test: Add playwright main usage test

electron/preload.ts

@@ -211,6 +211,7 @@ export interface ElectronAPI {
   ensureDir: (dirPath: string) => Promise<boolean>;
 
   onContextMenu: (listener: (params: ContextMenuParams) => void) => () => void;
+  contextMenuCommand: (command: string) => Promise<void>;
   copyImageToClipboard: (srcURL: string) => Promise<boolean>;
 
   command: <T = unknown>(command: Command) => Promise<T>;
@@ -329,6 +330,7 @@ const electronAPI: ElectronAPI = {
       ipcRenderer.removeListener('show-context-menu', wrappedListener);
     };
   },
+  contextMenuCommand: (command) => ipcRenderer.invoke('context-menu-command', command),
   copyImageToClipboard: (srcURL) => ipcRenderer.invoke('copy-image-to-clipboard', srcURL),
 
   command: (command) => ipcRenderer.invoke('cqrs:command', command),