Add generation status and cancel control

SovereignAI-Starter/flutter_app/lib/core/network/api_repository.dart

@@ -15,8 +15,14 @@ class ApiRepository {
   String _baseUrl;
   String? _cachedUserId;
   Future<String>? _loadingUserId;
+  http.Client? _activeRequestClient;
   String get baseUrl => _baseUrl;
 
+  void cancelActiveRequest() {
+    _activeRequestClient?.close();
+    _activeRequestClient = null;
+  }
+
   String newId() => _uuid.v4();
 
   void setBaseUrl(String value) =>
@@ -172,19 +178,31 @@ class ApiRepository {
   }
 
   Future<String> askWorkspaceAgent(String task, {String? model}) async {
-    final response = await http
-        .post(
-          Uri.parse('$_baseUrl/v1/agent/workspace'),
-          headers: const {'Content-Type': 'application/json'},
-          body: jsonEncode({'task': task, if (model != null) 'model': model}),
-        )
-        .timeout(const Duration(minutes: 10));
-    _checkStatus(response);
-    final data = jsonDecode(response.body) as Map<String, dynamic>;
-    final result = data['result'] as String? ?? '';
-    final files = (data['files'] as List<dynamic>? ?? const []).cast<String>();
-    if (files.isEmpty) return result;
-    return '$result\n\nالمصادر المقروءة: ${files.join('، ')}';
+    final client = http.Client();
+    _activeRequestClient = client;
+    try {
+      final request =
+          http.Request('POST', Uri.parse('$_baseUrl/v1/agent/workspace'))
+            ..headers['Content-Type'] = 'application/json'
+            ..body = jsonEncode({
+              'task': task,
+              if (model != null) 'model': model,
+            });
+      final streamed = await client
+          .send(request)
+          .timeout(const Duration(minutes: 10));
+      final response = await http.Response.fromStream(streamed);
+      _checkStatus(response);
+      final data = jsonDecode(response.body) as Map<String, dynamic>;
+      final result = data['result'] as String? ?? '';
+      final files =
+          (data['files'] as List<dynamic>? ?? const []).cast<String>();
+      if (files.isEmpty) return result;
+      return '$result\n\nالمصادر المقروءة: ${files.join('، ')}';
+    } finally {
+      if (identical(_activeRequestClient, client)) _activeRequestClient = null;
+      client.close();
+    }
   }
 
   Stream<String> completeStream(
@@ -192,6 +210,7 @@ class ApiRepository {
     String? model,
   }) async* {
     final client = http.Client();
+    _activeRequestClient = client;
     try {
       final request =
           http.Request('POST', Uri.parse('$_baseUrl/v1/chat/stream'))
@@ -237,6 +256,7 @@ class ApiRepository {
       }
       if (!completed) throw Exception('انقطع بث الإجابة قبل اكتماله.');
     } finally {
+      if (identical(_activeRequestClient, client)) _activeRequestClient = null;
       client.close();
     }
   }