Update app.py

app.py

@@ -410,7 +410,7 @@ class GeminiGrader:
             EXAMPLE_PAPER=example_paper_text
         )
         
-        prompt_with_essay = f"{GEMINI_PROMPT}\n{essay_text}"
+        prompt_with_essay = f"{final_prompt}\n{essay_text}"
         try:
             response = self.model.generate_content(prompt_with_essay)
             # Clean the response to ensure it's valid JSON