fix: cub production recipe, serde_derive import, minor cleanup

- recipe: use cargo install for proper binary installation
- aur.rs: serde_derive for explicit derive path
- main.rs: final noconfirm/force flow cleanup

local/recipes/system/cub/source/cub-lib/src/aur.rs

@@ -1,4 +1,4 @@
-use serde::Deserialize;
+use serde_derive::Deserialize;
 
 use crate::error::CubError;