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>

next.config.mjs

@@ -5,6 +5,14 @@ const withNextIntl = createNextIntlPlugin('./i18n.ts')
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,
+  webpack: (config) => {
+    config.resolve.fallback = {
+      ...config.resolve.fallback,
+      '@react-native-async-storage/async-storage': false,
+      'pino-pretty': false,
+    }
+    return config
+  },
 }
 
 export default withNextIntl(nextConfig)