Redesign UI with zen cards, split AI panel, and PWA install support.

Learn uses 64-gua card grid; liuyao/bazi/combined use two input cards plus sticky right AI panel; add manifest, service worker, and install prompt.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/layout.tsx

@@ -2,6 +2,7 @@ import "./globals.css";
 import type { Metadata, Viewport } from "next";
 import React from "react";
 import Umami from "@/components/umami";
+import PwaProvider from "@/components/pwa/pwa-provider";
 import { ThemeProvider } from "next-themes";
 
 export const metadata: Metadata = {
@@ -9,8 +10,11 @@ export const metadata: Metadata = {
   description:
     "知命阁 — 融合周易智慧与人工智能，提供易经学习、六爻算卦、生辰八字排盘、综合测算等服务",
   appleWebApp: {
+    capable: true,
     title: "知命阁",
+    statusBarStyle: "default",
   },
+  manifest: "/manifest.webmanifest",
 };
 
 export const viewport: Viewport = {
@@ -45,6 +49,7 @@ export default function RootLayout({
           disableTransitionOnChange
         >
           {children}
+          <PwaProvider />
         </ThemeProvider>
         <Umami />
       </body>