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/y18n/build/lib/platform-shims/node.js

@@ -0,0 +1,19 @@
+import { readFileSync, statSync, writeFile } from 'fs';
+import { format } from 'util';
+import { resolve } from 'path';
+export default {
+    fs: {
+        readFileSync,
+        writeFile
+    },
+    format,
+    resolve,
+    exists: (file) => {
+        try {
+            return statSync(file).isFile();
+        }
+        catch (err) {
+            return false;
+        }
+    }
+};