v0.5.9

Windows CI repair: since v0.5.5 the windows-latest CI legs have been red — v0.5.7's resident-service feature made serve status die on Windows, and the _is_awerouter_process tests assume a readable command line that Windows cannot provide.

Fixed

• awerouter serve status works on Windows again: installed_services() now reports none on platforms without a service manager instead of exiting with the resident-services error (which is what service_kind() raised). Mutating paths (--install, resident stop/purge) still refuse loudly through the new require_service_kind() wrapper — same message as before (src/awerouter/service.py; TestStatus in tests/test_cli.py runs on Windows again).
• _read_cmdline on Windows returns "unverifiable" (None) instead of a false "": there is no /proc, and MSYS ps cannot see native processes, so the old fallback misclassified every live pid as dead. The serve stop guard it feeds is POSIX-only today, but the contract no longer lies for any future Windows stop path (src/awerouter/runtime.py). TestIsAwerouterProcess skips on Windows with that reason — command-line matching cannot be observed where reading is impossible.
• serve status tests no longer read the developer's real LaunchAgents/systemd directories: a machine with a resident service installed failed TestStatus locally even though CI was green (tests/test_cli.py).