QA: unit tests for API logic, Playwright smoke tests, pre-push check, manual QA checklist

Co-authored-by: Cursor <cursoragent@cursor.com>

e2e/fixtures.ts

@@ -0,0 +1,27 @@
+import { test as base, expect, type Page } from '@playwright/test';
+
+type Problems = { list: string[] };
+
+/** هر خطای جاوااسکریپت یا پاسخ 5xx از API در طول تست، تست را رد می‌کند */
+export const test = base.extend<{ problems: Problems }>({
+  problems: [
+    async ({ page }, use) => {
+      const problems: Problems = { list: [] };
+      page.on('pageerror', (err) => problems.list.push(`JS error: ${err.message}`));
+      page.on('response', (res) => {
+        if (res.url().includes('/api/') && res.status() >= 500) {
+          problems.list.push(`API ${res.status()}: ${res.request().method()} ${res.url()}`);
+        }
+      });
+      await use(problems);
+      expect(problems.list, 'خطا در صفحه').toEqual([]);
+    },
+    { auto: true },
+  ],
+});
+
+export { expect };
+
+export async function waitForIdle(page: Page) {
+  await page.waitForLoadState('networkidle', { timeout: 20_000 }).catch(() => undefined);
+}