feat: moved html code for macros to templates

tests/engine/PageRenderer.macros.test.ts

@@ -0,0 +1,57 @@
+import { describe, expect, it } from 'vitest';
+import type { MediaData } from '../../src/main/engine/MediaEngine';
+import {
+  renderMacro,
+  resolveMacroTemplateRoots,
+} from '../../src/main/engine/PageRenderer';
+
+function createMedia(overrides?: Partial<MediaData>): MediaData {
+  return {
+    id: 'media-1',
+    filename: 'photo.jpg',
+    originalName: 'photo.jpg',
+    mimeType: 'image/jpeg',
+    size: 1024,
+    createdAt: new Date('2026-02-20T10:00:00.000Z'),
+    updatedAt: new Date('2026-02-20T10:00:00.000Z'),
+    tags: [],
+    ...overrides,
+  };
+}
+
+describe('PageRenderer macro template roots', () => {
+  it('includes macros subfolder for packaged app builds', () => {
+    const roots = resolveMacroTemplateRoots({
+      moduleDir: '/Applications/Blogging Desktop Server.app/Contents/Resources/app.asar/dist/main/engine',
+      cwd: '/tmp/runtime-cwd',
+      resourcesPath: '/Applications/Blogging Desktop Server.app/Contents/Resources',
+    });
+
+    expect(roots).toContain('/Applications/Blogging Desktop Server.app/Contents/Resources/templates/macros');
+  });
+});
+
+describe('PageRenderer macros', () => {
+  it('renders youtube macro html', () => {
+    const html = renderMacro('youtube', { id: 'abc123' }, '', [], null, [], 'en');
+    expect(html).toContain('class="macro-youtube"');
+    expect(html).toContain('https://www.youtube.com/embed/abc123?rel=0');
+  });
+
+  it('renders gallery macro html from linked media', () => {
+    const media = createMedia({ id: 'm-1' });
+
+    const html = renderMacro(
+      'gallery',
+      { columns: '4' },
+      'post-1',
+      [media],
+      new Set<string>(['m-1']),
+      [],
+      'en',
+    );
+
+    expect(html).toContain('class="macro-gallery gallery-cols-4"');
+    expect(html).toContain('class="gallery-item"');
+  });
+});