Yeah, the tablet runs Fully Kiosk and I tried the same thing with the battery percentage thing and ran into the same issue, so I just simplified and made the automation time-based.
The tablet also likes to freeze a few times a day, so I also created an automation that toggles the smart plug power whenever HA loses connection to the tablet for more than 5 seconds, then toggles back to the original state at the start of the automation, which corrects the problem. Until the next time. But hey! It was only $60, so it’s fine.
Disk space is definitely an issue, but I think I’ve got my single user instance dialed in on a 2 vcpu/4gb/30GB RAM Hetzner VPS; a cron job that runs at the first of every month deletes pictrs files over 30 days old. Currently at 74%.
A lot of bean memes died the day that job first ran.