Simplify module cleanup paths

internal/modules/generic/chunk/units/chunker_test.go

@@ -121,6 +121,22 @@ func TestPlanRejectsInvalidOptions(t *testing.T) {
 	}
 }
 
+func TestDecodeOptionsRejectsNonNativeIntegers(t *testing.T) {
+	for _, value := range []any{
+		int8(2), int16(2), int32(2), int64(2),
+		uint(2), uint8(2), uint16(2), uint32(2), uint64(2),
+		float32(2), float64(2), json.Number("2"),
+	} {
+		_, err := DecodeOptions(map[string]any{"max_units": value})
+		if err == nil {
+			t.Fatalf("DecodeOptions(max_units: %T) error = nil, want error", value)
+		}
+		if !strings.Contains(err.Error(), "max_units must be an integer") {
+			t.Fatalf("DecodeOptions(max_units: %T) error = %q, want integer type error", value, err)
+		}
+	}
+}
+
 func TestPlanRejectsEmptySource(t *testing.T) {
 	doc := testSource(1)
 	doc.Units = nil