feat: implement AI styling foundation and billing scope rework

app/Http/Requests/Tenant/BillingAddonHistoryRequest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Requests\Tenant;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class BillingAddonHistoryRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'page' => ['nullable', 'integer', 'min:1'],
+            'per_page' => ['nullable', 'integer', 'min:1', 'max:100'],
+            'event_id' => ['nullable', 'integer', 'min:1'],
+            'event_slug' => ['nullable', 'string', 'max:191'],
+            'status' => ['nullable', 'in:pending,completed,failed'],
+        ];
+    }
+}