feat: Implement prepare-and-create endpoint for voice design creation and update related API and frontend logic

qwen3-tts-frontend/src/components/tts/VoiceDesignForm.tsx

@@ -145,28 +145,27 @@ const VoiceDesignForm = forwardRef<VoiceDesignFormHandle>((_props, ref) => {
       return
     }
 
+    const backend = preferences?.default_backend || 'local'
+    const text = watch('text')
+    const designData = {
+      name: saveDesignName,
+      instruct: instruct,
+      backend_type: backend,
+      preview_text: text || `${saveDesignName}的声音`
+    }
+
     try {
-      const backend = preferences?.default_backend || 'local'
-      const text = watch('text')
-      const design = await voiceDesignApi.create({
-        name: saveDesignName,
-        instruct: instruct,
-        backend_type: backend,
-        preview_text: text || `${saveDesignName}的声音`
-      })
-
-      toast.success(t('designSaved'))
-
       if (backend === 'local') {
         setIsPreparing(true)
         try {
-          await voiceDesignApi.prepareClone(design.id)
-          toast.success(t('clonePrepared'))
-        } catch (error) {
-          toast.error(t('clonePrepareFailed'))
+          await voiceDesignApi.prepareAndCreate(designData)
+          toast.success(t('designSaved'))
         } finally {
           setIsPreparing(false)
         }
+      } else {
+        await voiceDesignApi.create(designData)
+        toast.success(t('designSaved'))
       }
 
       setShowSaveDialog(false)

qwen3-tts-frontend/src/lib/api.ts

@@ -432,6 +432,14 @@ export const voiceDesignApi = {
     return response.data
   },
 
+  prepareAndCreate: async (data: VoiceDesignCreate): Promise<VoiceDesign> => {
+    const response = await apiClient.post<VoiceDesign>(
+      API_ENDPOINTS.VOICE_DESIGNS.PREPARE_AND_CREATE,
+      data
+    )
+    return response.data
+  },
+
   prepareClone: async (id: number): Promise<{ message: string; cache_id: number; ref_text: string }> => {
     const response = await apiClient.post<{ message: string; cache_id: number; ref_text: string }>(
       API_ENDPOINTS.VOICE_DESIGNS.PREPARE_CLONE(id)

qwen3-tts-frontend/src/lib/constants.ts

@@ -30,6 +30,7 @@ export const API_ENDPOINTS = {
   VOICE_DESIGNS: {
     LIST: '/voice-designs',
     CREATE: '/voice-designs',
+    PREPARE_AND_CREATE: '/voice-designs/prepare-and-create',
     PREPARE_CLONE: (id: number) => `/voice-designs/${id}/prepare-clone`,
   },
 } as const