diff --git a/internal/contract/enums/enums_test.go b/internal/contract/enums/enums_test.go
index 0768c24..6738dbb 100644
--- a/internal/contract/enums/enums_test.go
+++ b/internal/contract/enums/enums_test.go
@@ -18,6 +18,7 @@ import (
 	"regexp"
 	"slices"
 	"sort"
+	"strings"
 	"testing"
 
 	"git.yeij.top/AskaEth/Cyrene_v2/internal/contract/enums"
@@ -128,23 +129,52 @@ func TestMoodTableMatchesEmotionBuiltins(t *testing.T) {
 	}
 }
 
+// frontendTypesDir 是前端共享类型的目录：barrel（lib/types.ts）+ 按域拆分的
+// lib/types/*.ts（阶段 0 的结构拆分，方案见 DevDocs/audit/_plan.md）。
+const frontendTypesDir = "../../../frontend/web/src/lib/types"
+
+// readFrontendTypes 汇总 barrel 与目录下全部 .ts 的源码。按目录收集而不是写死单个文件，
+// 是为了让「MODES 数组住在哪个文件」不成为本测试的耦合点——以后再搬一次也不用改它。
+// barrel 缺失（backend-only checkout）时返回 fs.ErrNotExist，由调用方跳过。
+func readFrontendTypes() ([]byte, error) {
+	paths := []string{frontendTypesDir + ".ts"}
+	entries, err := os.ReadDir(frontendTypesDir)
+	if err != nil && !errors.Is(err, fs.ErrNotExist) {
+		return nil, err
+	}
+	for _, e := range entries {
+		if !e.IsDir() && strings.HasSuffix(e.Name(), ".ts") {
+			paths = append(paths, frontendTypesDir+"/"+e.Name())
+		}
+	}
+	var all []byte
+	for _, p := range paths {
+		raw, err := os.ReadFile(p)
+		if err != nil {
+			return nil, err
+		}
+		all = append(all, raw...)
+		all = append(all, '\n')
+	}
+	return all, nil
+}
+
 // TestModeTableMatchesFrontendModes asserts the mode table matches the frontend's
-// Mode union / MODES array (frontend/web/src/lib/types.ts), the only code-level
-// definition of the nine modes. This is the cross-language drift guard: adding a
-// mode on either side without the other fails here.
+// Mode union / MODES array, the only code-level definition of the nine modes. This
+// is the cross-language drift guard: adding a mode on either side without the other
+// fails here.
 func TestModeTableMatchesFrontendModes(t *testing.T) {
 	t.Parallel()
-	const typesPath = "../../../frontend/web/src/lib/types.ts"
-	raw, err := os.ReadFile(typesPath)
+	raw, err := readFrontendTypes()
 	if err != nil {
 		if errors.Is(err, fs.ErrNotExist) {
-			t.Skipf("%s not present (backend-only checkout)", typesPath)
+			t.Skipf("%s not present (backend-only checkout)", frontendTypesDir)
 		}
-		t.Fatalf("read %s: %v", typesPath, err)
+		t.Fatalf("read frontend types: %v", err)
 	}
 	block := regexp.MustCompile(`(?s)export const MODES\s*:[^=]*=\s*\[(.*?)\]`).FindSubmatch(raw)
 	if block == nil {
-		t.Fatalf("MODES array not found in %s", typesPath)
+		t.Fatalf("MODES array not found under %s", frontendTypesDir)
 	}
 	quoted := regexp.MustCompile(`"([^"]+)"`).FindAllStringSubmatch(string(block[1]), -1)
 	frontend := make([]string, 0, len(quoted))