistant-skill-picker-search')),
+        'browser',
+      );
+      await tester.pumpAndSettle();
+
+      expect(find.text('Browser Automation'), findsOneWidget);
+      expect(find.text('PDF Writer'), findsNothing);
+    });
+
     testWidgets('keeps bottom action row visible when pane height is reduced', (
       tester,
     ) async {
@@ -657,6 +736,8 @@ Widget _buildLowerPane({
   required AppController controller,
   TextEditingController? inputController,
   Future<void> Function()? onSend,
+  List<ComposerSkillOptionInternal> availableSkills =
+      const <ComposerSkillOptionInternal>[],
 }) {
   final composerController = inputController ?? TextEditingController();
   return SurfaceCard(
@@ -670,7 +751,7 @@ Widget _buildLowerPane({
       modelLabel: 'gpt-5.4',
       modelOptions: const <String>[],
       attachments: const <ComposerAttachmentInternal>[],
-      availableSkills: const <ComposerSkillOptionInternal>[],
+      availableSkills: availableSkills,
       selectedSkillKeys: const <String>[],
       onRemoveAttachment: (_) {},
       onToggleSkill: (_) {},