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/bidiMapper/modules/session/SubscriptionManager.d.ts

@@ -0,0 +1,64 @@
+/**
+ * Copyright 2022 Google LLC.
+ * Copyright (c) Microsoft Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import type { GoogChannel } from '../../../protocol/chromium-bidi.js';
+import { type Browser, type BrowsingContext, ChromiumBidi } from '../../../protocol/protocol.js';
+import type { BrowsingContextStorage } from '../context/BrowsingContextStorage.js';
+/**
+ * Returns the cartesian product of the given arrays.
+ *
+ * Example:
+ *   cartesian([1, 2], ['a', 'b']); => [[1, 'a'], [1, 'b'], [2, 'a'], [2, 'b']]
+ */
+export declare function cartesianProduct(...a: any[][]): any[];
+/** Expands "AllEvents" events into atomic events. */
+export declare function unrollEvents(events: ChromiumBidi.EventNames[]): Iterable<ChromiumBidi.EventNames>;
+export interface Subscription {
+    id: string;
+    topLevelTraversableIds: Set<BrowsingContext.BrowsingContext>;
+    userContextIds: Set<string>;
+    eventNames: Set<ChromiumBidi.EventNames>;
+    googChannel: GoogChannel;
+}
+export declare class SubscriptionManager {
+    #private;
+    constructor(browsingContextStorage: BrowsingContextStorage);
+    getGoogChannelsSubscribedToEvent(eventName: ChromiumBidi.EventNames, contextId: BrowsingContext.BrowsingContext): GoogChannel[];
+    getGoogChannelsSubscribedToEventGlobally(eventName: ChromiumBidi.EventNames): GoogChannel[];
+    isSubscribedTo(moduleOrEvent: ChromiumBidi.EventNames, contextId: BrowsingContext.BrowsingContext): boolean;
+    /**
+     * Subscribes to event in the given context and goog:channel.
+     * @return {SubscriptionItem[]} List of
+     * subscriptions. If the event is a whole module, it will return all the specific
+     * events. If the contextId is null, it will return all the top-level contexts which were
+     * not subscribed before the command.
+     */
+    subscribe(eventNames: ChromiumBidi.EventNames[], contextIds: BrowsingContext.BrowsingContext[], userContextIds: Browser.UserContext[], googChannel: GoogChannel): Subscription;
+    /**
+     * Unsubscribes atomically from all events in the given contexts and channel.
+     *
+     * This is a legacy spec branch to unsubscribe by attributes.
+     */
+    unsubscribe(inputEventNames: ChromiumBidi.EventNames[], googChannel: GoogChannel): void;
+    /**
+     * Unsubscribes by subscriptionId.
+     */
+    unsubscribeById(subscriptionIds: string[]): void;
+}
+/**
+ * Replace with Set.prototype.difference once Node 20 is dropped.
+ */
+export declare function difference<T>(setA: Set<T>, setB: Set<T>): Set<T>;