Add real CSS module status reporting

modules/css.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-set -euo pipefail
+set -u
 
 echo "========================"
 echo " Davidson CI - CSS"
@@ -7,8 +7,13 @@ echo "========================"
 
 CSS_COUNT="${DAVIDSON_CSS_COUNT:-0}"
 
+set_status() {
+    echo "DAVIDSON_CSS_STATUS=$1" >> "${GITHUB_ENV:-/dev/null}"
+}
+
 if [ "$CSS_COUNT" -eq 0 ]; then
     echo "No CSS files detected - skipping CSS module"
+    set_status "SKIP"
     exit 0
 fi
 
@@ -16,15 +21,28 @@ echo
 echo "CSS files detected: $CSS_COUNT"
 echo
 
+FAIL=0
+
 echo "→ CSS lint"
 
 if [ -f package.json ] && \
    node -e "let p=require('./package.json'); process.exit(p.scripts?.['lint:css'] ? 0 : 1)"
 then
-    npm run lint:css
+    if ! npm run lint:css; then
+        FAIL=1
+    fi
 else
     echo "No lint:css script configured - skipping"
 fi
 
-echo
-echo "CSS module completed successfully"
+if [ "$FAIL" -eq 0 ]; then
+    set_status "PASS"
+    echo
+    echo "CSS module completed successfully"
+    exit 0
+else
+    set_status "FAIL"
+    echo
+    echo "CSS module failed"
+    exit 1
+fi