chore: add app test

Author: damassi

src/__tests__/App.test.tsx

@@ -0,0 +1,21 @@
+import React from "react"
+import { render } from "ink-testing-library"
+import { test, expect, describe, mock } from "bun:test"
+import { App } from "../App"
+import { AgentStore } from "../store"
+
+mock.module("../hooks/useConfig", () => ({
+  useConfig: mock(() => {}),
+}))
+
+describe("App", () => {
+  test("should render null when not booted", () => {
+    const { lastFrame } = render(
+      <AgentStore.Provider>
+        <App />
+      </AgentStore.Provider>
+    )
+
+    expect(lastFrame()).toBe("")
+  })
+})