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/Http/Resources/Api/StationResource.php

@@ -3,6 +3,7 @@
 namespace App\Http\Resources\Api;
 
 use App\Enums\PriceClassification;
+use App\Enums\PriceReliability;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\JsonResource;
 use Illuminate\Support\Carbon;
@@ -11,6 +12,9 @@ class StationResource extends JsonResource
 {
     public function toArray(Request $request): array
     {
+        $updatedAt = $this->price_effective_at ? Carbon::parse($this->price_effective_at) : null;
+        $reliability = PriceReliability::fromUpdatedAt($updatedAt);
+
         return [
             'station_id' => $this->node_id,
             'name' => $this->trading_name,
@@ -27,12 +31,10 @@ class StationResource extends JsonResource
             'price_updated_at' => $this->price_effective_at
                 ? Carbon::parse($this->price_effective_at)->toISOString()
                 : null,
-            'price_classification' => PriceClassification::fromUpdatedAt(
-                $this->price_effective_at ? Carbon::parse($this->price_effective_at) : null
-            )->value,
-            'price_classification_label' => PriceClassification::fromUpdatedAt(
-                $this->price_effective_at ? Carbon::parse($this->price_effective_at) : null
-            )->label(),
+            'price_classification' => PriceClassification::fromUpdatedAt($updatedAt)->value,
+            'price_classification_label' => PriceClassification::fromUpdatedAt($updatedAt)->label(),
+            'reliability' => $reliability->value,
+            'reliability_label' => $reliability->label(),
         ];
     }
 }