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/organization.py

@@ -0,0 +1,42 @@
+"""
+机构网点相关数据模型
+"""
+from datetime import datetime
+from sqlalchemy import Column, BigInteger, String, Integer, Text, ForeignKey, DateTime, Index
+from sqlalchemy.orm import relationship
+from app.db.base import Base
+
+
+class Organization(Base):
+    """机构/网点表"""
+
+    __tablename__ = "organizations"
+
+    id = Column(BigInteger, primary_key=True, index=True)
+    org_code = Column(String(50), unique=True, nullable=False, index=True, comment="机构代码")
+    org_name = Column(String(200), nullable=False, comment="机构名称")
+    org_type = Column(String(20), nullable=False, comment="机构类型: province, city, outlet")
+    parent_id = Column(BigInteger, ForeignKey("organizations.id"), nullable=True, comment="父机构ID")
+    tree_path = Column(String(1000), nullable=True, comment="树形路径: /1/2/3/")
+    tree_level = Column(Integer, default=0, nullable=False, comment="层级")
+    address = Column(String(500), nullable=True, comment="地址")
+    contact_person = Column(String(100), nullable=True, comment="联系人")
+    contact_phone = Column(String(20), nullable=True, comment="联系电话")
+    status = Column(String(20), default="active", nullable=False, comment="状态: active, inactive")
+    sort_order = Column(Integer, default=0, nullable=False, comment="排序")
+    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=True)
+    updated_by = Column(BigInteger, ForeignKey("users.id"), nullable=True)
+    deleted_at = Column(DateTime, nullable=True)
+    deleted_by = Column(BigInteger, ForeignKey("users.id"), nullable=True)
+
+    # 关系
+    parent = relationship("Organization", remote_side=[id], foreign_keys=[parent_id])
+    children = relationship("Organization", foreign_keys=[parent_id], backref="children_ref")
+    created_user = relationship("User", foreign_keys=[created_by])
+    updated_user = relationship("User", foreign_keys=[updated_by])
+    deleted_user = relationship("User", foreign_keys=[deleted_by])
+
+    def __repr__(self):
+        return f"<Organization(id={self.id}, org_code={self.org_code}, org_name={self.org_name})>"