fix: Add Gemfile and fix Jekyll build workflow

.github/workflows/pages.yml

@@ -16,24 +16,36 @@ concurrency:
   cancel-in-progress: false
 
 jobs:
+  # Build job
   build:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0  # Fetch all history for proper git info
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.1'
+          bundler-cache: true  # runs 'bundle install' and caches gems
 
       - name: Setup Pages
+        id: pages
         uses: actions/configure-pages@v4
 
       - name: Build with Jekyll
-        uses: actions/jekyll-build-pages@v1
-        with:
-          source: ./
-          destination: ./_site
+        run: bundle exec jekyll build --baseurl "${{ steps.pages.outputs.base_path }}"
+        env:
+          JEKYLL_ENV: production
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./_site
 
+  # Deployment job
   deploy:
     environment:
       name: github-pages

.gitignore

@@ -18,5 +18,13 @@ vite.config.ts.*
 
 # Environment variables
 .env
+
+# Jekyll / GitHub Pages
+/.bundle/
+/vendor/
+/_site/
+/.jekyll-cache/
+/.jekyll-metadata
+Gemfile.lock
 .env.local
 .env.*.local

Gemfile

@@ -0,0 +1,31 @@
+source "https://rubygems.org"
+
+# GitHub Pages gem includes Jekyll and common plugins
+gem "github-pages", "~> 231", group: :jekyll_plugins
+
+# Additional recommended plugins
+group :jekyll_plugins do
+  gem "jekyll-feed", "~> 0.12"
+  gem "jekyll-seo-tag", "~> 2.8"
+  gem "jekyll-sitemap", "~> 1.4"
+end
+
+# Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
+# and associated library.
+platforms :mingw, :x64_mingw, :mswin, :jruby do
+  gem "tzinfo", ">= 1", "< 3"
+  gem "tzinfo-data"
+end
+
+# Performance-booster for watching directories on Windows
+gem "wdm", "~> 0.1", :platforms => [:mingw, :x64_mingw, :mswin]
+
+# Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
+# do not have a Java counterpart.
+gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
+
+# kramdown v2 ships without the gfm parser by default
+gem "kramdown-parser-gfm"
+
+# webrick is no longer bundled with Ruby 3.0+
+gem "webrick", "~> 1.8"