Fix tracability check

.gitea/workflows/traceability-check.yml

@@ -95,20 +95,28 @@ jobs:
           echo ""
 
           # Check each file
-          MISSING_TRACES=0
-          while IFS= read -r file; do
+          # Pipe into the loop instead of a here-string (<<<) so this step works
+          # under POSIX sh/dash, not just bash. Use `case` instead of `[[ == ]]`
+          # for the same reason. The loop runs in a subshell (so a counter var
+          # wouldn't survive), so we record warnings in a temp file and count it
+          # afterwards.
+          MISSING_FILE=$(mktemp)
+          echo "$CHANGED" | while IFS= read -r file; do
             # Skip test files
-            if [[ "$file" == *".test."* ]]; then
-              continue
-            fi
+            case "$file" in
+              *.test.*) continue ;;
+            esac
 
             if [ -f "$file" ]; then
               if ! grep -q "TRACES:" "$file"; then
                 echo "⚠️  Missing TRACES: $file"
-                MISSING_TRACES=$((MISSING_TRACES + 1))
+                echo "$file" >> "$MISSING_FILE"
               fi
             fi
-          done <<< "$CHANGED"
+          done
+
+          MISSING_TRACES=$(wc -l < "$MISSING_FILE" | tr -d ' ')
+          rm -f "$MISSING_FILE"
 
           if [ "$MISSING_TRACES" -gt 0 ]; then
             echo ""