🐛 fix: cross-platform sed and badge replacement issues

scripts/ci-update-coverage-badge.sh

@@ -71,7 +71,17 @@ if [ "$BADGE_TYPE" = "bdd" ] || [ "$BADGE_TYPE" = "unit" ]; then
         $SED_CMD "s|https://img.shields.io/badge/${BADGE_TYPE}_Coverage-.*-.*?style=flat-square|${BADGE_URL}|" README.md
     else
         # Add new badge line after the main coverage badge
-        $SED_CMD "/coverage-.*-.*?style=flat-square/a\\n${BADGE_URL}" README.md
+        # Use a more reliable approach with temporary file for cross-platform compatibility
+        TEMP_FILE=$(mktemp)
+        awk -v new_badge="${BADGE_URL}" '
+        /coverage-.*-.*?style=flat-square/ {
+            print $0
+            print new_badge
+            next
+        }
+        {print}
+        ' README.md > "$TEMP_FILE"
+        mv "$TEMP_FILE" README.md
     fi
 else
     # For combined coverage, use the original logic