The unit suite could write to and flock the real ~/.bot-bottle: state,
queue, and audit dirs all derive from supervise.bot_bottle_root() ->
Path.home(). A test taking a flock on the real audit log blocks
indefinitely when a live bottle's supervise sidecar holds that lock
(observed: a `coverage run` hung at 0% CPU), and unisolated tests
otherwise pollute the developer's home dir.
Point HOME at a throwaway temp dir for the whole tests/unit package
(restored + cleaned at exit). Tests that set their own HOME now restore
to the isolated dir, not the real one; tests that patch bot_bottle_root
directly are unaffected.
Closes#302
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NkwFXLFff9PYPy4wgVBJp9
didericis