Antigravity 2.15.0 adds Remote Control, a session-scoped tunnel for controlling an active terminal from another device with unlimited headless run timeouts. Structured error output now appears as machine-readable AGY_ERROR JSON on stderr, making debugging easier. The prompt editor now supports word-wise navigation and full-screen artifact text selection for smoother editing. Custom agents can disable default prompt sections and tools, and the selected agent persists across reloads. Keyboard navigation adds Page Up, Page Down, Home, End and Escape keys for moving through conversations and speeds up sidebar switching.