add hints for registration on the contact page

src/libs/util.ts

@@ -13,6 +13,11 @@ export const isGlobalUri = (uri: string) => {
   return uri && uri.match(new RegExp(/^[A-Za-z][A-Za-z0-9+.-]+:/));
 };
 
+// If you edit this, check that the numbers still line up on the side in the alert (on mobile, too),
+// and make sure they can take all actions while the notification shows.
+export const ONBOARD_MESSAGE =
+  "1) Check that they've entered their name. 2) Go to the scanning page: use the Contacts page and click on the QR icon at the top, and then scan and register them. 3) Have them go to that page and scan you.";
+
 export const sendTestThroughPushServer = async (
   subscription: PushSubscription,
   skipFilter: boolean,