refactor: unify skills+cli runtime and streamline ag-ui flow

apps/lib/features/chat/presentation/bloc/chat_bloc_events.dart

@@ -210,16 +210,42 @@ extension _ChatBlocEvents on ChatBloc {
     if (_shouldRefreshCalendarForTool(event)) {
       unawaited(_refreshCalendarAfterToolMutation());
     }
-    emit(
-      state.copyWith(
-        items: state.items.map((item) {
-          if (item is ToolCallItem && item.id == event.toolCallId) {
-            return item.copyWith(status: ToolCallStatus.completed);
-          }
-          return item;
-        }).toList(),
-      ),
+    final timestamp = DateTime.now();
+    final items = state.items.map((item) {
+      if (item is ToolCallItem && item.id == event.toolCallId) {
+        return item.copyWith(status: ToolCallStatus.completed);
+      }
+      return item;
+    }).toList();
+
+    final uiSchema = event.uiSchema;
+    if (uiSchema != null) {
+      _upsertToolResultUi(items, event.toolCallId, uiSchema, timestamp);
+    }
+
+    emit(state.copyWith(items: items));
+  }
+
+  void _upsertToolResultUi(
+    List<ChatListItem> items,
+    String toolCallId,
+    Map<String, dynamic> uiSchema,
+    DateTime timestamp,
+  ) {
+    final uiItemId = '$toolCallId-ui';
+    final uiItem = ToolResultItem(
+      id: uiItemId,
+      callId: toolCallId,
+      uiSchema: uiSchema,
+      timestamp: timestamp,
+      sender: MessageSender.ai,
     );
+    final existingIndex = items.indexWhere((item) => item.id == uiItemId);
+    if (existingIndex >= 0) {
+      items[existingIndex] = uiItem;
+      return;
+    }
+    items.add(uiItem);
   }
 
   void _handleToolCallError(ToolCallErrorEvent event) {