feat(account): 数据保留流程落地（36 个月下限，V049）—— closed_at + 人工审核/幂等匿名化/审计 + 运营端点 + 守卫 5 用例；测试库补 user_photos，MyBatis null 更新修复

backend/src/test/resources/schema-h2.sql

@@ -4,9 +4,26 @@ CREATE TABLE users (
   id VARCHAR(36) PRIMARY KEY, wechat_openid VARCHAR(128) NOT NULL UNIQUE,
   wechat_unionid VARCHAR(128), phone VARCHAR(32), account_status VARCHAR(32),
   relationship_status VARCHAR(32), recommendation_enabled BOOLEAN,
-  last_login_at TIMESTAMP WITH TIME ZONE, created_at TIMESTAMP WITH TIME ZONE,
+  last_login_at TIMESTAMP WITH TIME ZONE, closed_at TIMESTAMP WITH TIME ZONE,
+  created_at TIMESTAMP WITH TIME ZONE,
   updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
 );
+-- 数据保留守卫（DataRetentionGuardTest）：user_photos 表此前完全缺失于测试库
+-- （且留在 EntityMigrationParityTest 的可选白名单里 = 零覆盖），
+-- 照片软删路径在测试环境直接 BadSqlGrammar。按 V002 生产定义补齐（UUID→VARCHAR(36) 约定）。
+CREATE TABLE user_photos (
+  id VARCHAR(36) PRIMARY KEY,
+  user_id VARCHAR(36) NOT NULL,
+  file_key VARCHAR(512) NOT NULL,
+  photo_type VARCHAR(32) NOT NULL DEFAULT 'lifestyle',
+  sort_order SMALLINT NOT NULL DEFAULT 0,
+  review_status VARCHAR(32) NOT NULL DEFAULT 'pending',
+  review_reason VARCHAR(256),
+  created_at TIMESTAMP WITH TIME ZONE,
+  updated_at TIMESTAMP WITH TIME ZONE,
+  deleted_at TIMESTAMP WITH TIME ZONE
+);
+
 CREATE TABLE user_relations (
   id VARCHAR(36) PRIMARY KEY, user_id VARCHAR(36), target_user_id VARCHAR(36), relation_type VARCHAR(32),
   created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE,