feat: rebuild site on Hugo + bonsai theme

Replace the custom Node.js builder with Hugo and the bonsai theme
(added as a submodule at themes/bonsai). Site content moves from
config.yaml into [params] in hugo.toml. CI switched to Hugo Extended
0.154.0 build; daily cron dropped (no API decoration to refresh).
Avatar imported from miti99 project.

.github/workflows/deploy.yml

@@ -3,9 +3,6 @@ name: Deploy to Pages
 on:
   push:
     branches: [main]
-  schedule:
-    # Daily 00:00 UTC — refreshes stars + last-commit decoration on repo links.
-    - cron: "0 0 * * *"
   workflow_dispatch:
 
 permissions:
@@ -18,33 +15,38 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  build-and-deploy:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - id: pages
+        uses: actions/configure-pages@v5
+        with:
+          enablement: true
+
+      - name: Setup Hugo Extended
+        uses: peaceiris/actions-hugo@v3
+        with:
+          hugo-version: '0.154.0'
+          extended: true
+
+      - name: Build
+        run: hugo --gc --minify --baseURL "${{ steps.pages.outputs.base_url }}/"
+
+      - uses: actions/upload-pages-artifact@v3
+        with:
+          path: public
+
+  deploy:
+    needs: build
     runs-on: ubuntu-latest
     environment:
       name: github-pages
       url: ${{ steps.deploy.outputs.page_url }}
     steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-node@v4
-        with:
-          node-version: 20
-          cache: npm
-
-      - run: npm ci
-
-      - name: Build site
-        run: node build.js
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - uses: actions/configure-pages@v5
-        with:
-          enablement: true
-
-      - uses: actions/upload-pages-artifact@v3
-        with:
-          path: _site
-
       - id: deploy
         uses: actions/deploy-pages@v4