chore: import upstream snapshot with attribution

showcase/integrations/langgraph-python/playwright.config.ts

@@ -0,0 +1,38 @@
+import { defineConfig, devices } from "@playwright/test";
+
+export default defineConfig({
+  testDir: "./tests/e2e",
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 1 : undefined,
+  reporter: "html",
+  use: {
+    baseURL: process.env.BASE_URL || "http://localhost:3000",
+    trace: "on-first-retry",
+    extraHTTPHeaders: {
+      "X-AIMock-Context": "langgraph-python",
+    },
+  },
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+  ],
+  webServer: process.env.CI
+    ? undefined
+    : {
+        command: "pnpm dev",
+        url: "http://localhost:3000",
+        reuseExistingServer: true,
+        env: {
+          ...process.env,
+          // Default to local aimock (Docker-exposed) when not set.
+          // In CI the env is inherited from docker-compose (http://aimock:4010/v1).
+          OPENAI_BASE_URL:
+            process.env.OPENAI_BASE_URL || "http://localhost:4010/v1",
+          OPENAI_API_KEY: process.env.OPENAI_API_KEY || "sk-mock-local-dev",
+        },
+      },
+});