- Changed the condition to determine selection absence by comparing start and end range instead of checking if text is empty.
- Ensures that a non-selection (where start and end range are the same) correctly triggers the absence of selection error.
- Applied this logic uniformly in comments, docstring, explain, fix, and refactor modules.
- Add feature to show README.md when no text is selected
- Modify all command and main modules to support this feature
- Remove 'input: required' from command.yml files for flexibility
