fix: remove frontmatter

scripts/prepare-markdown-for-ebook.sh

@@ -17,9 +17,20 @@ fi
 export date="${DATE:-$(date +%F)}"
 export version="${VERSION?error: VERSION must be set}"
 
+
 # Update the input file to an intermedate.
 intermediate="${input}.temp"
-DATE="${date}" VERSION="${version}" envsubst < "${input}" > "${intermediate}"
+cat <<EOF > "${intermediate}"
+---
+title: "Hacker Laws"
+author: "Dave Kerr, github.com/dwmkerr/hacker-laws"
+subtitle: "Laws, Theories, Principles, and Patterns that developers will find useful. ${VERSION}, ${DATE}."
+version: ${VERSION}
+---
+
+EOF
+cat "${input}" >> "${intermediate}"
+DATE="${date}" VERSION="${version}" envsubst < "${intermediate}" > "${output}"
 
 # Use a single `sed` command to clean up unwanted lines and emojis in one pass.
 sed      -e '/💻📖.*/d' \
@@ -27,7 +38,7 @@ sed      -e '/💻📖.*/d' \
          -e '/^\[Translations.*/d' \
          -e '/\*.*/d' \
          -e '/    \*.*/d' \
-         -e '/## Translations/,$d' "${intermediate}" > "${output}"
-rm "${intermediate}"
+         -e '/## Translations/,$d' "${output}" > "${intermediate}"
+mv "${intermediate}" "${output}"
 
 echo "${output} prepared successfully."