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/User.php

@@ -13,15 +13,16 @@ use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Foundation\Auth\User as Authenticatable;
 use Illuminate\Notifications\Notifiable;
 use Illuminate\Support\Str;
+use Laravel\Cashier\Billable;
 use Laravel\Fortify\TwoFactorAuthenticatable;
 use Laravel\Sanctum\HasApiTokens;
 
-#[Fillable(['name', 'email', 'password', 'is_admin', 'postcode', 'preferred_fuel_type'])]
+#[Fillable(['name', 'email', 'email_verified_at', 'password', 'is_admin', 'postcode', 'preferred_fuel_type'])]
 #[Hidden(['password', 'two_factor_secret', 'two_factor_recovery_codes', 'remember_token'])]
 class User extends Authenticatable implements FilamentUser
 {
     /** @use HasFactory<UserFactory> */
-    use HasApiTokens, HasFactory, Notifiable, TwoFactorAuthenticatable;
+    use Billable, HasApiTokens, HasFactory, Notifiable, TwoFactorAuthenticatable;
 
     /**
      * Get the attributes that should be cast.