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-fs/lib/constants.d.ts

@@ -0,0 +1,49 @@
+declare const constants: {
+  O_RDWR: number
+  O_RDONLY: number
+  O_WRONLY: number
+  O_CREAT: number
+  O_TRUNC: number
+  O_APPEND: number
+
+  F_OK: number
+  R_OK: number
+  W_OK: number
+  X_OK: number
+
+  S_IFMT: number
+  S_IFREG: number
+  S_IFDIR: number
+  S_IFCHR: number
+  S_IFLNK: number
+  S_IFBLK: number
+  S_IFIFO: number
+  S_IFSOCK: number
+
+  S_IRUSR: number
+  S_IWUSR: number
+  S_IXUSR: number
+  S_IRGRP: number
+  S_IWGRP: number
+  S_IXGRP: number
+  S_IROTH: number
+  S_IWOTH: number
+  S_IXOTH: number
+
+  UV_DIRENT_UNKNOWN: number
+  UV_DIRENT_FILE: number
+  UV_DIRENT_DIR: number
+  UV_DIRENT_LINK: number
+  UV_DIRENT_FIFO: number
+  UV_DIRENT_SOCKET: number
+  UV_DIRENT_CHAR: number
+  UV_DIRENT_BLOCK: number
+
+  COPYFILE_EXCL: number
+  COPYFILE_FICLONE: number
+  COPYFILE_FICLONE_FORCE: number
+  UV_FS_SYMLINK_DIR: number
+  UV_FS_SYMLINK_JUNCTION: number
+}
+
+export = constants