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/Fakes/FakeArticleRepository.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Tests\Fakes;
+
+use App\DTOs\ArticleCandidateDTO;
+use App\Repositories\Contracts\ArticleRepositoryInterface;
+
+class FakeArticleRepository implements ArticleRepositoryInterface
+{
+    /** @var array<int, ArticleCandidateDTO> */
+    public array $candidates = [];
+
+    public function findSimilarByEmbedding(array $embedding, int $limit = 5, array $embeddingContext = []): array
+    {
+        return array_slice($this->candidates, 0, $limit);
+    }
+}

tests/Fakes/FakeDomainInfoTool.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Tests\Fakes;
+
+use App\Services\Tools\DomainInfoTool;
+use App\Services\Tools\OxxaClient;
+
+class FakeDomainInfoTool extends DomainInfoTool
+{
+    /** @var array<int, array{parameters:array,credentials:array}> */
+    public array $calls = [];
+
+    public array $response = ['ok' => true, 'data' => ['domain' => 'example.nl']];
+
+    public function __construct()
+    {
+        parent::__construct(new OxxaClient);
+    }
+
+    public function execute(array $parameters, array $credentials): array
+    {
+        $this->calls[] = [
+            'parameters' => $parameters,
+            'credentials' => $credentials,
+        ];
+
+        return $this->response;
+    }
+}

tests/Fakes/FakeLlmClient.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Tests\Fakes;
+
+use App\Services\Llm\LlmClientInterface;
+
+class FakeLlmClient implements LlmClientInterface
+{
+    /** @var array<string, array<int, float>> */
+    public array $embeddings = [];
+
+    /** @var array<int, string> */
+    public array $responses = [];
+
+    /** @var array<int, array{prompt:string, options:array}> */
+    public array $generatedPrompts = [];
+
+    public function embed(string $text): array
+    {
+        return $this->embeddings[$text] ?? [0.1, 0.2, 0.3];
+    }
+
+    public function generate(string $prompt, array $options = []): string
+    {
+        $this->generatedPrompts[] = [
+            'prompt' => $prompt,
+            'options' => $options,
+        ];
+
+        return array_shift($this->responses) ?? '{}';
+    }
+}

tests/Fakes/FakeTicketProcessingLoggerService.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Tests\Fakes;
+
+use App\Models\Ticket;
+use App\Services\TicketProcessingLoggerService;
+
+class FakeTicketProcessingLoggerService extends TicketProcessingLoggerService
+{
+    /** @var array<int, array{step:string,status:string,message:string|null,context:array}> */
+    public array $logs = [];
+
+    public function log(Ticket $ticket, string $step, string $status = 'info', ?string $message = null, array $context = []): void
+    {
+        $this->logs[] = [
+            'step' => $step,
+            'status' => $status,
+            'message' => $message,
+            'context' => $context,
+        ];
+    }
+}