Add NetBird integration adapter with real peer listing

Implements testConnection and listResources against the NetBird
Management API (/api/peers), mapping connected/disconnected peers to
resource health. Defaults to the NetBird Cloud API but respects an
optional baseUrl override for self-hosted management servers.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BbJV5nm8KPVH1oNJYKpnoF

backend/src/integrations/netbird.ts

@@ -0,0 +1,44 @@
+import type { IntegrationAdapter, Resource } from './types.js'
+
+interface NetbirdPeer {
+  name: string
+  hostname?: string
+  connected: boolean
+  ip?: string
+  os?: string
+}
+
+function baseUrlFor(config: Record<string, string>) {
+  return (config.baseUrl?.replace(/\/$/, '')) || 'https://api.netbird.io'
+}
+
+export const netbird: IntegrationAdapter = {
+  async testConnection(config, secrets) {
+    const apiKey = secrets.apiKey
+    if (!apiKey) return { ok: false, message: 'Missing API key' }
+    try {
+      const res = await fetch(`${baseUrlFor(config)}/api/peers`, {
+        headers: { Authorization: `Token ${apiKey}` },
+      })
+      if (!res.ok) return { ok: false, message: `HTTP ${res.status}` }
+      return { ok: true, message: 'Connected' }
+    } catch (err) {
+      return { ok: false, message: err instanceof Error ? err.message : 'Connection failed' }
+    }
+  },
+
+  async listResources(config, secrets): Promise<Resource[]> {
+    const apiKey = secrets.apiKey
+    if (!apiKey) return []
+    const res = await fetch(`${baseUrlFor(config)}/api/peers`, {
+      headers: { Authorization: `Token ${apiKey}` },
+    })
+    if (!res.ok) return []
+    const peers = (await res.json()) as NetbirdPeer[]
+    return peers.map((p) => ({
+      name: p.name || p.hostname || p.ip || 'unknown peer',
+      status: p.connected ? 'healthy' : 'critical',
+      detail: p.connected ? `Online — ${p.ip ?? ''}`.trim() : 'Offline',
+    }))
+  },
+}

backend/src/integrations/registry.ts

@@ -2,6 +2,7 @@ import type { IntegrationAdapter, IntegrationType } from './types.js'
 import { uptimeKuma } from './uptimeKuma.js'
 import { docker } from './docker.js'
 import { proxmox } from './proxmox.js'
+import { netbird } from './netbird.js'
 
 const notImplemented: IntegrationAdapter = {
   async testConnection() {
@@ -13,7 +14,7 @@ export const adapterRegistry: Record<IntegrationType, IntegrationAdapter> = {
   uptime_kuma: uptimeKuma,
   docker,
   proxmox,
-  netbird: notImplemented,
+  netbird,
   cloudflare: notImplemented,
   aws: notImplemented,
   weather: notImplemented,