TOML Multiline String
Emit as a TOML multiline basic string: triple-double-quoted, with embedded `"""` sequences escaped. Used today for the agent `developer_instructions` TOML key, which is long prose.
Emit as a TOML multiline basic string: triple-double-quoted, with embedded `"""` sequences escaped. Used today for the agent `developer_instructions` TOML key, which is long prose.