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/Unit/Services/FuelPriceServiceTest.php

@@ -6,6 +6,7 @@ use App\Models\StationPriceCurrent;
 use App\Services\ApiLogger;
 use App\Services\FuelPriceService;
 use App\Services\StationTaggingService;
+use Carbon\CarbonInterface;
 use Illuminate\Foundation\Testing\RefreshDatabase;
 use Illuminate\Support\Facades\Cache;
 use Illuminate\Support\Facades\Http;
@@ -310,3 +311,110 @@ it('stops pagination when an empty batch is returned', function (): void {
 
     Http::assertSentCount(1);
 });
+
+it('caches the poll timestamp and sends it on subsequent polls', function (): void {
+    Cache::put('fuel_finder_access_token', 'tok', 3540);
+    Cache::forget('fuel_finder_last_price_poll_at');
+
+    Http::fake([
+        '*/pfs/fuel-prices*' => Http::response([]),
+    ]);
+
+    $this->service->pollPrices();
+
+    expect(Cache::get('fuel_finder_last_price_poll_at'))->toBeInstanceOf(CarbonInterface::class);
+
+    $this->service->pollPrices();
+
+    Http::assertSent(fn ($request) => str_contains($request->url(), 'effective-start-timestamp='));
+});
+
+it('does not cache the poll timestamp when a batch errors', function (): void {
+    Cache::put('fuel_finder_access_token', 'tok', 3540);
+    Cache::forget('fuel_finder_last_price_poll_at');
+
+    Http::fake([
+        '*/pfs/fuel-prices*' => Http::response([], 500),
+    ]);
+
+    $this->service->pollPrices();
+
+    expect(Cache::has('fuel_finder_last_price_poll_at'))->toBeFalse();
+});
+
+it('skips price rows for stations not present in the stations table', function (): void {
+    Cache::put('fuel_finder_access_token', 'tok', 3540);
+
+    Http::fake([
+        '*/pfs/fuel-prices*' => Http::sequence()
+            ->push([[
+                'node_id' => 'unknown-station',
+                'fuel_prices' => [[
+                    'fuel_type' => 'E10',
+                    'price' => 142.9,
+                    'price_last_updated' => '2026-04-04T10:00:00.000Z',
+                    'price_change_effective_timestamp' => '2026-04-04T10:00:00.000Z',
+                ]],
+            ]])
+            ->push([]),
+    ]);
+
+    $inserted = $this->service->pollPrices();
+
+    expect($inserted)->toBe(0)
+        ->and(StationPrice::count())->toBe(0)
+        ->and(StationPriceCurrent::count())->toBe(0);
+});
+
+it('normalises amenities and fuel_types object payloads to flat arrays', function (): void {
+    $apiStations = [[
+        'node_id' => 'abc999',
+        'trading_name' => 'Shell Somewhere',
+        'brand_name' => 'Shell',
+        'is_same_trading_and_brand_name' => false,
+        'is_motorway_service_station' => false,
+        'is_supermarket_service_station' => false,
+        'temporary_closure' => false,
+        'permanent_closure' => false,
+        'location' => [
+            'postcode' => 'AB1 2CD',
+            'latitude' => 52.1,
+            'longitude' => -1.2,
+        ],
+        'amenities' => [
+            'adblue_pumps' => true,
+            'car_wash' => false,
+            'customer_toilets' => true,
+        ],
+        'fuel_types' => [
+            'E10' => true,
+            'E5' => true,
+            'B7_Standard' => true,
+            'B7_Premium' => false,
+            'B10' => false,
+            'HVO' => false,
+        ],
+    ]];
+
+    $this->service->upsertStations($apiStations);
+
+    $station = Station::find('abc999');
+    expect($station->amenities)->toBe(['adblue_pumps', 'customer_toilets'])
+        ->and($station->fuel_types)->toBe(['E10', 'E5', 'B7_Standard']);
+});
+
+it('skips stations missing required fields', function (): void {
+    $apiStations = [
+        ['node_id' => 'missing-loc', 'trading_name' => 'Bad Data'],
+        [
+            'node_id' => 'good',
+            'trading_name' => 'Good Station',
+            'location' => ['postcode' => 'AB1 2CD', 'latitude' => 52.0, 'longitude' => -1.0],
+        ],
+    ];
+
+    $this->service->upsertStations($apiStations);
+
+    expect(Station::find('missing-loc'))->toBeNull()
+        ->and(Station::find('good'))->not->toBeNull();
+});