I keep forgetting to design for the failure path, so my product is an accurate depiction of society, where everybody has a convenient excuse to not handle issues and the slightest problem ends up collapsing everything.

I see that my really log tag got eaten. What's the tag length limit?

(#at some point I added a global error event handler to a React app which would save global state to localStorage and reload the page)

One way is to never look as it as failure path but just another valid path that should have a valid result, like displaying a message.

Think of the user and any external calls as an enemy looking for a gap in your defenses and make it a game to catch all attempts to breach ;)