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/quality.py

@@ -0,0 +1,38 @@
+from sqlalchemy import Column, Integer, String, Float, DateTime, Text, Boolean, ForeignKey, func
+from app.database import Base
+
+
+class QualityRecord(Base):
+    """质量检验记录"""
+    __tablename__ = "quality_records"
+
+    id                    = Column(Integer, primary_key=True, index=True)
+    coil_no               = Column(String(30), nullable=False, index=True, comment="卷号")
+    production_record_id  = Column(Integer, ForeignKey("production_records.id"), nullable=True, comment="关联生产实绩")
+
+    # 实测规格
+    thickness_actual      = Column(Float, nullable=True, comment="实测厚度 mm")
+    width_actual          = Column(Float, nullable=True, comment="实测宽度 mm")
+    flatness              = Column(Float, nullable=True, comment="平直度 IU")
+    crown                 = Column(Float, nullable=True, comment="凸度 μm")
+
+    # 表面缺陷
+    surface_defect_type   = Column(String(50), nullable=True, comment="表面缺陷类型")
+    defect_length_m       = Column(Float, nullable=True, comment="缺陷长度 m")
+    defect_position       = Column(String(50), nullable=True, comment="缺陷位置")
+
+    # 质量模型评分
+    pi_score              = Column(Float, nullable=True, comment="酸洗指数评分 0-100")
+    surface_score         = Column(Float, nullable=True, comment="表面质量评分 0-100")
+    overall_grade         = Column(String(5), nullable=True, comment="综合等级 A1/A2/B1/B2/C")
+
+    # 残酸 / 粗糙度
+    acid_residual         = Column(Float, nullable=True, comment="残酸量 g/m²")
+    roughness_ra          = Column(Float, nullable=True, comment="粗糙度 Ra μm")
+
+    # 检验信息
+    inspector             = Column(String(50), nullable=True, comment="检验员")
+    inspect_time          = Column(DateTime, nullable=True, comment="检验时间")
+    is_passed             = Column(Boolean, default=True, comment="是否合格")
+
+    created_at            = Column(DateTime, server_default=func.now())