feat: revamp dashboard, trades, and add landing/legal pages

- Major UI updates across dashboard, analytics, posts, trades, settings
- New landing page, robots/sitemap, contact/privacy/terms pages
- Updated globals.css with extensive styling and new landing.css
- Refactor signedRequest, realtime data hook, and dashboard store

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

lib/useRealtimeData.ts

@@ -16,9 +16,12 @@ interface Handlers {
 export function usePriceSocket(handlers: Handlers) {
   const wsRef = useRef<WebSocket | null>(null)
   const handlersRef = useRef(handlers)
+  const unmountedRef = useRef(false)
+  const reconnectTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null)
   handlersRef.current = handlers
 
   const connect = useCallback(() => {
+    if (unmountedRef.current) return
     const ws = new WebSocket(`${WS_URL}/ws/prices`)
     wsRef.current = ws
 
@@ -36,7 +39,10 @@ export function usePriceSocket(handlers: Handlers) {
     }
 
     ws.onclose = () => {
-      setTimeout(connect, 3000)
+      // Don't schedule a reconnect if the component already unmounted —
+      // otherwise we leak a socket per navigation forever.
+      if (unmountedRef.current) return
+      reconnectTimerRef.current = setTimeout(connect, 3000)
     }
 
     ws.onerror = () => {
@@ -45,8 +51,11 @@ export function usePriceSocket(handlers: Handlers) {
   }, [])
 
   useEffect(() => {
+    unmountedRef.current = false
     connect()
     return () => {
+      unmountedRef.current = true
+      if (reconnectTimerRef.current) clearTimeout(reconnectTimerRef.current)
       wsRef.current?.close()
     }
   }, [connect])