added ruff test

apps/studio/tools/ui_snapshot.py

@@ -38,9 +38,7 @@ os.chdir(APP_ROOT)
 def _replay_data(window, app) -> Path:
     """Synthesize one short recording (with visible frames) and open it."""
     import numpy as np
-
     from orisys_app_shared.record import ExperimentRecorder, RecordConfig
-
     from ui_check import _fake_packet
 
     root = APP_ROOT / "outputs" / "_snapshot_replay"
@@ -121,7 +119,6 @@ def _run_scene(window, app, scene: str):
     window._run_timer.stop()
 
     from orisys_app_shared.record.experiment import RecordStats
-
     from orisys_studio.ui import record_status
 
     directory = "20240101T101500Z_session0001_a1b2c3d4e5f6"
@@ -160,7 +157,6 @@ def _flow_scene(window, app, *, frames: int = 240) -> None:
 
     import numpy as np
     from orisys_app_shared.acquisition.sdk_worker import SdkPacket
-
     from ui_check import _StuckWorker
 
     stuck = _StuckWorker()
@@ -304,14 +300,12 @@ def _demo_data(window) -> None:
 
     # Synthetic outward flow so the branded canvas and flow ramp are reviewable.
     import numpy as np
-
     from orisys_app_shared.acquisition.arrows import (
         draw_arrow_display,
         flow_colormap,
         hex_to_bgr,
     )
     from orisys_app_shared.theme import color
-
     from orisys_studio.app_window import _bgr_to_qimage
 
     size = 320
@@ -393,11 +387,10 @@ def main() -> int:
 
     panels = {part.strip().lower() for part in args.panels.split(",") if part.strip()}
 
-    from PySide6.QtWidgets import QApplication
-
     from orisys_app_shared.i18n import set_locale
     from orisys_app_shared.theme import build_qss
     from orisys_studio.app_window import StudioMainWindow
+    from PySide6.QtWidgets import QApplication
 
     app = QApplication(sys.argv)
     set_locale(args.lang)