Implement three divination modes, learn pages, and PM2 deploy on port 3130.

Add liuyao/bazi/combined flows with shared calc and AI infrastructure, 64-gua learn routes, and update Ubuntu PM2 deployment docs for port 3130.

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

app/layout.tsx

@@ -5,11 +5,11 @@ import Umami from "@/components/umami";
 import { ThemeProvider } from "next-themes";
 
 export const metadata: Metadata = {
-  title: "AI 算卦 - 在线卜卦 GPT4 解读",
+  title: "知命阁 - 易经学习 · 六爻算卦 · 生辰八字",
   description:
-    "AI 算卦 - 通过进行六次硬币的随机卜筮，生成卦象，并使用 AI 对卦象进行分析｜AI 算命、在线算命、在线算卦、周易易经64卦",
+    "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: {
-    title: "AI 算卦",
+    title: "知命阁",
   },
 };