feat(approval): 审批单内容快照与二次分配方案版本化

补齐 code-review 遗留 2 项：审批单此前只固化 ref_id/refer_no 指针，复核者看到
的是业务当前内容；二次分配方案在编辑替换与驳回清空时一律物理删除，方案事实
无处回溯。

- 审批单加 version_no 与 snapshot_json（信封 schema_version/order_type/
  captured_at/data）；二次分配、月结、调整单三类提交均固化送审内容，开关关闭
  的自动通过路径同样写快照；详情按 snapshot/live/missing 三态回显，历史单
  只读回退当前内容并显式告警，不回填历史快照
- 二次分配方案行改 append-only 版本化（version_no/is_active，唯一键扩为
  business+version+personnel）：编辑替换与驳回清空只置历史，核算与详情默认
  只取生效行，业务详情新增 allocation_history
- 送审内容未变不重提、方案未变不新增版本：判据统一为送审内容，两个
  version_no 语义解耦（方案版本=内容第几版，审批单版本=第几次送审）
- 审批单列表、工作台待办、审批超时预警三处 defer 快照列，避免整列拉取
- 月结提交取行加 for_update，防并发提交算出重复的审批单版本号
- 修复审批类型筛选上界 le=2（调整单无法筛选）、快照金额把空值写成 0.00
- V11 迁移三件套同步（Alembic / db/migration / init-dev.sql）

测试：单元 +16（方案内容比较 10、审批入参 6）、集成 +12；全量 891 passed。

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

backend/app/services/approval_service.py

@@ -20,10 +20,11 @@
 
 import logging
 from collections.abc import Iterable
-from datetime import date
+from datetime import date, datetime
+from decimal import Decimal
 
 from sqlalchemy import func, select
-from sqlalchemy.orm import Session
+from sqlalchemy.orm import Session, defer
 
 from app.core.constants import (
     ACTION_APPROVE,
@@ -36,7 +37,7 @@ from app.core.constants import (
 )
 from app.core.exceptions import BadRequestError, ForbiddenError, NotFoundError
 from app.core.response import PageResult
-from app.models import ApprovalOrder, ApprovalStep, User
+from app.models import ApprovalOrder, ApprovalStep, Business, User
 from app.models.approval import (
     APPROVAL_ACTION_APPROVE,
     APPROVAL_ACTION_AUTO_APPROVE,
@@ -113,6 +114,7 @@ def submit_order(
     ref_id: int,
     refer_no: str,
     submitter: User,
+    snapshot: dict | None = None,
 ) -> ApprovalOrder:
     """提单（业务写路径内部调用；不 commit、不嵌套 audit）。
 
@@ -122,6 +124,10 @@ def submit_order(
     一并重做），update 路径由审计上下文回滚并经全局 handler 收敛 400——
     **任何情况下都不允许本函数内部 rollback 后部分重试**，那会把同事务
     的业务主行/明细/方案回滚掉而审批单单表重插，静默丢业务数据。
+
+    ``snapshot`` 是「提交时」的业务内容（由调用方组装，Decimal 已转 str）；
+    落库时包一层信封并固化采集时间——审批期间业务再改，复核者看到的仍是
+    送审内容。开关关闭的自动通过路径同样写快照，留痕不走样。
     """
     _withdraw_pending(session, order_type=order_type, ref_id=ref_id, operator=submitter)
 
@@ -135,6 +141,17 @@ def submit_order(
         order_type=order_type,
         ref_id=ref_id,
         refer_no=refer_no,
+        version_no=_next_version(session, order_type, ref_id),
+        snapshot_json=(
+            {
+                "schema_version": 1,
+                "order_type": order_type,
+                "captured_at": datetime.now().isoformat(timespec="seconds"),
+                "data": snapshot,
+            }
+            if snapshot is not None
+            else None
+        ),
         submitter_id=submitter.id,
         submitter_name=submitter.username,
     )
@@ -165,6 +182,35 @@ def submit_order(
     return order
 
 
+def pending_matches_snapshot(
+    session: Session, *, order_type: int, ref_id: int, snapshot: dict | None
+) -> bool:
+    """在途审批单的送审内容是否与给定快照一致（用于「内容未变不重提」）。
+
+    只比较快照信封里的 ``data`` 部分——``captured_at`` 每次采集都不同，
+    参与比较会让判断恒为不一致。V11 之前的历史单没有快照，一律视为不一致
+    （保守重提：宁可多提一次，不能漏审）。
+    """
+    if snapshot is None:
+        return False
+    pending = (
+        session.execute(
+            select(ApprovalOrder).where(
+                ApprovalOrder.order_type == order_type,
+                ApprovalOrder.ref_id == ref_id,
+                ApprovalOrder.status.in_(_PENDING_STATUSES),
+            )
+        )
+        .scalars()
+        .all()
+    )
+    for order in pending:
+        stored = order.snapshot_json or {}
+        if stored.get("data") == snapshot:
+            return True
+    return False
+
+
 def withdraw_pending_orders(
     session: Session, *, order_type: int, ref_id: int, operator: User
 ) -> int:
@@ -258,7 +304,7 @@ def act(
         if rejected and order.order_type == 1:
             from app.repositories import business_repository
 
-            business_repository.delete_allocations(session, order.ref_id)
+            business_repository.deactivate_allocations(session, order.ref_id)
 
         # 审批结果联动（服务层回调，不 commit）：月结 通过=锁定/驳回=回草稿；
         # 调整单 通过=生效/驳回=作废。函数内延迟导入防循环依赖。
@@ -299,11 +345,18 @@ def act(
 
 
 def list_orders(session: Session, query: ApprovalQuery) -> PageResult[ApprovalOrderOut]:
-    """分页查询审批单（准入由 api 层依赖判定）。"""
+    """分页查询审批单（准入由 api 层依赖判定）。
+
+    排除 snapshot_json 列（月结快照含按人明细，可达数十~上百 KB）：列表出参
+    本就不含快照，整列加载会让翻页负担随快照体积线性放大；详情走
+    `get_order` 按需读取（与操作日志列表排除 request_data 同一理由，
+    见 operation_log_repository.list_logs）。
+    """
     filters = _order_filters(query)
     rows = (
         session.execute(
             select(ApprovalOrder)
+            .options(defer(ApprovalOrder.snapshot_json))
             .where(*filters)
             .order_by(ApprovalOrder.id.desc())
             .offset(query.offset)
@@ -360,8 +413,136 @@ def _withdraw_pending(session: Session, *, order_type: int, ref_id: int, operato
         logger.info("撤回在途审批单 %s 张 | ref=%s", len(pending), ref_id)
 
 
+def _next_version(session: Session, order_type: int, ref_id: int) -> int:
+    """同一对象类型+引用对象的下一个提交版本号（从 1 递增）。"""
+    return (
+        int(
+            session.execute(
+                select(func.coalesce(func.max(ApprovalOrder.version_no), 0)).where(
+                    ApprovalOrder.order_type == order_type,
+                    ApprovalOrder.ref_id == ref_id,
+                )
+            ).scalar_one()
+        )
+        + 1
+    )
+
+
+def allocation_content(session: Session, business: Business) -> dict:
+    """二次分配方案的审批内容（提单快照与历史单回退共用同一结构）。
+
+    业务主行已存在但客户联查落空（客户被删等异常）时返回空字典——调用方
+    以 ``or None`` 归一，避免生成「有快照但内容为空」的信封。
+    """
+    from app.repositories import business_repository
+
+    row = business_repository.get_with_names(session, business.id)
+    if row is None:
+        return {}
+    _, customer_name, owner_name, assistant_name = row
+    allocations = business_repository.list_allocations(session, business.id)
+    total = sum((a.ratio for a in allocations), Decimal("0"))
+    return {
+        "business_no": business.business_no,
+        "business_date": business.business_date.isoformat() if business.business_date else None,
+        "customer_name": customer_name,
+        "owner_personnel_name": owner_name,
+        "assistant_personnel_name": assistant_name,
+        "sale_amount": _amount_text(business.total_sale_amount),
+        "cost_amount": _amount_text(business.total_cost_amount),
+        "allocations": [
+            {
+                "personnel_id": a.personnel_id,
+                "personnel_name": a.personnel_name,
+                "ratio": str(a.ratio),
+            }
+            for a in allocations
+        ],
+        "allocation_total": str(total.quantize(Decimal("0.01"))),
+        "allocation_balance": str((Decimal("100") - total).quantize(Decimal("0.01"))),
+    }
+
+
+def _amount_text(value: Decimal | None) -> str | None:
+    """金额文本化（Decimal 全程不转 float；None 保留为空，不伪造 0.00）。"""
+    return str(value) if value is not None else None
+
+
+def settlement_content(session: Session, settlement_id: int) -> dict | None:
+    """月结审批内容（汇总 + 按人明细；提单快照与历史单回退共用）。"""
+    from app.models import MonthlySettlement
+    from app.repositories import settlement_repository
+
+    settlement = session.get(MonthlySettlement, settlement_id)
+    if settlement is None:
+        return None
+    items = settlement_repository.list_items(session, settlement_id)
+    return {
+        "settlement_month": settlement.settlement_month,
+        "total_performance": _amount_text(settlement.total_performance),
+        "total_payable": _amount_text(settlement.total_payable),
+        "person_count": settlement.person_count,
+        "items": [
+            {
+                "personnel_name": item.personnel_name,
+                "role_code": item.role_code,
+                "calc_type": item.calc_type,
+                "performance_sum": str(item.performance_sum),
+                "payable_sum": str(item.payable_sum),
+                "basic_amount": _amount_text(item.basic_amount),
+                "salary_mode": item.salary_mode,
+                "net_amount": _amount_text(item.net_amount),
+                "is_probation": item.is_probation,
+            }
+            for item in items
+        ],
+    }
+
+
+def adjustment_content(session: Session, adjustment_id: int) -> dict | None:
+    """调整单审批内容（提单快照与历史单回退共用）。"""
+    from app.models import AdjustmentOrder
+
+    adjustment = session.get(AdjustmentOrder, adjustment_id)
+    if adjustment is None:
+        return None
+    return {
+        "order_no": adjustment.order_no,
+        "settlement_month": adjustment.settlement_month,
+        "personnel_name": adjustment.personnel_name,
+        "direction": adjustment.direction,
+        "amount": str(adjustment.amount),
+        "reason": adjustment.reason,
+    }
+
+
+def _content_of(session: Session, order: ApprovalOrder) -> tuple[dict | None, str]:
+    """审批内容出参：优先提交时快照，历史单回退当前内容并显式标注来源。"""
+    if order.snapshot_json:
+        return order.snapshot_json, "snapshot"
+
+    if order.order_type == 1:
+        business = session.get(Business, order.ref_id)
+        data = allocation_content(session, business) if business is not None else None
+    elif order.order_type == 2:
+        data = settlement_content(session, order.ref_id)
+    elif order.order_type == 3:
+        data = adjustment_content(session, order.ref_id)
+    else:
+        data = None
+
+    if not data:
+        return None, "missing"
+    return {
+        "schema_version": 1,
+        "order_type": order.order_type,
+        "captured_at": None,
+        "data": data,
+    }, "live"
+
+
 def _detail_of(session: Session, order: ApprovalOrder) -> ApprovalOrderDetailOut:
-    """出参组装（含 steps 时间线）。调用方须保证处于 commit 之前。"""
+    """出参组装（含 steps 时间线与审批内容）。调用方须保证处于 commit 之前。"""
     steps = (
         session.execute(
             select(ApprovalStep).where(ApprovalStep.order_id == order.id).order_by(ApprovalStep.id)
@@ -371,6 +552,7 @@ def _detail_of(session: Session, order: ApprovalOrder) -> ApprovalOrderDetailOut
     )
     detail = ApprovalOrderDetailOut.model_validate(order)
     detail.steps = [ApprovalStepOut.model_validate(s) for s in steps]
+    detail.snapshot, detail.content_source = _content_of(session, order)
     return detail
 
 

backend/app/services/business_service.py

@@ -54,6 +54,7 @@ from app.models.business import (
 from app.models.customer import OWNER_TYPE_BUSINESS
 from app.repositories import business_repository, customer_repository, personnel_repository
 from app.schemas.business import (
+    AllocationVersionOut,
     BusinessCreateIn,
     BusinessDetailOut,
     BusinessItemIn,
@@ -281,6 +282,17 @@ def get_detail(session: Session, business_id: int) -> BusinessDetailOut:
         for a in allocations
     ]
     out.allocation_hint = _allocation_hint(allocations)
+    out.allocation_history = [
+        AllocationVersionOut(
+            personnel_id=a.personnel_id,
+            personnel_name=a.personnel_name,
+            ratio=str(a.ratio),
+            version_no=a.version_no,
+            is_active=a.is_active,
+            create_time=a.create_time,
+        )
+        for a in business_repository.list_allocation_versions(session, business_id)
+    ]
     return out
 
 
@@ -335,6 +347,21 @@ def _build_allocation_rows(
     return rows
 
 
+def _plan_changed(
+    old_rows: list[SecondaryAllocation], new_rows: list[SecondaryAllocation]
+) -> bool:
+    """方案内容（参与人 + 比例）是否真的变了。
+
+    比较口径是**集合**（人员 ID 与其比例的组合），与提交顺序无关——送审
+    快照同样按库内生效行的顺序生成，若按顺序比较，用户只是把行拖了个
+    序就会被判成「变了」，进而无谓地新增版本与重提审批单。
+    """
+    def _key(row: SecondaryAllocation) -> tuple[int, Decimal]:
+        return (row.personnel_id, Decimal(row.ratio).quantize(Decimal("0.01")))
+
+    return {_key(r) for r in old_rows} != {_key(r) for r in new_rows}
+
+
 def _allocation_hint(allocations: list[SecondaryAllocation]) -> str | None:
     """方案合计/余额提示（不要求合计满额是需求原文；余额归属 = 澄清 #2 答复）。
 
@@ -433,6 +460,7 @@ def create_business(
                         ref_id=business.id,
                         refer_no=business.business_no,
                         submitter=operator,
+                        snapshot=approval_service.allocation_content(session, business) or None,
                     )
                 customer = customer_repository.get_by_id(session, business.customer_id)
                 out = _to_out((business, customer.company_name if customer else None, None, None))
@@ -507,28 +535,43 @@ def update_business(
         business_repository.replace_items(
             session, business_id, _build_item_rows(business_id, payload.items)
         )
-        # 方案全量替换（空数组=清空）；终态门槛已挡「修改影响已结算月份」的
-        # 前置场景（月结在 ④，快照固化后按同一哲学隔离）
-        old_ids = {
-            a.personnel_id for a in business_repository.list_allocations(session, business_id)
-        }
-        business_repository.replace_allocations(
+        # 方案：内容真的变了才动版本行（内容未变不新增版本，避免「只改备注」
+        # 也堆出一个方案版本）；空数组=清空=把生效行置历史
+        old_allocations = business_repository.list_allocations(session, business_id)
+        new_rows = _build_allocation_rows(
             session,
             business_id,
-            _build_allocation_rows(
-                session, business_id, payload.secondary_allocations, old_ids=old_ids
-            ),
+            payload.secondary_allocations,
+            old_ids={a.personnel_id for a in old_allocations},
         )
-        # 提单/撤单与方案同步生命周期：非空=提单（内含撤旧建新）；空=仅撤回
-        # 在途单 —— 否则旧在途单挂着已不存在的方案继续走审批
+        if not payload.secondary_allocations:
+            business_repository.replace_allocations(session, business_id, [])
+        elif _plan_changed(old_allocations, new_rows):
+            business_repository.replace_allocations(session, business_id, new_rows)
+        # 汇总先重算：送审快照里的销售额/成本额必须反映本次编辑后的值，
+        # 放到提单之后会固化成上一版本的金额
+        _recalc_totals(session, business)
+        # 提单/撤单与方案同步生命周期：
+        # - 方案为空 → 仅撤回在途单（旧在途单挂着已不存在的方案继续走审批）
+        # - 送审内容与在途单一致 → 保留原单，不撤回不重建（避免反复保存
+        #   刷出「撤回+新建」的审批留痕噪音）
+        # - 其余 → 提新单（内含撤旧建新）
         if payload.secondary_allocations:
-            approval_service.submit_order(
+            snapshot = approval_service.allocation_content(session, business) or None
+            if not approval_service.pending_matches_snapshot(
                 session,
                 order_type=APPROVAL_TYPE_SECONDARY_ALLOCATION,
                 ref_id=business_id,
-                refer_no=business.business_no,
-                submitter=operator,
-            )
+                snapshot=snapshot,
+            ):
+                approval_service.submit_order(
+                    session,
+                    order_type=APPROVAL_TYPE_SECONDARY_ALLOCATION,
+                    ref_id=business_id,
+                    refer_no=business.business_no,
+                    submitter=operator,
+                    snapshot=snapshot,
+                )
         else:
             approval_service.withdraw_pending_orders(
                 session,
@@ -536,7 +579,6 @@ def update_business(
                 ref_id=business_id,
                 operator=operator,
             )
-        _recalc_totals(session, business)
         # 锁定行上已赋值，同一身份映射实例的 _to_out 即反映新值；名称字段
         # 从首查 row 取（换客户时 _ensure_customer 已给出新公司名）
         out = _to_out((business, customer.company_name, owner_name, assistant_name))

backend/app/services/settlement_service.py

@@ -248,7 +248,7 @@ def submit(
         ),
         meta=meta,
     ):
-        settlement = settlement_repository.get_by_id(session, settlement_id)
+        settlement = settlement_repository.get_by_id(session, settlement_id, for_update=True)
         if settlement is None:
             raise NotFoundError("月结不存在")
         if settlement.status not in (SETTLEMENT_STATUS_DRAFT, SETTLEMENT_STATUS_REJECTED):
@@ -260,6 +260,9 @@ def submit(
             ref_id=settlement.id,
             refer_no=f"JS{settlement.settlement_month.replace('-', '')}",
             submitter=operator,
+            # 月结明细在生成时已固化；提交时快照让复核者看到的是送审版本，
+            # 而不是审批期间若发生重生成后的内容
+            snapshot=approval_service.settlement_content(session, settlement.id),
         )
         settlement.approval_order_no = order.order_no
         if order.status == SETTLEMENT_STATUS_APPROVED:
@@ -573,6 +576,7 @@ def _wire_adjustment_approval(session: Session, order, operator: User) -> None:
         ref_id=order.id,
         refer_no=order.order_no,
         submitter=operator,
+        snapshot=approval_service.adjustment_content(session, order.id),
     )
     order.status = (
         ADJUSTMENT_STATUS_EFFECTIVE