fix: use messages format for SFTTrainer (system/user/assistant)

training/scripts/prepare_dataset.py

@@ -36,16 +36,20 @@ def prepare_dataset(input_file, output_file, test_size=0.05):
         
         output_text = ex['output']
         
-        # Create conversation format
+        # Create chat format for SFTTrainer
         conversation = {
-            "conversations": [
+            "messages": [
                 {
-                    "from": "human",
-                    "value": f"Generate a Cyron summary for this task:\n\n{instruction}\n\n{input_text}"
+                    "role": "system",
+                    "content": "You are a helpful coding assistant that generates project summaries."
                 },
                 {
-                    "from": "gpt",
-                    "value": output_text
+                    "role": "user",
+                    "content": f"Generate a summary for this task:\n\n{instruction}\n\n{input_text}"
+                },
+                {
+                    "role": "assistant",
+                    "content": output_text
                 }
             ]
         }