feat: 完善项目架构并增强分析页面功能

- 新增项目文档和 Docker 配置
  - 添加 README.md 和 TODO.md 项目文档
  - 为各服务添加 Dockerfile 和 docker-compose 配置

- 重构后端架构
  - 新增 adapter 层（HTTP/Python 适配器）
  - 新增 repository 层（数据访问抽象）
  - 新增 router 模块统一管理路由
  - 新增账单处理 handler

- 扩展前端 UI 组件库
  - 新增 Calendar、DateRangePicker、Drawer、Popover 等组件
  - 集成 shadcn-svelte 组件库

- 增强分析页面功能
  - 添加时间范围筛选器（支持本月默认值）
  - 修复 DateRangePicker 默认值显示问题
  - 优化数据获取和展示逻辑

- 完善分析器服务
  - 新增 FastAPI 服务接口
  - 改进账单清理器实现

web/src/routes/+page.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { uploadBill, type UploadResponse } from '$lib/api';
+  import { uploadBill, type UploadResponse, type BillType } from '$lib/api';
   import * as Card from '$lib/components/ui/card';
   import { Button } from '$lib/components/ui/button';
   import { Badge } from '$lib/components/ui/badge';
@@ -16,6 +16,7 @@
   
   let isDragOver = $state(false);
   let selectedFile: File | null = $state(null);
+  let selectedType: BillType = $state('alipay');
   let isUploading = $state(false);
   let uploadResult: UploadResponse | null = $state(null);
   let errorMessage = $state('');
@@ -86,6 +87,14 @@
     selectedFile = file;
     errorMessage = '';
     uploadResult = null;
+    
+    // 根据文件名自动识别账单类型
+    const fileName = file.name.toLowerCase();
+    if (fileName.includes('支付宝') || fileName.includes('alipay')) {
+      selectedType = 'alipay';
+    } else if (fileName.includes('微信') || fileName.includes('wechat')) {
+      selectedType = 'wechat';
+    }
   }
   
   function clearFile() {
@@ -101,7 +110,7 @@
     errorMessage = '';
     
     try {
-      const result = await uploadBill(selectedFile);
+      const result = await uploadBill(selectedFile, selectedType);
       if (result.result) {
         uploadResult = result;
       } else {
@@ -135,7 +144,7 @@
   <!-- 统计卡片 -->
   <div class="grid gap-4 md:grid-cols-2 lg:grid-cols-4">
     {#each stats as stat}
-      <Card.Root>
+      <Card.Root class="transition-all duration-200 hover:shadow-lg hover:-translate-y-1 cursor-default">
         <Card.Header class="flex flex-row items-center justify-between space-y-0 pb-2">
           <Card.Title class="text-sm font-medium">{stat.title}</Card.Title>
           {#if stat.trend === 'up'}
@@ -226,6 +235,27 @@
           </div>
         {/if}
 
+        <!-- 账单类型选择 -->
+        <div class="flex items-center gap-3">
+          <span class="text-sm font-medium">账单类型：</span>
+          <div class="flex gap-2">
+            <Button 
+              variant={selectedType === 'alipay' ? 'default' : 'outline'}
+              size="sm"
+              onclick={() => selectedType = 'alipay'}
+            >
+              支付宝
+            </Button>
+            <Button 
+              variant={selectedType === 'wechat' ? 'default' : 'outline'}
+              size="sm"
+              onclick={() => selectedType = 'wechat'}
+            >
+              微信
+            </Button>
+          </div>
+        </div>
+
         <!-- 上传按钮 -->
         <Button 
           class="w-full"
@@ -256,7 +286,7 @@
               <CheckCircle class="h-5 w-5 text-green-600 dark:text-green-400" />
               <div>
                 <p class="font-medium text-green-800 dark:text-green-200">处理成功</p>
-                <p class="text-sm text-green-600 dark:text-green-400">账单已分析完成</p>
+                <p class="text-sm text-green-600 dark:text-green-400">{uploadResult.message}</p>
               </div>
             </div>
 
@@ -267,6 +297,14 @@
                   {uploadResult.data?.bill_type === 'alipay' ? '支付宝' : '微信'}
                 </Badge>
               </div>
+              <div class="flex items-center justify-between">
+                <span class="text-sm text-muted-foreground">原始记录数</span>
+                <span class="text-sm font-medium">{uploadResult.data?.raw_count ?? 0} 条</span>
+              </div>
+              <div class="flex items-center justify-between">
+                <span class="text-sm text-muted-foreground">清洗后记录数</span>
+                <span class="text-sm font-medium">{uploadResult.data?.cleaned_count ?? 0} 条</span>
+              </div>
               <div class="flex items-center justify-between">
                 <span class="text-sm text-muted-foreground">输出文件</span>
                 <span class="text-sm font-medium">{uploadResult.data?.file_name}</span>
@@ -275,7 +313,7 @@
 
             <div class="flex gap-3 pt-2">
               <a 
-                href={`http://localhost:8080${uploadResult.data?.file_url}`} 
+                href={uploadResult.data?.file_url || '#'} 
                 download
                 class="flex-1"
               >