fix issues in core

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

@@ -43,7 +43,7 @@ export class DeleteMediaUseCase {
       const media = await this.mediaRepo.findById(input.mediaId);
 
       if (!media) {
-        return Result.err({
+        return Result.err<void, DeleteMediaApplicationError>({
           code: 'MEDIA_NOT_FOUND',
           details: { message: 'Media not found' },
         });
@@ -65,14 +65,13 @@ export class DeleteMediaUseCase {
     } catch (error) {
       const err = error instanceof Error ? error : new Error(String(error));
 
-      this.logger.error('[DeleteMediaUseCase] Error deleting media', {
-        error: err.message,
+      this.logger.error('[DeleteMediaUseCase] Error deleting media', err, {
         mediaId: input.mediaId,
       });
 
-      return Result.err({
+      return Result.err<void, DeleteMediaApplicationError>({
         code: 'REPOSITORY_ERROR',
-        details: { message: err.message ?? 'Unexpected repository error' },
+        details: { message: err.message || 'Unexpected repository error' },
       });
     }
   }