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/models/production.py

@@ -0,0 +1,28 @@
+from sqlalchemy import Column, Integer, String, Float, DateTime, Text, ForeignKey, func
+from app.database import Base
+
+
+class ProductionRecord(Base):
+    """生产实绩"""
+    __tablename__ = "production_records"
+
+    id = Column(Integer, primary_key=True, index=True)
+    coil_no = Column(String(30), nullable=False, index=True)
+    plan_id = Column(Integer, ForeignKey("production_plans.id"), nullable=True)
+    shift = Column(String(10), comment="班次: 甲/乙/丙/丁")
+    shift_date = Column(DateTime, comment="班期")
+    start_time = Column(DateTime, comment="开始时间")
+    end_time = Column(DateTime, comment="结束时间")
+    process_length = Column(Float, comment="处理长度m")
+    process_weight = Column(Float, comment="处理重量kg")
+    avg_speed = Column(Float, comment="平均速度m/min")
+    max_speed = Column(Float, comment="最大速度m/min")
+    acid_consumption = Column(Float, comment="酸耗量L")
+    inlet_thickness = Column(Float, comment="入口厚度mm")
+    outlet_thickness = Column(Float, comment="出口厚度mm")
+    inlet_width = Column(Float, comment="入口宽度mm")
+    quality_grade = Column(String(10), comment="质量等级")
+    operator = Column(String(50))
+    remark = Column(Text)
+    created_at = Column(DateTime, server_default=func.now())
+    updated_at = Column(DateTime, server_default=func.now(), onupdate=func.now())