- Change all instances of AppState to reference the new state module across multiple files for consistency.
- Clean up imports in auth, books, index_jobs, libraries, pages, search, settings, thumbnails, and tokens modules.
- Simplify main.rs by removing unused code and organizing middleware and route handlers under the new handlers module.
- Add magic bytes validation for extracted CBR images
- Add hex dump for debugging invalid images
- Show first entries when listing CBR archive
- Remove unused structs and functions from settings.rs
- Add -y flag to unrar for auto-confirm
