Add commit hash to the page for better traceability and reference in the Hugo site.

.gitea/workflows/publish.yaml

@@ -26,6 +26,12 @@ jobs:
       - name: Build
         run: hugo --minify
 
+      - name: Replace [commit] with short commit hash and hyperlink
+        run: |
+          SHORT_COMMIT=$(git rev-parse --short HEAD)
+          COMMIT_URL="https://git.ericxliu.me/eric/ericxliu-me/commit/$SHORT_COMMIT"
+          find ./public -type f -exec sed -i "s|\[commit\]|<a href=\"$COMMIT_URL\">$SHORT_COMMIT</a>|g" {} +
+
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v4
         with: