//! A2A Protocol Implementation
//!
//! First-class support for the Agent-to-Agent (A2A) protocol, enabling
//! this agent to work as both a client and server in the A2A ecosystem.
//!
//! ## Transports
//! - **JSON-RPC** (default) — `server.rs` / `client.rs`
//! - **gRPC** — `grpc.rs` (tonic-based, compiled from `proto/a2a/v1/a2a.proto`)
/// Generated protobuf/tonic types from `proto/a2a/v1/a2a.proto`.
// Re-export commonly used types
pub use A2AClient;