A brand new namespace object's memory/presets directory doesn't exist yet,
and accounts differ in whether they're in the group the shared memory tree
(eco_cnf_bernina/memory/) is setgid to -- gac-bernina's default group isn't
unx-sf_bernina_bs and that can't easily be changed. ensure_dir() already
warns-and-continues on a permission failure, but AdjustableFS's write then
turned that into an uncaught FileNotFoundError, taking the whole Assembly
(and anything wrapping it, e.g. Namespace.append_obj) down -- hit live when
constructing the new bernina.status_server object.
Memory.setup_path() now falls back to a private, per-account directory under
home (the same pattern AdjustableFS's own group_writable=False already uses
for RecentComponents/ComponentBookmarks) when the shared one can't be
created, so an account like gac-bernina still gets working memory/presets,
just not cross-account-shared for objects it's the first to touch.
Assembly.__init__ additionally degrades to self.memory = None on any other
unexpected failure there, rather than ever letting it take the object down.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
