fix: correct broken imports and fileno() guard after rebase

codex_auth.py was moved into contrib/codex/ but still used `.log`/
`.util` relative imports that resolved to the parent bot_bottle
package before the move — update to `...log` / `...util`.

_read_winsize() called sys.stdin.fileno() outside the OSError guard;
pytest's redirected stdin raises UnsupportedOperation (an OSError
subclass) there, breaking test_returns_first_tty_size. Move fileno()
inside the try block so any non-TTY stream is skipped cleanly.

bot_bottle/contrib/codex/codex_auth.py

@@ -15,8 +15,8 @@ from datetime import datetime, timezone
 from pathlib import Path
 from typing import cast
 
-from .log import die
-from .util import expand_tilde
+from ...log import die
+from ...util import expand_tilde
 
 
 def codex_auth_path(host_env: dict[str, str] | None = None) -> Path: