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/basic-ftp/dist/StringWriter.js

@@ -0,0 +1,23 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.StringWriter = void 0;
+const stream_1 = require("stream");
+class StringWriter extends stream_1.Writable {
+    constructor() {
+        super(...arguments);
+        this.buf = Buffer.alloc(0);
+    }
+    _write(chunk, _, callback) {
+        if (chunk instanceof Buffer) {
+            this.buf = Buffer.concat([this.buf, chunk]);
+            callback(null);
+        }
+        else {
+            callback(new Error("StringWriter expects chunks of type 'Buffer'."));
+        }
+    }
+    getText(encoding) {
+        return this.buf.toString(encoding);
+    }
+}
+exports.StringWriter = StringWriter;