🎨 Improve code readability by reformatting and updating function definitions and comments

code/websites/pokedex.online/.env.example

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+# Challonge API Configuration
+# Get your API key from: https://challonge.com/settings/developer
+VITE_CHALLONGE_API_KEY=your_api_key_here
+
+# OAuth Configuration (optional - for development)
+# Register your app at: https://connect.challonge.com
+VITE_CHALLONGE_CLIENT_ID=your_oauth_client_id_here
+VITE_CHALLONGE_REDIRECT_URI=http://localhost:5173/oauth/callback
+
+# OAuth Proxy Backend (development - server-side only)
+# These are NOT browser-accessible (no VITE_ prefix)
+CLIENT_ID=your_oauth_client_id_here
+CLIENT_SECRET=your_oauth_client_secret_here
+OAUTH_PROXY_PORT=3001
+
+# Debug Mode (optional)
+# Set to 'true' to enable debug logging, or toggle in browser:
+# localStorage.setItem('DEBUG', '1')
+VITE_DEBUG=false
+
+# VITE_DEFAULT_TOURNAMENT_ID=
+
+# Application Configuration
+# VITE_APP_TITLE=Pokedex Online