feat: add LLM prediction providers with structured output support

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/Http/Controllers/Api/PredictionController.php

@@ -15,11 +15,10 @@ class PredictionController extends Controller
 
     public function index(PredictionRequest $request): JsonResponse
     {
-        $fuelType = $request->fuelType();
         $lat = $request->filled('lat') ? (float) $request->input('lat') : null;
         $lng = $request->filled('lng') ? (float) $request->input('lng') : null;
 
-        $result = $this->predictionService->predict($fuelType, $lat, $lng);
+        $result = $this->predictionService->predict($lat, $lng);
 
         return response()->json($result);
     }

app/Http/Requests/Api/PredictionRequest.php

@@ -2,9 +2,7 @@
 
 namespace App\Http\Requests\Api;
 
-use App\Enums\FuelType;
 use Illuminate\Foundation\Http\FormRequest;
-use Illuminate\Validation\ValidationException;
 
 class PredictionRequest extends FormRequest
 {
@@ -16,18 +14,8 @@ class PredictionRequest extends FormRequest
     public function rules(): array
     {
         return [
-            'fuel_type' => ['required', 'string'],
             'lat' => ['nullable', 'numeric', 'between:-90,90'],
             'lng' => ['nullable', 'numeric', 'between:-180,180'],
         ];
     }
-
-    public function fuelType(): FuelType
-    {
-        try {
-            return FuelType::fromAlias($this->string('fuel_type')->toString());
-        } catch (\ValueError) {
-            throw ValidationException::withMessages(['fuel_type' => 'Unknown fuel type. Use: diesel, petrol, e10, e5, hvo, b10.']);
-        }
-    }
 }