I have also discovered the magic 🧙🏻♂️ and added it into a citation lookup app I just shared. https://sutta.readingfaithfully.org/
If you enter dhp184 it will give you the link https://suttacentral.net/dhp179-196/en/sujato#dhp184:1 (as well as direct links to translations on other sites.
However I don’t know if this id system is officially supported, meaning that it will be around for the long term. If the links did get updated on the index pages mentioned, at least they would fail gracefully if the ids stopped working.