feat: 前后端全量开发 v0.2

后端:
- 客户模块 CRUD+搜索 (api/services/repositories 分层)
- 合同模块: FG单号规则/意向单转正式单/订单创建自动快照客户信息
- 优化下料: FFD首递减装箱算法(利用率统计/余料/未排入清单)
前端 (Vue3+TS+Element Plus):
- 7页面: 登录/工作台/订单中心/合同/客户/样板库/优化下料
- 自研二维窗型画布渲染器: 解析drawing_data渲染玻璃区域/外框/
  扇开向标记/尺寸标注, 支持缩放平移复位
- 样板库与订单联动(用此样板下单自动带图纸)
- axios统一envelope拦截/登录守卫/付费墙提示
工程:
- SPA history 回退路由, 构建产物挂载后端
- 全接口回归 6/6 通过

src/huamenchuang/services/order_service.py

@@ -14,13 +14,26 @@ class OrderService:
         self.repo = OrderRepository(db)
 
     async def create_order(self, user: User, payload: OrderCreate) -> Order:
-        """创建订单：对齐目标站 {contract_id, drawing_data, pic_url} 契约。"""
+        """创建订单：对齐目标站 {contract_id, drawing_data, pic_url} 契约。
+        指定 contract_id 时自动快照合同客户信息。"""
+        customer_id = payload.customer_id
+        customer_name = phone = address = ""
+        if payload.contract_id:
+            from huamenchuang.repositories.contract_repo import ContractRepository
+            contract = await ContractRepository(self.db).get(payload.contract_id, user.company_id)
+            if contract is None:
+                raise KeyError("关联合同不存在")
+            customer_id = contract.customer_id
+            customer_name, phone, address = contract.customer_name, contract.phone, contract.address
         order = Order(
             order_no=await self.repo.next_order_no(user.company_id),
             contract_id=payload.contract_id,
             drawing_data=payload.drawing_data,
             pic_url=payload.pic_url,
-            customer_id=payload.customer_id,
+            customer_id=customer_id,
+            customer_name=customer_name,
+            phone=phone,
+            address=address,
             note=payload.note,
             money=payload.money,
             count=payload.count,