Migrate website from static HTML to Hugo with i18n support

- Replace flat HTML pages with Hugo template engine
- Extract shared nav, footer, head, background into partials
- Add i18n support for 4 languages: EN, 简体中文, 繁體中文, 日本語
- Add language switcher dropdown in footer
- Add GitHub Actions workflow for Hugo build and deploy
- Move static assets (css, js, images) to static/ directory

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: windcbf

.github/workflows/hugo.yml

@@ -0,0 +1,59 @@
+name: Deploy Hugo site to Pages
+
+on:
+  push:
+    branches: ["main"]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      HUGO_VERSION: 0.159.2
+    steps:
+      - name: Install Hugo CLI
+        run: |
+          wget -O ${{ runner.temp }}/hugo.deb https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.deb \
+          && sudo dpkg -i ${{ runner.temp }}/hugo.deb
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Pages
+        id: pages
+        uses: actions/configure-pages@v5
+      - name: Build with Hugo
+        env:
+          HUGO_CACHEDIR: ${{ runner.temp }}/hugo_cache
+          HUGO_ENVIRONMENT: production
+        run: |
+          hugo \
+            --gc \
+            --minify \
+            --baseURL "${{ steps.pages.outputs.base_url }}/"
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./public
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4

.gitignore

@@ -0,0 +1,3 @@
+public/
+.hugo_build.lock
+resources/_gen/

archetypes/default.md

@@ -0,0 +1,5 @@
++++
+date = '{{ .Date }}'
+draft = true
+title = '{{ replace .File.ContentBaseName "-" " " | title }}'
++++