feat: 完善图像工作区与创作工具体验

tests/unit/language-detection.test.ts

@@ -1,20 +1,21 @@
 import { describe, expect, it } from 'vitest';
-import { resolveSupportedLanguage } from '../../shared/language';
+import { resolveSupportedLanguage, SUPPORTED_LANGUAGE_CODES } from '../../shared/language';
 
 describe('resolveSupportedLanguage', () => {
-  it('uses the base language for supported regional locales', () => {
+  it('exposes Chinese as the only supported UI language', () => {
+    expect(SUPPORTED_LANGUAGE_CODES).toEqual(['zh']);
     expect(resolveSupportedLanguage('zh-CN')).toBe('zh');
-    expect(resolveSupportedLanguage('ja_JP')).toBe('ja');
-    expect(resolveSupportedLanguage('en-US')).toBe('en');
   });
 
-  it('falls back to English for unsupported locales', () => {
-    expect(resolveSupportedLanguage('fr-FR')).toBe('en');
-    expect(resolveSupportedLanguage('ko')).toBe('en');
+  it('falls back to Chinese for every non-Chinese locale', () => {
+    expect(resolveSupportedLanguage('en-US')).toBe('zh');
+    expect(resolveSupportedLanguage('ja_JP')).toBe('zh');
+    expect(resolveSupportedLanguage('fr-FR')).toBe('zh');
+    expect(resolveSupportedLanguage('ko')).toBe('zh');
   });
 
-  it('falls back to English when locale is missing', () => {
-    expect(resolveSupportedLanguage('')).toBe('en');
-    expect(resolveSupportedLanguage(undefined)).toBe('en');
+  it('falls back to Chinese when locale is missing', () => {
+    expect(resolveSupportedLanguage('')).toBe('zh');
+    expect(resolveSupportedLanguage(undefined)).toBe('zh');
   });
 });