fix issues in core

core/media/application/use-cases/RequestAvatarGenerationUseCase.ts

@@ -56,13 +56,18 @@ export class RequestAvatarGenerationUseCase {
 
     try {
       const requestId = uuidv4();
-      const request = AvatarGenerationRequest.create({
+      const requestProps: Parameters<typeof AvatarGenerationRequest.create>[0] = {
         id: requestId,
         userId: input.userId,
         facePhotoUrl: input.facePhotoData,
         suitColor: input.suitColor,
-        style: input.style,
-      });
+      };
+      
+      if (input.style !== undefined) {
+        requestProps.style = input.style;
+      }
+      
+      const request = AvatarGenerationRequest.create(requestProps);
 
       await this.avatarRepo.save(request);
 
@@ -77,7 +82,7 @@ export class RequestAvatarGenerationUseCase {
         request.fail(errorMessage);
         await this.avatarRepo.save(request);
 
-        return Result.err({
+        return Result.err<void, RequestAvatarGenerationApplicationError>({
           code: 'FACE_VALIDATION_FAILED',
           details: { message: errorMessage },
         });
@@ -101,7 +106,7 @@ export class RequestAvatarGenerationUseCase {
         request.fail(errorMessage);
         await this.avatarRepo.save(request);
 
-        return Result.err({
+        return Result.err<void, RequestAvatarGenerationApplicationError>({
           code: 'GENERATION_FAILED',
           details: { message: errorMessage },
         });