fix(relationship): Phase 12 复验 —— 修复实体↔生产迁移系统性漂移（生产故障族）/ 双路径 episode 与 NPE / 测试库缺表致首页零覆盖 / 计划项 2 未实现

KEEP-VERIFY 复验发现并修复 4 处真实缺陷：
- D1（Critical，生产故障·同一族系统性缺陷）实体与 db/migration 系统性漂移：23 表 50 列在生产
  迁移中不存在，而测试库 schema-h2.sql 手写补齐 → 全量绿=假绿。其中 11 表属"INSERT 必崩"级
  （缺 id/created_at/updated_at，被 AutoFillHandler 强制填充），含 matches.episode、user_preferences
  权重列、permissions/roles、consent_records、risk_events 等；真实 PG 上 Match 创建、择偶偏好保存、
  权限/角色写入、同意记录、风险事件全部失败。修复：新增 V037（幂等 ADD COLUMN IF NOT EXISTS
  + 存量 episode 回填）。
- D2（High）RelationshipService.createMatch 不写 episode/lastActivityAt，与 MatchService 双路径
  填充不一致；且 episode 为 null 时 m.getEpisode()+1 对 Integer 自动拆箱抛 NPE。修复：统一按
  AGENTS.md #20 推导 + null 兜底。
- D3（High）测试库缺 user_identities 等 7 表 → GET /api/v1/home 在测试环境 BadSqlGrammar，
  首页接口零回归覆盖。修复：schema-h2.sql 补齐 7 表。
- D4（Medium）Phase 12 计划项 2 实际未实现：getting_to_know 分支只产出 counseling。修复：
  HomeApplicationService 补 premarital 引导（与 counseling 并列）。

测试保真度：
- 新增永久守卫 EntityMigrationParityTest（5 用例）：把"实体字段 ⊆ 生产迁移累积列"与"测试库覆盖
  关键业务表"固化为自动不变量，区分"必崩级/潜伏级"；经两轮负向验证证明会变红（第一轮分级过窄
  已修正：episode 由"潜伏级"纠正为"必崩级"）。
- 新增 RelationshipProgressPhase12Test（14 用例，含 8 线程并发确认）与
  HomePremaritalGuidancePhase12Test（5 用例）。
- 删除 2 个假测试类中的 assertTrue(true) 占位（AGENTS.md 明令禁止），改走真实服务方法验证。

Gate：单方确认不改变最终关系 ✅ / 双确认后才 successful ✅ / 历史 Episode 可追踪 ✅ /
新 Episode 不恢复旧聊天权限（conversations.match_id UNIQUE）✅ / 非成员不可代确认 ✅

全量回归：371 tests / 0 failures / 0 errors / 3 skipped / BUILD SUCCESS（71 类，5m07s）

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

@@ -127,3 +127,76 @@ CREATE TABLE user_local_eligibilities (
   verified_at TIMESTAMP WITH TIME ZONE, verified_by VARCHAR(36), created_at TIMESTAMP WITH TIME ZONE,
   updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
 );
+
+-- ============================================================================
+-- 以下表为 Phase 12 复验补齐（测试保真度盲区）：
+-- 生产迁移里存在、而测试库此前**完全没有**，导致相关端到端路径无法测试。
+-- 例：GET /api/v1/home 的 getHome() 会调用 UserIdentityMapper.findByUserId，
+--     测试库缺 user_identities → BadSqlGrammar("Table USER_IDENTITIES not found")
+--     整个首页接口在测试环境下不可用，任何首页回归都无法验证。
+-- 列定义对齐对应迁移，仅保留实体实际读写的列。
+-- ============================================================================
+
+-- V002: user_identities 实名认证表
+CREATE TABLE user_identities (
+  id VARCHAR(36) PRIMARY KEY, user_id VARCHAR(36), real_name_enc CLOB, id_number_enc CLOB,
+  id_number_hash VARCHAR(128), gender VARCHAR(16), birth_date DATE,
+  verification_status VARCHAR(32), provider VARCHAR(64), provider_request_id VARCHAR(128),
+  verified_at TIMESTAMP WITH TIME ZONE, failed_reason_code VARCHAR(64),
+  created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- V003: review_tasks 审核任务（首页 buildUserState 需查询审核状态）
+CREATE TABLE review_tasks (
+  id VARCHAR(36) PRIMARY KEY, user_id VARCHAR(36), review_type VARCHAR(32), status VARCHAR(32),
+  assigned_operator_id VARCHAR(36), submitted_at TIMESTAMP WITH TIME ZONE,
+  started_at TIMESTAMP WITH TIME ZONE, completed_at TIMESTAMP WITH TIME ZONE,
+  final_comment VARCHAR(1000), version INT,
+  created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- V017: local_eligibility_evidences 本地资格佐证材料
+CREATE TABLE local_eligibility_evidences (
+  id VARCHAR(36) PRIMARY KEY, local_eligibility_id VARCHAR(36), file_key VARCHAR(256),
+  file_id VARCHAR(36), evidence_type VARCHAR(64), status VARCHAR(32),
+  created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- V019: home_banners 首页 Banner
+CREATE TABLE home_banners (
+  id VARCHAR(36) PRIMARY KEY, title VARCHAR(200), subtitle VARCHAR(300), image_file_id VARCHAR(36),
+  button_text VARCHAR(64), target_type VARCHAR(64), target_value VARCHAR(200),
+  audience_scope VARCHAR(64), sort_order INT, start_at TIMESTAMP WITH TIME ZONE,
+  end_at TIMESTAMP WITH TIME ZONE, status VARCHAR(32), created_by VARCHAR(36), updated_by VARCHAR(36),
+  created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- V019: service_locations 善缘服务站
+CREATE TABLE service_locations (
+  id VARCHAR(36) PRIMARY KEY, name VARCHAR(128), short_name VARCHAR(64), address CLOB,
+  latitude DECIMAL(10, 7), longitude DECIMAL(10, 7), contact_phone_enc CLOB,
+  contact_phone_display VARCHAR(32), opening_hours_text CLOB, service_description CLOB,
+  cover_file_id VARCHAR(36), primary_organization_id VARCHAR(36), notice_text CLOB,
+  status VARCHAR(32), created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE,
+  deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- V026: content_articles 婚恋课堂文章
+CREATE TABLE content_articles (
+  id VARCHAR(36) PRIMARY KEY, category_id VARCHAR(36), title VARCHAR(200), summary VARCHAR(500),
+  content CLOB, cover_file_id VARCHAR(36), author_operator_id VARCHAR(36), status VARCHAR(32),
+  publish_at TIMESTAMP WITH TIME ZONE, view_count INT, sort_order INT,
+  created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
+);
+
+-- V010: activities 公益活动（首页近期活动预览）
+CREATE TABLE activities (
+  id VARCHAR(36) PRIMARY KEY, title VARCHAR(200), cover_file_id VARCHAR(36), description CLOB,
+  organizer_org_id VARCHAR(36), coorganizer_text VARCHAR(500), start_at TIMESTAMP WITH TIME ZONE,
+  end_at TIMESTAMP WITH TIME ZONE, location_name VARCHAR(200), location_address VARCHAR(500),
+  male_limit INT, female_limit INT, total_limit INT, min_age SMALLINT, max_age SMALLINT,
+  registration_start_at TIMESTAMP WITH TIME ZONE, registration_end_at TIMESTAMP WITH TIME ZONE,
+  need_review BOOLEAN, status VARCHAR(32), created_by VARCHAR(36),
+  created_at TIMESTAMP WITH TIME ZONE, updated_at TIMESTAMP WITH TIME ZONE, deleted_at TIMESTAMP WITH TIME ZONE
+);
+