Add subscription tiers, notification preferences, and logging infrastructure

- Add database migrations for plans, subscriptions, notification preferences, and notification log tables
- Implement DispatchUserNotificationJob to handle channel resolution, daily limits, and logging (sent/tier_restricted/daily_limit)
- Add SendScheduledWhatsAppJob for scheduled notification delivery
- Create PlanFeatures service to resolve tier capabilities, check daily limits, and validate fuel

routes/console.php

@@ -1,5 +1,6 @@
 <?php
 
+use App\Jobs\SendScheduledWhatsAppJob;
 use Illuminate\Foundation\Inspiring;
 use Illuminate\Support\Facades\Artisan;
 use Illuminate\Support\Facades\Schedule;
@@ -28,3 +29,7 @@ Schedule::command('oil:predict --fetch')
     ->withoutOverlapping()
     ->onOneServer()
     ->runInBackground();
+
+// Scheduled WhatsApp updates — morning and evening
+Schedule::job(new SendScheduledWhatsAppJob('morning'))->dailyAt('07:30')->onOneServer();
+Schedule::job(new SendScheduledWhatsAppJob('evening'))->dailyAt('18:00')->onOneServer();