"""Shared test setup: repo-root imports, the offscreen Qt platform, and
hermetic QSettings (tests must not read or write the user's real viewer
settings)."""

import os
import sys
import tempfile
from pathlib import Path

os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
sys.path.insert(0, str(Path(__file__).resolve().parent.parent))

from PyQt6.QtCore import QSettings  # noqa: E402

QSettings.setPath(QSettings.Format.IniFormat, QSettings.Scope.UserScope,
                  tempfile.mkdtemp(prefix="sras_qsettings_"))