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.

composer.json

@@ -12,7 +12,8 @@
     "phpunit/phpunit": "^11.0",
     "fakerphp/faker": "^1.23",
     "larastan/larastan": "^3.0",
-    "laravel/pint": "^1.29"
+    "laravel/pint": "^1.29",
+    "mockery/mockery": "^1.6"
   },
   "autoload": {
     "psr-4": {