Enhanced IDE Selection Integration

The IDE integration now supports a new "Add to Prompt" capability. When working with code selections from your IDE:

• Automatic prompt insertion: IDE selections can now be automatically added to your prompt input with the new addToPrompt parameter
• Improved selection handling: The system now distinguishes between viewing selections and actively including them in prompts

Example usage: When you select code in your IDE and trigger the "Add to Prompt" action, the selected code will be automatically inserted at your cursor position in the Claude Code prompt, formatted with file context.