remove k8s configs, update worker for multi-languages support, add local-submit option

src/LiquidCode.Tester.Worker/Controllers/TestController.cs

@@ -23,16 +23,63 @@ public class TestController : ControllerBase
 
         try
         {
+            // Save package to temporary file before starting background task
+            // This is necessary because IFormFile becomes unavailable after request completes
+            string? packageFilePath = null;
+            if (request.Package != null)
+            {
+                var tempDirectory = Path.Combine(Path.GetTempPath(), "worker-packages");
+                Directory.CreateDirectory(tempDirectory);
+
+                packageFilePath = Path.Combine(tempDirectory, $"package_{Guid.NewGuid()}.zip");
+
+                await using (var fileStream = new FileStream(packageFilePath, FileMode.Create, FileAccess.Write, FileShare.None))
+                {
+                    await request.Package.CopyToAsync(fileStream);
+                }
+
+                _logger.LogInformation("Package saved to temporary file: {FilePath}", packageFilePath);
+            }
+
+            // Create a copy of request data for background task
+            var backgroundRequest = new TestRequest
+            {
+                Id = request.Id,
+                MissionId = request.MissionId,
+                Language = request.Language,
+                LanguageVersion = request.LanguageVersion,
+                SourceCode = request.SourceCode,
+                CallbackUrl = request.CallbackUrl,
+                Package = null, // Will use file path instead
+                PackageFilePath = packageFilePath
+            };
+
             // Start testing in background
             _ = Task.Run(async () =>
             {
                 try
                 {
-                    await _testingService.ProcessSubmitAsync(request);
+                    await _testingService.ProcessSubmitAsync(backgroundRequest);
                 }
                 catch (Exception ex)
                 {
-                    _logger.LogError(ex, "Error processing submit {SubmitId}", request.Id);
+                    _logger.LogError(ex, "Error processing submit {SubmitId}", backgroundRequest.Id);
+                }
+                finally
+                {
+                    // Cleanup temporary package file
+                    if (packageFilePath != null && System.IO.File.Exists(packageFilePath))
+                    {
+                        try
+                        {
+                            System.IO.File.Delete(packageFilePath);
+                            _logger.LogInformation("Deleted temporary package file: {FilePath}", packageFilePath);
+                        }
+                        catch (Exception ex)
+                        {
+                            _logger.LogWarning(ex, "Failed to delete temporary package file: {FilePath}", packageFilePath);
+                        }
+                    }
                 }
             });
 
@@ -48,7 +95,7 @@ public class TestController : ControllerBase
     [HttpGet("health")]
     public IActionResult Health()
     {
-        return Ok(new { status = "healthy", service = "cpp-worker", timestamp = DateTime.UtcNow });
+        return Ok(new { status = "healthy", service = "universal-worker", timestamp = DateTime.UtcNow });
     }
 }
 
@@ -61,4 +108,5 @@ public class TestRequest
     public string SourceCode { get; set; } = string.Empty;
     public string CallbackUrl { get; set; } = string.Empty;
     public IFormFile? Package { get; set; }
+    public string? PackageFilePath { get; set; } // Internal use - path to saved package file
 }