style(scripts): apply ruff formatting to the benchmark scripts

Formatting only: split combined imports and semicolon statements, sort
imports, wrap subprocess argument lists. No behaviour change; the
one-device-per-process structure that makes bench.py's numbers
trustworthy is untouched.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

scripts/bench.py

@@ -1,8 +1,13 @@
 """One device per process: wall time + CPU time consumed (offload evidence)."""
-import subprocess, sys, time, resource
+
+import resource
+import subprocess
+import sys
+import time
+
 import numpy as np
-from huggingface_hub import snapshot_download
 import openvino_genai as ov_genai
+from huggingface_hub import snapshot_download
 
 SR = 16000
 
@@ -10,15 +15,33 @@ SR = 16000
 def main():
     dev = sys.argv[1]
     audio = sys.argv[2] if len(sys.argv) > 2 else "sample.wav"
-    raw = subprocess.run(["ffmpeg", "-nostdin", "-loglevel", "error", "-i", audio,
-                          "-f", "f32le", "-ac", "1", "-ar", str(SR), "-"],
-                         capture_output=True, check=True).stdout
+    raw = subprocess.run(
+        [
+            "ffmpeg",
+            "-nostdin",
+            "-loglevel",
+            "error",
+            "-i",
+            audio,
+            "-f",
+            "f32le",
+            "-ac",
+            "1",
+            "-ar",
+            str(SR),
+            "-",
+        ],
+        capture_output=True,
+        check=True,
+    ).stdout
     speech = np.frombuffer(raw, dtype=np.float32)
     secs = len(speech) / SR
 
     pipe = ov_genai.WhisperPipeline(
         snapshot_download("OpenVINO/whisper-large-v3-turbo-int8-ov"),
-        dev, CACHE_DIR=f".ov_cache_{dev.lower()}")
+        dev,
+        CACHE_DIR=f".ov_cache_{dev.lower()}",
+    )
 
     for i in range(3):
         r0 = resource.getrusage(resource.RUSAGE_SELF)
@@ -27,9 +50,12 @@ def main():
         wall = time.perf_counter() - t
         r1 = resource.getrusage(resource.RUSAGE_SELF)
         cpu = (r1.ru_utime - r0.ru_utime) + (r1.ru_stime - r0.ru_stime)
-        print(f"{dev} pass{i+1}: wall {wall:6.1f}s  RTF {secs/wall:.2f}x  "
-              f"cpu-time {cpu:6.1f}s  ({cpu/wall:4.1f} cores busy)", flush=True)
+        print(
+            f"{dev} pass{i + 1}: wall {wall:6.1f}s  RTF {secs / wall:.2f}x  "
+            f"cpu-time {cpu:6.1f}s  ({cpu / wall:4.1f} cores busy)",
+            flush=True,
+        )
 
 
-if __name__ == "__main__":          # forkserver re-imports __main__; guard is required
+if __name__ == "__main__":  # forkserver re-imports __main__; guard is required
     main()