@tdd_issue @tdd_issue_592 @tdd_issue_4176
Feature: TDD Issue #592 — actor list validation rejects multi-slash model names
  As a developer
  I want to verify that `agents actor list` raises a validation error when
  a provider has a model name containing `/` separators
  So that the bug is captured and will be caught by a regression test

  The root cause is that `ActorRegistry._actor_name()` builds actor names
  via `f"{provider}/{model}"`.  When a provider's default model already
  contains `/` (e.g. `anthropic/claude-sonnet-4-20250514`), the resulting
  name has 2+ slashes and `ActorService._normalize_name()` rejects it with
  `ValidationError("Actor names must include exactly one '/' separator")`.

  Scenario: Actor list with multi-slash model does not raise validation error
    Given an actor registry with a multi-slash model provider for tdd-actor-validation
    When I run actor list via the tdd-actor-validation CLI
    Then the tdd-actor-validation exit code should be 0
    And the tdd-actor-validation output should not contain "VALIDATION_FAILED"

  Scenario: Built-in actor names have exactly one slash separator
    Given an actor registry with a multi-slash model provider for tdd-actor-validation
    When I run actor list via the tdd-actor-validation CLI
    Then the tdd-actor-validation upserted actor name should contain exactly one slash

  Scenario: Actor list JSON format with multi-slash model succeeds
    Given an actor registry with a multi-slash model provider for tdd-actor-validation
    When I run actor list with format json via the tdd-actor-validation CLI
    Then the tdd-actor-validation exit code should be 0
    And the tdd-actor-validation output should be valid JSON