test(web): add Playwright config and dashboard smoke test

surfsense_web/tests/dashboard.spec.ts

@@ -0,0 +1,21 @@
+import { expect, test } from "@playwright/test";
+
+/**
+ * Tracer-bullet test: proves the entire E2E pipeline works end-to-end.
+ *
+ * Verifies:
+ *   - Web server is reachable
+ *   - Auth setup ran successfully (storageState contains valid token)
+ *   - Dashboard route renders for an authenticated user
+ *
+ * Keep this test minimal. Product-specific behaviour belongs in dedicated
+ * spec files (new-chat, search-spaces, editor-panel, etc.).
+ */
+test.describe("Dashboard", () => {
+	test("loads dashboard with sidebar navigation for authenticated user", async ({ page }) => {
+		await page.goto("/dashboard");
+
+		await expect(page).toHaveURL(/\/dashboard/);
+		await expect(page.getByRole("navigation").first()).toBeVisible();
+	});
+});