The spec (docs/reference/actor_cli.md) defines the synopsis for
`agents actor add` as:
agents actor add <NAME> --config <FILE> [--update] [--unsafe]
[--set-default] [--option key=value] [--format FORMAT]
The implementation was missing the required <NAME> positional argument,
silently reading the actor name from the config file's `name` field
instead. This deviates from the spec and breaks the expected CLI UX.
Changes:
- Add `name` as a required positional Argument to the `add` command
- Update docstring to match spec synopsis exactly
- The positional NAME takes precedence over any `name` field in config
- Remove the now-redundant config-file name validation (name comes from CLI)
- Add Behave BDD feature + steps for the NAME positional argument (TDD)
- Update all existing Behave step invocations to pass NAME positional arg
- Update Robot Framework helpers to pass NAME positional arg
ISSUES CLOSED: #2905