Add unit and feature tests for ticket processing and article management

- Implement Fake repositories and services for testing purposes.
- Create tests for Article API including creation, validation, and listing.
- Develop ProcessTicketJobFlowTest to validate ticket processing logic.
- Add QuickReplyAdminTest for creating and updating quick replies.
- Implement TicketAndArticleModelTest to ensure proper cascading deletes and credential encryption.
- Create TicketIngestionTest for ticket creation and job dispatching.
- Add TicketShowPageTest to verify rendering of quick replies and tool calls.
- Implement unit tests for ClassifierPromptBuilder, EmbeddingService, LlmJsonDecoder, QuickReplyResolver, SupportReplyService, TicketResultPayloadBuilder, TicketToolCallService, and ToolCallRequestValidator.

tests/Feature/TicketIngestionTest.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Jobs\ProcessTicketJob;
+use App\Models\Ticket;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Queue;
+use Tests\TestCase;
+
+class TicketIngestionTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_it_ingests_ticket_and_dispatches_processing_job(): void
+    {
+        Queue::fake();
+
+        $response = $this->postJson('/api/tickets', [
+            'message' => 'Mijn mail werkt niet',
+            'api_credentials' => [
+                'apiuser' => 'demo',
+                'apipassword' => 'secret',
+            ],
+        ]);
+
+        $response->assertStatus(202)
+            ->assertJsonPath('status', 'queued');
+
+        $ticket = Ticket::query()->latest('id')->first();
+        $this->assertNotNull($ticket);
+        $this->assertSame('queued', $ticket->status);
+        $this->assertSame('demo', $ticket->api_credentials['apiuser']);
+
+        $raw = DB::table('tickets')->where('id', $ticket->id)->value('api_credentials');
+        $this->assertIsString($raw);
+        $this->assertStringNotContainsString('secret', $raw);
+
+        Queue::assertPushed(ProcessTicketJob::class);
+    }
+
+    public function test_it_validates_required_message(): void
+    {
+        $response = $this->postJson('/api/tickets', []);
+        $response->assertStatus(422);
+    }
+}