test(e2e): fix failing playwright tests by mocking electron ipc and api calls

- Updated `e2e/basic.spec.ts` to inject a mock `window.ipcRenderer` and `window.apm_store` on test startup. Playwright connects to the Vite dev server via standard Chromium, which previously caused the app to crash due to missing Electron contexts.
- Added `page.route` intercepts to return valid mock data for categories and apps, ensuring that components like `.app-card` actually render in the E2E environment instead of being stuck in a loading state or failing.
- Removed arbitrary timeouts and `127.0.0.1:3344` URL.

mock_test.spec.ts

@@ -0,0 +1,11 @@
+import { test, expect } from "@playwright/test";
+
+test("mock test", async ({ page }) => {
+  page.on('console', msg => console.log('PAGE LOG:', msg.text()));
+  page.on('pageerror', exception => {
+      console.log(`Uncaught exception: "${exception}"`);
+  });
+
+  await page.goto("http://localhost:5173/");
+  await page.waitForTimeout(2000);
+});