The stack's health refactors carved main_desktop_tcc.py out of main_desktop.py
and status_inline_source.py out of gateway/status.py; both are imported on the
update path, so an edit to either must start e2e_upgrade (and, for the desktop
module, e2e_desktop_update). Route each facade by prefix so its <stem>_*
siblings are covered without naming files this branch does not have yet.
The desktop gate's SSH-v2 marker fix added remote-update-marker-programs.test.ts,
which reads the shared marker corpus: list it as a consumer, allowed absent until
#132345 lands, like the other gate-PR consumer.
d153acfe85