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/webdriver-bidi-protocol/out/gen/permissions.d.ts

@@ -0,0 +1,28 @@
+export type PermissionsCommand = Permissions.SetPermission;
+export declare namespace Permissions {
+  type PermissionDescriptor = {
+    name: string;
+  };
+}
+export declare namespace Permissions {
+  const enum PermissionState {
+    Granted = 'granted',
+    Denied = 'denied',
+    Prompt = 'prompt',
+  }
+}
+export declare namespace Permissions {
+  type SetPermission = {
+    method: 'permissions.setPermission';
+    params: Permissions.SetPermissionParameters;
+  };
+}
+export declare namespace Permissions {
+  type SetPermissionParameters = {
+    descriptor: Permissions.PermissionDescriptor;
+    state: Permissions.PermissionState;
+    origin: string;
+    embeddedOrigin?: string;
+    userContext?: string;
+  };
+}