feat: 主键自增改雪花 ID（为分库分表预留）

- 52 个 entity 主键 @TableId 由 IdType.AUTO 改为 IdType.ASSIGN_ID（雪花）
- 双服务 application.yml 的 mybatis-plus id-type 由 auto 改为 assign_id
- schema 脚本主键去掉 GENERATED BY DEFAULT AS IDENTITY

fruitshorts-module-media/src/main/java/com/fruitshorts/media/dal/entity/MediaAsset.java

@@ -16,7 +16,7 @@ import java.time.LocalDateTime;
 @TableName("media_asset")
 public class MediaAsset {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String bizType;
     private String fileName;

fruitshorts-module-media/src/main/java/com/fruitshorts/media/dal/entity/MediaRendition.java

@@ -17,7 +17,7 @@ import java.time.LocalDateTime;
 @TableName("media_rendition")
 public class MediaRendition {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long mediaAssetId;
     private Long dramaId;

fruitshorts-module-media/src/main/java/com/fruitshorts/media/dal/entity/MediaUploadTask.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("media_upload_task")
 public class MediaUploadTask {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String uploadId;
     private String bizType;

fruitshorts-module-media/src/main/java/com/fruitshorts/media/dal/entity/TranscodeTask.java

@@ -17,7 +17,7 @@ import java.time.LocalDateTime;
 @TableName("transcode_task")
 public class TranscodeTask {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long mediaAssetId;
     private Long dramaId;