feat(cms,asset): add comprehensive test suite and finalize modules

- Add comprehensive test suite for CMS and Asset modules using Pest Framework
- Implement ContentTypeService::delete() protection against deletion of in-use content types
- Add CannotDeleteContentTypeInUseException for better error handling
- Fix DerivatPipelineRegistry::getAllPipelines() to handle object uniqueness correctly
- Fix VariantName::getScale() to correctly parse scales with file extensions
- Update CMS module documentation with new features, exceptions, and test coverage
- Add CmsTestHelpers and AssetTestHelpers for test data factories
- Fix BlockTypeRegistry to be immutable after construction
- Update ContentTypeService to check for associated content before deletion
- Improve BlockRendererRegistry initialization

Test coverage:
- Value Objects: All CMS and Asset value objects
- Services: ContentService, ContentTypeService, SlugGenerator, BlockValidator, ContentLocalizationService, AssetService, DeduplicationService, MetadataExtractor
- Repositories: All database repositories with mocked connections
- Rendering: Block renderers and ContentRenderer
- Controllers: API endpoints for both modules

254 tests passing, 38 remaining (mostly image processing pipeline tests)

tests/Unit/Domain/Cms/Rendering/DefaultBlockRendererTest.php

@@ -0,0 +1,66 @@
+<?php
+
+declare(strict_types=1);
+
+use App\Domain\Cms\Rendering\DefaultBlockRenderer;
+use App\Domain\Cms\ValueObjects\BlockData;
+use App\Domain\Cms\ValueObjects\BlockId;
+use App\Domain\Cms\ValueObjects\BlockSettings;
+use App\Domain\Cms\ValueObjects\BlockType;
+use App\Domain\Cms\ValueObjects\ContentBlock;
+
+describe('DefaultBlockRenderer', function () {
+    it('renders any block type as generic block', function () {
+        $renderer = new DefaultBlockRenderer();
+        $block = ContentBlock::create(
+            type: BlockType::fromString('custom-block'),
+            blockId: BlockId::fromString('custom-1'),
+            data: BlockData::fromArray(['key' => 'value'])
+        );
+
+        $result = $renderer->render($block);
+
+        expect($result)->toHaveKeys(['component', 'data']);
+        expect($result['component'])->toBe('cms/block');
+        expect($result['data']['blockType'])->toBe('custom-block');
+        expect($result['data']['blockId'])->toBe('custom-1');
+        expect($result['data']['data'])->toBe(['key' => 'value']);
+    });
+
+    it('renders block with settings', function () {
+        $renderer = new DefaultBlockRenderer();
+        $block = ContentBlock::create(
+            type: BlockType::fromString('custom-block'),
+            blockId: BlockId::fromString('custom-1'),
+            data: BlockData::fromArray(['key' => 'value']),
+            settings: BlockSettings::fromArray(['setting' => 'value'])
+        );
+
+        $result = $renderer->render($block);
+
+        expect($result['data']['settings'])->toBe(['setting' => 'value']);
+    });
+
+    it('renders block without settings', function () {
+        $renderer = new DefaultBlockRenderer();
+        $block = ContentBlock::create(
+            type: BlockType::fromString('custom-block'),
+            blockId: BlockId::fromString('custom-1'),
+            data: BlockData::fromArray(['key' => 'value'])
+        );
+
+        $result = $renderer->render($block);
+
+        expect($result['data']['settings'])->toBe([]);
+    });
+
+    it('supports all block types', function () {
+        $renderer = new DefaultBlockRenderer();
+
+        expect($renderer->supports('hero'))->toBeTrue();
+        expect($renderer->supports('text'))->toBeTrue();
+        expect($renderer->supports('custom-block'))->toBeTrue();
+        expect($renderer->supports('any-type'))->toBeTrue();
+    });
+});
+