feat(migration): V8 业务答复口径落实——审批开关默认开启、撤试用期统一参数、经理基数开关、台账分摊唯一键

- #5/#7 答复默认开启：两审批开关 default 翻 1，插 10-19 生效行保时点历史
- #16 答复逐人维护：撤 probation.salary.basic（无业务消费点，月结已读 personnel.salary_standard）
- #12 答复参数化：新增 manager.personal.included（默认 0=不计入聚合基数）
- #1 答复分配绩效铺路：台账 uk 扩为 (receipt_id, calc_version, personnel_id) 支持分摊拆行
- schema_sync 解析器过滤 ADD CONSTRAINT 误捕获

Co-Authored-By: Claude Code <noreply@anthropic.com>

backend/tests/unit/test_param_registry.py

@@ -18,7 +18,8 @@ from app.services.param_registry import (
     validate_and_normalize,
 )
 
-# 与 db/migration 迁移种子保持一致的 19 项编码（V3 十六项 + V6 审批开关两项 + V7 调整单开关）
+# 与 db/migration 迁移种子保持一致的 19 项编码（V3 十六项 + V6 审批开关两项
+# + V7 调整单开关；V8 撤试用期统一工资参数 #16、增经理个人户基数开关 #12）
 EXPECTED_CODES = {
     "salesperson.rate.start",
     "salesperson.rate.slope",
@@ -35,10 +36,10 @@ EXPECTED_CODES = {
     "product.threshold",
     "salary.basic.mode",
     "probation.annual.threshold",
-    "probation.salary.basic",
     "approval.secondary_allocation.enabled",
     "approval.monthly_settlement.enabled",
     "approval.adjustment.enabled",
+    "manager.personal.included",
 }