feat: Add a self-checking mechanism for tool execution results; If the step execution fails or the self-check is not passed, an attempt will be made to re-execute. After multiple failed executions of the same step, switch to the alternative tool for execution. Update the descriptions of some tools/scenarios

feat: Add a self-checking mechanism for tool execution results; If the step execution fails or the self-check is not passed, an attempt will be made to re-execute. After multiple failed executions of the same step, switch to the alternative tool for execution. Update the descriptions of some tools/scenarios #849