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-path/lib/constants.js

@@ -0,0 +1,11 @@
+module.exports = {
+  CHAR_UPPERCASE_A: 0x41,
+  CHAR_LOWERCASE_A: 0x61,
+  CHAR_UPPERCASE_Z: 0x5a,
+  CHAR_LOWERCASE_Z: 0x7a,
+  CHAR_DOT: 0x2e,
+  CHAR_FORWARD_SLASH: 0x2f,
+  CHAR_BACKWARD_SLASH: 0x5c,
+  CHAR_COLON: 0x3a,
+  CHAR_QUESTION_MARK: 0x3f
+}