feat: Add CHORUS teaser website with mobile-responsive design

- Created complete Next.js 15 teaser website with CHORUS brand styling
- Implemented mobile-responsive 3D logo (128px mobile, 512px desktop)
- Added proper Exo font loading via Next.js Google Fonts for iOS/Chrome compatibility
- Built comprehensive early access form with GDPR compliance and rate limiting
- Integrated PostgreSQL database with complete schema for lead capture
- Added scroll indicators that auto-hide when scrolling begins
- Optimized mobile modal forms with proper scrolling and submit button access
- Deployed via Docker Swarm with Traefik SSL termination at chorus.services
- Includes database migrations, consent tracking, and email notifications

🤖 Generated with [Claude Code](https://claude.ai/code)

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

modules/teaser/components/ThemeToggle.tsx

@@ -0,0 +1,43 @@
+'use client'
+
+import React, { useState, useEffect } from 'react'
+
+export default function ThemeToggle() {
+  const [theme, setTheme] = useState<'light' | 'dark'>('dark')
+
+  useEffect(() => {
+    const isDark = document.documentElement.classList.contains('dark')
+    setTheme(isDark ? 'dark' : 'light')
+  }, [])
+
+  const toggleTheme = () => {
+    const newTheme = theme === 'dark' ? 'light' : 'dark'
+    setTheme(newTheme)
+    
+    if (newTheme === 'dark') {
+      document.documentElement.classList.add('dark')
+    } else {
+      document.documentElement.classList.remove('dark')
+    }
+  }
+
+  return (
+    <button 
+      onClick={toggleTheme}
+      className="fixed top-chorus-lg right-chorus-lg z-50 p-chorus-sm hover:bg-black/10 dark:hover:bg-white/10 transition-colors rounded-lg backdrop-blur-sm bg-white/20 dark:bg-black/20 border border-white/30 dark:border-white/20"
+      aria-label="Toggle theme"
+    >
+      {theme === 'dark' ? (
+        // Sun icon for switching to light mode
+        <svg className="w-6 h-6 text-white" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z" />
+        </svg>
+      ) : (
+        // Moon icon for switching to dark mode
+        <svg className="w-6 h-6 text-carbon-950" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z" />
+        </svg>
+      )}
+    </button>
+  )
+}