feat: password rotation, PPSK management, VLAN/AP groups

- Add password rotation: RotatePasswords console command + migration + service updates
- Add PPSK management: UnifiPpsk model, migration, SyncPpskSchedules console
- Add VLAN groups and AP groups: VlanGroupController, ApGroupController, model, migration
- Add RebootAllAps console command
- Add in_alert column to device states
- Wire new features through service provider, routes, and existing controllers/services

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Http/Controllers/VlanGroupController.php

@@ -0,0 +1,39 @@
+<?php
+
+namespace Dashboard\Unifi\Http\Controllers;
+
+use Dashboard\Unifi\Models\VlanGroup;
+use Illuminate\Http\Request;
+use Illuminate\Routing\Controller;
+
+class VlanGroupController extends Controller
+{
+    public function store(Request $request)
+    {
+        $data = $request->validate([
+            'name'        => 'required|string|max:100',
+            'vlan_id'     => 'required|integer|min:1|max:4094',
+            'description' => 'nullable|string|max:255',
+        ]);
+        $data['sort_order'] = VlanGroup::max('sort_order') + 1;
+        VlanGroup::create($data);
+        return back()->with('success', 'VLAN group added.');
+    }
+
+    public function update(Request $request, VlanGroup $vlanGroup)
+    {
+        $data = $request->validate([
+            'name'        => 'required|string|max:100',
+            'vlan_id'     => 'required|integer|min:1|max:4094',
+            'description' => 'nullable|string|max:255',
+        ]);
+        $vlanGroup->update($data);
+        return back()->with('success', 'VLAN group updated.');
+    }
+
+    public function destroy(VlanGroup $vlanGroup)
+    {
+        $vlanGroup->delete();
+        return back()->with('success', 'VLAN group deleted.');
+    }
+}