diff --git a/bot_bottle/backend/smolmachines/pty_resize.py b/bot_bottle/backend/smolmachines/pty_resize.py
index cae1664..7de4fda 100644
--- a/bot_bottle/backend/smolmachines/pty_resize.py
+++ b/bot_bottle/backend/smolmachines/pty_resize.py
@@ -36,6 +36,7 @@ follow-up tracked separately)."""
 from __future__ import annotations
 
 import fcntl
+import io
 import signal
 import struct
 import subprocess
@@ -68,7 +69,11 @@ def _read_winsize() -> tuple[int, int] | None:
       - tmux respawn-pane: tmux sets all three to the pane's PTY.
       - non-TTY (someone piped stdin in tests): none are; the
         sync just no-ops, which is the right behavior."""
-    for fd in (sys.stdin.fileno(), sys.stdout.fileno(), sys.stderr.fileno()):
+    for default_fd, stream in enumerate((sys.stdin, sys.stdout, sys.stderr)):
+        try:
+            fd = stream.fileno()
+        except (AttributeError, io.UnsupportedOperation, OSError):
+            fd = default_fd
         try:
             data = fcntl.ioctl(fd, termios.TIOCGWINSZ, b"\x00" * 8)
         except OSError:
diff --git a/bot_bottle/contrib/codex/codex_auth.py b/bot_bottle/contrib/codex/codex_auth.py
index 9f6da0a..36e33cb 100644
--- a/bot_bottle/contrib/codex/codex_auth.py
+++ b/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 bot_bottle.log import die
+from bot_bottle.util import expand_tilde
 
 
 def codex_auth_path(host_env: dict[str, str] | None = None) -> Path:
@@ -153,7 +153,9 @@ def _dummy_jwt_from_host(
         return _dummy_jwt(now, exp_ts=exp_ts)
     if not isinstance(payload, dict):
         return _dummy_jwt(now, exp_ts=exp_ts)
-    return _encode_dummy_jwt(_redact_jwt_payload(cast(dict[str, object], payload), now=now, exp_ts=exp_ts))
+    return _encode_dummy_jwt(
+        _redact_jwt_payload(cast(dict[str, object], payload), now=now, exp_ts=exp_ts)
+    )
 
 
 def _encode_dummy_jwt(payload: dict[str, object]) -> str: