feat: migrate legacy subscription checks to unified payment system

- Replace Laravel Cashier methods with new subscription system
  - Remove session-based subscription checking in bulk components
  - Update Dashboard.php to use PaymentOrchestrator for provider-agnostic sync
  - Maintain backward compatibility with existing Stripe subscriptions
  - Improve performance by eliminating session overhead
  - Add automatic migration of legacy subscriptions to new system

BREAKING CHANGE: Subscription checking now uses unified payment system instead of Laravel Cashier methods

app/Livewire/Dashboard/BulkGmail.php

@@ -2,7 +2,6 @@
 
 namespace App\Livewire\Dashboard;
 
-use Illuminate\Support\Facades\Session;
 use Livewire\Component;
 
 class BulkGmail extends Component
@@ -15,8 +14,7 @@ class BulkGmail extends Component
 
     public function mount(): void
     {
-        $subscriptionCheck = auth()->user()->subscribedToProduct(config('app.plans')[0]['product_id']);
-        Session::put('isSubscribed', $subscriptionCheck);
+        // Subscription check is now handled directly in render method
     }
 
     public function generateBulk(): void
@@ -110,9 +108,10 @@ class BulkGmail extends Component
 
     public function render()
     {
-        if (Session::get('isSubscribed')) {
+        if (auth()->user()->hasActiveSubscription()) {
             return view('livewire.dashboard.bulk-gmail')->layout('components.layouts.dashboard');
         }
+
         return view('livewire.dashboard.not-subscribed')->layout('components.layouts.dashboard');
     }
 }