fix: add explicit JoinClumn to MediaRequest media relation

Fixes intermittent NULL mediaId foreign key on media_request records byadding explicit @JoinColumn
decorator to the media relation. Without this,TypeORM's implicit FK mapping was unreliable, causing
orphaned requeststhat would crash the frontend when accessing user profiles. Also removes the
redundant @Column decorator for mediaId which conflicted withthe relation, and removes explicit
mediaId assignments in the constructorwhich are now handled correctly by TypeORM through the
relation.

server/entity/MediaRequest.ts

@@ -21,6 +21,7 @@ import {
   AfterUpdate,
   Column,
   Entity,
+  JoinColumn,
   ManyToOne,
   OneToMany,
   PrimaryGeneratedColumn,
@@ -341,7 +342,6 @@ export class MediaRequest {
       const request = new MediaRequest({
         type: MediaType.MOVIE,
         media,
-        mediaId: media.id,
         requestedBy: requestUser,
         // If the user is an admin or has the "auto approve" permission, automatically approve the request
         status: user.hasPermission(
@@ -458,7 +458,6 @@ export class MediaRequest {
       const request = new MediaRequest({
         type: MediaType.TV,
         media,
-        mediaId: media.id,
         requestedBy: requestUser,
         // If the user is an admin or has the "auto approve" permission, automatically approve the request
         status: user.hasPermission(
@@ -533,11 +532,9 @@ export class MediaRequest {
     eager: true,
     onDelete: 'CASCADE',
   })
+  @JoinColumn({ name: 'mediaId' })
   public media: Media;
 
-  @Column({ name: 'mediaId', nullable: true })
-  public mediaId: number;
-
   @ManyToOne(() => User, (user) => user.requests, {
     eager: true,
     onDelete: 'CASCADE',