- Add UUID validation in device_auth middleware for OPDS routes - Return 400 Bad Request for invalid device/book IDs instead of 401 - Remove redundant UUID validation from OPDS handlers (middleware handles it)
- Add UUID validation in device_auth middleware for OPDS routes - Return 400 Bad Request for invalid device/book IDs instead of 401 - Remove redundant UUID validation from OPDS handlers (middleware handles it)