feat: add OilPredictionResource with run-prediction header action

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

tests/Feature/Admin/OilPredictionResourceTest.php

@@ -0,0 +1,27 @@
+<?php
+
+use App\Filament\Resources\OilPredictionResource\Pages\ListOilPredictions;
+use App\Models\PricePrediction;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Livewire\Livewire;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    $this->admin = User::factory()->admin()->create();
+    $this->actingAs($this->admin);
+});
+
+it('renders the oil prediction list', function () {
+    $predictions = PricePrediction::factory()->count(3)->create();
+
+    Livewire::test(ListOilPredictions::class)
+        ->assertOk()
+        ->assertCanSeeTableRecords($predictions);
+});
+
+it('has a run prediction header action', function () {
+    Livewire::test(ListOilPredictions::class)
+        ->assertActionExists('runPrediction');
+});