Raise request form rate limit from 5/min to 60/min (booth shares one IP)

app.py

@@ -167,14 +167,14 @@ def index():
 
 
 @app.route('/request', methods=['GET', 'POST'])
-@limiter.limit("5 per minute")
+@limiter.limit("60 per minute")
 def request_form():
     """
     Public request form.
     GET  -> shows the form with the banner image, or a closed message if the booth is closed.
     POST -> validates the email, creates a database record, sends a
             confirmation email, and redirects to the thanks page.
-    Rate limited to 5 submissions per minute per IP.
+    Rate limited to 60 submissions per minute per IP (a shared booth IP means many visitors hit the same address).
     """
     if not get_booth_open():
         return render_template('closed.html')