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>

components/modes/bazi-chart.tsx

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+import type { BaziChart, PillarInfo } from "@/lib/calc/bazi";
+
+function PillarRow({ label, pillar }: { label: string; pillar: PillarInfo }) {
+  return (
+    <tr className="border-t">
+      <td className="px-3 py-2 font-medium">{label}</td>
+      <td className="px-3 py-2 font-mono">{pillar.ganZhi}</td>
+      <td className="px-3 py-2">{pillar.shiShenGan}</td>
+      <td className="px-3 py-2 text-sm">
+        {pillar.shiShenZhi.join("、") || "—"}
+      </td>
+      <td className="px-3 py-2 text-sm">{pillar.naYin}</td>
+    </tr>
+  );
+}
+
+export default function BaziChartDisplay({ chart }: { chart: BaziChart }) {
+  return (
+    <div className="space-y-4 rounded-lg border bg-card p-4 text-sm">
+      <div className="grid gap-1 text-muted-foreground sm:grid-cols-2">
+        <span>出生：{chart.birthTime}</span>
+        <span>真太阳时：{chart.trueSolarTime}</span>
+        <span className="sm:col-span-2">农历：{chart.lunarDate}</span>
+      </div>
+
+      <div className="overflow-x-auto">
+        <table className="w-full">
+          <thead className="bg-muted/50 text-left">
+            <tr>
+              <th className="px-3 py-2">柱</th>
+              <th className="px-3 py-2">干支</th>
+              <th className="px-3 py-2">天干十神</th>
+              <th className="px-3 py-2">地支十神</th>
+              <th className="px-3 py-2">纳音</th>
+            </tr>
+          </thead>
+          <tbody>
+            <PillarRow label="年柱" pillar={chart.pillars.year} />
+            <PillarRow label="月柱" pillar={chart.pillars.month} />
+            <PillarRow label="日柱" pillar={chart.pillars.day} />
+            <PillarRow label="时柱" pillar={chart.pillars.time} />
+          </tbody>
+        </table>
+      </div>
+
+      <div>
+        <div className="mb-1 font-medium">大运</div>
+        <p className="text-muted-foreground">
+          起运 {chart.daYun.startYear} 年 {chart.daYun.startMonth} 月{" "}
+          {chart.daYun.startDay} 天 ·{" "}
+          {chart.daYun.items.map((d) => `${d.startAge}岁 ${d.ganZhi}`).join(" → ")}
+        </p>
+      </div>
+
+      <div>
+        <div className="mb-1 font-medium">流年</div>
+        <p className="text-muted-foreground">
+          {chart.liuNian.map((l) => `${l.year}(${l.ganZhi})`).join("、")}
+        </p>
+      </div>
+
+      <div>
+        <div className="mb-1 font-medium">神煞</div>
+        <p className="text-muted-foreground">
+          吉神：{chart.shenSha.ji.join("、") || "无"}
+          <br />
+          凶煞：{chart.shenSha.xiong.join("、") || "无"}
+        </p>
+      </div>
+    </div>
+  );
+}