Review of the first cut:
- The Home Assistant errno hint matched a bare 65 and two error strings on
every platform. 65 is ENOPKG on Linux and "No route to host" is Linux's
errno 113, so a systemd gateway (or a Terminal-run gateway on macOS) with a
genuinely unreachable HA host was told macOS was blocking launchd. Gate on
darwin + errno.EHOSTUNREACH + the HERMES_SUPERVISED_CHILD marker the
generated plist already sets; no new env var.
- With a `"` in the home path the wrapper's own ps line tokenized as
`gateway run`, so `hermes gateway stop` would have signalled osascript
alongside the gateway. The canonical matcher now bails on an exact
argv[0] basename of osascript (the gateway is its child and is matched on
its own command line). Asserted in the existing hostile-path test.
- Log paths spelled once; docstring now says what StandardOutPath still
carries (osascript's own output) instead of implying it is redundant.
eda2432cce