fix(gateway): add hermes-gateway script pattern to PID detection

The _looks_like_gateway_process function was missing the
hermes-gateway script pattern, causing dashboard to report gateway
as not running even when the process was active.

Patterns now cover all entry points:
- hermes_cli.main gateway
- hermes_cli/main.py gateway
- hermes gateway
- hermes-gateway (new)
- gateway/run.py

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

gateway/status.py

@@ -136,6 +136,7 @@ def _looks_like_gateway_process(pid: int) -> bool:
         "hermes_cli.main gateway",
         "hermes_cli/main.py gateway",
         "hermes gateway",
+        "hermes-gateway",
         "gateway/run.py",
     )
     return any(pattern in cmdline for pattern in patterns)