fix: improve version extraction logic in release workflow

.gitea/workflows/release.yml

@@ -20,10 +20,14 @@ jobs:
       - name: Extract version from CHANGELOG
         id: changelog
         run: |
-          # Extract first non-empty line that starts with a version (e.g., v1.2.3 or 1.2.3)
-          LATEST=$(grep -E '^[v]?[0-9]+\.[0-9]+\.[0-9]+' CHANGELOG.md | head -n1)
-          echo "Latest version found: $LATEST"
+          LATEST=$(grep -E '^## \[(.*)\]' CHANGELOG.md | grep -v '\[Unreleased\]' | head -n1 | sed -E 's/^## \[([^\]]+)\].*/\1/')
+          if [ -z "$LATEST" ]; then
+            echo "No released version found in CHANGELOG.md"
+            exit 1
+          else
+            echo "Released version found: $LATEST"
             echo "version=$LATEST" >> $GITHUB_OUTPUT
+          fi
 
       # Create Release also creates an Tag
       # - name: Create git tag