Add Composio integration as a WASM tool (tools-src/composio/), providing
a single multiplexed tool with 4 actions: list, execute, connect, and
connected_accounts. Supports 250+ third-party apps via Composio's REST
API with WASM sandbox security (fuel metering, memory limits, network
allowlisting, host-injected credentials).
Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>