Fix changelog and release duplication issue

Author: bnimit

.github/workflows/release.yml

@@ -135,20 +135,18 @@ jobs:
             echo "Version v${{ steps.bump_version.outputs.new_version }} already exists in CHANGELOG.md, skipping update"
           else
             # Prepare new entry
-            cat > /tmp/new_entry.md <<EOF
-          ## [v${{ steps.bump_version.outputs.new_version }}] - $(date +%Y-%m-%d)
-
-          EOF
-
+            echo "## [v${{ steps.bump_version.outputs.new_version }}] - $(date +%Y-%m-%d)" > /tmp/new_entry.md
+            echo "" >> /tmp/new_entry.md
             cat /tmp/changelog.md | tail -n +3 >> /tmp/new_entry.md
             echo "" >> /tmp/new_entry.md
 
-            # Insert after the header
-            sed -i '1,/^All notable/r /tmp/new_entry.md' CHANGELOG.md || {
-              # If sed fails (no header found), just prepend
-              cat /tmp/new_entry.md CHANGELOG.md > /tmp/new_changelog.md
-              mv /tmp/new_changelog.md CHANGELOG.md
-            }
+            # Split CHANGELOG into header and content
+            awk '/^All notable changes/{print; print ""; exit}' CHANGELOG.md > /tmp/header.md
+            awk '/^All notable changes/{found=1; next} found' CHANGELOG.md > /tmp/content.md
+
+            # Rebuild CHANGELOG with new entry inserted
+            cat /tmp/header.md /tmp/new_entry.md /tmp/content.md > CHANGELOG.md
+
             echo "Added v${{ steps.bump_version.outputs.new_version }} to CHANGELOG.md"
           fi
 

CHANGELOG.md

@@ -1,28 +1,13 @@
 # Changelog
-## [v2.3.1] - 2026-01-30
-
-### 🔧 Chore
-
-- chore: update dependencies and GitHub Actions to latest versions (456df59)
-
-
-
-## [v2.3.1] - 2026-01-30
-
-### 🔧 Chore
-
-- chore: update dependencies and GitHub Actions to latest versions (456df59)
-
 
 All notable changes to this project will be documented in this file.
+
 ## [v2.3.1] - 2026-01-30
 
 ### 🔧 Chore
 
 - chore: update dependencies and GitHub Actions to latest versions (456df59)
 
-
-
 ## [v2.3.0] - 2025-12-23
 
 ### ✨ Features