feat: S0 主键改雪花（DDL 去 identity + 实体 ASSIGN_ID + 雪花配置）

为什么：自增主键把 ID 分配锁在单库序列上，分库分表时无法横向扩展。趁线上业务数据
近零（只有系统种子表有量）先改，代价最低。

- sql/schema.sql、sql/schema-phase1.sql、sql/partition-maintenance.sql：61 处
  GENERATED BY DEFAULT AS IDENTITY 去掉，主键改 BIGINT 无默认值
- 52 个实体 @TableId IdType.AUTO -> IdType.ASSIGN_ID；两个入口 id-type: assign_id，
  并加 global-config.sequence.worker-id/datacenter-id（单机固定值，多实例需按实例分配）
- 新增 sql/migrate-s0-snowflake.sql：存量库幂等迁移，走 DROP IDENTITY 保留数据，不重建表
- 实测：三份建表脚本在新库连跑两遍幂等；线上 57 张表 identity 归零；
  watch_history/playback_ticket/order_event 的主键与唯一索引仍含分区键

fruitshorts-admin-api/src/main/resources/application.yml

@@ -26,10 +26,15 @@ mybatis-plus:
   global-config:
     banner: false
     db-config:
-      id-type: auto
+      # 主键由应用侧雪花算法生成（S0），数据库不再自增
+      id-type: assign_id
       logic-delete-field: deleted
       logic-delete-value: 1
       logic-not-delete-value: 0
+    sequence:
+      # 单机开发用固定值；上多实例前必须改成按实例分配（环境变量注入），否则会撞 ID
+      worker-id: 1
+      datacenter-id: 1
 
 fruitshorts:
   media:

fruitshorts-app-api/src/main/resources/application.yml

@@ -21,10 +21,15 @@ mybatis-plus:
   global-config:
     banner: false
     db-config:
-      id-type: auto
+      # 主键由应用侧雪花算法生成（S0），数据库不再自增
+      id-type: assign_id
       logic-delete-field: deleted
       logic-delete-value: 1
       logic-not-delete-value: 0
+    sequence:
+      # 单机开发用固定值；上多实例前必须改成按实例分配（环境变量注入），否则会撞 ID
+      worker-id: 1
+      datacenter-id: 1
 
 fruitshorts:
   interaction:

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/CoinLedger.java

@@ -12,7 +12,7 @@ import java.time.LocalDateTime;
 @TableName("coin_ledger")
 public class CoinLedger {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     /** 正数入账、负数出账 */

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/Entitlement.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("entitlement")
 public class Entitlement {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long dramaId;

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/OrderEvent.java

@@ -12,7 +12,7 @@ import java.time.LocalDateTime;
 @TableName("order_event")
 public class OrderEvent {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String orderNo;
     private String event;

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/Orders.java

@@ -16,7 +16,7 @@ import java.time.LocalDateTime;
 @TableName("orders")
 public class Orders {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String orderNo;
     private Long userId;

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/Product.java

@@ -16,7 +16,7 @@ import java.time.LocalDateTime;
 @TableName("product")
 public class Product {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String code;
     private String name;

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/ReconcileTask.java

@@ -14,7 +14,7 @@ import java.time.LocalDateTime;
 @TableName("reconcile_task")
 public class ReconcileTask {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private LocalDate bizDate;
     private String platform;

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/StoreReceipt.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("store_receipt")
 public class StoreReceipt {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String platform;
     private String transactionId;

fruitshorts-module-commerce/src/main/java/com/fruitshorts/commerce/dal/entity/Wallet.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("wallet")
 public class Wallet {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long coinBalance;

fruitshorts-module-content/src/main/java/com/fruitshorts/content/dal/entity/ContentBanner.java

@@ -14,7 +14,7 @@ import java.time.LocalDateTime;
 @TableName("content_banner")
 public class ContentBanner {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String imageUrl;
     /** 展示位置，列名为 slot（position 在 PostgreSQL 里是关键字） */

fruitshorts-module-content/src/main/java/com/fruitshorts/content/dal/entity/Drama.java

@@ -14,7 +14,7 @@ import java.time.LocalDateTime;
 @TableName("drama")
 public class Drama {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String code;
     private String title;

fruitshorts-module-content/src/main/java/com/fruitshorts/content/dal/entity/DramaCategory.java

@@ -9,7 +9,7 @@ import lombok.Data;
 @TableName("drama_category")
 public class DramaCategory {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String name;
     private Integer sort;

fruitshorts-module-content/src/main/java/com/fruitshorts/content/dal/entity/DramaEpisode.java

@@ -14,7 +14,7 @@ import java.time.LocalDateTime;
 @TableName("drama_episode")
 public class DramaEpisode {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long dramaId;
     private Integer epNo;

fruitshorts-module-content/src/main/java/com/fruitshorts/content/dal/entity/DramaReviewRecord.java

@@ -11,7 +11,7 @@ import java.time.LocalDateTime;
 @TableName("drama_review_record")
 public class DramaReviewRecord {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String bizType;
     private Long bizId;

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

@@ -15,7 +15,7 @@ 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

@@ -16,7 +16,7 @@ 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

@@ -15,7 +15,7 @@ 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 */

fruitshorts-module-interaction/src/main/java/com/fruitshorts/interaction/dal/entity/ContentAuditRecord.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("content_audit_record")
 public class ContentAuditRecord {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     /** COMMENT/DRAMA/AVATAR/CREATOR */
     private String bizType;

fruitshorts-module-interaction/src/main/java/com/fruitshorts/interaction/dal/entity/ContentComment.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("content_comment")
 public class ContentComment {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long dramaId;
     private Long episodeId;

fruitshorts-module-interaction/src/main/java/com/fruitshorts/interaction/dal/entity/ContentLike.java

@@ -13,7 +13,7 @@ import java.time.LocalDateTime;
 @TableName("content_like")
 public class ContentLike {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     /** DRAMA/EPISODE/COMMENT */

fruitshorts-module-interaction/src/main/java/com/fruitshorts/interaction/dal/entity/ContentReport.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("content_report")
 public class ContentReport {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long reporterId;
     /** COMMENT/USER/DRAMA */

fruitshorts-module-interaction/src/main/java/com/fruitshorts/interaction/dal/entity/ContentShare.java

@@ -12,7 +12,7 @@ import java.time.LocalDateTime;
 @TableName("content_share")
 public class ContentShare {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long dramaId;

fruitshorts-module-interaction/src/main/java/com/fruitshorts/interaction/dal/entity/SensitiveWord.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("sensitive_word")
 public class SensitiveWord {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String word;
     /** POLITICS/PORN/ABUSE/AD/RELIGION */

fruitshorts-module-interaction/src/main/java/com/fruitshorts/interaction/dal/entity/UserBlocklist.java

@@ -13,7 +13,7 @@ import java.time.LocalDateTime;
 @TableName("user_blocklist")
 public class UserBlocklist {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long blockedUserId;

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

@@ -14,7 +14,7 @@ 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

@@ -15,7 +15,7 @@ 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

@@ -13,7 +13,7 @@ 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

@@ -15,7 +15,7 @@ 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;

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/dal/entity/DownloadLicense.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("download_license")
 public class DownloadLicense {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long dramaId;

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/dal/entity/DownloadTask.java

@@ -18,7 +18,7 @@ import java.time.LocalDateTime;
 @TableName("download_task")
 public class DownloadTask {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private String deviceId;

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/dal/entity/PlaybackTicket.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("playback_ticket")
 public class PlaybackTicket {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String ticketNo;
     private Long userId;

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/dal/entity/UserFavorite.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("user_favorite")
 public class UserFavorite {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long dramaId;

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/dal/entity/WatchHistory.java

@@ -16,7 +16,7 @@ import java.time.LocalDateTime;
 @TableName("watch_history")
 public class WatchHistory {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long dramaId;

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/dal/entity/WatchProgress.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("watch_progress")
 public class WatchProgress {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long dramaId;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/AdminUser.java

@@ -14,7 +14,7 @@ import java.time.LocalDateTime;
 @TableName("sys_admin_user")
 public class AdminUser {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String username;
     private String password;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/AdminUserRole.java

@@ -13,7 +13,7 @@ import lombok.NoArgsConstructor;
 @TableName("sys_admin_user_role")
 public class AdminUserRole {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private Long roleId;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/AuditLog.java

@@ -17,7 +17,7 @@ import java.time.LocalDateTime;
 @TableName("audit_log")
 public class AuditLog {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     /** ORDER / ENTITLEMENT / USER / CREATOR / PRICE */
     private String bizType;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/Menu.java

@@ -13,7 +13,7 @@ import java.time.LocalDateTime;
 @TableName("sys_menu")
 public class Menu {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long parentId;
     private String title;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/OperationLog.java

@@ -11,7 +11,7 @@ import java.time.LocalDateTime;
 @TableName("sys_operation_log")
 public class OperationLog {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long adminUserId;
     private String username;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/Permission.java

@@ -9,7 +9,7 @@ import lombok.Data;
 @TableName("sys_permission")
 public class Permission {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String code;
     private String name;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/Role.java

@@ -14,7 +14,7 @@ import java.time.LocalDateTime;
 @TableName("sys_role")
 public class Role {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String name;
     private String code;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/RoleCategory.java

@@ -14,7 +14,7 @@ import java.time.LocalDateTime;
 @TableName("sys_role_category")
 public class RoleCategory {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String name;
     private String description;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/RoleMenu.java

@@ -13,7 +13,7 @@ import lombok.NoArgsConstructor;
 @TableName("sys_role_menu")
 public class RoleMenu {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long roleId;
     private Long menuId;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/RolePermission.java

@@ -13,7 +13,7 @@ import lombok.NoArgsConstructor;
 @TableName("sys_role_permission")
 public class RolePermission {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long roleId;
     private Long permissionId;

fruitshorts-module-system/src/main/java/com/fruitshorts/system/dal/entity/SysConfig.java

@@ -9,7 +9,7 @@ import lombok.Data;
 @TableName("sys_config")
 public class SysConfig {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String configKey;
     private String configValue;

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppAccountDeletion.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("app_account_deletion")
 public class AppAccountDeletion {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     /** pending/cancelled/completed */

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppUser.java

@@ -16,7 +16,7 @@ import java.time.LocalDateTime;
 @TableName("app_user")
 public class AppUser {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     /** 对外用户标识，接口只暴露 uid，不暴露自增 ID */
     private String uid;

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppUserBanRecord.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("app_user_ban_record")
 public class AppUserBanRecord {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     /** BAN/LIMIT/MUTE */

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppUserConsent.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("app_user_consent")
 public class AppUserConsent {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private String scene;

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppUserCredential.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("app_user_credential")
 public class AppUserCredential {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     /** PHONE/EMAIL/APPLE/GOOGLE */

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppUserDevice.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("app_user_device")
 public class AppUserDevice {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private String deviceId;

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppUserOtp.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("app_user_otp")
 public class AppUserOtp {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private String scene;
     private String targetType;

fruitshorts-module-user/src/main/java/com/fruitshorts/user/dal/entity/AppUserSession.java

@@ -15,7 +15,7 @@ import java.time.LocalDateTime;
 @TableName("app_user_session")
 public class AppUserSession {
 
-    @TableId(type = IdType.AUTO)
+    @TableId(type = IdType.ASSIGN_ID)
     private Long id;
     private Long userId;
     private String refreshTokenHash;

sql/migrate-s0-snowflake.sql

@@ -0,0 +1,49 @@
+-- Author: fruit.com.cn
+--
+-- S0 主键改雪花 · 存量库迁移（PostgreSQL 18）
+--
+-- 背景：第一阶段建表用的是 GENERATED BY DEFAULT AS IDENTITY（数据库自增序列），
+--   这会让 ID 分配集中在单库的序列上，一旦分库分表就无法横向扩展。
+--   S0 把主键改成应用侧雪花 ID（MyBatis-Plus IdType.ASSIGN_ID），
+--   DDL 侧只需要把 identity 去掉——序列不再需要。
+--
+-- 本脚本只做一件事：把所有 identity 列改成普通 BIGINT（**保留已有数据，不重建表**）。
+--   刻意不用 DROP TABLE / TRUNCATE，避免误伤存量数据。
+--   幂等：已经迁移过的库再跑一遍不做任何改动，NOTICE 里的数字会是 0。
+--
+-- 执行：psql -h 127.0.0.1 -U fruitshorts -d fruitshorts -f sql/migrate-s0-snowflake.sql
+-- 复查：脚本末尾的注释 SQL（改写后应返回 0 行）
+
+DO $$
+DECLARE
+    r      record;
+    v_done int := 0;
+BEGIN
+    -- relispartition = false 表示"只处理顶层表"：
+    --   分区父表在 pg_class 里 relkind = 'p'，月分区子表 relispartition = true；
+    --   identity 定义在父表上，子表跟着继承，所以逐个改子表是多余的。
+    FOR r IN
+        SELECT c.oid::regclass AS tbl, a.attname AS col
+        FROM pg_class c
+        JOIN pg_namespace n ON n.oid = c.relnamespace
+        JOIN pg_attribute a ON a.attrelid = c.oid
+        WHERE n.nspname = 'public'
+          AND c.relkind IN ('r', 'p')
+          AND c.relispartition = false
+          AND a.attidentity <> ''
+          AND a.attnum > 0
+        ORDER BY c.relname
+    LOOP
+        EXECUTE format('ALTER TABLE %s ALTER COLUMN %I DROP IDENTITY IF EXISTS', r.tbl, r.col);
+        v_done := v_done + 1;
+    END LOOP;
+    RAISE NOTICE 'S0 迁移完成：处理 % 个 identity 列（重复执行时为 0）', v_done;
+END $$;
+
+-- 复查用（结果应为 0 行）：
+-- SELECT c.relname, a.attname
+--   FROM pg_class c
+--   JOIN pg_namespace n ON n.oid = c.relnamespace
+--   JOIN pg_attribute a ON a.attrelid = c.oid
+--  WHERE n.nspname = 'public' AND a.attidentity <> ''
+--  ORDER BY 1, 2;

sql/partition-maintenance.sql

@@ -99,7 +99,7 @@ BEGIN
     END IF;
 
     CREATE TABLE IF NOT EXISTS playback_ticket (
-      id         BIGINT GENERATED BY DEFAULT AS IDENTITY,
+      id         BIGINT,
       ticket_no  VARCHAR(40)  NOT NULL,
       user_id    BIGINT       NOT NULL DEFAULT 0,
       drama_id   BIGINT       NOT NULL,
@@ -134,7 +134,7 @@ BEGIN
     END IF;
 
     CREATE TABLE IF NOT EXISTS order_event (
-      id          BIGINT GENERATED BY DEFAULT AS IDENTITY,
+      id          BIGINT,
       order_no    VARCHAR(40)  NOT NULL,
       event       VARCHAR(32)  NOT NULL,
       from_status VARCHAR(16)  NOT NULL DEFAULT '',

sql/schema-phase1.sql

@@ -9,7 +9,7 @@
 --   具体的月分区由 sql/partition-maintenance.sql 创建（并把已存在的普通表转成分区表）。
 --
 -- 命名与类型约定（与 sql/schema.sql 保持一致）：
---   BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY
+--   BIGINT PRIMARY KEY（不设默认值；主键由应用侧雪花算法生成：MyBatis-Plus IdType.ASSIGN_ID）
 --   布尔语义用 SMALLINT（1/0），时间用 TIMESTAMP(3)，默认 CURRENT_TIMESTAMP
 --   逻辑删除 deleted SMALLINT NOT NULL DEFAULT 0
 --   updated_at 由 set_updated_at() 触发器维护
@@ -53,7 +53,7 @@ ALTER TABLE media_asset ADD COLUMN IF NOT EXISTS storage_type     VARCHAR(16) NO
 -- ============================================================
 
 CREATE TABLE IF NOT EXISTS app_user (
-  id                BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id                BIGINT PRIMARY KEY,
   uid               VARCHAR(32)  NOT NULL,                      -- 对外展示的用户标识，避免暴露自增 ID
   nickname          VARCHAR(64)  NOT NULL DEFAULT '',
   avatar_url        VARCHAR(512) NOT NULL DEFAULT '',
@@ -89,7 +89,7 @@ CREATE INDEX IF NOT EXISTS idx_app_user_created ON app_user (created_at DESC);
 COMMENT ON TABLE app_user IS 'C 端用户';
 
 CREATE TABLE IF NOT EXISTS app_user_credential (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   user_id       BIGINT       NOT NULL,
   type          VARCHAR(16)  NOT NULL,                          -- PHONE/EMAIL/APPLE/GOOGLE
   identifier    VARCHAR(191) NOT NULL,                          -- E.164 手机号 / 邮箱 / 第三方唯一标识
@@ -108,7 +108,7 @@ CREATE INDEX IF NOT EXISTS idx_app_credential_user ON app_user_credential (user_
 COMMENT ON TABLE app_user_credential IS 'C 端登录凭证（手机号/邮箱/第三方）';
 
 CREATE TABLE IF NOT EXISTS app_user_session (
-  id                 BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id                 BIGINT PRIMARY KEY,
   user_id            BIGINT       NOT NULL,
   refresh_token_hash VARCHAR(64)  NOT NULL,                     -- SHA-256，不存明文
   device_id          VARCHAR(128) NOT NULL DEFAULT '',
@@ -130,7 +130,7 @@ CREATE INDEX IF NOT EXISTS idx_app_session_user ON app_user_session (user_id, re
 COMMENT ON TABLE app_user_session IS 'C 端会话（可多设备）';
 
 CREATE TABLE IF NOT EXISTS app_user_otp (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   scene         VARCHAR(16)  NOT NULL,                          -- REGISTER/LOGIN/RESET_PWD/BIND
   target_type   VARCHAR(16)  NOT NULL,                          -- PHONE/EMAIL
   target        VARCHAR(191) NOT NULL,
@@ -150,7 +150,7 @@ CREATE INDEX IF NOT EXISTS idx_app_otp_ip ON app_user_otp (send_ip, created_at D
 COMMENT ON TABLE app_user_otp IS '验证码发送与校验记录（同时用于反刷频控）';
 
 CREATE TABLE IF NOT EXISTS app_user_consent (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   user_id    BIGINT       NOT NULL,
   scene      VARCHAR(32)  NOT NULL,                             -- PRIVACY/TERMS/MARKETING/PERSONALIZED_AD
   version    VARCHAR(32)  NOT NULL DEFAULT '',
@@ -165,7 +165,7 @@ CREATE INDEX IF NOT EXISTS idx_app_consent_user ON app_user_consent (user_id, sc
 COMMENT ON TABLE app_user_consent IS '同意管理记录，商店审核与隐私合规要求可追溯';
 
 CREATE TABLE IF NOT EXISTS app_user_device (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   user_id       BIGINT       NOT NULL,
   device_id     VARCHAR(128) NOT NULL,
   platform      VARCHAR(16)  NOT NULL DEFAULT '',
@@ -181,7 +181,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_app_device ON app_user_device (user_id, dev
 COMMENT ON TABLE app_user_device IS '用户设备，用于下载授权与并发播放数限制';
 
 CREATE TABLE IF NOT EXISTS app_user_ban_record (
-  id             BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id             BIGINT PRIMARY KEY,
   user_id        BIGINT       NOT NULL,
   type           VARCHAR(16)  NOT NULL,                         -- BAN/LIMIT/MUTE
   reason_code    VARCHAR(32)  NOT NULL DEFAULT '',
@@ -205,7 +205,7 @@ CREATE INDEX IF NOT EXISTS idx_app_ban_user ON app_user_ban_record (user_id, sta
 COMMENT ON TABLE app_user_ban_record IS '封禁/限制与申诉记录';
 
 CREATE TABLE IF NOT EXISTS app_account_deletion (
-  id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id           BIGINT PRIMARY KEY,
   user_id      BIGINT       NOT NULL,
   status       VARCHAR(16)  NOT NULL DEFAULT 'pending',         -- pending/cancelled/completed
   reason       VARCHAR(255) NOT NULL DEFAULT '',
@@ -226,7 +226,7 @@ COMMENT ON TABLE app_account_deletion IS '账号注销申请与冷静期';
 -- ============================================================
 
 CREATE TABLE IF NOT EXISTS watch_progress (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   user_id     BIGINT       NOT NULL,
   drama_id    BIGINT       NOT NULL,
   episode_id  BIGINT       NOT NULL,
@@ -246,7 +246,7 @@ COMMENT ON TABLE watch_progress IS '每用户每剧一条续看进度（跨端
 
 -- 观看流水：量大，按 watched_at 做声明式月分区，便于按期归档与清理
 CREATE TABLE IF NOT EXISTS watch_history (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY,
+  id          BIGINT,
   user_id     BIGINT       NOT NULL,
   drama_id    BIGINT       NOT NULL,
   episode_id  BIGINT       NOT NULL,
@@ -263,7 +263,7 @@ CREATE INDEX IF NOT EXISTS idx_watch_history_drama ON watch_history (drama_id, w
 COMMENT ON TABLE watch_history IS '观看流水（月分区，保留 12–24 个月）';
 
 CREATE TABLE IF NOT EXISTS user_favorite (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   user_id    BIGINT       NOT NULL,
   drama_id   BIGINT       NOT NULL,
   sort       INT          NOT NULL DEFAULT 0,
@@ -280,7 +280,7 @@ COMMENT ON TABLE user_favorite IS '剧集收藏';
 -- 唯一索引是 (ticket_no, created_at)；ticket_no 是 UUID，实际唯一性不受影响。
 -- 月分区本身由 sql/partition-maintenance.sql 建（含未来 3 个月）。
 CREATE TABLE IF NOT EXISTS playback_ticket (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY,
+  id         BIGINT,
   ticket_no  VARCHAR(40)  NOT NULL,
   user_id    BIGINT       NOT NULL DEFAULT 0,                    -- 0 表示未登录的免费集
   drama_id   BIGINT       NOT NULL,
@@ -303,7 +303,7 @@ CREATE INDEX IF NOT EXISTS idx_playback_ticket_user
 COMMENT ON TABLE playback_ticket IS '播放票据签发审计；真正的鉴权在签名 URL 上（月分区）';
 
 CREATE TABLE IF NOT EXISTS download_license (
-  id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id           BIGINT PRIMARY KEY,
   user_id      BIGINT       NOT NULL,
   drama_id     BIGINT       NOT NULL,
   episode_id   BIGINT       NOT NULL,
@@ -326,7 +326,7 @@ COMMENT ON TABLE download_license IS '离线下载授权与设备绑定（换机
 -- ============================================================
 
 CREATE TABLE IF NOT EXISTS content_comment (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   drama_id      BIGINT       NOT NULL,
   episode_id    BIGINT       NOT NULL DEFAULT 0,
   user_id       BIGINT       NOT NULL,
@@ -352,7 +352,7 @@ CREATE INDEX IF NOT EXISTS idx_comment_user ON content_comment (user_id, created
 COMMENT ON TABLE content_comment IS '评论与回复（先审后发）';
 
 CREATE TABLE IF NOT EXISTS content_like (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   user_id     BIGINT      NOT NULL,
   target_type VARCHAR(16) NOT NULL,                              -- DRAMA/EPISODE/COMMENT
   target_id   BIGINT      NOT NULL,
@@ -364,7 +364,7 @@ CREATE INDEX IF NOT EXISTS idx_content_like_target ON content_like (target_type,
 COMMENT ON TABLE content_like IS '点赞关系；计数值异步聚合';
 
 CREATE TABLE IF NOT EXISTS content_report (
-  id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id           BIGINT PRIMARY KEY,
   reporter_id  BIGINT       NOT NULL,
   target_type  VARCHAR(16)  NOT NULL,                            -- COMMENT/USER/DRAMA
   target_id    BIGINT       NOT NULL,
@@ -383,7 +383,7 @@ CREATE INDEX IF NOT EXISTS idx_report_status ON content_report (status, created_
 COMMENT ON TABLE content_report IS '举报工单';
 
 CREATE TABLE IF NOT EXISTS user_blocklist (
-  id              BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id              BIGINT PRIMARY KEY,
   user_id         BIGINT      NOT NULL,
   blocked_user_id BIGINT      NOT NULL,
   source          VARCHAR(16) NOT NULL DEFAULT 'MANUAL',         -- MANUAL/COMMENT
@@ -394,7 +394,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_user_blocklist ON user_blocklist (user_id,
 COMMENT ON TABLE user_blocklist IS '拉黑关系';
 
 CREATE TABLE IF NOT EXISTS sensitive_word (
-  id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id           BIGINT PRIMARY KEY,
   word         VARCHAR(64)  NOT NULL,
   category     VARCHAR(32)  NOT NULL DEFAULT '',                 -- POLITICS/PORN/ABUSE/AD/RELIGION
   level        VARCHAR(16)  NOT NULL DEFAULT 'REVIEW',           -- BLOCK/REVIEW/REPLACE
@@ -409,7 +409,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sensitive_word ON sensitive_word (language,
 COMMENT ON TABLE sensitive_word IS '敏感词库';
 
 CREATE TABLE IF NOT EXISTS content_audit_record (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   biz_type    VARCHAR(16)  NOT NULL,                             -- COMMENT/DRAMA/AVATAR/CREATOR
   biz_id      BIGINT       NOT NULL,
   round       INT          NOT NULL DEFAULT 1,
@@ -427,7 +427,7 @@ CREATE INDEX IF NOT EXISTS idx_audit_biz ON content_audit_record (biz_type, biz_
 COMMENT ON TABLE content_audit_record IS '审核留证（机审 + 人审都记）';
 
 CREATE TABLE IF NOT EXISTS content_share (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   user_id    BIGINT       NOT NULL DEFAULT 0,
   drama_id   BIGINT       NOT NULL,
   episode_id BIGINT       NOT NULL DEFAULT 0,
@@ -442,7 +442,7 @@ COMMENT ON TABLE content_share IS '分享事件，用于渠道效果与裂变分
 -- ============================================================
 
 CREATE TABLE IF NOT EXISTS wallet (
-  id                  BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id                  BIGINT PRIMARY KEY,
   user_id             BIGINT      NOT NULL,
   coin_balance        BIGINT      NOT NULL DEFAULT 0,
   total_recharged_coin BIGINT     NOT NULL DEFAULT 0,
@@ -457,7 +457,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_wallet_user ON wallet (user_id);
 COMMENT ON TABLE wallet IS '金币钱包；所有变动必须同时写 coin_ledger';
 
 CREATE TABLE IF NOT EXISTS product (
-  id               BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id               BIGINT PRIMARY KEY,
   code             VARCHAR(64)  NOT NULL,
   name             VARCHAR(128) NOT NULL,
   type             VARCHAR(16)  NOT NULL DEFAULT 'COIN_PACK',     -- COIN_PACK/VIP/EPISODE_PACK（VIP 为第二阶段预留）
@@ -483,7 +483,7 @@ CREATE INDEX IF NOT EXISTS idx_product_platform ON product (platform, status);
 COMMENT ON TABLE product IS '商品配置（金币包；会员与活动价为后续阶段预留）';
 
 CREATE TABLE IF NOT EXISTS orders (
-  id                   BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id                   BIGINT PRIMARY KEY,
   order_no             VARCHAR(40)  NOT NULL,
   user_id              BIGINT       NOT NULL,
   product_id           BIGINT       NOT NULL DEFAULT 0,
@@ -522,7 +522,7 @@ COMMENT ON TABLE orders IS '订单；orders 为保留字规避（order 是 SQL
 
 -- 订单状态流转流水，同样按月分区（同 playback_ticket，主键带分区键）
 CREATE TABLE IF NOT EXISTS order_event (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY,
+  id          BIGINT,
   order_no    VARCHAR(40)  NOT NULL,
   event       VARCHAR(32)  NOT NULL,                             -- CREATE/VERIFY_OK/VERIFY_FAIL/DELIVER/REFUND/NOTIFY
   from_status VARCHAR(16)  NOT NULL DEFAULT '',
@@ -537,7 +537,7 @@ CREATE INDEX IF NOT EXISTS idx_order_event_no ON order_event (order_no, created_
 COMMENT ON TABLE order_event IS '订单状态流转流水，支付争议时的证据链（月分区）';
 
 CREATE TABLE IF NOT EXISTS store_receipt (
-  id                     BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id                     BIGINT PRIMARY KEY,
   platform               VARCHAR(16)  NOT NULL,
   transaction_id         VARCHAR(128) NOT NULL,
   original_transaction_id VARCHAR(128) NOT NULL DEFAULT '',
@@ -557,7 +557,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_store_receipt ON store_receipt (platform, t
 COMMENT ON TABLE store_receipt IS '商店票据去重与校验留证（重放防护）';
 
 CREATE TABLE IF NOT EXISTS coin_ledger (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   user_id       BIGINT       NOT NULL,
   change_amount BIGINT       NOT NULL,                           -- 正数入账，负数出账
   balance_after BIGINT       NOT NULL,
@@ -573,7 +573,7 @@ CREATE INDEX IF NOT EXISTS idx_coin_ledger_user ON coin_ledger (user_id, created
 COMMENT ON TABLE coin_ledger IS '金币流水，钱包余额的唯一事实来源';
 
 CREATE TABLE IF NOT EXISTS entitlement (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   user_id    BIGINT      NOT NULL,
   drama_id   BIGINT      NOT NULL DEFAULT 0,
   episode_id BIGINT      NOT NULL DEFAULT 0,                     -- 0 表示整剧权益
@@ -593,7 +593,7 @@ CREATE INDEX IF NOT EXISTS idx_entitlement_user ON entitlement (user_id, status)
 COMMENT ON TABLE entitlement IS '权益；播放判定优先读这里';
 
 CREATE TABLE IF NOT EXISTS refund_record (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   order_no    VARCHAR(40)  NOT NULL,
   platform    VARCHAR(16)  NOT NULL DEFAULT '',
   refund_id   VARCHAR(128) NOT NULL DEFAULT '',
@@ -613,7 +613,7 @@ CREATE INDEX IF NOT EXISTS idx_refund_status ON refund_record (status, created_a
 COMMENT ON TABLE refund_record IS '退款与撤销事件，触发权益回收';
 
 CREATE TABLE IF NOT EXISTS reconcile_task (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   biz_date      DATE         NOT NULL,
   platform      VARCHAR(16)  NOT NULL DEFAULT 'ALL',
   total_count   INT          NOT NULL DEFAULT 0,
@@ -635,7 +635,7 @@ COMMENT ON TABLE reconcile_task IS '每日对账任务（与商店账单比对
 -- ============================================================
 
 CREATE TABLE IF NOT EXISTS creator (
-  id             BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id             BIGINT PRIMARY KEY,
   user_id        BIGINT       NOT NULL,                          -- 关联 C 端账号
   code           VARCHAR(32)  NOT NULL,
   name           VARCHAR(128) NOT NULL,
@@ -663,7 +663,7 @@ CREATE INDEX IF NOT EXISTS idx_creator_status ON creator (status, created_at DES
 COMMENT ON TABLE creator IS '创作者主体与资质';
 
 CREATE TABLE IF NOT EXISTS creator_document (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   creator_id  BIGINT       NOT NULL,
   type        VARCHAR(32)  NOT NULL,                             -- ID_CARD/BUSINESS_LICENSE/CONTRACT
   file_url    VARCHAR(512) NOT NULL,
@@ -678,7 +678,7 @@ CREATE INDEX IF NOT EXISTS idx_creator_doc ON creator_document (creator_id, type
 COMMENT ON TABLE creator_document IS '创作者资质文件';
 
 CREATE TABLE IF NOT EXISTS content_submission (
-  id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id           BIGINT PRIMARY KEY,
   creator_id   BIGINT       NOT NULL,
   drama_id     BIGINT       NOT NULL,
   type         VARCHAR(16)  NOT NULL DEFAULT 'CREATE',           -- CREATE/UPDATE/PUBLISH/OFFLINE
@@ -698,7 +698,7 @@ CREATE INDEX IF NOT EXISTS idx_submission_status ON content_submission (status,
 COMMENT ON TABLE content_submission IS '创作者内容提交与审核流转';
 
 CREATE TABLE IF NOT EXISTS creator_stat_daily (
-  id             BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id             BIGINT PRIMARY KEY,
   creator_id     BIGINT  NOT NULL,
   drama_id       BIGINT  NOT NULL DEFAULT 0,
   stat_date      DATE    NOT NULL,
@@ -715,7 +715,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_creator_stat ON creator_stat_daily (creator
 COMMENT ON TABLE creator_stat_daily IS '创作者数据看板日汇总';
 
 CREATE TABLE IF NOT EXISTS creator_settlement (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   creator_id BIGINT       NOT NULL,
   period     VARCHAR(16)  NOT NULL,                              -- 2026-10
   revenue    BIGINT       NOT NULL DEFAULT 0,
@@ -737,7 +737,7 @@ COMMENT ON TABLE creator_settlement IS '预留：创作者结算（第二阶段
 -- ============================================================
 
 CREATE TABLE IF NOT EXISTS transcode_task (
-  id             BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id             BIGINT PRIMARY KEY,
   media_asset_id BIGINT       NOT NULL DEFAULT 0,
   drama_id       BIGINT       NOT NULL DEFAULT 0,
   episode_id     BIGINT       NOT NULL DEFAULT 0,
@@ -758,7 +758,7 @@ CREATE INDEX IF NOT EXISTS idx_transcode_episode ON transcode_task (episode_id);
 COMMENT ON TABLE transcode_task IS '转码任务队列（本地 worker / 云转码）';
 
 CREATE TABLE IF NOT EXISTS media_rendition (
-  id             BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id             BIGINT PRIMARY KEY,
   media_asset_id BIGINT       NOT NULL DEFAULT 0,
   drama_id       BIGINT       NOT NULL DEFAULT 0,
   episode_id     BIGINT       NOT NULL DEFAULT 0,
@@ -787,7 +787,7 @@ COMMENT ON TABLE media_rendition IS '多码率产物；播放票据按此生成
 -- ============================================================
 
 CREATE TABLE IF NOT EXISTS ops_notice (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   title      VARCHAR(128) NOT NULL,
   content    VARCHAR(2000) NOT NULL DEFAULT '',
   target     VARCHAR(16)  NOT NULL DEFAULT 'ALL',                -- ALL/USER/CREATOR
@@ -804,7 +804,7 @@ CREATE INDEX IF NOT EXISTS idx_notice_target ON ops_notice (target, status, publ
 COMMENT ON TABLE ops_notice IS '系统公告（创作者审核结果、活动、支付通知）';
 
 CREATE TABLE IF NOT EXISTS ops_daily_stat (
-  id                  BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id                  BIGINT PRIMARY KEY,
   stat_date           DATE        NOT NULL,
   new_user_count      BIGINT      NOT NULL DEFAULT 0,
   active_user_count   BIGINT      NOT NULL DEFAULT 0,
@@ -824,7 +824,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_ops_daily_stat ON ops_daily_stat (stat_date
 COMMENT ON TABLE ops_daily_stat IS '经营大盘日汇总（含成本口径）';
 
 CREATE TABLE IF NOT EXISTS audit_log (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   biz_type    VARCHAR(32)  NOT NULL,                             -- ORDER/ENTITLEMENT/USER/CREATOR/PRICE
   biz_id      VARCHAR(64)  NOT NULL DEFAULT '',
   action      VARCHAR(32)  NOT NULL,
@@ -878,7 +878,7 @@ ALTER TABLE app_user ADD COLUMN IF NOT EXISTS download_max_quality VARCHAR(16) N
 -- 下载任务与断点续传进度。分片由客户端直接向 CDN 拉取，服务端只记账：
 -- 用它实现"下载中/已暂停/已完成"的跨端展示、断点续传的进度恢复，以及配额统计。
 CREATE TABLE IF NOT EXISTS download_task (
-  id               BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id               BIGINT PRIMARY KEY,
   user_id          BIGINT       NOT NULL,
   device_id        VARCHAR(128) NOT NULL DEFAULT '',
   drama_id         BIGINT       NOT NULL,

sql/schema.sql

@@ -1,7 +1,7 @@
 -- FruitShorts 短剧服务 · 建表脚本（PostgreSQL 18）
 --
 -- 与 MySQL 版本的对应关系：
---   AUTO_INCREMENT        -> GENERATED BY DEFAULT AS IDENTITY
+--   AUTO_INCREMENT        -> 无（主键由应用侧雪花算法生成：MyBatis-Plus IdType.ASSIGN_ID）
 --   TINYINT               -> SMALLINT
 --   DATETIME(3)           -> TIMESTAMP(3)
 --   ON UPDATE CURRENT_TIMESTAMP -> set_updated_at() 触发器
@@ -11,7 +11,7 @@
 -- ========== 系统域 ==========
 
 CREATE TABLE IF NOT EXISTS sys_admin_user (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   username      VARCHAR(64)  NOT NULL,           -- 登录名
   password      VARCHAR(100) NOT NULL,           -- BCrypt 哈希
   real_name     VARCHAR(64)  NOT NULL DEFAULT '',
@@ -31,7 +31,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sys_admin_user_username ON sys_admin_user (
 COMMENT ON TABLE sys_admin_user IS '管理员';
 
 CREATE TABLE IF NOT EXISTS sys_role_category (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   name        VARCHAR(64)  NOT NULL,
   description VARCHAR(255) NOT NULL DEFAULT '',
   sort        INT          NOT NULL DEFAULT 0,
@@ -43,7 +43,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sys_role_category_name ON sys_role_category
 COMMENT ON TABLE sys_role_category IS '角色分类';
 
 CREATE TABLE IF NOT EXISTS sys_role (
-  id          BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id          BIGINT PRIMARY KEY,
   name        VARCHAR(64)  NOT NULL,
   code        VARCHAR(64)  NOT NULL,             -- 如 super_admin
   category_id BIGINT       NOT NULL DEFAULT 0,
@@ -59,7 +59,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sys_role_code ON sys_role (code);
 COMMENT ON TABLE sys_role IS '角色';
 
 CREATE TABLE IF NOT EXISTS sys_admin_user_role (
-  id      BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id      BIGINT PRIMARY KEY,
   user_id BIGINT NOT NULL,
   role_id BIGINT NOT NULL
 );
@@ -68,7 +68,7 @@ CREATE INDEX IF NOT EXISTS idx_sys_admin_user_role_role ON sys_admin_user_role (
 COMMENT ON TABLE sys_admin_user_role IS '管理员-角色';
 
 CREATE TABLE IF NOT EXISTS sys_permission (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   code       VARCHAR(128) NOT NULL,              -- 如 drama:create
   name       VARCHAR(64)  NOT NULL,
   group_name VARCHAR(64)  NOT NULL DEFAULT '',
@@ -79,7 +79,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sys_permission_code ON sys_permission (code
 COMMENT ON TABLE sys_permission IS '权限点';
 
 CREATE TABLE IF NOT EXISTS sys_menu (
-  id              BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id              BIGINT PRIMARY KEY,
   parent_id       BIGINT       NOT NULL DEFAULT 0,
   title           VARCHAR(64)  NOT NULL,
   route_path      VARCHAR(128) NOT NULL DEFAULT '',
@@ -101,7 +101,7 @@ CREATE INDEX IF NOT EXISTS idx_sys_menu_parent ON sys_menu (parent_id);
 COMMENT ON TABLE sys_menu IS '菜单';
 
 CREATE TABLE IF NOT EXISTS sys_role_permission (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   role_id       BIGINT NOT NULL,
   permission_id BIGINT NOT NULL
 );
@@ -109,7 +109,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sys_role_permission ON sys_role_permission
 COMMENT ON TABLE sys_role_permission IS '角色-权限';
 
 CREATE TABLE IF NOT EXISTS sys_role_menu (
-  id      BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id      BIGINT PRIMARY KEY,
   role_id BIGINT NOT NULL,
   menu_id BIGINT NOT NULL
 );
@@ -117,7 +117,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sys_role_menu ON sys_role_menu (role_id, me
 COMMENT ON TABLE sys_role_menu IS '角色-菜单';
 
 CREATE TABLE IF NOT EXISTS sys_config (
-  id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id           BIGINT PRIMARY KEY,
   config_key   VARCHAR(128)  NOT NULL,
   config_value VARCHAR(1024) NOT NULL DEFAULT '',
   remark       VARCHAR(255)  NOT NULL DEFAULT ''
@@ -126,7 +126,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_sys_config_key ON sys_config (config_key);
 COMMENT ON TABLE sys_config IS '系统配置';
 
 CREATE TABLE IF NOT EXISTS sys_operation_log (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   admin_user_id BIGINT       NOT NULL DEFAULT 0,
   username      VARCHAR(64)  NOT NULL DEFAULT '',
   module        VARCHAR(64)  NOT NULL DEFAULT '',
@@ -148,7 +148,7 @@ COMMENT ON TABLE sys_operation_log IS '操作日志';
 -- ========== 内容域 ==========
 
 CREATE TABLE IF NOT EXISTS drama_category (
-  id     BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id     BIGINT PRIMARY KEY,
   name   VARCHAR(64) NOT NULL,
   sort   INT     NOT NULL DEFAULT 0,
   status SMALLINT NOT NULL DEFAULT 1
@@ -157,7 +157,7 @@ CREATE UNIQUE INDEX IF NOT EXISTS uk_drama_category_name ON drama_category (name
 COMMENT ON TABLE drama_category IS '短剧类型';
 
 CREATE TABLE IF NOT EXISTS drama (
-  id                   BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id                   BIGINT PRIMARY KEY,
   code                 VARCHAR(64)   NOT NULL DEFAULT '',
   title                VARCHAR(128)  NOT NULL,
   subtitle             VARCHAR(128)  NOT NULL DEFAULT '',
@@ -194,7 +194,7 @@ CREATE INDEX IF NOT EXISTS idx_drama_status_category ON drama (status, category_
 COMMENT ON TABLE drama IS '短剧';
 
 CREATE TABLE IF NOT EXISTS drama_episode (
-  id             BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id             BIGINT PRIMARY KEY,
   drama_id       BIGINT       NOT NULL,
   ep_no          INT          NOT NULL,
   title          VARCHAR(128) NOT NULL DEFAULT '',
@@ -217,7 +217,7 @@ CREATE INDEX IF NOT EXISTS idx_drama_episode_status ON drama_episode (drama_id,
 COMMENT ON TABLE drama_episode IS '剧集';
 
 CREATE TABLE IF NOT EXISTS drama_review_record (
-  id            BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id            BIGINT PRIMARY KEY,
   biz_type      VARCHAR(16)  NOT NULL,           -- DRAMA/EPISODE
   biz_id        BIGINT       NOT NULL,
   action        VARCHAR(16)  NOT NULL,           -- SUBMIT/APPROVE/REJECT/PUBLISH/OFFLINE
@@ -230,7 +230,7 @@ CREATE INDEX IF NOT EXISTS idx_drama_review_biz ON drama_review_record (biz_type
 COMMENT ON TABLE drama_review_record IS '审核记录';
 
 CREATE TABLE IF NOT EXISTS content_banner (
-  id         BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id         BIGINT PRIMARY KEY,
   image_url  VARCHAR(512) NOT NULL DEFAULT '',
   slot       VARCHAR(32)  NOT NULL DEFAULT 'HOME_TOP',  -- 展示位置：HOME_TOP/DISCOVER
   link_type  VARCHAR(16)  NOT NULL DEFAULT 'NONE',      -- NONE/DRAMA/URL
@@ -249,7 +249,7 @@ COMMENT ON TABLE content_banner IS '轮播图';
 -- 本地存储版本：文件落在 fruitshorts.media.root-dir 下，通过 /files/** 访问
 
 CREATE TABLE IF NOT EXISTS media_asset (
-  id           BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id           BIGINT PRIMARY KEY,
   biz_type     VARCHAR(32)  NOT NULL DEFAULT 'EPISODE',
   file_name    VARCHAR(255) NOT NULL DEFAULT '',
   object_key   VARCHAR(512) NOT NULL DEFAULT '',
@@ -274,7 +274,7 @@ CREATE INDEX IF NOT EXISTS idx_media_asset_biz_type ON media_asset (biz_type);
 COMMENT ON TABLE media_asset IS '媒资';
 
 CREATE TABLE IF NOT EXISTS media_upload_task (
-  id              BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
+  id              BIGINT PRIMARY KEY,
   upload_id       VARCHAR(64)  NOT NULL,
   biz_type        VARCHAR(32)  NOT NULL DEFAULT 'EPISODE',
   file_name       VARCHAR(255) NOT NULL DEFAULT '',