I need a developer to build a web-based voice assistant with an avatar. The assistant must answer user questions using a provided internal knowledge base (database/files) and stay strictly within that scope. It must speak in a local Arabic dialect style and support multilingual conversations. High-level requirements: Web UI with an avatar + voice conversation Backend API connected to a knowledge base (DB/files) Strict scope control (no answers beyond provided info) Multilingual support: Arabic, English, Urdu (voice + text) Basic logging and deployment guidance Preferred stack: .NET (C#) and/or Python (API) To apply: Please share similar work examples and a short proposal (architecture approach, timeline, and milestones).