this lab forked without the correct application.rb file content -or- the lab instructions / content are missing.
It required i contact AAQ and request help.
the solution was for AAQ rep to give me the missing array content.

Susan Renée Sims

In the solution I don't see a new @@cart array or /cart and /add routes

Please see my repo for this lab:

https://github.com/WilliamBarela/rack-dynamic-routes-lab-v-000

It contains updated rpsec tests to ensure that requests which are not exclusively /items/ do not pass, e.g.:
http://localhost:9292/iiiiitems/
http://localhost:9292/itemssss/

The above requests should 404, but right now they just go to "item not found" because "items" is matched by the current regex. By including word boundaries (/\bitems\b/) to the regex, this can be solved.