feat: complete Epic 1 production foundation

apps/ui/tests/e2e/agents.spec.js

@@ -11,6 +11,9 @@ test('agents page shows demo cards and edit drawer opens', async ({ page }) => {
   await expect(page.locator('.agent-card-date').first()).toContainText(
     localized('Set this endpoint', 'Данный эндпоинт')
   );
+  await expect(page.locator('.agent-card-date').filter({
+    hasText: localized('Catalog rev', 'Ревизия каталога'),
+  }).first()).toBeVisible();
   await page.getByRole('button', { name: localized('New agent', 'Новый агент') }).click();
   await expect(page.locator('.drawer-title')).toHaveText(localized('New agent', 'Новый агент'));
   await expect(page.locator('.drawer-subtitle')).toContainText(
@@ -40,7 +43,45 @@ test('agent drawer configures on-demand tool discovery and catalog sections', as
   await expect(group.locator('input').nth(1)).toHaveValue('finance');
   await expect(page.locator('.tool-search-preview')).toBeVisible();
   await page.locator('.tool-group-chip').first().click();
-  await page.locator('.tool-search-preview input').fill('currency rate');
+  await page.locator('.tool-search-preview input').fill('frankfurter_latest_rate');
   await page.locator('.tool-search-preview .btn-primary-sm').click();
   await expect(page.locator('.tool-search-result').first()).toBeVisible();
 });
+
+test('agent lifecycle stale conflict shows localized recovery message', async ({ page }) => {
+  await login(page);
+  await page.goto('/agents');
+  await expect(page.locator('.agent-card').first()).toBeVisible();
+
+  await page.route(/\/api\/admin\/workspaces\/[^/]+\/agents\/[^/]+\/unpublish$/, async (route) => {
+    await route.fulfill({
+      status: 409,
+      contentType: 'application/json',
+      headers: {
+        'x-request-id': '01a00000-0000-7000-8000-000000000001',
+        'x-trace-id': '01a00000000070008000000000000001',
+      },
+      body: JSON.stringify({
+        error: {
+          code: 'conflict',
+          message: 'agent changed',
+          context: {
+            error_code: 'agent_stale_revision',
+          },
+        },
+      }),
+    });
+  });
+
+  page.once('dialog', async (dialog) => {
+    expect(dialog.message()).toMatch(localized('Unpublish', 'Снять'));
+    await dialog.accept();
+  });
+  await page.getByRole('button', { name: localized('Unpublish', 'Снять с публикации') }).first().click();
+  await expect(page.locator('.toast-error')).toContainText(
+    localized(
+      'Agent changed in another request. Reload the drawer and retry.',
+      'Агент изменился в другом запросе. Перезагрузите форму и повторите действие.',
+    ),
+  );
+});