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/Http/Controllers/WebhookController.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace Dashboard\Unifi\Http\Controllers;
+
+use Dashboard\Unifi\Models\WebhookConfig;
+use Dashboard\Unifi\Services\WebhookCheckService;
+use Illuminate\Http\Request;
+use Illuminate\Routing\Controller;
+use Inertia\Inertia;
+
+class WebhookController extends Controller
+{
+    public function index()
+    {
+        return Inertia::render('Unifi/Webhooks', [
+            'webhooks'         => WebhookConfig::latest()->get(),
+            'recentLogs'       => \Dashboard\Unifi\Models\WebhookLog::with('config:id,name')
+                ->latest('fired_at')->take(50)->get(),
+            'eventTypes'       => WebhookCheckService::EVENTS,
+            'templateVars'     => WebhookCheckService::TEMPLATE_VARS,
+            'defaultTemplates' => WebhookCheckService::DEFAULT_TEMPLATES,
+        ]);
+    }
+
+    public function store(Request $request)
+    {
+        $data = $request->validate([
+            'name'             => 'required|string|max:255',
+            'url'              => 'required|url|max:500',
+            'secret'           => 'nullable|string|max:255',
+            'is_active'        => 'boolean',
+            'events'           => 'required|array|min:1',
+            'events.*'         => 'string|in:' . implode(',', array_keys(WebhookCheckService::EVENTS)),
+            'thresholds'       => 'nullable|array',
+            'device_filter'    => 'nullable|array',
+            'tracked_clients'  => 'nullable|array',
+            'templates'        => 'nullable|array',
+            'cooldown_minutes' => 'integer|min:1|max:1440',
+        ]);
+        WebhookConfig::create($data);
+        return back()->with('success', 'Webhook created.');
+    }
+
+    public function update(Request $request, WebhookConfig $webhook)
+    {
+        $data = $request->validate([
+            'name'             => 'required|string|max:255',
+            'url'              => 'required|url|max:500',
+            'secret'           => 'nullable|string|max:255',
+            'is_active'        => 'boolean',
+            'events'           => 'required|array|min:1',
+            'events.*'         => 'string|in:' . implode(',', array_keys(WebhookCheckService::EVENTS)),
+            'thresholds'       => 'nullable|array',
+            'device_filter'    => 'nullable|array',
+            'tracked_clients'  => 'nullable|array',
+            'templates'        => 'nullable|array',
+            'cooldown_minutes' => 'integer|min:1|max:1440',
+        ]);
+        $webhook->update($data);
+        return back()->with('success', 'Webhook updated.');
+    }
+
+    public function destroy(WebhookConfig $webhook)
+    {
+        $webhook->delete();
+        return back()->with('success', 'Webhook deleted.');
+    }
+
+    public function test(WebhookConfig $webhook)
+    {
+        $payload = [
+            'event'     => 'test',
+            'timestamp' => now()->toIso8601String(),
+            'data'      => ['message' => 'This is a test webhook from ' . config('app.name')],
+        ];
+
+        $headers = ['Content-Type' => 'application/json'];
+        if ($webhook->secret) {
+            $headers['X-Webhook-Signature'] = hash_hmac('sha256', json_encode($payload), $webhook->secret);
+        }
+
+        try {
+            $response = \Illuminate\Support\Facades\Http::withHeaders($headers)->timeout(10)->post($webhook->url, $payload);
+            return response()->json(['ok' => true, 'status' => $response->status()]);
+        } catch (\Throwable $e) {
+            return response()->json(['ok' => false, 'error' => $e->getMessage()], 422);
+        }
+    }
+}