fix: enforce atomic agent registration contract

packages/console/playwright.config.ts

@@ -0,0 +1,28 @@
+import { defineConfig, devices } from '@playwright/test';
+
+export default defineConfig({
+  testDir: './e2e',
+  fullyParallel: false,
+  forbidOnly: Boolean(process.env.CI),
+  retries: process.env.CI ? 2 : 0,
+  workers: 1,
+  reporter: [['list'], ['html', { open: 'never' }]],
+  use: {
+    baseURL: 'http://127.0.0.1:3100',
+    trace: 'retain-on-failure',
+    screenshot: 'only-on-failure',
+    video: 'retain-on-failure',
+  },
+  projects: [
+    {
+      name: 'chromium',
+      use: { ...devices['Desktop Chrome'] },
+    },
+  ],
+  webServer: {
+    command: 'npm run dev -- --hostname 127.0.0.1 --port 3100',
+    url: 'http://127.0.0.1:3100/agents',
+    reuseExistingServer: !process.env.CI,
+    timeout: 120_000,
+  },
+});