Tests did monkeypatch.setattr(<facade module>, name) where name is now defined in a
sibling module and the production path reads the sibling's binding. Where production
reads through BOTH bindings the setattr is duplicated onto the defining module (import
added next to the existing alias import); where only the sibling reads it the target is
repointed. Seams whose production readers go through the facade are left alone.
Guard the .lazy-refresh-incomplete marker writer (update_cmd), launch-time
recovery (main.py), and _early_recovery repair paths behind a two-condition
check: running under pytest AND the target is this live checkout. Sandboxed
tmp_path tests still exercise the real code paths.
Salvaged from PR #72002 by @fcavalcantirj. Fixes#72000.
Co-authored-by: fcavalcantirj <felipe.cavalcanti.rj@gmail.com>