Absolute path to the config JSON file. Must be a file, not a directory.
OptionalagentKey persistence under a stable alias regardless of agent.id. Use this
when the in-memory AgentConfig carries an ephemeral identifier (e.g.
a per-request tenant id, or a synthetic cli-agent) but on-disk storage
should be organized by a long-lived alias chosen by the operator.
OptionalautoCreate the parent directory (with mode 0o700) if it doesn't exist.
Default true — CLI users expect first-run to create ~/.adcp/.
OptionalfileFile mode for the config file when we create it. Default 0o600.
Options for createFileOAuthStorage.