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-creator/src/main/java/com/fruitshorts/creator/dal/entity/ContentSubmission.java

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

fruitshorts-module-creator/src/main/java/com/fruitshorts/creator/dal/entity/Creator.java

@@ -18,7 +18,7 @@ import java.time.LocalDateTime;
 @TableName("creator")
 public class Creator {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     /** 关联 C 端账号 app_user.id */
     private Long userId;

fruitshorts-module-creator/src/main/java/com/fruitshorts/creator/dal/entity/CreatorDocument.java

@@ -17,7 +17,7 @@ import java.time.LocalDateTime;
 @TableName("creator_document")
 public class CreatorDocument {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long creatorId;
     /** ID_CARD / BUSINESS_LICENSE / CONTRACT */