fix(gui): prevent AccessibilityHelp dialog from interfering with typing '?' (#322)

The keyboard shortcut Ctrl+Shift+? for opening the accessibility help dialog
was potentially interfering with typing '?' on some keyboard layouts.

Added explicit checks for !e.altKey and !e.metaKey to ensure only the exact
key combination Ctrl+Shift+? triggers the dialog, not any variant that might
occur on different keyboard layouts.

Co-authored-by: Droid Agent <droid@factory.ai>

Author: echobt

cortex-gui/src/components/AccessibilityHelp.tsx

@@ -267,8 +267,10 @@ export function AccessibilityHelp() {
       return;
     }
 
-    // Ctrl+Shift+? to open
-    if (e.ctrlKey && e.shiftKey && e.key === "?") {
+    // Ctrl+Shift+? to open (require ONLY Ctrl+Shift, not Alt or Meta)
+    // Note: We explicitly check for ctrlKey to avoid interfering with typing "?"
+    // which only requires Shift on most keyboard layouts
+    if (e.ctrlKey && e.shiftKey && !e.altKey && !e.metaKey && e.key === "?") {
       e.preventDefault();
       setIsOpen(true);
       return;