* refactor: enhance insertGroups and insertContentTool for better handling of insertion operations
* refactor: simplify insert_content tool
- Remove operations-based implementation in favor of single line insertion
- Update parameters from operations to line and content
- Simplify insertion logic and error handling
- Update tool description and documentation
- Remove XML parsing for operations
- Clean up code and improve error messages
* refactor: remove insert_content experiment and related tests
* Remove the append_to_file tool
* Improvements to chat row and instructions
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Co-authored-by: Matt Rubens <mrubens@users.noreply.github.com>
