added

app.py

@@ -57,7 +57,12 @@ def load_model():
     return processor, model
 
 def extract_json_from_llm_output(llm_result):
-    match = re.search(r'\{.*\}', llm_result, re.DOTALL)
+    # Try to extract JSON from a code block first (```json ... ``` or ``` ... ```)
+    code_block_match = re.search(r"```(?:json)?\s*({[\s\S]*?})\s*```", llm_result, re.IGNORECASE)
+    if code_block_match:
+        return code_block_match.group(1)
+    # Fallback: extract first {...} block
+    match = re.search(r'\{[\s\S]*\}', llm_result)
     if match:
         return match.group(0)
     return None