Description

This PR includes several improvements to development setup and platform handling across the codebase:

Development Setup

• Updates the symlink script to target the project root instead of just the plugin directory
• Improves path resolution and error messages for development setup
• Adds clearer documentation for setting up local development

Platform Handling

• Switches to using Obsidian's built-in Platform utilities instead of Node's process.platform
• Provides more reliable platform detection in the Obsidian context
• Simplifies platform-specific code paths

Code Cleanup

• Removes unused isClaudeDesktopInstalled() function as Claude config is handled elsewhere
• Improves variable naming and path handling throughout
• Better separation of concerns in platform-specific code

Testing

• Tested symlink creation on Windows
• Tested symlink creation on MacOS
• Verified folder opening works on all platforms
• Confirmed plugin installation still works correctly

These changes make the codebase more maintainable and provide a better development experience while simplifying platform-specific handling.