Add key-alarm push: reuse URL/token, dial netx hub, sticky DSH session (0.1.15).

Plugins card gains an alarm-push toggle; when enabled, netxops subscribes outbound and followups a Netx Ops session without requiring im/WhatsApp.

Co-authored-by: Cursor <cursoragent@cursor.com>

test/alarm-push.test.mjs

@@ -0,0 +1,36 @@
+import assert from 'node:assert/strict'
+import { test } from 'node:test'
+
+import {
+  alarmSubscribeUrl,
+  formatAlarmPrompt,
+} from '../src/netx/alarm-push.ts'
+
+test('alarmSubscribeUrl maps http(s) REST roots to the hub path', () => {
+  assert.equal(
+    alarmSubscribeUrl('http://192.168.1.10:8890'),
+    'ws://192.168.1.10:8890/v1/integrations/dsh-alarm/ws',
+  )
+  assert.equal(
+    alarmSubscribeUrl('https://netx.example/'),
+    'wss://netx.example/v1/integrations/dsh-alarm/ws',
+  )
+  assert.equal(alarmSubscribeUrl(''), '')
+})
+
+test('formatAlarmPrompt keeps human fields without raw sockets', () => {
+  const text = formatAlarmPrompt({
+    action: 'inserted',
+    rule_label: 'Power Down',
+    object_name: 'PORT-1',
+    perceived_severity: 'critical',
+    native_probable_cause: 'LOS',
+    time_created: '2026-01-01T00:00:00Z',
+    notification_id: 'n1',
+    alarm_key: 'k1',
+    ne: { host_name: 'PE1', ip_address: '10.0.0.1' },
+  }, 'zh')
+  assert.match(text, /告警产生/)
+  assert.match(text, /PE1 \(10\.0\.0\.1\)/)
+  assert.match(text, /请分析这条关键告警/)
+})