fix: submission id too long changed until sec

src/submission/submit.py

@@ -29,7 +29,7 @@ def add_new_eval(
 
     # Create a unique identifier for the submission
     uid = uuid.uuid4().hex[:6]
-    timestamp = datetime.now().isoformat()
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
     request_filename = f"{library_name.replace('/', '_')}_eval_request_{timestamp}_{uid}.json"
     
     # Stars count and license info from library_info if available