feat: add Pagefind search and production build minification

Add full-text search via Pagefind with a floating action button (FAB)
and modal popup, bilingual FR/EN translations, keyboard shortcut
(Ctrl+K). Minify HTML (html-minifier-terser), CSS and JS (esbuild)
in production builds for ~35% smaller assets.

Author: Daihyxsk (Dx)

.eleventy.js

@@ -1,8 +1,28 @@
 // SPDX-License-Identifier: MIT
+const htmlmin = require("html-minifier-terser");
+
+const isProd = process.env.NODE_ENV === "production";
+
 module.exports = function(eleventyConfig) {
   eleventyConfig.addPassthroughCopy("src/assets");
   eleventyConfig.addPassthroughCopy("src/CNAME");
 
+  if (isProd) {
+    eleventyConfig.addTransform("htmlmin", async function(content) {
+      if ((this.page.outputPath || "").endsWith(".html")) {
+        return await htmlmin.minify(content, {
+          collapseWhitespace: true,
+          conservativeCollapse: true,
+          removeComments: true,
+          minifyCSS: true,
+          minifyJS: true,
+          ignoreCustomFragments: [/<%[\s\S]*?%>/, /<pre[\s\S]*?<\/pre>/]
+        });
+      }
+      return content;
+    });
+  }
+
   return {
     dir: {
       input: "src",

cspell-words.txt

@@ -44,8 +44,11 @@ monorepos
 polyrepo
 Eleventy
 Nunjucks
+Pagefind
+pagefind
 frontmatter
 cspell
+keydown
 husky
 pre-commit
 rebaser