chore: improve typing and consolidate utilities

- add type annotations across utility modules  
- refactor printer system, agent utils, and imports for consistency  
- remove unused modules, constants, and redundant patterns  
- improve runtime type checks, exception handling, and guardrail validation  
- standardize warning suppression and logging utilities  
- fix llm typing, threading/typing edge cases, and test behavior

src/crewai/utilities/config.py

@@ -1,20 +1,19 @@
-from typing import Any, Dict, Type
+from typing import Any
 
 from pydantic import BaseModel
 
 
 def process_config(
-    values: Dict[str, Any], model_class: Type[BaseModel]
-) -> Dict[str, Any]:
-    """
-    Process the config dictionary and update the values accordingly.
+    values: dict[str, Any], model_class: type[BaseModel]
+) -> dict[str, Any]:
+    """Process the config dictionary and update the values accordingly.
 
     Args:
-        values (Dict[str, Any]): The dictionary of values to update.
-        model_class (Type[BaseModel]): The Pydantic model class to reference for field validation.
+        values: The dictionary of values to update.
+        model_class: The Pydantic model class to reference for field validation.
 
     Returns:
-        Dict[str, Any]: The updated values dictionary.
+        The updated values dictionary.
     """
     config = values.get("config", {})
     if not config: