feat: v0.4 画布编辑器——拖拽布置分格v1

- WindoorCanvas editable模式: 加竖梃/横梃点击玻璃区域实时分割
- 多边形两次交叉点法分割, mm.sp分割线记录同步, 撤销栈
- 订单详情: 编辑分格后保存图纸(PUT orders/{id})
- 样板库: 另存为我的样板(POST windoor/templates, 企业隔离)
- 10个API端点回归全部通过

src/huamenchuang/schemas/windoor.py

@@ -0,0 +1,9 @@
+"""样板库 schemas。"""
+from pydantic import BaseModel, Field
+
+
+class TemplateSave(BaseModel):
+    name: str = Field(min_length=1, max_length=128)
+    drawing_data: str = Field(min_length=2)
+    catelog_id: int | None = None
+    note: str = ""