fix: simplify assistant shortcut

packages/definitions/src/test/hotkeys.spec.ts

@@ -0,0 +1,9 @@
+import { describe, expect, it } from "vitest";
+
+import { hotkeys } from "../hotkeys";
+
+describe("hotkeys", () => {
+  it("uses the discoverable assistant shortcut", () => {
+    expect(hotkeys.openAssistant).toBe("shift+a");
+  });
+});