With the macos_only marker the win32 skipif is redundant (the marker already
skips every non-darwin host) and the is_macos() fake in _wire contradicts the
repo rule that host-specific behaviour is tested on that host, not by making
the interpreter believe it is elsewhere. Drop both.
_get_service_pids(all_profiles=True) also runs a bare `launchctl list` prefix
scan, so on a macOS box with a live ai.hermes.gateway* fleet the scoping
assertions picked up real PIDs (the one failure the reporter could clear by
booting the gateway out). Stub subprocess.run in _wire so the tests assert on
routing, not on the developer machine.
The cherry-picked tests/ci change-detector (asserting one specific file is in
the macos_only list) is dropped: the selector test suite already covers the
mechanism, and the marker is now the file's declaration.
10faa3d7c7