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/@puppeteer/browsers/lib/cjs/detectPlatform.js

@@ -0,0 +1,53 @@
+"use strict";
+/**
+ * @license
+ * Copyright 2023 Google Inc.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.detectBrowserPlatform = detectBrowserPlatform;
+const node_os_1 = __importDefault(require("node:os"));
+const browser_data_js_1 = require("./browser-data/browser-data.js");
+/**
+ * @public
+ */
+function detectBrowserPlatform() {
+    const platform = node_os_1.default.platform();
+    const arch = node_os_1.default.arch();
+    switch (platform) {
+        case 'darwin':
+            return arch === 'arm64' ? browser_data_js_1.BrowserPlatform.MAC_ARM : browser_data_js_1.BrowserPlatform.MAC;
+        case 'linux':
+            return arch === 'arm64'
+                ? browser_data_js_1.BrowserPlatform.LINUX_ARM
+                : browser_data_js_1.BrowserPlatform.LINUX;
+        case 'win32':
+            return arch === 'x64' ||
+                // Windows 11 for ARM supports x64 emulation
+                (arch === 'arm64' && isWindows11(node_os_1.default.release()))
+                ? browser_data_js_1.BrowserPlatform.WIN64
+                : browser_data_js_1.BrowserPlatform.WIN32;
+        default:
+            return undefined;
+    }
+}
+/**
+ * Windows 11 is identified by the version 10.0.22000 or greater
+ * @internal
+ */
+function isWindows11(version) {
+    const parts = version.split('.');
+    if (parts.length > 2) {
+        const major = parseInt(parts[0], 10);
+        const minor = parseInt(parts[1], 10);
+        const patch = parseInt(parts[2], 10);
+        return (major > 10 ||
+            (major === 10 && minor > 0) ||
+            (major === 10 && minor === 0 && patch >= 22000));
+    }
+    return false;
+}
+//# sourceMappingURL=detectPlatform.js.map