no. ive skimmed through maybe 2 things overall but thats about it. i use too many apps to be able to audit them all and i dont have the proper skills to audit code anyway, and even if i did i would still have to re-audit after every update or every few years. its just not worth the effort

youre taking a chance whether you use closed or open source software, at least with open source there is the option to look through things yourself, and with a popular project theres going to be a bigger chance of others looking through it

wrap a nappy around them. that will help reduce any vibrations haha

raspberry pi’s arent the best option anyway since you need to add on a hat just to get some SATA ports. i think Odroid has some boards with sata connectors. zimaboard or zimablade are some other options off the top of my head

ive been using floccus for a few years now and no complaints

i havnt tried syncing tabs but i think its an option. what i do have is a one-way sync job for the tabs in each browser so i at least have a backup of them, and each browser has its own file, but i would imagine if you tried to sync the same file between multiple devices it would just get very messy at some point