Fix Ruijie network device detection (#1168)

domain/host.test.ts

@@ -165,6 +165,11 @@ test("detectVendorFromSshVersion recognizes legacy Huawei VRP dash banner", () =
   assert.equal(detectVendorFromSshVersion("SSH-2.0--"), "huawei");
 });
 
+test("detectVendorFromSshVersion recognizes Ruijie RGOS banner", () => {
+  assert.equal(detectVendorFromSshVersion("RGOS_SSH"), "ruijie");
+  assert.equal(detectVendorFromSshVersion("SSH-2.0-RGOS_SSH"), "ruijie");
+});
+
 test("shouldProbeSessionCwd allows the probe on a plain Linux host", () => {
   assert.equal(
     shouldProbeSessionCwd({ isNetworkDevice: false, remoteSshVersion: "OpenSSH_9.6" }),

domain/host.ts

@@ -34,6 +34,7 @@ export const NETWORK_DEVICE_OPTIONS = [
   'fortinet',
   'paloalto',
   'zyxel',
+  'ruijie',
 ] as const;
 
 export type NetworkDeviceVendor = typeof NETWORK_DEVICE_OPTIONS[number];
@@ -118,6 +119,9 @@ export const detectVendorFromSshVersion = (softwareVersion?: string): '' | Netwo
   // ZyXEL ZyWALL
   if (/^Zyxel\s*SSH/i.test(s)) return 'zyxel';
 
+  // Ruijie RGOS
+  if (/^RGOS_SSH\b/i.test(s)) return 'ruijie';
+
   return '';
 };