feat: Add animated particles background and interactive server map

- Added ParticlesBackground component with Canvas-based animation
- Created ServerMap with 25+ global server locations
- Added interactive hover tooltips for server details
- Implemented real-time stats display (users, latency)
- Fixed hydration mismatch error in ServerMap
- Increased particle visibility (opacity 0.6, 150 particles)
- Added Docker support with docker-compose.yml
- Created comprehensive documentation (SETUP.md, DEBUG.md, FEATURES.md)
- Added translations for new sections (EN/RU/ZH)
- Configured proper port mapping (5173)

New features:
- Animated particles with dynamic connections
- Global network infrastructure visualization
- 25 server locations across 6 continents
- Hover interactions with server statistics
- Responsive design for all screen sizes

src/hooks/use-mobile.tsx

@@ -0,0 +1,19 @@
+import * as React from "react"
+
+const MOBILE_BREAKPOINT = 768
+
+export function useIsMobile() {
+  const [isMobile, setIsMobile] = React.useState<boolean | undefined>(undefined)
+
+  React.useEffect(() => {
+    const mql = window.matchMedia(`(max-width: ${MOBILE_BREAKPOINT - 1}px)`)
+    const onChange = () => {
+      setIsMobile(window.innerWidth < MOBILE_BREAKPOINT)
+    }
+    mql.addEventListener("change", onChange)
+    setIsMobile(window.innerWidth < MOBILE_BREAKPOINT)
+    return () => mql.removeEventListener("change", onChange)
+  }, [])
+
+  return !!isMobile
+}

src/hooks/useScrollAnimation.ts

@@ -0,0 +1,26 @@
+import { useEffect, useRef, useState } from "react";
+
+export function useScrollAnimation(threshold = 0.15) {
+  const ref = useRef<HTMLDivElement>(null);
+  const [isVisible, setIsVisible] = useState(false);
+
+  useEffect(() => {
+    const el = ref.current;
+    if (!el) return;
+
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (entry.isIntersecting) {
+          setIsVisible(true);
+          observer.unobserve(el);
+        }
+      },
+      { threshold }
+    );
+
+    observer.observe(el);
+    return () => observer.disconnect();
+  }, [threshold]);
+
+  return { ref, isVisible };
+}