feat: 移除PDI和订单号字段，新增设备巡检模块

- 从物料跟踪页面移除订单号列和表单字段
- 从导航菜单移除PDI管理，添加设备巡检
- 新增InspectionLocation和InspectionRecord后端模型和API
- 新增设备巡检前端页面（左侧点位列表，右侧设备和历史记录）

backend/app/api/__init__.py

@@ -0,0 +1,17 @@
+from fastapi import APIRouter
+from app.api import auth, material, production, plan, downtime, equipment, message, dashboard
+from app.api import prediction, pdi, quality, inspection
+
+router = APIRouter()
+router.include_router(auth.router,        prefix="/auth",       tags=["认证"])
+router.include_router(dashboard.router,   prefix="/dashboard",  tags=["看板"])
+router.include_router(material.router,    prefix="/material",   tags=["物料跟踪"])
+router.include_router(production.router,  prefix="/production", tags=["实绩管理"])
+router.include_router(plan.router,        prefix="/plan",       tags=["计划管理"])
+router.include_router(downtime.router,    prefix="/downtime",   tags=["停机管理"])
+router.include_router(equipment.router,   prefix="/equipment",  tags=["设备管理"])
+router.include_router(message.router,     prefix="/message",    tags=["报文管理"])
+router.include_router(prediction.router,  prefix="/prediction", tags=["工艺预测模型"])
+router.include_router(pdi.router,         prefix="/pdi",        tags=["PDI管理"])
+router.include_router(quality.router,     prefix="/quality",    tags=["质量管理"])
+router.include_router(inspection.router,  prefix="/inspection", tags=["设备巡检"])