@

性能与用户体验全面优化

    前端性能:
    - 移除 Three.js 依赖（~600KB），天气粒子改为纯 CSS 动画 + Canvas 2D
    - Google Fonts 切换为 next/font 自托管，消除跨域字体请求
    - 合并 ScanTerminalLightTheme.module.css (37KB) 到主 CSS，亮/暗主题统一用 CSS 变量
    - 新增 /api/dashboard/init 聚合端点，首次加载 4 次往返 → 1 次
    - 添加 Service Worker 静态资源缓存，修复 PWA manifest 配置

    用户体验:
    - 新增全局错误边界 error.tsx / global-error.tsx，崩溃不再白屏
    - 决策卡和城市详情的更新时间改为相对时间（"15秒前"），每秒自动刷新
    - 数据陈旧时状态标签从青色切换为琥珀色提示

    DEB 算法增强:
    - 市场扫描路径接入 Open-Meteo 多模型数据（ECMWF/GFS/ICON/JMA/HRDPS 等）
    - MAE 计算加入时间衰减（decay_factor=0.85），近期模型误差权重更高

    Scope-risk: MEDIUM — 全量 170 测试通过，前端 TypeScript/build 通过，ruff 零告警
    Tested: python -m pytest -q (170 passed), npx tsc --noEmit (0 errors), npm run build (success), ruff check .
@

frontend/components/dashboard/scan-root-styles.ts

@@ -1,5 +1,5 @@
 /* Barrel: pre-combined scan-terminal root class name.
-   Consolidates 22 CSS Modules that are always co-imported into
+   Consolidates 20 CSS Modules that are always co-imported into
    a single className, keeping ScanTerminalDashboard.tsx lean. */
 
 import clsx from "clsx";
@@ -18,7 +18,6 @@ import scanTerminalBoardStyles from "./ScanTerminalBoard.module.css";
 import scanTerminalCardStyles from "./ScanTerminalCard.module.css";
 import scanTerminalDetailStyles from "./ScanTerminalDetail.module.css";
 import scanTerminalFiltersStyles from "./ScanTerminalFilters.module.css";
-import scanTerminalLightThemeStyles from "./ScanTerminalLightTheme.module.css";
 import scanTerminalListStyles from "./ScanTerminalList.module.css";
 import scanTerminalMobileStyles from "./ScanTerminalMobile.module.css";
 import scanTerminalOpportunityStyles from "./ScanTerminalOpportunity.module.css";
@@ -41,7 +40,6 @@ export const scanRootClass = clsx(
   scanTerminalOpportunityStyles.root,
   scanTerminalCardStyles.root,
   scanTerminalMobileStyles.root,
-  scanTerminalLightThemeStyles.root,
   detailChromeStyles.root,
   detailContentStyles.root,
   detailSectionsStyles.root,