Add web research and source file reading

SovereignAI-Starter/flutter_app/lib/features/chat/presentation/cubit/chat_cubit.dart

@@ -88,6 +88,19 @@ class ChatCubit extends Cubit<ChatState> {
       emit(
         state.copyWith(
           isWorkspaceMode: !state.isWorkspaceMode,
+          isWebSearchMode: false,
+          clearError: true,
+        ),
+      );
+    }
+  }
+
+  void toggleWebSearchMode() {
+    if (!state.isSending) {
+      emit(
+        state.copyWith(
+          isWebSearchMode: !state.isWebSearchMode,
+          isWorkspaceMode: false,
           clearError: true,
         ),
       );
@@ -254,11 +267,11 @@ class ChatCubit extends Cubit<ChatState> {
         ),
       );
       _startElapsedTimer(generation);
-      if (state.isWorkspaceMode) {
-        answer = await _api.askWorkspaceAgent(
-          prompt,
-          model: state.selectedModel,
-        );
+      if (state.isWorkspaceMode || state.isWebSearchMode) {
+        answer =
+            state.isWorkspaceMode
+                ? await _api.askWorkspaceAgent(prompt, model: state.selectedModel)
+                : await _api.searchWeb(prompt, model: state.selectedModel);
         if (isClosed || generation != _requestGeneration) return;
         if (answer.trim().isEmpty) {
           throw Exception('لم يصل نص في إجابة الوكيل.');

SovereignAI-Starter/flutter_app/lib/features/chat/presentation/cubit/chat_state.dart

@@ -81,6 +81,7 @@ class ChatState {
     this.isLoadingHistory = true,
     this.isSending = false,
     this.isWorkspaceMode = false,
+    this.isWebSearchMode = false,
     this.error,
     this.modelName = 'جارٍ اكتشاف النموذج…',
     this.modelStatus = ModelConnectionStatus.checking,
@@ -98,6 +99,7 @@ class ChatState {
   final bool isLoadingHistory;
   final bool isSending;
   final bool isWorkspaceMode;
+  final bool isWebSearchMode;
   final String? error;
   final String modelName;
   final ModelConnectionStatus modelStatus;
@@ -116,6 +118,7 @@ class ChatState {
     bool? isLoadingHistory,
     bool? isSending,
     bool? isWorkspaceMode,
+    bool? isWebSearchMode,
     String? error,
     bool clearError = false,
     String? modelName,
@@ -138,6 +141,7 @@ class ChatState {
     isLoadingHistory: isLoadingHistory ?? this.isLoadingHistory,
     isSending: isSending ?? this.isSending,
     isWorkspaceMode: isWorkspaceMode ?? this.isWorkspaceMode,
+    isWebSearchMode: isWebSearchMode ?? this.isWebSearchMode,
     error: clearError ? null : (error ?? this.error),
     modelName: modelName ?? this.modelName,
     modelStatus: modelStatus ?? this.modelStatus,