Swap alt for ctrl/meta key

frontend/src/views/main.ts

@@ -581,7 +581,7 @@ export class MainView extends View {
     }
     
     private handleHotkey(e: KeyboardEvent) {
-        if (e.altKey) {
+        if (e.ctrlKey || e.metaKey) {
             const action = this.hotkeyMap.get(e.key);
             if (action) {
                 e.preventDefault();