fix: 修复多个关键问题

- 修复前端路由守卫：未登录时不显示提示，直接跳转登录页
- 修复API拦截器：401错误不显示提示，直接跳转
- 增强验证码显示：图片尺寸从120x40增加到200x80
- 增大验证码字体：从28号增加到48号
- 优化验证码字符：排除易混淆的0和1
- 减少干扰线：从5条减少到3条，添加背景色优化
- 增强登录API日志：添加详细的调试日志
- 增强验证码生成和验证日志
- 优化异常处理和错误追踪

影响文件：
- src/router/index.ts
- src/api/request.ts
- app/services/auth_service.py
- app/api/v1/auth.py
- app/schemas/user.py

测试状态：
- 前端构建通过
- 后端语法检查通过
- 验证码显示效果优化完成

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app/models/allocation.py

@@ -0,0 +1,89 @@
+"""
+资产分配相关数据模型
+"""
+from datetime import datetime, date
+from sqlalchemy import Column, BigInteger, String, Integer, Text, ForeignKey, DateTime, Date, Numeric, Index
+from sqlalchemy.orm import relationship
+from app.db.base import Base
+
+
+class AssetAllocationOrder(Base):
+    """资产分配单表"""
+
+    __tablename__ = "asset_allocation_orders"
+
+    id = Column(BigInteger, primary_key=True, index=True)
+    order_code = Column(String(50), unique=True, nullable=False, index=True, comment="分配单号")
+    order_type = Column(String(20), nullable=False, index=True, comment="单据类型")
+    title = Column(String(200), nullable=False, comment="标题")
+    source_organization_id = Column(BigInteger, ForeignKey("organizations.id"), nullable=True, comment="调出网点ID")
+    target_organization_id = Column(BigInteger, ForeignKey("organizations.id"), nullable=False, index=True, comment="调入网点ID")
+    applicant_id = Column(BigInteger, ForeignKey("users.id"), nullable=False, index=True, comment="申请人ID")
+    approver_id = Column(BigInteger, ForeignKey("users.id"), nullable=True, comment="审批人ID")
+    approval_status = Column(String(20), default="pending", nullable=False, index=True, comment="审批状态")
+    approval_time = Column(DateTime, nullable=True, comment="审批时间")
+    approval_remark = Column(Text, nullable=True, comment="审批备注")
+    expect_execute_date = Column(Date, nullable=True, comment="预计执行日期")
+    actual_execute_date = Column(Date, nullable=True, comment="实际执行日期")
+    executor_id = Column(BigInteger, ForeignKey("users.id"), nullable=True, comment="执行人ID")
+    execute_status = Column(String(20), default="pending", nullable=False, comment="执行状态")
+    remark = Column(Text, nullable=True, comment="备注")
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
+    created_by = Column(BigInteger, ForeignKey("users.id"), nullable=False)
+    updated_by = Column(BigInteger, ForeignKey("users.id"), nullable=True)
+
+    # 关系
+    source_organization = relationship("Organization", foreign_keys=[source_organization_id])
+    target_organization = relationship("Organization", foreign_keys=[target_organization_id])
+    applicant = relationship("User", foreign_keys=[applicant_id])
+    approver = relationship("User", foreign_keys=[approver_id])
+    executor = relationship("User", foreign_keys=[executor_id])
+    items = relationship("AssetAllocationItem", back_populates="order", cascade="all, delete-orphan")
+
+    # 索引
+    __table_args__ = (
+        Index("idx_allocation_orders_code", "order_code"),
+        Index("idx_allocation_orders_target_org", "target_organization_id"),
+    )
+
+    def __repr__(self):
+        return f"<AssetAllocationOrder(id={self.id}, order_code={self.order_code}, order_type={self.order_type})>"
+
+
+class AssetAllocationItem(Base):
+    """资产分配单明细表"""
+
+    __tablename__ = "asset_allocation_items"
+
+    id = Column(BigInteger, primary_key=True, index=True)
+    order_id = Column(BigInteger, ForeignKey("asset_allocation_orders.id", ondelete="CASCADE"), nullable=False, comment="分配单ID")
+    asset_id = Column(BigInteger, ForeignKey("assets.id"), nullable=False, comment="资产ID")
+    asset_code = Column(String(50), nullable=False, comment="资产编码")
+    asset_name = Column(String(200), nullable=False, comment="资产名称")
+    from_organization_id = Column(BigInteger, ForeignKey("organizations.id"), nullable=True, comment="原网点ID")
+    to_organization_id = Column(BigInteger, ForeignKey("organizations.id"), nullable=True, comment="目标网点ID")
+    from_status = Column(String(20), nullable=True, comment="原状态")
+    to_status = Column(String(20), nullable=True, comment="目标状态")
+    execute_status = Column(String(20), default="pending", nullable=False, index=True, comment="执行状态")
+    execute_time = Column(DateTime, nullable=True, comment="执行时间")
+    failure_reason = Column(Text, nullable=True, comment="失败原因")
+    remark = Column(Text, nullable=True, comment="备注")
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
+
+    # 关系
+    order = relationship("AssetAllocationOrder", back_populates="items")
+    asset = relationship("Asset")
+    from_organization = relationship("Organization", foreign_keys=[from_organization_id])
+    to_organization = relationship("Organization", foreign_keys=[to_organization_id])
+
+    # 索引
+    __table_args__ = (
+        Index("idx_allocation_items_order", "order_id"),
+        Index("idx_allocation_items_asset", "asset_id"),
+        Index("idx_allocation_items_status", "execute_status"),
+    )
+
+    def __repr__(self):
+        return f"<AssetAllocationItem(id={self.id}, order_id={self.order_id}, asset_code={self.asset_code})>"