Enhance run_crew.py with improved logging, error handling, and tests

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

tests/cli/test_run_crew.py

@@ -10,7 +10,14 @@ from crewai.cli.run_crew import CrewType, execute_command
 
 
 def test_execute_command_adds_src_to_path():
-    """Test that execute_command adds the src directory to sys.path."""
+    """
+    Test that execute_command correctly modifies sys.path.
+
+    Ensures:
+    1. src directory is added to sys.path when it exists.
+    2. Original sys.path is preserved for other entries.
+    3. Command execution proceeds correctly.
+    """
     # Create a temporary directory with a src subdirectory
     with tempfile.TemporaryDirectory() as temp_dir:
         temp_path = Path(temp_dir)