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/cjs/bidiMapper/modules/script/ChannelProxy.d.ts

@@ -0,0 +1,30 @@
+import { Script } from '../../../protocol/protocol.js';
+import { type LoggerFn } from '../../../utils/log.js';
+import type { EventManager } from '../session/EventManager.js';
+import type { Realm } from './Realm.js';
+/**
+ * Used to send messages from realm to BiDi user.
+ */
+export declare class ChannelProxy {
+    #private;
+    constructor(channel: Script.ChannelProperties, logger?: LoggerFn);
+    /**
+     * Creates a channel proxy in the given realm, initialises listener and
+     * returns a handle to `sendMessage` delegate.
+     */
+    init(realm: Realm, eventManager: EventManager): Promise<Script.Handle>;
+    /** Gets a ChannelProxy from window and returns its handle. */
+    startListenerFromWindow(realm: Realm, eventManager: EventManager): Promise<void>;
+    /**
+     * String to be evaluated to create a ProxyChannel and put it to window.
+     * Returns the delegate `sendMessage`. Used to provide an argument for preload
+     * script. Does the following:
+     * 1. Creates a ChannelProxy.
+     * 2. Puts the ChannelProxy to window['${this.#id}'] or resolves the promise
+     *    by calling delegate stored in window['${this.#id}'].
+     *    This is needed because `#getHandleFromWindow` can be called before or
+     *    after this method.
+     * 3. Returns the delegate `sendMessage` of the created ChannelProxy.
+     */
+    getEvalInWindowStr(): string;
+}