fix: add workflow step to escape nested quotes in post titles

.gitea/workflows/publish.yaml

@@ -23,6 +23,14 @@ jobs:
           submodules: true # Fetch Hugo themes (true OR recursive)
           fetch-depth: 0 # Fetch all history for .GitInfo and .Lastmod
 
+      - name: Fix nested quotes in post titles
+        run: |
+          # Find markdown files with titles containing at least 3 double quotes (indicating nesting)
+          # and replace internal double quotes with single quotes.
+          find content -type f -name "*.md" -print0 | \
+            xargs -0 grep -lZ '^title: .*".*".*"' | \
+            xargs -0 -r sed -i "/^title: \"/{s/\"/\\\\\"/g;s/^\(title: *\)\\\\\"/\1\"/;s/\\\\\" *$/\"/;}"
+
       - name: Build site with Hugo
         uses: peaceiris/actions-hugo@v3
         with: