Update llm library web interface

api/app/schemas.py

@@ -153,6 +153,22 @@ class LLMModelTestResponse(BaseModel):
     message: Optional[str] = None
 
 
+class LLMPreviewRequest(BaseModel):
+    message: str
+    system_prompt: Optional[str] = None
+    max_tokens: Optional[int] = None
+    temperature: Optional[float] = None
+    api_key: Optional[str] = None
+
+
+class LLMPreviewResponse(BaseModel):
+    success: bool
+    reply: Optional[str] = None
+    usage: Optional[dict] = None
+    latency_ms: Optional[int] = None
+    error: Optional[str] = None
+
+
 # ============ ASR Model ============
 class ASRModelBase(BaseModel):
     name: str