Add ProjectData.json to .gitignore to prevent tracking user-specific project data

Enhance nullability and error handling in project files

Update README, project description, and setup instructions

Merge branch 'master' of https://github.com/PassivePicasso/Claudable

Update file double click to use View local functionality

Update README.md

Update screenshot

Add conversation export feature and update UI layout

Make sure web view are cleaned up

Fix using multiple browser environments

standardize namespace declarations

Add mermaid diagram view mode

Add markdown rendering and better syntax view

Add file and folder renaming

Further improve file watcher performance and consistency