Ещё фиксы от ИИ

src/LiquidCode.Tester.Worker/Services/CSharpExecutionServiceIsolate.cs

@@ -61,8 +61,15 @@ public class CSharpExecutionServiceIsolate : IExecutionService
             });
             chmodProcess?.WaitForExit();
 
-            // Prepare output file in box
+            // Prepare input/output files inside the sandbox
             var outputFilePath = Path.Combine(boxDir, "output.txt");
+            string? sandboxInputPath = null;
+
+            if (!string.IsNullOrEmpty(inputFilePath) && File.Exists(inputFilePath))
+            {
+                sandboxInputPath = Path.Combine(boxDir, "input.txt");
+                File.Copy(inputFilePath, sandboxInputPath, overwrite: true);
+            }
 
             // Run in Isolate
             var isolateResult = await _isolateService.RunAsync(new IsolateRunOptions
@@ -75,7 +82,7 @@ public class CSharpExecutionServiceIsolate : IExecutionService
                 StackLimitKb = 256 * 1024,
                 ProcessLimit = 1, // Single process for C#
                 EnableNetwork = false,
-                StdinFile = inputFilePath,
+                StdinFile = sandboxInputPath,
                 StdoutFile = outputFilePath,
                 WorkingDirectory = "/box"
             });