refactor: workspace manager (#5060)

tests/affine-local/e2e/router.spec.ts

@@ -20,6 +20,7 @@ test('goto not found workspace', async ({ page }) => {
   // if doesn't wait for timeout, data won't be saved into indexedDB
   await page.waitForTimeout(1000);
   await page.goto(new URL('/workspace/invalid/all', coreUrl).toString());
-  await page.waitForTimeout(3000);
-  expect(page.url()).toBe(new URL('/404', coreUrl).toString());
+  await expect(page.getByTestId('not-found')).toBeVisible({
+    timeout: 10000,
+  });
 });