Resolver gains SetCLIFlagAgent; DefaultAgent now layers CLIFlag above
EnvVar so doctor/info attribution renders the correct precedence chain
(CLIFlag overrides EnvVar overrides ConfigFile overrides Builtin).
ctask new --agent <type> writes agent.type into the new workspace's
task.yaml. Resolution and validation run before workspace.Create, so
--agent custom without a companion command refuses ("type custom
requires command") with no half-created workspace left on disk. The
deferred Phase 1 test TestCLIFlagOverridesEnvVar lands here.
--agent on resume/last/attach is unchanged (one-shot agent.command
override on the AgentSpec — Open Q 1).
typebasedio
a61f900c86