feat: add 8 framework integration examples + README integrations section

Add examples/integrations/ with tested examples for browser-use, Crawl4AI,
Scrapling, LangChain, Selenium, undetected-chromedriver, and agent-browser.
Add js/examples/stagehand.ts for Stagehand (TypeScript).

README: new "Framework Integrations" subsection with two integration
patterns (direct binary launch vs CDP connect) and table linking all 8 examples.

js/examples/stagehand.ts

@@ -0,0 +1,36 @@
+/**
+ * Stagehand + CloakBrowser: AI browser automation with stealth fingerprints.
+ *
+ * Stagehand handles AI-powered navigation and actions,
+ * CloakBrowser handles bot detection.
+ *
+ * Requires: npm install @browserbasehq/stagehand cloakbrowser
+ * Set OPENAI_API_KEY for the AI model.
+ *
+ * Usage:
+ *   CLOAKBROWSER_BINARY_PATH=/path/to/chrome npx tsx examples/stagehand.ts
+ */
+
+import { Stagehand } from "@browserbasehq/stagehand";
+import { ensureBinary } from "../src/download.js";
+import { getDefaultStealthArgs } from "../src/config.js";
+
+const binaryPath = await ensureBinary();
+const stealthArgs = getDefaultStealthArgs();
+
+const stagehand = new Stagehand({
+  env: "LOCAL",
+  localBrowserLaunchOptions: {
+    executablePath: binaryPath,
+    args: stealthArgs,
+    headless: true,
+  },
+});
+
+await stagehand.init();
+
+const page = stagehand.context.pages()[0];
+await page.goto("https://example.com");
+console.log(`Stagehand + CloakBrowser: ${await page.title()}`);
+
+await stagehand.close();