Antigravity Multi-Agent Bridge

Adds multi-agent capabilities to Google's Antigravity IDE, enabling autonomous task delegation and agent spawning.

Extends Google's Antigravity IDE with multi-agent capabilities via a Model Context Protocol integration, letting an MCP client spawn new chats, send prompts to the active chat, and retrieve chat state. It runs as a local stdio proxy that communicates with Antigravity over a local HTTP server and the Chrome DevTools Protocol. The extension relies on undocumented, internal Antigravity IDE features and is explicitly experimental.