fix test

src/i18n.test.ts

@@ -146,6 +146,10 @@ describe('i18n', () => {
     })
 
     it('should handle calling mergeCustomNodesI18n multiple times', async () => {
+      // Use fresh module instance to ensure clean state
+      vi.resetModules()
+      const { i18n, loadLocale, mergeCustomNodesI18n } = await import('./i18n')
+
       mergeCustomNodesI18n({
         zh: { plugin1: { name: '插件1' } }
       })

src/i18n.ts

@@ -163,6 +163,10 @@ export async function loadLocale(locale: string): Promise<void> {
  * and immediately merges data for already-loaded locales.
  */
 export function mergeCustomNodesI18n(i18nData: Record<string, any>): void {
+  // Clear existing data and replace with new data
+  for (const key of Object.keys(customNodesI18nData)) {
+    delete customNodesI18nData[key]
+  }
   Object.assign(customNodesI18nData, i18nData)
 
   for (const [locale, message] of Object.entries(i18nData)) {