Initial commit: NexusArchitect Professional Workstation Overhaul

ejajBook/src/NexusReader.Web.Client/wwwroot/js/focusInterop.js

@@ -0,0 +1,20 @@
+export function attachKeyboardListener(dotNetHelper) {
+    const handler = (e) => {
+        // Exclude inputs, textareas, etc.
+        const activeNode = document.activeElement ? document.activeElement.nodeName.toLowerCase() : '';
+        if (activeNode === 'input' || activeNode === 'textarea') return;
+
+        if (e.key === 'f' || e.key === 'F') {
+            dotNetHelper.invokeMethodAsync('OnFocusKeypressed');
+        }
+    };
+    
+    window.addEventListener('keydown', handler);
+    return handler;
+}
+
+export function detachKeyboardListener(handler) {
+    if (handler) {
+        window.removeEventListener('keydown', handler);
+    }
+}