BitFun Ships Desktop Agent Runtime in Rust — Four-Mode Code Agent With Mobile QR Remote Control and Telegram Integration

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BitFun is a Rust + TypeScript desktop agent runtime built on Tauri with 300,000+ lines of vibe-coded source, featuring a four-mode Code Agent (Agentic, Plan, Debug, Review) plus a Cowork Agent for collaborative workflows. Its standout feature is mobile remote control via QR pairing through Telegram or Feishu bots, letting users send instructions and watch execution steps in real-time while agents work in the background. The project includes persistent memory, personality systems, and Computer Use capabilities, all open-source at 637 stars.