Sounds like it was the iOS bluetooth exploit being spammed in a public place. There are a few variations, one that’s a little annoying, and one that will lock up your phone until a hard reset - your experience sounds like the latter.
This exploit is broadcast to all devices in the area so, good news is that, no one was specifically targeting you. The -only- way to avoid this is to turn off Bluetooth via Settings.
As far as I know it’s impossible to remove the notifications on other peoples devices. That feature was specifically introduced to avoid using AirTags for stalking or tracking people without their knowledge.
Using a Kobo reader with Calibre & Calibre-web to serve the books.
Setup a shelf on web, create a sync token on web. Add token to the Kobo config, automatically syncs any books that are added to the shelf. This replaces the Kobo store api for syncing, but I don’t use it so no biggie for me.
Orion by Kagi. It is, afaik, are the only browser that isn’t just a re-skin of Safari.
‘94 GT here, not as exciting as older generations, but fun nonetheless. Drove that thing for multiple hundreds of thousands of miles. Had over 330k when it finally died.