chore: initial commit - maqt-desktop v0.2

- Phase 1-5: UI framework, auth, weapon schemes, color filters, system optimization
- Industrial/tech design style with Chinese localization
- Points to gch3n.online/delta backend API
- Hardware monitor, filter editor, and all module pages

src/pages/XixiHaha.tsx

@@ -0,0 +1,16 @@
+import React from 'react';
+import Card from '../components/ui/Card';
+
+export default function XixiHaha() {
+  return (
+    <div className="flex flex-col gap-3 p-3 flex-1">
+      <div className="flex items-center justify-between border-b border-[#333] pb-2">
+        <h1 className="text-[11px] font-bold tracking-[0.15em] uppercase">神秘力量</h1>
+        <span className="tech-sn">DEV-03</span>
+      </div>
+      <Card className="p-3" serial="WIP-03">
+        <p className="text-[9px] font-mono text-[#555]">此功能开发中</p>
+      </Card>
+    </div>
+  );
+}