bingo: move the public site to the datacenterbingo repo

The public card now runs from its own repo and container, with a
Traefik router of its own. Drop BingoWeb, its views, icons, Host
dispatch and the asxpio-bingo router here; keep the admin, the schema
and the photo pipeline, which the new site reads through a read-only
role.

BINGO_HOST stays for IndexNow pings and the admin's site link.

Assisted-by: Claude:opus-5

config.ru

@@ -1,20 +1,6 @@
 require 'sinatra/base'
 require './asxpio.rb'
-require './bingo_web.rb'
 
-# One process, two sites: the bingo hosts get BingoWeb, everything else
-# asxp.io. BINGO_HOST is canonical (www. redirects to it); BINGO_ALT_HOST
-# serves the same card, e.g. while the canonical domain's DNS settles.
-asxpio      = AsxpioWeb.new
-bingo       = BingoWeb.new
-bingo_host  = ENV['BINGO_HOST']
-bingo_hosts = BingoWeb::HOSTS
-
-run lambda { |env|
-  req = Rack::Request.new(env)
-  if bingo_host && req.host == "www.#{bingo_host}"
-    [301, { 'location' => "https://#{bingo_host}#{req.fullpath}" }, []]
-  else
-    (bingo_hosts.include?(req.host) ? bingo : asxpio).call(env)
-  end
-}
+# The public bingo site moved to its own repo/container (datacenterbingo);
+# only its admin (/admin/bingo) is still served here.
+run AsxpioWeb.new