The test passed on dev boxes where a cua-driver binary is on PATH but
failed in hermetic CI: _call_tool_via_cli hit resolve_cua_driver_cmd()'s
install-hint early exit before reaching the spawn-env assertion. Pin the
resolver so the test exercises the code path it actually asserts.
Follow-up to the #62821 salvage: the _cua_driver_supports_no_overlay
--help probe is another Windows-reachable spawn; give it the same
windows_hide_flags() treatment. Also adjust the status test to stub
_resolve_driver_cmd (permissions.py resolves via that helper, not
shutil.which).
Apply windows_hide_flags() (CREATE_NO_WINDOW; 0 on POSIX) at the
Windows-reachable cua-driver subprocess boundaries: manifest probe,
update checker, CLI fallback transport, doctor health-report spawn,
and the permissions/status runner. Prevents OpenConsole/Windows
Terminal windows flashing into the foreground when spawned from
GUI-backed Gateway/Desktop processes.
The env-probe half of the original PR was already implemented on main
and is not re-applied here.
Salvaged from #62821 by @ZundamonnoVRChatkaisetu (original commits
carried a placeholder 'Claude Code Enterprise' identity; re-authored
to the contributor's GitHub identity).
The old assertion read _drive_health_report's source text for the
_sanitized_cua_env() call — a banned source-reading test that broke when
the spawn moved into _open_mcp with identical runtime behavior. Now
intercepts subprocess.Popen at the _open_mcp seam and asserts the env it
actually receives strips secrets and applies the telemetry opt-out.
cua_driver_update_check now short-circuits to None when no driver
resolves; CI has none installed, so pin resolve_cua_driver_cmd in the
update-check and env-sanitization tests.
PR #58889 fixed the CLI-fallback transport; review of that fix found the
same leak class at four sibling spawn sites of the third-party cua-driver
binary:
- _resolve_mcp_invocation (cua-driver manifest): no env= at all — full
parent environment inherited
- cua_driver_update_check (check-update --json): telemetry env but no
secret sanitization
- doctor._drive_health_report (<binary> mcp Popen): telemetry env only
- permissions._run (every macOS/Linux permission probe): telemetry env only
All now route through _sanitize_subprocess_env(cua_driver_child_env()),
matching the sanctioned MCP spawn and the #53503/#55709/#58889 strip-by-
default policy for non-terminal spawns. Sanitization degrades gracefully
(falls back to the telemetry env) so doctor/permission probes never break
on an import error.
4 regression tests covering each site.
