ui: Paper card default URL -> arxiv abstract

app.py

@@ -32,7 +32,7 @@ DEFAULT_MODEL = QUEST_MODEL_ID
 # Internal defaults. Search budget is no longer user-tunable.
 DEFAULT_MAX_SEARCH_RESULTS = 10
 
-PAPER_URL = os.getenv("PAPER_URL", "https://osu-nlp-group.github.io/QUEST/")
+PAPER_URL = os.getenv("PAPER_URL", "https://arxiv.org/abs/2605.24218")
 CODE_URL = os.getenv("CODE_URL", "https://github.com/OSU-NLP-Group/QUEST")
 DATASET_URL = os.getenv("DATASET_URL", "https://huggingface.co/collections/osunlp/quest")
 MODEL_URL = os.getenv("MODEL_URL", "https://huggingface.co/osunlp/QUEST-35B-RL")