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

app/Jobs/SendScheduledWhatsAppJob.php

@@ -0,0 +1,64 @@
+<?php
+
+namespace App\Jobs;
+
+use App\Models\Plan;
+use App\Models\User;
+use App\Models\UserNotificationPreference;
+use App\Services\PlanFeatures;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Foundation\Queue\Queueable;
+
+/**
+ * Fan-out job for scheduled WhatsApp updates (morning / evening).
+ * Finds all eligible users and dispatches DispatchUserNotificationJob per user.
+ *
+ * Scheduled at 07:30 (morning) and 18:00 (evening) via routes/console.php.
+ */
+final class SendScheduledWhatsAppJob implements ShouldQueue
+{
+    use Queueable;
+
+    public function __construct(public readonly string $period)
+    {
+        //
+    }
+
+    public function handle(): void
+    {
+        $triggerType = $this->period === 'morning' ? 'scheduled_morning' : 'scheduled_evening';
+
+        // Plans that allow scheduled WhatsApp updates
+        $eligiblePlanNames = Plan::where('active', true)
+            ->get()
+            ->filter(fn (Plan $plan): bool => ($plan->features['whatsapp']['scheduled_updates'] ?? 0) > 0)
+            ->pluck('name')
+            ->all();
+
+        if (empty($eligiblePlanNames)) {
+            return;
+        }
+
+        // Users who have whatsapp preference enabled
+        $userIds = UserNotificationPreference::where('channel', 'whatsapp')
+            ->where('enabled', true)
+            ->distinct()
+            ->pluck('user_id');
+
+        User::whereIn('id', $userIds)
+            ->each(function (User $user) use ($triggerType, $eligiblePlanNames): void {
+                $features = PlanFeatures::for($user);
+
+                // Skip if their tier isn't eligible or daily limit is hit
+                if (! in_array($features->tier(), $eligiblePlanNames, strict: true)) {
+                    return;
+                }
+
+                if (! $features->canSendNow('whatsapp')) {
+                    return;
+                }
+
+                DispatchUserNotificationJob::dispatch($user, $triggerType, fuelType: 'all');
+            });
+    }
+}