docs: update comments, docstrings, README, REVIEW, and env docs to match current features

templates/request.html

@@ -7,8 +7,9 @@
   <style>
     /*
       Customer-facing request page.
-      Designed to look fun and inviting on a convention booth tablet or phone.
-      Uses a gradient background, banner image, and a styled card form.
+      Designed for convention booth tablets/phones. Shows the banner image and
+      a styled card form for name, email, hobbies, facts, style, vocal gender,
+      and extra requests. Hidden when the booth is marked closed.
     */
     *{box-sizing:border-box;}
     body{