feat: 新增剧集封面、集数管理与上传优化功能

1. 新增Cover实体类并注册到数据库模块
2. 为剧集添加总集数字段及自动创建集数槽功能
3. 新增管理员更新剧集集数接口
4. 优化发布剧集列表：支持标题过滤与默认分页大小10
5. 扩展MediaUploadJob实体字段，完善媒体上传流程
6. 重构订单与媒体服务，新增数据库持久化支持
7. 新增剧集标题过滤的端到端测试用例

src/modules/dramas/dramas.controller.ts

@@ -102,6 +102,22 @@ export class DramasController {
     return this.dramasService.updateEpisode(Number(id), dto);
   }
 
+  @Patch('/api/admin/v1/dramas/:dramaId/episodes/:episodeId')
+  @ApiBearerAuth()
+  @UseGuards(AdminJwtAuthGuard, PermissionsGuard)
+  @RequirePermissions('episode:update')
+  updateDramaEpisode(
+    @Param('dramaId') dramaId: string,
+    @Param('episodeId') episodeId: string,
+    @Body() dto: UpdateEpisodeDto,
+  ) {
+    return this.dramasService.updateDramaEpisode(
+      Number(dramaId),
+      Number(episodeId),
+      dto,
+    );
+  }
+
   @Post('/api/admin/v1/dramas/:id/submit-review')
   @ApiBearerAuth()
   @UseGuards(AdminJwtAuthGuard, PermissionsGuard)
@@ -128,10 +144,12 @@ export class DramasController {
   listPublishedDramas(
     @Query('page') page?: string,
     @Query('pageSize') pageSize?: string,
+    @Query('title') title?: string,
   ) {
     return this.dramasService.listPublishedDramas({
       page: Number(page) || 1,
-      pageSize: Number(pageSize) || 20,
+      pageSize: Number(pageSize) || 10,
+      title,
     });
   }