UX enhancements on data views

website/js/test-data.js

@@ -0,0 +1,34 @@
+/** Dev fixture prefixes (import script / dev_fixture.php). */
+export function isDevTestClientCode(code) {
+    const c = String(code ?? '').trim();
+    return c.toUpperCase().startsWith('DEV-CL-');
+}
+
+export function isDevTestUsername(username) {
+    return String(username ?? '').trim().toLowerCase().startsWith('dev_');
+}
+
+export function testDataRowClassForClient(clientCode) {
+    return isDevTestClientCode(clientCode) ? ' row-test-data' : '';
+}
+
+export function testDataRowClassForUser(username) {
+    return isDevTestUsername(username) ? ' row-test-data' : '';
+}
+
+/** Local question key from full questionID (hash__q5 → q5). */
+export function questionLocalKey(questionID, fallback = '') {
+    const id = String(questionID ?? '');
+    const sep = id.lastIndexOf('__');
+    if (sep >= 0) return id.slice(sep + 2);
+    return fallback || id;
+}
+
+/** header_order.json column id → question key (questionnaire_x-y → y). */
+export function headerColumnQuestionKey(headerId) {
+    const id = String(headerId ?? '');
+    if (id === 'client_code') return 'client_code';
+    const dash = id.indexOf('-');
+    if (dash < 0) return id;
+    return id.slice(dash + 1);
+}