Almost everything works like intended. URLs open directly in Zammad as intended.
We use Zulip as our chat and there it can linkify a text like #10123 to an URL. However I cannot use the URL https://Zammad/#ticket/zoom/10123 because internally the URL https://Zammad/#ticket/zoom/125 is needed. I worked around that by using the URL https://Zammad/#search/number%3A10123. That is not exactly related to your addon package though.