simplify icon caching and homepage item override

internal/utils/slices.go

@@ -18,3 +18,11 @@ func Intersect[T comparable, Slice ~[]T](slice1 Slice, slice2 Slice) Slice {
 
 	return result
 }
+
+// Slice returns a slice of the first n elements in slice like javascript's slice.
+func Slice[T any](slice []T, n int) []T {
+	if n >= len(slice) {
+		return slice
+	}
+	return slice[:n]
+}