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/devtools-protocol/pdl/domains/DeviceAccess.pdl

@@ -0,0 +1,43 @@
+# Copyright 2017 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Contributing to Chrome DevTools Protocol: https://goo.gle/devtools-contribution-guide-cdp
+
+experimental domain DeviceAccess
+  # Device request id.
+  type RequestId extends string
+
+  # A device id.
+  type DeviceId extends string
+
+  # Device information displayed in a user prompt to select a device.
+  type PromptDevice extends object
+    properties
+      DeviceId id
+      # Display name as it appears in a device request user prompt.
+      string name
+
+  # Enable events in this domain.
+  command enable
+
+  # Disable events in this domain.
+  command disable
+
+  # Select a device in response to a DeviceAccess.deviceRequestPrompted event.
+  command selectPrompt
+    parameters
+      RequestId id
+      DeviceId deviceId
+
+  # Cancel a prompt in response to a DeviceAccess.deviceRequestPrompted event.
+  command cancelPrompt
+    parameters
+      RequestId id
+
+  # A device request opened a user prompt to select a device. Respond with the
+  # selectPrompt or cancelPrompt command.
+  event deviceRequestPrompted
+    parameters
+      RequestId id
+      array of PromptDevice devices