Both failed only in the full Linux suite, which the targeted local
battery never ran:
- test_update_zip_two_phase.py's AST guard (#76105) flags any code
literal "Scripts" in hermes_cli as an open-coded venv layout.
migrate_windows_bin_path's legacy PATH key now derives it via
venv_bin_dir(root / "venv", windows=True) — same value, canonical
helper. The literal `venv` component stays: the key must match what
the pre-#83797 installer wrote to the registry, not where the venv
lives now.
- The managed-bin marker tests built expected PATH entries from
tmp_path, so on a POSIX host they compared forward-slash strings
against the backslash markers and could never match. Markers match
Windows registry PATH entries, so the tests now feed Windows-shaped
literals — host-independent, same contract.
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