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/extract-zip/cli.js

@@ -0,0 +1,19 @@
+#!/usr/bin/env node
+
+/* eslint-disable no-process-exit */
+
+var extract = require('./')
+
+var args = process.argv.slice(2)
+var source = args[0]
+var dest = args[1] || process.cwd()
+if (!source) {
+  console.error('Usage: extract-zip foo.zip <targetDirectory>')
+  process.exit(1)
+}
+
+extract(source, { dir: dest })
+  .catch(function (err) {
+    console.error('error!', err)
+    process.exit(1)
+  })