I have a Flutter-based mobile browser app and I need an experienced developer to integrate a full proxy engine using Shadowsocks or V2Ray. 1. Add Shadowsocks/V2Ray Client SDK The browser currently has no built-in proxy tunneling. You must integrate an SS/V2Ray client library (SDK) that can read and activate ss:// configuration links. Create a dedicated VPN/ProxyService class inside the app for handling all proxy operations. 2. Dynamic Proxy API Fetching (from Admin Panel) The app must fetch Proxy API URL and API Secret Key dynamically from my existing admin panel. NO hardcoded URLs or keys inside the code. Fetch on app launch → store locally → use for proxy activation. 3. Conditional Activation Logic App loads websites normally first. If it detects blocking signs (DNS error, timeout, SSL error, HTTP 403/451, etc.): Call my Proxy API using the Secret Key. Get a fresh ss:// configuration from the server. Activate proxy tunnel through the new VPN/ProxyService class. Retry loading the blocked website automatically.