feat: initial commit — UniFi snap-in package

Full UniFi dashboard snap-in including:
- WiFi/client/device stats with time-series snapshots
- Client Dashboard with traffic, satisfaction, signal, download charts
- Webhook alerting with debounced offline/online detection
- AP snapshot collection, client snapshot collection
- Device classification (type and OS) from OUI/hostname heuristics
- Webhook cooldown, templates, and multi-platform delivery

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

src/Console/CleanupSnapshots.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Dashboard\Unifi\Console;
+
+use App\Models\Setting;
+use Dashboard\Unifi\Models\ApSnapshot;
+use Dashboard\Unifi\Models\ClientSnapshot;
+use Dashboard\Unifi\Models\WebhookLog;
+use Illuminate\Console\Command;
+
+class CleanupSnapshots extends Command
+{
+    protected $signature   = 'unifi:cleanup';
+    protected $description = 'Remove old AP snapshots and webhook logs based on retention setting';
+
+    public function handle(): int
+    {
+        $days = (int) Setting::get('unifi.retention_days', 30);
+
+        $cutoff = now()->subDays($days);
+
+        $snapshots = ApSnapshot::where('captured_at', '<', $cutoff)->delete();
+        $clientSnapshots = ClientSnapshot::where('captured_at', '<', $cutoff)->delete();
+        $webhookLogs = WebhookLog::where('fired_at', '<', $cutoff)->delete();
+
+        $this->info("Cleaned up: {$snapshots} AP snapshots, {$clientSnapshots} client snapshots, {$webhookLogs} webhook logs older than {$days} days.");
+
+        return self::SUCCESS;
+    }
+}