Add a warning in doc search

app.py

@@ -172,6 +172,7 @@ with gr.Blocks() as demo:
                                 <li>If you query for two or more clauses, and a clause has more than {MAX_CLAUSE_FREQ_FAST_APPROX_PER_SHARD} matches (per shard), we will search within a random subset of all documents containing that clause.</li>
                                 <li>The number of found documents may contain duplicates (e.g., if a document contains your query term twice, it may be counted twice).</li>
                             </ul>
+                            <p style="font-size: 16px;">❗️WARNING: Corpus may contain problematic contents such as PII, toxicity, hate speech, and NSFW text. This tool is merely presenting selected text from the corpus, without any post-hoc safety filtering. It is NOT creating new text. This is a research prototype through which we can expose and examine existing problems with massive text corpora. Please use with caution. Don't be evil :)</p>
                         ''')
                 with gr.Row():
                     with gr.Column(scale=1):