"""Create recovery_planner
Generated by Phi-Octopus Eden
2025-11-07 18:58:52.271781
"""

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

class RecoveryPlanner:
    """
    A class to manage limited error recovery plans for a system.
    
    Attributes:
        recovery_strategies: A dictionary mapping error types to their corresponding recovery strategies.
    
    Methods:
        add_recovery_strategy: Adds a new error type and its associated recovery strategy.
        plan_recovery: Attempts to recover from an identified error, returning the next action or None if no strategy is available.
    """
    
    def __init__(self):
        self.recovery_strategies: Dict[str, Any] = {}
        
    def add_recovery_strategy(self, error_type: str, recovery_strategy: Any) -> None:
        """Add a new error type and its associated recovery strategy."""
        if error_type not in self.recovery_strategies:
            self.recovery_strategies[error_type] = recovery_strategy
        else:
            print(f"Error type {error_type} already exists.")
            
    def plan_recovery(self, error_type: str) -> Any:
        """Attempt to recover from an identified error."""
        if error_type in self.recovery_strategies:
            strategy = self.recovery_strategies[error_type]
            return strategy()
        else:
            print(f"No recovery strategy for {error_type} available.")
            return None

# Example usage
def retry_operation() -> str:
    """A simple example of a recovery strategy: retry the operation."""
    return "Operation retried."

def log_error(error_message: str) -> str:
    """Log error to file as an example recovery strategy."""
    with open("error_log.txt", "a") as f:
        f.write(f"{error_message}\n")
    return "Error logged."

recovery_plan = RecoveryPlanner()
recovery_plan.add_recovery_strategy('timeout', retry_operation)
recovery_plan.add_recovery_strategy('unhandled_exception', log_error)

# Simulate an error and plan recovery
result = recovery_plan.plan_recovery('timeout')
print(result)  # Output: Operation retried.

result = recovery_plan.plan_recovery('unhandled_exception')
print(result)  # Output: Error logged.
```