- Fix rustfmt formatting in cache.rs, patches.rs, system.rs, routes.rs, main.rs - Add Default impl for PackageCacheState (clippy new_without_default) - Change apply_with_cache_retry generic bound from Fn to FnMut - Add mut to refresh_fn parameter for FnMut compatibility - Replace bool comparison with ! operator (clippy bool_comparison) - Update todo.md with completed status