Initial baseline: LaraBlog core with plugin commerce surface.

Captures the current working tree after theme slots, ArticleAccess, and the payment / paid-content plugins so subsequent work has a reviewable git history.

tests/Unit/ContentTocTest.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit;
+
+use App\Domain\Blog\ContentFormat;
+use App\Domain\Blog\ContentRenderer;
+use Tests\TestCase;
+
+class ContentTocTest extends TestCase
+{
+    public function test_markdown_headings_produce_toc_and_ids(): void
+    {
+        $markdown = <<<'MD'
+Intro paragraph.
+
+## First Section
+
+Hello.
+
+### Nested
+
+More.
+
+## Second Section
+
+End.
+MD;
+
+        $result = app(ContentRenderer::class)->render($markdown, ContentFormat::MARKDOWN);
+
+        $this->assertCount(3, $result['toc']);
+        $this->assertSame('First Section', $result['toc'][0]['text']);
+        $this->assertSame(2, $result['toc'][0]['level']);
+        $this->assertSame('Nested', $result['toc'][1]['text']);
+        $this->assertSame(3, $result['toc'][1]['level']);
+        $this->assertStringContainsString('id="', $result['html']);
+        $this->assertStringContainsString($result['toc'][0]['id'], $result['html']);
+    }
+}