Confirms bad RAM (memtest86+ single-bit flips) as root cause of the
2026-06-24 Btrfs corruption incident, adds fedora-upgrade.md and other
pending docs, and gitignores the doc-hygiene state directory.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Chrome crashed repeatedly with SIGBUS on launch. Root cause was a
corrupt data block in ~/.config/google-chrome/Profile 2/Favicons on a
single-copy Btrfs volume (csum failures correlated to the second with
each crash). A scrub found two further uncorrectable blocks (a Chrome
cache file and a gdm help file); both fixed. SSD SMART is clean and the
corruption is static across scrubs, pointing at a past RAM/bus event
rather than a failing drive.
Adds docs/incidents.md (dated incident log) and a CLAUDE.md pointer.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
jared