Refactor localization files and remove Aliyun references

qwen3-tts-backend/api/voice_designs.py

@@ -33,9 +33,7 @@ def to_voice_design_response(design) -> VoiceDesignResponse:
         id=design.id,
         user_id=design.user_id,
         name=design.name,
-        backend_type=design.backend_type,
         instruct=design.instruct,
-        aliyun_voice_id=design.aliyun_voice_id,
         meta_data=meta_data,
         preview_text=design.preview_text,
         ref_audio_path=design.ref_audio_path,
@@ -58,8 +56,6 @@ async def save_voice_design(
             user_id=current_user.id,
             name=data.name,
             instruct=data.instruct,
-            backend_type=data.backend_type,
-            aliyun_voice_id=data.aliyun_voice_id,
             meta_data=data.meta_data,
             preview_text=data.preview_text
         )
@@ -153,7 +149,6 @@ async def prepare_and_create_voice_design(
             user_id=current_user.id,
             name=data.name,
             instruct=data.instruct,
-            backend_type="local",
             meta_data=data.meta_data,
             preview_text=data.preview_text,
             voice_cache_id=cache_id,
@@ -200,12 +195,6 @@ async def prepare_voice_clone_prompt(
     if not design:
         raise HTTPException(status_code=404, detail="Voice design not found")
 
-    if design.backend_type != "local":
-        raise HTTPException(
-            status_code=400,
-            detail="Voice clone prompt preparation is only supported for local backend"
-        )
-
     if not can_user_use_local_model(current_user):
         raise HTTPException(
             status_code=403,