Add session bulk export and multi-target IM alarm delivery.

Ops can download every Host session as a ZIP for HQ analysis, fan key alarms to multiple WhatsApp targets, and the Plugins card copy stays short.

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

test/im-targets.test.mjs

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+import assert from 'node:assert/strict'
+import { test } from 'node:test'
+
+import {
+  formatImTargetsJson,
+  parseImTargetsJson,
+  resolveImTargets,
+  setImTargetSelected,
+} from '../src/netx/im-targets.ts'
+import { deliverAlarmToIm } from '../src/netx/alarm-im.ts'
+
+test('parseImTargetsJson dedupes and drops incomplete rows', () => {
+  const rows = parseImTargetsJson(JSON.stringify([
+    { botId: 'b1', targetId: 't1' },
+    { botId: 'b1', targetId: 't1' },
+    { botId: 'b2', targetId: '' },
+    { botId: 'b2', targetId: 't2' },
+  ]))
+  assert.deepEqual(rows, [
+    { botId: 'b1', targetId: 't1' },
+    { botId: 'b2', targetId: 't2' },
+  ])
+})
+
+test('resolveImTargets prefers imTargets JSON over legacy pair', () => {
+  assert.deepEqual(resolveImTargets({
+    imTargets: formatImTargetsJson([
+      { botId: 'b1', targetId: 'g1' },
+      { botId: 'b1', targetId: 'g2' },
+    ]),
+    imBotId: 'legacy',
+    imTargetId: 'old',
+  }), [
+    { botId: 'b1', targetId: 'g1' },
+    { botId: 'b1', targetId: 'g2' },
+  ])
+  assert.deepEqual(resolveImTargets({
+    imTargets: '',
+    imBotId: 'legacy',
+    imTargetId: 'old',
+  }), [{ botId: 'legacy', targetId: 'old' }])
+})
+
+test('setImTargetSelected toggles membership', () => {
+  const one = setImTargetSelected([], { botId: 'b', targetId: 't' }, true)
+  assert.deepEqual(one, [{ botId: 'b', targetId: 't' }])
+  assert.deepEqual(setImTargetSelected(one, { botId: 'b', targetId: 't' }, false), [])
+})
+
+test('deliverAlarmToIm fans out to every target', async () => {
+  const sent = []
+  const ctx = {
+    logger: { warn() {}, info() {} },
+    get: () => ({
+      send: async (botId, targetId, text) => {
+        sent.push({ botId, targetId, text })
+      },
+    }),
+  }
+  await deliverAlarmToIm(ctx, {
+    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' },
+  }, {
+    enabled: true,
+    lang: 'zh',
+    targets: [
+      { botId: 'bot', targetId: 'g1' },
+      { botId: 'bot', targetId: 'g2' },
+    ],
+  })
+  assert.equal(sent.length, 2)
+  assert.equal(sent[0].targetId, 'g1')
+  assert.equal(sent[1].targetId, 'g2')
+  assert.match(sent[0].text, /告警产生/)
+})