big restructure

web/js/components/app-bulk-selection.js

@@ -1,3 +1,5 @@
+import { warnOnce } from '../core/app-dom.js';
+
 export function bindBulkVisibility({
   containerSelector,
   buttonSelector,
@@ -5,7 +7,15 @@ export function bindBulkVisibility({
 } = {}) {
   const container = document.querySelector(containerSelector);
   const buttons = Array.from(document.querySelectorAll(buttonSelector));
-  if (!container || !buttons.length) return { update: () => {} };
+  if (!container || !buttons.length) {
+    if (!container) {
+      warnOnce('UI_EL_MISSING', `Missing bulk container: ${containerSelector}`, { module: 'bulk-selection' });
+    }
+    if (!buttons.length) {
+      warnOnce('UI_EL_MISSING', `Missing bulk buttons: ${buttonSelector}`, { module: 'bulk-selection' });
+    }
+    return { update: () => {} };
+  }
 
   const update = () => {
     const selected = container.querySelectorAll(selectedRowSelector).length > 0;