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/bare-url/lib/errors.js

@@ -0,0 +1,33 @@
+module.exports = class URLError extends Error {
+  constructor(msg, fn = URLError, code = fn.name) {
+    super(`${code}: ${msg}`)
+
+    this.code = code
+
+    if (Error.captureStackTrace) Error.captureStackTrace(this, fn)
+  }
+
+  get name() {
+    return 'URLError'
+  }
+
+  static INVALID_URL(msg, input) {
+    const err = new URLError(msg, URLError.INVALID_URL)
+
+    err.input = input
+
+    return err
+  }
+
+  static INVALID_URL_SCHEME(msg = 'Invalid URL') {
+    return new URLError(msg, URLError.INVALID_URL_SCHEME)
+  }
+
+  static INVALID_FILE_URL_HOST(msg = 'Invalid file: URL host') {
+    return new URLError(msg, URLError.INVALID_FILE_URL_HOST)
+  }
+
+  static INVALID_FILE_URL_PATH(msg = 'Invalid file: URL path') {
+    return new URLError(msg, URLError.INVALID_FILE_URL_PATH)
+  }
+}