feat(dashboard): add dashboard page with stats and splash screen

src/components/common/SplashScreen.tsx

@@ -0,0 +1,40 @@
+import { useEffect, useState } from 'react';
+import { INLINE_LOGO_JPEG } from '@/assets/logoInline';
+import './SplashScreen.scss';
+
+interface SplashScreenProps {
+  onFinish: () => void;
+  duration?: number;
+}
+
+export function SplashScreen({ onFinish, duration = 1500 }: SplashScreenProps) {
+  const [fadeOut, setFadeOut] = useState(false);
+
+  useEffect(() => {
+    const fadeTimer = setTimeout(() => {
+      setFadeOut(true);
+    }, duration - 400);
+
+    const finishTimer = setTimeout(() => {
+      onFinish();
+    }, duration);
+
+    return () => {
+      clearTimeout(fadeTimer);
+      clearTimeout(finishTimer);
+    };
+  }, [duration, onFinish]);
+
+  return (
+    <div className={`splash-screen ${fadeOut ? 'fade-out' : ''}`}>
+      <div className="splash-content">
+        <img src={INLINE_LOGO_JPEG} alt="CPAMC" className="splash-logo" />
+        <h1 className="splash-title">CLI Proxy API</h1>
+        <p className="splash-subtitle">Management Center</p>
+        <div className="splash-loader">
+          <div className="splash-loader-bar" />
+        </div>
+      </div>
+    </div>
+  );
+}