Add templates, tests, and miscellaneous project files

Includes new page templates (fitness-gym, nonprofit, online-course,
photography-studio, real-estate, startup-company, travel-blog,
wedding-invitation) with thumbnail SVGs, test specs, documentation
files, and minor updates to index.html, router.php, and playwright config.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tests/media-blocks-verify.spec.js

@@ -0,0 +1,52 @@
+const { test, expect } = require('@playwright/test');
+const { waitForEditor, addBlockById, clearCanvas } = require('./helpers');
+
+test.describe('Media Category Blocks Verification', () => {
+    test('should show Image, Video, and File/PDF blocks in Media category', async ({ page }) => {
+        await waitForEditor(page);
+
+        // Verify all three blocks exist and are in Media category
+        const mediaBlocks = await page.evaluate(() => {
+            const editor = window.editor;
+            const bm = editor.BlockManager;
+            return ['image-block', 'video-block', 'file-embed'].map(id => {
+                const block = bm.get(id);
+                if (!block) return { id, found: false };
+                const cat = block.get('category');
+                return {
+                    id,
+                    found: true,
+                    label: block.get('label'),
+                    category: typeof cat === 'string' ? cat : (cat && cat.id),
+                };
+            });
+        });
+
+        for (const block of mediaBlocks) {
+            expect(block.found).toBe(true);
+            expect(block.category).toBe('Media');
+        }
+
+        console.log('All Media blocks are registered!');
+
+        // Test adding Image block via API
+        const imgResult = await addBlockById(page, 'image-block');
+        expect(imgResult.success).toBe(true);
+
+        const canvas = page.frameLocator('#gjs iframe').first();
+        const img = canvas.locator('img');
+        await expect(img).toBeVisible({ timeout: 3000 });
+        console.log('Image block added successfully');
+
+        // Clear canvas
+        await clearCanvas(page);
+
+        // Test adding Video block via API
+        const vidResult = await addBlockById(page, 'video-block');
+        expect(vidResult.success).toBe(true);
+
+        const videoWrapper = canvas.locator('.video-wrapper');
+        await expect(videoWrapper).toBeVisible({ timeout: 3000 });
+        console.log('Video block added successfully');
+    });
+});