Add Brave CDP automation, replace Oracle browser mode

Connects to user's running Brave via Chrome DevTools Protocol
to automate ChatGPT interaction. Uses puppeteer-core to open a
tab, send the prompt, wait for response, and extract the result.

No cookies, no separate profiles, no copy/paste. Just connects
to the browser where the user is already logged in.

One-time setup: relaunch Brave with --remote-debugging-port=9222

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/chromium-bidi/lib/esm/bidiServer/PipeTransport.d.ts

@@ -0,0 +1,8 @@
+import type { Transport } from '../utils/transport.js';
+export declare class PipeTransport implements Transport {
+    #private;
+    constructor(pipeWrite: NodeJS.WritableStream, pipeRead: NodeJS.ReadableStream);
+    setOnMessage(onMessage: (message: string) => void): void;
+    sendMessage(message: string): void;
+    close(): void;
+}