"""Create recovery_planner
Generated by Phi-Octopus Eden
2025-11-06 14:13:02.042751
"""

```python
from typing import Any, Dict, List


class RecoveryPlanner:
    """
    A class for creating a recovery plan that helps in handling limited error scenarios.
    
    Attributes:
        errors: A dictionary to store information about encountered errors and their solutions.
    """

    def __init__(self):
        self.errors = {}

    def add_error(self, error_code: str, description: str, solution: Any) -> None:
        """
        Add an error code with its corresponding description and solution.

        Args:
            error_code (str): A unique identifier for the error.
            description (str): A detailed description of the error.
            solution (Any): The solution or steps to recover from the error.

        Returns:
            None
        """
        self.errors[error_code] = {"description": description, "solution": solution}

    def retrieve_solution(self, error_code: str) -> Any:
        """
        Retrieve the solution for a specific error code.

        Args:
            error_code (str): The unique identifier of the error to find the solution for.

        Returns:
            Any: The recovery steps or solution associated with the provided error code.
                 Returns None if no such error is found.
        """
        return self.errors.get(error_code, {}).get("solution", None)

    def list_errors(self) -> List[Dict[str, Any]]:
        """
        Return a list of all errors and their descriptions.

        Returns:
            List[Dict[str, Any]]: A list containing dictionaries with error codes and their descriptions.
        """
        return [{"error_code": code, "description": info["description"]} for code, info in self.errors.items()]


# Example usage
def main():
    planner = RecoveryPlanner()
    
    # Adding errors
    planner.add_error("E001", "Failed to connect to database", "Check network connection and credentials.")
    planner.add_error("E002", "Invalid user input detected", "Implement input validation routines.")
    planner.add_error("E003", "Timeout during API request", "Increase the timeout duration or optimize API calls.")

    # Retrieving a solution
    print(planner.retrieve_solution("E001"))  # Output: Check network connection and credentials.

    # Listing all errors
    for error in planner.list_errors():
        print(f"Error Code: {error['error_code']}, Description: {error['description']}")

if __name__ == "__main__":
    main()
```

This code creates a `RecoveryPlanner` class that allows adding, retrieving, and listing errors with their solutions. It includes an example usage in the `main()` function.