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-cli/src/main.rs

@@ -65,11 +65,31 @@ impl PackageCreator {
         output_path: &Path,
         secret_key_path: &Path,
     ) -> Result<(), CubError> {
-        cub::package::PackageCreator::create_from_stage(stage_dir, output_path, secret_key_path)
+        #[cfg(feature = "full")]
+        {
+            cub::package::PackageCreator::create_from_stage(stage_dir, output_path, secret_key_path)
+        }
+
+        #[cfg(not(feature = "full"))]
+        {
+            let _ = (stage_dir, output_path, secret_key_path);
+            Err(CubError::PackageNotFound(
+                "pkgar creation support is disabled in this build".into(),
+            ))
+        }
     }
 
     fn generate_package_toml(rbpkg: &RbPkgBuild) -> String {
-        cub::package::PackageCreator::generate_package_toml(rbpkg)
+        #[cfg(feature = "full")]
+        {
+            cub::package::PackageCreator::generate_package_toml(rbpkg)
+        }
+
+        #[cfg(not(feature = "full"))]
+        {
+            let _ = rbpkg;
+            String::new()
+        }
     }
 }