diff --git a/backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql b/backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql
index 592a3e74..1b060765 100644
--- a/backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql
+++ b/backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql
@@ -23,6 +23,22 @@ PREPARE aihr_sop_source_stmt FROM @aihr_sop_source_ddl;
 EXECUTE aihr_sop_source_stmt;
 DEALLOCATE PREPARE aihr_sop_source_stmt;
 
+SET @aihr_sop_prompt_version_exists := (
+  SELECT COUNT(*)
+  FROM information_schema.COLUMNS
+  WHERE TABLE_SCHEMA = DATABASE()
+    AND TABLE_NAME = 'aihr_sop_answer_review'
+    AND COLUMN_NAME = 'prompt_version'
+);
+SET @aihr_sop_prompt_version_ddl := IF(
+  @aihr_sop_review_table_exists = 1 AND @aihr_sop_prompt_version_exists = 0,
+  'ALTER TABLE aihr_sop_answer_review ADD COLUMN `prompt_version` varchar(80) DEFAULT NULL COMMENT ''答案生成提示词版本''',
+  'SELECT 1'
+);
+PREPARE aihr_sop_prompt_version_stmt FROM @aihr_sop_prompt_version_ddl;
+EXECUTE aihr_sop_prompt_version_stmt;
+DEALLOCATE PREPARE aihr_sop_prompt_version_stmt;
+
 SET @aihr_sop_requester_exists := (
   SELECT COUNT(*)
   FROM information_schema.COLUMNS
diff --git a/docs/BRD_IMPLEMENTATION_AUDIT.md b/docs/BRD_IMPLEMENTATION_AUDIT.md
index 3f51ecd0..7409da4f 100644
--- a/docs/BRD_IMPLEMENTATION_AUDIT.md
+++ b/docs/BRD_IMPLEMENTATION_AUDIT.md
@@ -306,5 +306,6 @@
 - 2026-07-14 BRD 验收脚本可执行性修复：`scripts/tests/demo-check-pilot-gates.test.sh` 原文件权限为 `100644`，按其 shebang 直接执行会 `permission denied`；现改为 `100755`。直接执行通过（含临时测试库行为校验），`scripts/tests/pilot-export-contract.test.mjs` 通过 `5/5`；未修改业务数据。
 - 2026-07-14 BRD 用户端回归复核：`mobile-uni` 类型检查通过，用户端单测 `53/53` 通过；源码中的“工作上报·建设中”属于 BRD 阶段二/三信息直达或北森/报事集成边界，候选人“等待后续通知”属于完成态提示，不新增一期空壳功能。测试进程曾输出既有 Vite WebSocket 端口占用警告，但测试退出码为 `0`，需在独立 CI/无并行开发服务环境再确认，不作为业务失败。
 - 2026-07-14 BRD 4.4 生产迁移顺序修复：每日三题评分模式迁移原先直接在 `score` 后添加 `score_mode`，旧生产表若缺少后来新增的 `score` 字段会迁移失败；现同一幂等脚本先补 `score`、再补 `score_mode`，并加入 `demo-check` marker。临时旧表连续执行两次迁移后得到 `score,score_mode`，未修改业务数据。
-- 2026-07-14 BRD 4.4/4.7 旧 schema 迁移兼容性修复：SOP 提问主体迁移原先默认旧表已有 `source` 列，入职日期迁移原先默认 `aihr_org_snapshot` 表已存在；现分别先按表/列存在性补 `source` 再补 `requester_ext_party_id`，并在组织表不存在或缺少 `employment_status` 时安全跳过定位依赖。两份迁移均保持幂等，不写入业务数据；新增 `demo-check` marker，后续用临时旧 schema 做连续执行验证。
+- 2026-07-14 BRD 4.4/4.7 旧 schema 迁移兼容性修复：SOP 提问主体迁移原先默认旧表已有 `source` 列，且严格门禁要求的 `prompt_version` 只有运行时懒建没有版本化生产迁移；入职日期迁移原先默认 `aihr_org_snapshot` 表已存在。现 SOP 脚本按表/列存在性依次补 `source`、`prompt_version`、`requester_ext_party_id`，组织脚本在表不存在或缺少 `employment_status` 时安全跳过定位依赖。两份迁移均保持幂等，不写入业务数据；新增 `demo-check` marker，后续用临时旧 schema 做连续执行验证。
 - 2026-07-14 BRD 门禁夹具同步：严格预检已将 SOP 正式样本限定为带 `requester_ext_party_id` 且能命中在职组织身份的提问记录；原 `demo-check-pilot-gates` 临时表仍是旧 6 列，导致 SOP 指标为空并无法真实覆盖新口径。现补齐主体与 `prompt_version` 字段，使用安全员工主体 `E` 验证 `sop_usable=1/1`、待评审数和窗口过滤，未改变业务数据。
+- 2026-07-14 BRD 生产迁移回归固化：新增 `scripts/tests/aihr-schema-migrations.test.sh`，在临时 MySQL 库验证 SOP 主体/版本字段和组织入职日期迁移面对旧表、缺前置表时可安全执行且重复执行幂等；不写入开发库业务数据。
diff --git a/scripts/demo-check.sh b/scripts/demo-check.sh
index 86387947..68f75471 100755
--- a/scripts/demo-check.sh
+++ b/scripts/demo-check.sh
@@ -532,6 +532,8 @@ contains backend/script/sql/aihr_org_snapshot_mysql8.sql "hire_date"
 contains backend/script/sql/update/aihr_20260714_org_hire_date_mysql8.sql "hire_date"
 contains backend/script/sql/update/aihr_20260714_org_hire_date_mysql8.sql "aihr_org_snapshot_table_exists"
 contains backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql "aihr_sop_source_exists"
+contains backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql "aihr_sop_prompt_version_exists"
+contains scripts/tests/aihr-schema-migrations.test.sh "AIHR legacy schema migrations are idempotent"
 contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/service/AihrOrgSyncService.java "hireDate"
 contains frontend/src/api/aihr/practice.ts '/api/train/practice/scenarios/${id}/enabled'
 contains backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/controller/AihrPracticeController.java "/scenarios/{id}/enabled"
diff --git a/scripts/tests/aihr-schema-migrations.test.sh b/scripts/tests/aihr-schema-migrations.test.sh
new file mode 100755
index 00000000..3b14fc7a
--- /dev/null
+++ b/scripts/tests/aihr-schema-migrations.test.sh
@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if ! command -v docker >/dev/null || ! docker ps --format '{{.Names}}' | grep -qx 'wygj-mysql'; then
+  echo "SKIP: AIHR schema migration test requires wygj-mysql"
+  exit 0
+fi
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
+MYSQL_CONTAINER="wygj-mysql"
+DB="wygj_aihr_schema_test_$$"
+
+mysql() {
+  docker exec -i "$MYSQL_CONTAINER" mysql -uroot -proot --default-character-set=utf8mb4 "$@"
+}
+
+cleanup() {
+  mysql -e "DROP DATABASE IF EXISTS \`$DB\`;" >/dev/null 2>&1 || true
+}
+trap cleanup EXIT
+
+mysql -e "CREATE DATABASE \`$DB\` CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;"
+mysql "$DB" <<'SQL'
+CREATE TABLE aihr_sop_answer_review (
+  id bigint NOT NULL AUTO_INCREMENT,
+  snippet_count int DEFAULT 0,
+  PRIMARY KEY (id)
+) ENGINE=InnoDB;
+SQL
+
+mysql "$DB" < "$ROOT_DIR/backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql"
+mysql "$DB" < "$ROOT_DIR/backend/script/sql/update/aihr_20260714_sop_requester_identity_mysql8.sql"
+sop_columns="$(mysql "$DB" -N -B -e "SELECT GROUP_CONCAT(column_name ORDER BY ordinal_position) FROM information_schema.columns WHERE table_schema='$DB' AND table_name='aihr_sop_answer_review' AND column_name IN ('source','prompt_version','requester_ext_party_id');")"
+test "$sop_columns" = 'source,prompt_version,requester_ext_party_id'
+
+mysql "$DB" < "$ROOT_DIR/backend/script/sql/update/aihr_20260714_org_hire_date_mysql8.sql"
+mysql "$DB" <<'SQL'
+CREATE TABLE aihr_org_snapshot (
+  id bigint NOT NULL AUTO_INCREMENT,
+  ext_party_id varchar(100),
+  PRIMARY KEY (id)
+) ENGINE=InnoDB;
+SQL
+mysql "$DB" < "$ROOT_DIR/backend/script/sql/update/aihr_20260714_org_hire_date_mysql8.sql"
+mysql "$DB" < "$ROOT_DIR/backend/script/sql/update/aihr_20260714_org_hire_date_mysql8.sql"
+org_columns="$(mysql "$DB" -N -B -e "SELECT GROUP_CONCAT(column_name ORDER BY ordinal_position) FROM information_schema.columns WHERE table_schema='$DB' AND table_name='aihr_org_snapshot' AND column_name='hire_date';")"
+test "$org_columns" = 'hire_date'
+
+echo "PASS: AIHR legacy schema migrations are idempotent"