feat: v0.3 报价算料引擎与仓库库存模块

后端:
- 报价算料: 从drawing_data几何提取型材清单(外框/中梃/扇框投影长度)
  与玻璃面积(鞋带公式), 套价格本计价, 支持样板/订单/自定义图纸三入口
- 仓库库存: 材料CRUD/出入库/流水/负库存拦截/预警线
- SQLite默认路径锚定项目根目录(修复cwd依赖)
前端:
- 仓库库存页(筛选/出入库对话框/预警高亮)
- 算料报价弹窗(样板库与订单详情入口, 支持打印)
- 路由与导航更新(8页面)
回归: 9个API端点全部200, 报价/优化/SPA路由验证通过

src/huamenchuang/models/__init__.py

@@ -1,5 +1,11 @@
 """ORM 模型统一导出。"""
-from huamenchuang.models.contract import Contract, Customer
+from huamenchuang.models.contract import (
+    Contract,
+    Customer,
+    ReceiptAccount,
+    StockMove,
+    WarehouseItem,
+)
 from huamenchuang.models.order import DEFAULT_PROCESSES, Order, OrderLog, OrderProcess
 from huamenchuang.models.user import User
 from huamenchuang.models.windoor_template import WindoorCatelog, WindoorTemplate
@@ -11,7 +17,10 @@ __all__ = [
     "Order",
     "OrderLog",
     "OrderProcess",
+    "ReceiptAccount",
+    "StockMove",
     "User",
+    "WarehouseItem",
     "WindoorCatelog",
     "WindoorTemplate",
 ]

src/huamenchuang/models/contract.py

@@ -25,6 +25,63 @@ class Customer(Base):
     )
 
 
+class ReceiptAccount(Base):
+    """收款账户。"""
+
+    __tablename__ = "receipt_accounts"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    company_id: Mapped[int] = mapped_column(default=1, index=True)
+    type: Mapped[int] = mapped_column(default=1)  # 1银行 2现金 3其他
+    name: Mapped[str] = mapped_column(String(64))
+    number: Mapped[str] = mapped_column(String(64), default="")
+    bank: Mapped[str] = mapped_column(String(64), default="")
+    note: Mapped[str] = mapped_column(Text, default="")
+    is_default: Mapped[int] = mapped_column(default=0)
+    balance: Mapped[float] = mapped_column(Numeric(12, 2), default=0)
+    created_at: Mapped[datetime.datetime] = mapped_column(DateTime, default=datetime.datetime.utcnow)
+
+
+class WarehouseItem(Base):
+    """材料库存（型材/玻璃/五金/配件）。"""
+
+    __tablename__ = "warehouse_items"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    company_id: Mapped[int] = mapped_column(default=1, index=True)
+    bom_code: Mapped[str] = mapped_column(String(32), default="")
+    name: Mapped[str] = mapped_column(String(128))
+    # profile型材/glass玻璃/hardware五金/addon配件
+    material: Mapped[str] = mapped_column(String(16), default="profile", index=True)
+    color: Mapped[str] = mapped_column(String(32), default="")
+    spec: Mapped[str] = mapped_column(String(64), default="")   # 规格型号
+    unit: Mapped[str] = mapped_column(String(8), default="根")
+    cost: Mapped[float] = mapped_column(Numeric(12, 2), default=0)
+    price: Mapped[float] = mapped_column(Numeric(12, 2), default=0)
+    count: Mapped[float] = mapped_column(Numeric(12, 2), default=0)
+    warning: Mapped[float] = mapped_column(Numeric(12, 2), default=0)  # 库存预警线
+    length: Mapped[int] = mapped_column(default=0)  # 单根长度mm(型材)
+    note: Mapped[str] = mapped_column(Text, default="")
+    created_at: Mapped[datetime.datetime] = mapped_column(DateTime, default=datetime.datetime.utcnow)
+    updated_at: Mapped[datetime.datetime] = mapped_column(
+        DateTime, default=datetime.datetime.utcnow, onupdate=datetime.datetime.utcnow
+    )
+
+
+class StockMove(Base):
+    """出入库流水。direction: 1入库 -1出库"""
+
+    __tablename__ = "stock_moves"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    item_id: Mapped[int] = mapped_column(ForeignKey("warehouse_items.id"), index=True)
+    direction: Mapped[int] = mapped_column(default=1)
+    count: Mapped[float] = mapped_column(Numeric(12, 2), default=0)
+    note: Mapped[str] = mapped_column(String(255), default="")
+    user_id: Mapped[int] = mapped_column(default=0)
+    created_at: Mapped[datetime.datetime] = mapped_column(DateTime, default=datetime.datetime.utcnow)
+
+
 class Contract(Base):
     """合同/意向单：目标站契约 status="意向单" 起步，oids[] 记录关联订单。"""