Update app.py

app.py

@@ -211,7 +211,7 @@ def build_slack_message(results: dict, evals: dict, run_time: str) -> str:
     total = len(results)
     date_str = datetime.datetime.now(IST).strftime("%d %b %Y")
     lines = []
-    lines.append(f"*EOD Report Summary — {date_str}*")
+    lines.append(f"<!channel> *EOD Report Summary — {date_str}*")
     lines.append(f"_{total} interns | Deadline: 11:00 PM IST_")
     lines.append("")