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/lib/components/analysis/DailyTrendChart.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
   import * as Card from '$lib/components/ui/card';
   import * as Select from '$lib/components/ui/select';
-  import * as Dialog from '$lib/components/ui/dialog';
+  import * as Drawer from '$lib/components/ui/drawer';
   import Activity from '@lucide/svelte/icons/activity';
   import TrendingUp from '@lucide/svelte/icons/trending-up';
   import TrendingDown from '@lucide/svelte/icons/trending-down';
@@ -46,6 +46,12 @@
     hiddenCategories = newSet;
   }
 
+  // 提取日期字符串 (YYYY-MM-DD) - 兼容多种格式
+  function extractDateStr(timeStr: string): string {
+    // 处理 ISO 格式 (2025-12-29T10:30:00Z) 或空格格式 (2025-12-29 10:30:00)
+    return timeStr.split('T')[0].split(' ')[0];
+  }
+
   const timeRangeOptions = [
     { value: '7d', label: '最近 7 天' },
     { value: 'week', label: '本周' },
@@ -119,7 +125,7 @@
     // 过滤支出记录
     const expenseRecords = records.filter(r => {
       if (r.income_expense !== '支出') return false;
-      const recordDate = new Date(r.time.split(' ')[0]);
+      const recordDate = new Date(extractDateStr(r.time));
       return recordDate >= cutoffDate;
     });
 
@@ -130,7 +136,7 @@
     const categoryTotals: Record<string, number> = {};
 
     expenseRecords.forEach(record => {
-      const dateStr = record.time.split(' ')[0];
+      const dateStr = extractDateStr(record.time);
       const category = record.category || '其他';
       const amount = parseFloat(record.amount) || 0;
 
@@ -526,7 +532,7 @@
     selectedDate = clickedDate;
     selectedDateRecords = records.filter(r => {
       if (r.income_expense !== '支出') return false;
-      const recordDateStr = r.time.split(' ')[0];
+      const recordDateStr = extractDateStr(r.time);
       return recordDateStr === dateStr;
     });
     
@@ -641,7 +647,7 @@
 
       <!-- 趋势图 (自定义 SVG) -->
       <div class="relative w-full" style="aspect-ratio: {chartWidth}/{chartHeight};">
-        <!-- svelte-ignore a11y_no_noninteractive_tabindex a11y_no_noninteractive_element_interactions -->
+        <!-- svelte-ignore a11y_no_noninteractive_tabindex a11y_no_noninteractive_element_interactions a11y_click_events_have_key_events -->
         <svg 
           viewBox="0 0 {chartWidth} {chartHeight}" 
           class="w-full h-full cursor-pointer outline-none focus:outline-none"
@@ -827,25 +833,25 @@
   </Card.Root>
 {/if}
 
-<!-- 当日详情 Dialog -->
-<Dialog.Root bind:open={dialogOpen}>
-  <Dialog.Content class="w-fit min-w-[500px] max-w-[90vw] max-h-[80vh] overflow-hidden flex flex-col">
-    <Dialog.Header>
-      <Dialog.Title class="flex items-center gap-2">
+<!-- 当日详情 Drawer -->
+<Drawer.Root bind:open={dialogOpen}>
+  <Drawer.Content class="sm:max-w-4xl">
+    <Drawer.Header>
+      <Drawer.Title class="flex items-center gap-2">
         <Calendar class="h-5 w-5" />
         {#if selectedDate}
           {selectedDate.toLocaleDateString('zh-CN', { year: 'numeric', month: 'long', day: 'numeric', weekday: 'long' })}
         {/if}
-      </Dialog.Title>
-      <Dialog.Description>
+      </Drawer.Title>
+      <Drawer.Description>
         {#if selectedDateStats}
           {@const stats = selectedDateStats}
           共 {stats!.count} 笔支出，合计 ¥{stats!.total.toFixed(2)}
         {/if}
-      </Dialog.Description>
-    </Dialog.Header>
+      </Drawer.Description>
+    </Drawer.Header>
     
-    <div class="flex-1 overflow-auto py-4">
+    <div class="flex-1 overflow-auto py-4 px-4 md:px-0">
       {#if selectedDateStats}
         {@const stats = selectedDateStats}
         
@@ -886,5 +892,5 @@
         <p class="text-center text-muted-foreground py-8">暂无数据</p>
       {/if}
     </div>
-  </Dialog.Content>
-</Dialog.Root>
+  </Drawer.Content>
+</Drawer.Root>