update

backend/models.py

@@ -136,7 +136,17 @@ class ElementChatRequest(BaseModel):
 
 class ElementChatResponse(BaseModel):
     reply: str
-    element: ElementResponse
+    changes: list[ElementStyleChange] = []
+
+
+class ElementRefineRequest(BaseModel):
+    suggestion: ElementStyleChange
+    instruction: str = Field(min_length=1, max_length=2000)
+    provider: ProviderType = "claude"
+
+
+class ElementRefineResponse(BaseModel):
+    change: ElementStyleChange
 
 
 class ProgressUpdate(BaseModel):