// Package llm defines majordomo's canonical, provider-agnostic contract:
// messages and content parts, requests and responses, tools, capabilities,
// streaming, and the Model/Provider interfaces every backend implements.
//
// Why: provider implementations (openai, anthropic, google, ollama, foreman,
// and any client-defined backend) must share one vocabulary without importing
// each other or the root package. This package is the dependency leaf — it
// imports nothing else in the module, and everything else imports it.
//
// Most consumers never import this package directly: the root majordomo
// package re-exports every type here via type aliases.
package llm