feat: add HasFactory and factories for ApiLog, BrentPrice, PricePrediction

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

database/factories/ApiLogFactory.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace Database\Factories;
+
+use App\Models\ApiLog;
+use Illuminate\Database\Eloquent\Factories\Factory;
+
+/** @extends Factory<ApiLog> */
+class ApiLogFactory extends Factory
+{
+    public function definition(): array
+    {
+        return [
+            'service' => fake()->randomElement(['fuel_finder', 'fred', 'anthropic', 'postcodes_io']),
+            'method' => fake()->randomElement(['GET', 'POST']),
+            'url' => fake()->url(),
+            'status_code' => fake()->randomElement([200, 200, 200, 401, 429, 500]),
+            'duration_ms' => fake()->numberBetween(50, 2000),
+            'error' => null,
+            'created_at' => fake()->dateTimeBetween('-7 days'),
+        ];
+    }
+
+    public function failed(): static
+    {
+        return $this->state([
+            'status_code' => fake()->randomElement([400, 401, 403, 429, 500, 503]),
+            'error' => fake()->sentence(),
+        ]);
+    }
+}