fix(widget): register the recent-entries widget in window.openStationWidgets

OpenStation looks up mount callbacks by id in window.openStationWidgets
(window.desktopModeWidgets on older Desktop Mode builds). The widget only
exported render on window.allTerrainFormsWidget, so the shell never found
it and logged a mount failure on every desktop load.

Fixes #59

Author: juanlentino

assets/js/widget.js

@@ -284,6 +284,10 @@ var allTerrainFormsWidget = function(exports) {
       unsubscribe?.();
     };
   }
+  const registryHost = window;
+  const registry = registryHost.openStationWidgets || registryHost.desktopModeWidgets || {};
+  registry["allterrain-forms/recent"] = renderWidget;
+  registryHost.openStationWidgets = registryHost.desktopModeWidgets = registry;
   function mountStandalone() {
     document.querySelectorAll("[data-atfw-root]").forEach((host) => {
       if (host.dataset.atfwMounted) {

assets/js/widget.min.js

@@ -135,12 +135,22 @@ export function renderWidget( host: HTMLElement ): () => void {
  * overwritten a moment later by the bundle itself, which is a bug that only
  * shows up in the built file and never in a test.
  *
- * So the contract is expressed as an export instead: the shell finds
- * `window.allTerrainFormsWidget.render` because `render` is what this module
- * exports.
+ * The export stays for anything that reads that global. The shell itself does
+ * not: OpenStation looks up mount callbacks by widget id in
+ * `window.openStationWidgets` (`window.desktopModeWidgets` on older Desktop
+ * Mode builds), so the callback is registered there too. That is a different
+ * global from the one the IIFE overwrites, so assigning it here is safe.
  */
 export { renderWidget as render };
 
+type WidgetRegistry = Record< string, ( host: HTMLElement ) => ( () => void ) | void >;
+
+// Merge, never replace: other plugins' widgets live in the same object.
+const registryHost = window as unknown as { openStationWidgets?: WidgetRegistry; desktopModeWidgets?: WidgetRegistry };
+const registry: WidgetRegistry = registryHost.openStationWidgets || registryHost.desktopModeWidgets || {};
+registry[ 'allterrain-forms/recent' ] = renderWidget;
+registryHost.openStationWidgets = registryHost.desktopModeWidgets = registry;
+
 /**
  * Mounts into a plain container, for the admin page.
  *