LiteAgent w/ Guardrail (#2982)

* feat: add guardrail support for Agents when using direct kickoff calls

* refactor: expose guardrail func in a proper utils file

* fix: resolve Self import on python 3.10

src/crewai/tasks/guardrail_result.py

@@ -1,56 +0,0 @@
-"""
-Module for handling task guardrail validation results.
-
-This module provides the GuardrailResult class which standardizes
-the way task guardrails return their validation results.
-"""
-
-from typing import Any, Optional, Tuple, Union
-
-from pydantic import BaseModel, field_validator
-
-
-class GuardrailResult(BaseModel):
-    """Result from a task guardrail execution.
-
-    This class standardizes the return format of task guardrails,
-    converting tuple responses into a structured format that can
-    be easily handled by the task execution system.
-
-    Attributes:
-        success (bool): Whether the guardrail validation passed
-        result (Any, optional): The validated/transformed result if successful
-        error (str, optional): Error message if validation failed
-    """
-    success: bool
-    result: Optional[Any] = None
-    error: Optional[str] = None
-
-    @field_validator("result", "error")
-    @classmethod
-    def validate_result_error_exclusivity(cls, v: Any, info) -> Any:
-        values = info.data
-        if "success" in values:
-            if values["success"] and v and "error" in values and values["error"]:
-                raise ValueError("Cannot have both result and error when success is True")
-            if not values["success"] and v and "result" in values and values["result"]:
-                raise ValueError("Cannot have both result and error when success is False")
-        return v
-
-    @classmethod
-    def from_tuple(cls, result: Tuple[bool, Union[Any, str]]) -> "GuardrailResult":
-        """Create a GuardrailResult from a validation tuple.
-
-        Args:
-            result: A tuple of (success, data) where data is either
-                   the validated result or error message.
-
-        Returns:
-            GuardrailResult: A new instance with the tuple data.
-        """
-        success, data = result
-        return cls(
-            success=success,
-            result=data if success else None,
-            error=data if not success else None
-        )