功能：完善2K串流、显示恢复与输入优化

tools/inject-mouse-sweep.py

@@ -0,0 +1,31 @@
+"""X11 benchmark only: 20 seconds of 125 Hz motion, no buttons or keys."""
+import ctypes
+import math
+import time
+
+x11 = ctypes.CDLL("libX11.so.6")
+xtest = ctypes.CDLL("libXtst.so.6")
+x11.XOpenDisplay.argtypes = [ctypes.c_char_p]
+x11.XOpenDisplay.restype = ctypes.c_void_p
+x11.XFlush.argtypes = [ctypes.c_void_p]
+x11.XCloseDisplay.argtypes = [ctypes.c_void_p]
+xtest.XTestFakeMotionEvent.argtypes = [ctypes.c_void_p, ctypes.c_int,
+                                     ctypes.c_int, ctypes.c_int, ctypes.c_ulong]
+display = x11.XOpenDisplay(None)
+if not display:
+    raise RuntimeError("X11 unavailable")
+start = time.monotonic()
+count = 0
+try:
+    while time.monotonic() - start < 20:
+        elapsed = time.monotonic() - start
+        x = round(1280 + 1000 * math.sin(elapsed * 4))
+        y = round(720 + 450 * math.cos(elapsed * 3))
+        if not xtest.XTestFakeMotionEvent(display, -1, x, y, 0):
+            raise RuntimeError("Motion injection failed")
+        x11.XFlush(display)
+        count += 1
+        time.sleep(max(0, start + count / 125 - time.monotonic()))
+finally:
+    x11.XCloseDisplay(display)
+print(f"Injected {count} motion events in {time.monotonic()-start:.2f}s")