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'

tests/Feature/Api/UserControllerTest.php

@@ -5,23 +5,23 @@ use Illuminate\Support\Facades\Hash;
 use Laravel\Sanctum\Sanctum;
 
 it('returns user preferences for authenticated user', function (): void {
-    $user = User::factory()->create(['preferred_fuel_type' => 'diesel']);
+    $user = User::factory()->create(['preferred_fuel_type' => 'b7_standard']);
     Sanctum::actingAs($user);
 
     $this->getJson('/api/user/preferences')
         ->assertOk()
-        ->assertJsonFragment(['preferred_fuel_type' => 'diesel']);
+        ->assertJsonFragment(['preferred_fuel_type' => 'b7_standard']);
 });
 
 it('updates user preferences', function (): void {
-    $user = User::factory()->create(['preferred_fuel_type' => 'petrol']);
+    $user = User::factory()->create(['preferred_fuel_type' => 'e10']);
     Sanctum::actingAs($user);
 
-    $this->putJson('/api/user/preferences', ['preferred_fuel_type' => 'diesel'])
+    $this->putJson('/api/user/preferences', ['preferred_fuel_type' => 'b7_standard'])
         ->assertOk()
-        ->assertJsonFragment(['preferred_fuel_type' => 'diesel']);
+        ->assertJsonFragment(['preferred_fuel_type' => 'b7_standard']);
 
-    expect($user->fresh()->preferred_fuel_type)->toBe('diesel');
+    expect($user->fresh()->preferred_fuel_type)->toBe('b7_standard');
 });
 
 it('rejects invalid fuel type in preferences update', function (): void {