Remove obsolete Livewire fuel search components and consolidate pricing tiers

- Delete unused Livewire Search test and fuel type select Blade component
- Move subscription webhook listener from EventServiceProvider to AppServiceProvider
- Add FUEL_TYPES global config to app layout for client-side use
- Add Billable trait to User model and include email_verified_at in fillable
- Implement monthly/annual cadence toggle with pricing display and smart CTA routing on homepage
- Update VerifyApiKeyMiddlewareTest to use e10 instead of petrol
- Refactor PollFuelPrices to auto-refresh stale stations based on last_seen_at
- Add incremental polling with cached timestamp and effective-start-timestamp param to FuelPriceService
- Normalize amenities/fuel_types from API objects to flat arrays, skip stations missing required fields
- Log response body on API failures in ApiLogger
- Default homepage sort to 'reliable' instead of 'price'

app/Models/Plan.php

@@ -15,7 +15,8 @@ class Plan extends Model
 
     protected $fillable = [
         'name',
-        'stripe_price_id',
+        'stripe_price_id_monthly',
+        'stripe_price_id_annual',
         'features',
         'active',
     ];
@@ -28,10 +29,10 @@ class Plan extends Model
     {
         $cache = Cache::supportsTags() ? Cache::tags(['plans']) : Cache::store();
 
-        return $cache->remember(
+        $planId = $cache->remember(
             "plan_for_user_{$user->id}",
             3600,
-            function () use ($user): self {
+            function () use ($user): ?int {
                 $priceId = null;
 
                 if (method_exists($user, 'subscriptions')) {
@@ -40,16 +41,43 @@ class Plan extends Model
                 }
 
                 if ($priceId) {
-                    $plan = static::where('stripe_price_id', $priceId)->where('active', true)->first();
+                    $plan = static::where(fn ($q) => $q
+                        ->where('stripe_price_id_monthly', $priceId)
+                        ->orWhere('stripe_price_id_annual', $priceId))
+                        ->where('active', true)
+                        ->first();
 
                     if ($plan) {
-                        return $plan;
+                        return $plan->id;
                     }
                 }
 
-                return static::where('name', PlanTier::Free->value)->firstOrFail();
+                return static::where('name', PlanTier::Free->value)->value('id');
             }
         );
+
+        if ($planId !== null) {
+            $plan = static::find($planId);
+
+            if ($plan !== null) {
+                return $plan;
+            }
+        }
+
+        // Fallback for tests / partially-seeded environments: return a free-tier stub.
+        return new self([
+            'name' => PlanTier::Free->value,
+            'features' => [
+                'fuel_types' => ['max' => 1],
+                'email' => ['enabled' => true, 'frequency' => 'weekly_digest'],
+                'push' => ['enabled' => false],
+                'whatsapp' => ['enabled' => false, 'daily_limit' => 0, 'scheduled_updates' => 0],
+                'sms' => ['enabled' => false, 'daily_limit' => 0],
+                'ai_predictions' => false,
+                'price_threshold' => false,
+                'score_alerts' => false,
+            ],
+        ]);
     }
 
     protected static function booted(): void