fix(manager_llm): handle coworker role name case/whitespace properly (#1820)

* fix(manager_llm): handle coworker role name case/whitespace properly

- Add .strip() to agent name and role comparisons in base_agent_tools.py
- Add test case for varied role name cases and whitespace
- Fix issue #1503 with manager LLM delegation

Co-Authored-By: Joe Moura <joao@crewai.com>

* fix(manager_llm): improve error handling and add debug logging

- Add debug logging for better observability
- Add sanitize_agent_name helper method
- Enhance error messages with more context
- Add parameterized tests for edge cases:
  - Embedded quotes
  - Trailing newlines
  - Multiple whitespace
  - Case variations
  - None values
- Improve error handling with specific exceptions

Co-Authored-By: Joe Moura <joao@crewai.com>

* style: fix import sorting in base_agent_tools and test_manager_llm_delegation

Co-Authored-By: Joe Moura <joao@crewai.com>

* fix(manager_llm): improve whitespace normalization in role name matching

Co-Authored-By: Joe Moura <joao@crewai.com>

* style: fix import sorting in base_agent_tools and test_manager_llm_delegation

Co-Authored-By: Joe Moura <joao@crewai.com>

* fix(manager_llm): add error message template for agent tool execution errors

Co-Authored-By: Joe Moura <joao@crewai.com>

* style: fix import sorting in test_manager_llm_delegation.py

Co-Authored-By: Joe Moura <joao@crewai.com>

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Joe Moura <joao@crewai.com>

tests/crew_test.py

@@ -391,6 +391,71 @@ def test_manager_agent_delegating_to_all_agents():
     )
 
 
+@pytest.mark.vcr(filter_headers=["authorization"])
+def test_manager_agent_delegates_with_varied_role_cases():
+    """
+    Test that the manager agent can delegate to agents regardless of case or whitespace variations in role names.
+    This test verifies the fix for issue #1503 where role matching was too strict.
+    """
+    # Create agents with varied case and whitespace in roles
+    researcher_spaced = Agent(
+        role=" Researcher ",  # Extra spaces
+        goal="Research with spaces in role",
+        backstory="A researcher with spaces in role name",
+        allow_delegation=False,
+    )
+    
+    writer_caps = Agent(
+        role="SENIOR WRITER",  # All caps
+        goal="Write with caps in role",
+        backstory="A writer with caps in role name",
+        allow_delegation=False,
+    )
+
+    task = Task(
+        description="Research and write about AI. The researcher should do the research, and the writer should write it up.",
+        expected_output="A well-researched article about AI.",
+        agent=researcher_spaced,  # Assign to researcher with spaces
+    )
+
+    crew = Crew(
+        agents=[researcher_spaced, writer_caps],
+        process=Process.hierarchical,
+        manager_llm="gpt-4o",
+        tasks=[task],
+    )
+
+    mock_task_output = TaskOutput(
+        description="Mock description",
+        raw="mocked output",
+        agent="mocked agent"
+    )
+    task.output = mock_task_output
+
+    with patch.object(Task, 'execute_sync', return_value=mock_task_output) as mock_execute_sync:
+        crew.kickoff()
+
+        # Verify execute_sync was called once
+        mock_execute_sync.assert_called_once()
+
+        # Get the tools argument from the call
+        _, kwargs = mock_execute_sync.call_args
+        tools = kwargs['tools']
+
+        # Verify the delegation tools were passed correctly and can handle case/whitespace variations
+        assert len(tools) == 2
+        
+        # Check delegation tool descriptions (should work despite case/whitespace differences)
+        delegation_tool = tools[0]
+        question_tool = tools[1]
+        
+        assert "Delegate a specific task to one of the following coworkers:" in delegation_tool.description
+        assert " Researcher " in delegation_tool.description or "SENIOR WRITER" in delegation_tool.description
+        
+        assert "Ask a specific question to one of the following coworkers:" in question_tool.description
+        assert " Researcher " in question_tool.description or "SENIOR WRITER" in question_tool.description
+
+
 @pytest.mark.vcr(filter_headers=["authorization"])
 def test_crew_with_delegating_agents():
     tasks = [