refactor: simplify browser routing cache

Trim the node browser routing changes down to the cache/interceptor shape from PR #100 and remove the leftover browser-scoped example and priming surface.

Made-with: Cursor

Author: rgarcia

examples/browser-routing.ts

@@ -0,0 +1,16 @@
+import Kernel from '@onkernel/sdk';
+
+async function main() {
+  const kernel = new Kernel({
+    browserRouting: {
+      enabled: true,
+      directToVMSubresources: ['computer'],
+    },
+  });
+
+  const browser = await kernel.browsers.create({});
+  await kernel.browsers.computer.clickMouse(browser.session_id, { x: 10, y: 10 });
+  await kernel.browsers.deleteByID(browser.session_id);
+}
+
+void main();

examples/browser-scoped.ts

@@ -7,7 +7,6 @@ export { APIPromise } from './core/api-promise';
 export { Kernel, type ClientOptions } from './client';
 export {
   BrowserRouteCache,
-  type BrowserFetchInit,
   type BrowserRoute,
   type BrowserRoutingOptions,
 } from './lib/browser-routing';