update test and build scripts

tests/test_longrun_stability.py

@@ -0,0 +1,41 @@
+import os
+
+import numpy as np
+import pytest
+
+
+@pytest.mark.slow
+def test_vnormal_longrun_no_outlier_jumps(sensor_factory, available_backends):
+    preferred = os.getenv("ORISYS_LONGRUN_BACKEND", "cupy")
+    backend = preferred if preferred in available_backends else "cpu"
+
+    frames = int(os.getenv("ORISYS_LONGRUN_FRAMES", "1200"))
+    ratio_limit = float(os.getenv("ORISYS_LONGRUN_MAX_P99_P95_RATIO", "6.0"))
+
+    sensor = sensor_factory(backend=backend)
+    deltas = []
+    prev = None
+    try:
+        for _ in range(frames):
+            img = sensor.get_img()
+            assert img is not None
+            sensor.compute_deformation(check_motion=False)
+            (vnormal,) = sensor.read_info(sensor.info.VNORMAL)
+            assert np.isfinite(vnormal).all()
+
+            if prev is not None:
+                deltas.append(float(np.mean(np.abs(vnormal - prev))))
+            prev = vnormal.copy()
+    finally:
+        sensor.disconnect()
+
+    if len(deltas) < 30:
+        pytest.skip("Not enough frames to evaluate stability.")
+
+    p95 = float(np.percentile(deltas, 95))
+    p99 = float(np.percentile(deltas, 99))
+    ratio = p99 / (p95 + 1e-9)
+    assert ratio < ratio_limit, (
+        f"Long-run jump risk detected on {backend}: p99/p95={ratio:.3f} "
+        f"(limit={ratio_limit})."
+    )