style(actor): fix ruff format violations in actor-run fix

Apply ruff format to resolve CI lint failures:
- Remove extra blank lines in _resolve_actor.py
- Reformat long string literal in tdd_actor_run_response_steps.py

ISSUES CLOSED: #10861

features/steps/tdd_actor_run_response_steps.py

@@ -43,7 +43,9 @@ def step_given_actor_with_yaml_text(context: Context) -> None:
     """Set up a mock actor that already has yaml_text."""
     mock_actor = MagicMock()
     mock_actor.name = "local/my-custom-actor"
-    mock_actor.yaml_text = "name: local/my-custom-actor\ntype: llm\nprovider: openai\nmodel: gpt-4\n"
+    mock_actor.yaml_text = (
+        "name: local/my-custom-actor\ntype: llm\nprovider: openai\nmodel: gpt-4\n"
+    )
     mock_actor.config_blob = None
     mock_registry = MagicMock()
     mock_registry.get.return_value = mock_actor

src/cleveragents/cli/commands/_resolve_actor.py

@@ -53,8 +53,6 @@ def _sanitize_name(name: str) -> str:
     return "".join(c for c in name if c.isprintable())
 
 
-
-
 def _synthesize_llm_yaml(actor_name: str, config_blob: dict[str, Any]) -> str:
     """Synthesize a v3 type: llm YAML from a built-in actor config blob.