The tracked-item delete path in quick() called shutil.rmtree() on any tracked
directory without consulting the protection list, which only the empty-dir
sweep used. guess_category() files every path under cache/ as "temp", so a
terminal command that merely mentioned $HERMES_HOME/cache tracked the
directory itself, and 7 days later quick() removed cache/ wholesale — taking
cache/terminal (terminal snapshots) with it and breaking every later command
with a mktemp "No such file or directory".
Fix: _is_protected_dir() — a tracked DIRECTORY that is HERMES_HOME itself or
sits under an _EMPTY_DIR_PROTECTED_TOP_LEVEL tree is never tracked by
guess_category(), never listed by dry_run(), and skipped (logged SKIPPED,
entry dropped) by quick(). Files under cache/ still age out as before.
kanban/ (task attachments and workspaces have their own lifecycle) is added to
both _NEVER_TRACK_TOP_LEVEL and _EMPTY_DIR_PROTECTED_TOP_LEVEL; stale pre-fix
"test" entries under it are dropped by the existing re-validation instead of
deleted. The kanban row was first proposed in #80842 (@nicha16).
Fixes#114552
33f3d96b99