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/schemas/statistics.py

@@ -0,0 +1,108 @@
+"""
+统计分析相关的Pydantic Schema
+"""
+from typing import Optional, List, Dict, Any
+from datetime import datetime, date
+from decimal import Decimal
+from pydantic import BaseModel, Field
+
+
+class StatisticsOverview(BaseModel):
+    """总览统计Schema"""
+    total_assets: int = Field(..., description="资产总数")
+    total_value: Decimal = Field(..., description="资产总价值")
+    in_stock_count: int = Field(..., description="库存中数量")
+    in_use_count: int = Field(..., description="使用中数量")
+    maintenance_count: int = Field(..., description="维修中数量")
+    scrapped_count: int = Field(..., description="已报废数量")
+    today_purchase_count: int = Field(..., description="今日采购数量")
+    this_month_purchase_count: int = Field(..., description="本月采购数量")
+    organization_count: int = Field(..., description="机构网点数")
+    supplier_count: int = Field(..., description="供应商数")
+
+
+class PurchaseStatistics(BaseModel):
+    """采购统计Schema"""
+    total_purchase_count: int = Field(..., description="总采购数量")
+    total_purchase_value: Decimal = Field(..., description="总采购金额")
+    monthly_trend: List[Dict[str, Any]] = Field(default_factory=list, description="月度趋势")
+    supplier_distribution: List[Dict[str, Any]] = Field(default_factory=list, description="供应商分布")
+    category_distribution: List[Dict[str, Any]] = Field(default_factory=list, description="分类分布")
+
+
+class DepreciationStatistics(BaseModel):
+    """折旧统计Schema"""
+    total_depreciation_value: Decimal = Field(..., description="总折旧金额")
+    average_depreciation_rate: Decimal = Field(..., description="平均折旧率")
+    depreciation_by_category: List[Dict[str, Any]] = Field(default_factory=list, description="分类折旧")
+    assets_near_end_life: List[Dict[str, Any]] = Field(default_factory=list, description="接近使用年限的资产")
+
+
+class ValueStatistics(BaseModel):
+    """价值统计Schema"""
+    total_value: Decimal = Field(..., description="资产总价值")
+    net_value: Decimal = Field(..., description="资产净值")
+    depreciation_value: Decimal = Field(..., description="累计折旧")
+    value_by_category: List[Dict[str, Any]] = Field(default_factory=list, description="分类价值")
+    value_by_organization: List[Dict[str, Any]] = Field(default_factory=list, description="网点价值")
+    high_value_assets: List[Dict[str, Any]] = Field(default_factory=list, description="高价值资产")
+
+
+class TrendAnalysis(BaseModel):
+    """趋势分析Schema"""
+    asset_trend: List[Dict[str, Any]] = Field(default_factory=list, description="资产数量趋势")
+    value_trend: List[Dict[str, Any]] = Field(default_factory=list, description="资产价值趋势")
+    purchase_trend: List[Dict[str, Any]] = Field(default_factory=list, description="采购趋势")
+    maintenance_trend: List[Dict[str, Any]] = Field(default_factory=list, description="维修趋势")
+    allocation_trend: List[Dict[str, Any]] = Field(default_factory=list, description="调拨趋势")
+
+
+class MaintenanceStatistics(BaseModel):
+    """维修统计Schema"""
+    total_maintenance_count: int = Field(..., description="总维修次数")
+    total_maintenance_cost: Decimal = Field(..., description="总维修费用")
+    pending_count: int = Field(..., description="待维修数量")
+    in_progress_count: int = Field(..., description="维修中数量")
+    completed_count: int = Field(..., description="已完成数量")
+    monthly_trend: List[Dict[str, Any]] = Field(default_factory=list, description="月度趋势")
+    type_distribution: List[Dict[str, Any]] = Field(default_factory=list, description="维修类型分布")
+    cost_by_category: List[Dict[str, Any]] = Field(default_factory=list, description="分类维修费用")
+
+
+class AllocationStatistics(BaseModel):
+    """分配统计Schema"""
+    total_allocation_count: int = Field(..., description="总分配次数")
+    pending_count: int = Field(..., description="待审批数量")
+    approved_count: int = Field(..., description="已批准数量")
+    rejected_count: int = Field(..., description="已拒绝数量")
+    monthly_trend: List[Dict[str, Any]] = Field(default_factory=list, description="月度趋势")
+    by_organization: List[Dict[str, Any]] = Field(default_factory=list, description="网点分配统计")
+    transfer_statistics: List[Dict[str, Any]] = Field(default_factory=list, description="调拨统计")
+
+
+class StatisticsQueryParams(BaseModel):
+    """统计查询参数"""
+    start_date: Optional[date] = Field(None, description="开始日期")
+    end_date: Optional[date] = Field(None, description="结束日期")
+    organization_id: Optional[int] = Field(None, description="网点ID")
+    device_type_id: Optional[int] = Field(None, description="设备类型ID")
+    group_by: Optional[str] = Field(None, description="分组字段")
+
+
+class ExportStatisticsRequest(BaseModel):
+    """导出统计请求"""
+    report_type: str = Field(..., description="报表类型")
+    start_date: Optional[date] = Field(None, description="开始日期")
+    end_date: Optional[date] = Field(None, description="结束日期")
+    organization_id: Optional[int] = Field(None, description="网点ID")
+    device_type_id: Optional[int] = Field(None, description="设备类型ID")
+    format: str = Field(default="xlsx", description="导出格式")
+    include_charts: bool = Field(default=False, description="是否包含图表")
+
+
+class ExportStatisticsResponse(BaseModel):
+    """导出统计响应"""
+    file_url: str = Field(..., description="文件URL")
+    file_name: str = Field(..., description="文件名")
+    file_size: int = Field(..., description="文件大小(字节)")
+    record_count: int = Field(..., description="记录数量")