Refactor localization files and remove Aliyun references

qwen3-tts-backend/schemas/voice_design.py

@@ -5,8 +5,6 @@ from pydantic import BaseModel, Field
 class VoiceDesignCreate(BaseModel):
     name: str = Field(..., min_length=1, max_length=100)
     instruct: str = Field(..., min_length=1)
-    backend_type: str = Field(..., pattern="^(local|aliyun)$")
-    aliyun_voice_id: Optional[str] = None
     meta_data: Optional[Dict[str, Any]] = None
     preview_text: Optional[str] = None
 
@@ -14,9 +12,7 @@ class VoiceDesignResponse(BaseModel):
     id: int
     user_id: int
     name: str
-    backend_type: str
     instruct: str
-    aliyun_voice_id: Optional[str]
     meta_data: Optional[Dict[str, Any]]
     preview_text: Optional[str]
     ref_audio_path: Optional[str] = None