The config was always replaced by a rename, never written in place, so
the write helper's refusal of a read-only target, right for the presets
it mirrors, stopped a read-only OrcaSlicer.conf from ever being saved
again. The helper takes an explicit opt-in to replace such a file, and
the two config save variants share one writer that uses it.
The identity helper's stat headers were included only under the Linux
guard, which the Linux-only build never noticed; they are included on
every platform now. A temporary the longer name pushes past the path
limit is written in place like one refused for permissions, the rename
retry that waits for a Windows reader runs on Windows only, a failing
stat in the sweep skips that entry rather than ending the sweep, and the
rename fallback no longer stats the target it is about to remove.
Hanif Koh
dda6646c49