feat(cookbook): wire Cookbook section into PDF/EPUB/WebPub pipeline

The Cookbook section was added as web content only. Other product
sections (cli/vfm/themes/viewer/reference) all expose PDF / EPUB /
WebPub downloads in the sidebar via <DownloadLinks>; cookbook had
neither the build configuration nor the download UI. Add both so
cookbook articles are available in the same multi-format set.

- Add vivliostyle.config-cookbook-{en,ja}.js modeled after the
  reference configs. Entry list covers index + 3 cookbook articles
  (footnotes / cmyk / page-groups). Outputs go to:
    public/downloads/vivliostyle-cookbook-{en,ja}.pdf
    public/downloads/vivliostyle-cookbook-{en,ja}.epub
    public/publications/cookbook-{en,ja}/

- vivliostyle.config-shared.js: extend the PRODUCTS array (and the
  JSDoc type) to include 'cookbook' so getCopyAssetExcludes
  correctly excludes other-product paths from cookbook builds and
  vice versa.

- DownloadLinks.astro / LiveView.astro: extend the product type
  union with 'cookbook' and add the fileBase entry
  ('vivliostyle-cookbook') so DownloadLinks resolves to the right
  PDF/EPUB filenames and LiveView builds the right webpub manifest
  URL.

- src/pages/{en,ja}/cookbook/[...slug].astro: import DownloadLinks
  and place <DownloadLinks product="cookbook" lang=…> inside
  <nav slot="sidebar"> after the entry list, matching the cli /
  themes / vfm / viewer slug layouts.

- package.json: add build:vivliostyle:cookbook-{en,ja} scripts and
  append them to the build:vivliostyle chain so CI's existing
  build:formats step generates cookbook outputs alongside the
  other products.

Verified locally that build:vivliostyle:cookbook-en produces a
2.9 MB PDF, a 4.4 MB EPUB, and the webpub directory cleanly.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ogwata

package.json

@@ -11,7 +11,7 @@
     "test:watch": "vitest",
     "optimize:images": "node scripts/optimize-images.mjs",
     "fix:epub-paths": "node scripts/fix-epub-paths.mjs",
-    "build:vivliostyle": "npm run build:vivliostyle:cli-ja && npm run build:vivliostyle:cli-en && npm run build:vivliostyle:vfm-ja && npm run build:vivliostyle:vfm-en && npm run build:vivliostyle:themes-ja && npm run build:vivliostyle:themes-en && npm run build:vivliostyle:viewer-ja && npm run build:vivliostyle:viewer-en && npm run build:vivliostyle:reference-ja && npm run build:vivliostyle:reference-en",
+    "build:vivliostyle": "npm run build:vivliostyle:cli-ja && npm run build:vivliostyle:cli-en && npm run build:vivliostyle:vfm-ja && npm run build:vivliostyle:vfm-en && npm run build:vivliostyle:themes-ja && npm run build:vivliostyle:themes-en && npm run build:vivliostyle:viewer-ja && npm run build:vivliostyle:viewer-en && npm run build:vivliostyle:reference-ja && npm run build:vivliostyle:reference-en && npm run build:vivliostyle:cookbook-ja && npm run build:vivliostyle:cookbook-en",
     "build:formats": "npm run build:vivliostyle && npm run fix:epub-paths",
     "build:vivliostyle:cli-ja": "vivliostyle build -c vivliostyle.config-cli-ja.js",
     "build:vivliostyle:cli-en": "vivliostyle build -c vivliostyle.config-cli-en.js",
@@ -23,6 +23,8 @@
     "build:vivliostyle:viewer-en": "vivliostyle build -c vivliostyle.config-viewer-en.js",
     "build:vivliostyle:reference-ja": "vivliostyle build -c vivliostyle.config-reference-ja.js",
     "build:vivliostyle:reference-en": "vivliostyle build -c vivliostyle.config-reference-en.js",
+    "build:vivliostyle:cookbook-ja": "vivliostyle build -c vivliostyle.config-cookbook-ja.js",
+    "build:vivliostyle:cookbook-en": "vivliostyle build -c vivliostyle.config-cookbook-en.js",
     "build:all": "npm run build && npm run build:formats && npm run copy:formats-to-dist",
     "copy:formats-to-dist": "mkdir -p dist/downloads dist/publications && cp -R public/downloads/. dist/downloads/ && cp -R public/publications/. dist/publications/",
     "regenerate:symbol-fonts": "python3 scripts/regenerate-symbol-fonts.py"

src/components/DownloadLinks.astro

@@ -6,7 +6,7 @@
 import LiveView from './LiveView.astro';
 
 interface Props {
-  product: 'cli' | 'vfm' | 'themes' | 'viewer' | 'reference';
+  product: 'cli' | 'vfm' | 'themes' | 'viewer' | 'reference' | 'cookbook';
   lang: 'en' | 'ja';
 }
 
@@ -18,6 +18,7 @@ const fileBase: Record<Props['product'], string> = {
   themes: 'vivliostyle-themes',
   viewer: 'vivliostyle-viewer',
   reference: 'vivliostyle-reference',
+  cookbook: 'vivliostyle-cookbook',
 };
 
 const pdfHref = `/downloads/${fileBase[product]}-${lang}.pdf`;

src/components/LiveView.astro

@@ -13,7 +13,7 @@
  *   4. ユーザーは Viewer 内のツールバーで印刷 → ブラウザの「PDFで保存」が使える
  */
 interface Props {
-  product: 'cli' | 'vfm' | 'themes' | 'viewer' | 'reference';
+  product: 'cli' | 'vfm' | 'themes' | 'viewer' | 'reference' | 'cookbook';
   lang: 'en' | 'ja';
 }
 

src/pages/en/cookbook/[...slug].astro

@@ -7,6 +7,7 @@ import DocsLayout from '../../../layouts/DocsLayout.astro';
 import LanguageSwitcher from '../../../components/LanguageSwitcher.astro';
 import PageNavigation from '../../../components/PageNavigation.astro';
 import SidebarTocHeadings from '../../../components/SidebarTocHeadings.astro';
+import DownloadLinks from '../../../components/DownloadLinks.astro';
 import { getCollection } from 'astro:content';
 
 export async function getStaticPaths() {
@@ -80,6 +81,7 @@ const nextPage = currentIndex < sortedDocs.length - 1 ? sortedDocs[currentIndex
         );
       })}
     </ul>
+    <DownloadLinks product="cookbook" lang="en" />
   </nav>
 
   <article set:html={htmlContent} />

src/pages/ja/cookbook/[...slug].astro

@@ -7,6 +7,7 @@ import DocsLayout from '../../../layouts/DocsLayout.astro';
 import LanguageSwitcher from '../../../components/LanguageSwitcher.astro';
 import PageNavigation from '../../../components/PageNavigation.astro';
 import SidebarTocHeadings from '../../../components/SidebarTocHeadings.astro';
+import DownloadLinks from '../../../components/DownloadLinks.astro';
 import { getCollection } from 'astro:content';
 
 export async function getStaticPaths() {
@@ -78,6 +79,7 @@ const nextPage = currentIndex < sortedDocs.length - 1 ? sortedDocs[currentIndex
         );
       })}
     </ul>
+    <DownloadLinks product="cookbook" lang="ja" />
   </nav>
 
   <article set:html={htmlContent} />

vivliostyle.config-cookbook-en.js

@@ -0,0 +1,26 @@
+import { getCopyAssetExcludes, transformSectionList, transformDocumentList } from './vivliostyle.config-shared.js';
+
+export default {
+  title: 'Vivliostyle Cookbook',
+  author: 'Vivliostyle Foundation',
+  language: 'en',
+  size: 'A4',
+  theme: './packages/theme-PDF',
+  entryContext: 'dist',
+  entry: [
+    'en/cookbook/index.html',
+    'en/cookbook/footnotes/index.html',
+    'en/cookbook/cmyk/index.html',
+    'en/cookbook/page-groups/index.html',
+  ],
+  output: [
+    { path: 'public/downloads/vivliostyle-cookbook-en.pdf', format: 'pdf' },
+    { path: 'public/downloads/vivliostyle-cookbook-en.epub', format: 'epub' },
+    { path: 'public/publications/cookbook-en', format: 'webpub' },
+  ],
+  workspaceDir: '.vivliostyle/cookbook-en',
+  toc: { sectionDepth: 3, transformSectionList, transformDocumentList },
+  copyAsset: {
+    excludes: getCopyAssetExcludes({ product: 'cookbook', lang: 'en' }),
+  },
+};

vivliostyle.config-cookbook-ja.js

@@ -0,0 +1,26 @@
+import { getCopyAssetExcludes, transformSectionList, transformDocumentList } from './vivliostyle.config-shared.js';
+
+export default {
+  title: 'Vivliostyle 活用ガイド',
+  author: 'Vivliostyle Foundation',
+  language: 'ja',
+  size: 'A4',
+  theme: './packages/theme-PDF',
+  entryContext: 'dist',
+  entry: [
+    'ja/cookbook/index.html',
+    'ja/cookbook/footnotes/index.html',
+    'ja/cookbook/cmyk/index.html',
+    'ja/cookbook/page-groups/index.html',
+  ],
+  output: [
+    { path: 'public/downloads/vivliostyle-cookbook-ja.pdf', format: 'pdf' },
+    { path: 'public/downloads/vivliostyle-cookbook-ja.epub', format: 'epub' },
+    { path: 'public/publications/cookbook-ja', format: 'webpub' },
+  ],
+  workspaceDir: '.vivliostyle/cookbook-ja',
+  toc: { sectionDepth: 3, transformSectionList, transformDocumentList },
+  copyAsset: {
+    excludes: getCopyAssetExcludes({ product: 'cookbook', lang: 'ja' }),
+  },
+};

vivliostyle.config-shared.js

@@ -12,14 +12,14 @@
  * Vivliostyle CLI コールバック。
  */
 
-const PRODUCTS = ['cli', 'vfm', 'themes', 'viewer', 'reference'];
+const PRODUCTS = ['cli', 'vfm', 'themes', 'viewer', 'reference', 'cookbook'];
 const ALL_LANGUAGES = ['en', 'ja'];
 
 /**
  * 指定したプロダクト・言語のビルドで copyAsset から除外すべきパスを返す。
  * パターンは entryContextDir (= `dist/`) からの相対 glob。
  *
- * @param {{ product: 'cli'|'vfm'|'themes'|'viewer'|'reference', lang: 'en'|'ja' }} options
+ * @param {{ product: 'cli'|'vfm'|'themes'|'viewer'|'reference'|'cookbook', lang: 'en'|'ja' }} options
  */
 export function getCopyAssetExcludes({ product, lang }) {
   const otherLanguages = ALL_LANGUAGES.filter((l) => l !== lang);