system stopped booting, cant write files, "No space left on device", even though I have ~40GB free

rebased from ublue kinoite to bazzite gnome, everything worked fine for a while, then flatpak stopped working, couldn't update because of no space left on device, even though I had around 40GB free, rebooted and I got stuck in the fedora loading screen (pictured, the loading loop icon eventually disappears and interestingly it had the fedora logo and not the new bazzite one i had seen the previous reboot) rebooted to my other boot slot that still had kinoite and i could make it into a tty, but sddm is not launching and i cant write any files (picture 2), my gf said she's seen this before and it's a panic state btrfs enters in when corrupt, is this true and is it something i can recover from without a reinstall