fix(web): PWA manifest 主题色跟随新主色

安装到主屏后的启动背景与状态栏色此前仍是旧的墨绿/暖白；e2e 断言与文档同步更新。

web/e2e/pwa.mjs

@@ -118,7 +118,7 @@ async function main() {
   check("页面骨架已预缓存", shellCached);
 
   const themeColor = await page.getAttribute('meta[name="theme-color"]', "content");
-  check("主题色是墨绿", themeColor === "#2f6054", String(themeColor));
+  check("主题色是景泰蓝", themeColor === "#274b73", String(themeColor));
   check("桌面尺寸没有控制台报错", errors.length === 0, errors.join(" | "));
   await desktop.close();
 

web/vite.config.ts

@@ -22,8 +22,8 @@ export default defineConfig({
         scope: "/",
         display: "standalone",
         orientation: "any",
-        background_color: "#f7f5f0",
-        theme_color: "#2f6054",
+        background_color: "#f3f5f9",
+        theme_color: "#274b73",
         categories: ["productivity", "business"],
         icons: [
           { src: "/icons/icon-192.png", sizes: "192x192", type: "image/png", purpose: "any" },