Guide for using @moeru/eventa — a transport-aware event library powering ergonomic RPC and streaming flows. Use this skill whenever the user imports from '@moeru/eventa', mentions eventa, needs cross-process/cross-thread event communication (Electron IPC, Web Workers, WebSocket, BroadcastChannel, EventEmitter, EventTarget, Worker Threads), wants to define type-safe events with RPC invoke patterns, needs streaming RPC (server-streaming, client-streaming, or bidirectional), or asks about transport-agnostic event abstractions. Also use when the user discusses alternatives to birpc or async-call-rpc.