feat: register local agent project workspaces

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

@@ -478,6 +478,26 @@ class ApiRepository {
     return (data['files'] as List<dynamic>).cast<String>();
   }
 
+  Future<List<String>> registerWorkspaceProject(String workspacePath) async {
+    final response = await http.post(
+      Uri.parse('$_baseUrl/v1/agent/projects'),
+      headers: await _userHeaders(),
+      body: jsonEncode({'workspace_path': workspacePath}),
+    );
+    _checkStatus(response);
+    final data = jsonDecode(response.body) as Map<String, dynamic>;
+    return (data['files'] as List<dynamic>).cast<String>();
+  }
+
+  Future<void> unregisterWorkspaceProject(String workspacePath) async {
+    final response = await http.delete(
+      Uri.parse('$_baseUrl/v1/agent/projects'),
+      headers: await _userHeaders(),
+      body: jsonEncode({'workspace_path': workspacePath}),
+    );
+    _checkStatus(response);
+  }
+
   Future<Map<String, dynamic>> indexWorkspaceKnowledge(
     String workspacePath,
     List<String> files,