Add welcomebot-signups CLI to inspect signup-IP classification history

README.md

@@ -231,6 +231,7 @@ test toot.
 
 ```bash
 welcomebot-logs -f --abuse             # convenience CLI on admin (see bin/welcomebot-logs)
+welcomebot-signups --flagged           # signup-IP classification history (see bin/welcomebot-signups)
 docker compose logs -f welcomebot      # watch deliveries
 docker compose restart welcomebot      # after editing .env
 docker compose down && docker compose up -d --build   # redeploy after code change