host

type Document interface {
	Read(context.Context) ([]byte, error)
	Update(context.Context, func([]byte) ([]byte, error)) error
}

type Host struct {
	// AgentDir is the global configuration root in the host's path namespace.
	AgentDir string
	// FS is the file port for tools, resources and session journals.
	FS harness.FileSystem
	// Exec runs processes; nil on platforms that cannot, which omits process tools.
	Exec harness.Shell
	// Store holds settings, credentials and model catalogs.
	Store Store
	// Env supplies ambient provider credentials and file probes; nil uses the
	// process environment.
	Env aiauth.AuthContext
	// Sessions persists session journals; nil keeps JSONL journals on FS under
	// AgentDir/sessions, the upstream harness layout.
	Sessions harness.SessionRepo
}

type Store interface {
	Document(path string) Document
}