功能：完善2K串流、显示恢复与输入优化

tools/input-latency-bench.ps1

@@ -0,0 +1,85 @@
+# Temporary interactive test window; exits after ten minutes. No system settings.
+$ErrorActionPreference = 'Stop'
+$benchDir = 'C:\ProgramData\VDI\input-bench-20261103'
+New-Item -ItemType Directory -Force $benchDir | Out-Null
+Set-Content -LiteralPath "$benchDir\pid.txt" -Value $PID
+Add-Type -ReferencedAssemblies System.Windows.Forms,System.Drawing -TypeDefinition @'
+using System;
+using System.Diagnostics;
+using System.Drawing;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Windows.Forms;
+public class VDIInputBenchForm : Form {
+    [DllImport("user32.dll")] public static extern bool SetProcessDPIAware();
+    [DllImport("winmm.dll")] public static extern uint timeBeginPeriod(uint period);
+    [DllImport("winmm.dll")] public static extern uint timeEndPeriod(uint period);
+    readonly Stopwatch watch = Stopwatch.StartNew();
+    readonly Timer timer = new Timer();
+    readonly string folder;
+    int paints, clicks;
+    long lastReport;
+    long lastFrameIndex = -1;
+    public VDIInputBenchForm(string path) {
+        folder = path;
+        Text = "VDI Input Latency Bench";
+        FormBorderStyle = FormBorderStyle.None;
+        Bounds = Screen.PrimaryScreen.Bounds;
+        TopMost = true;
+        DoubleBuffered = true;
+        File.WriteAllText(Path.Combine(folder,"clicks.csv"), "ms,x,y,target\n");
+        // A WinForms 16ms timer can quantize to ~31ms at the default timer
+        // resolution and accidentally cap the *source* at 32FPS. Pace by an
+        // absolute monotonic frame index, not accumulated timer ticks.
+        timer.Interval = 1;
+        timer.Tick += delegate {
+            if(watch.Elapsed.TotalMinutes >= 10) { Close(); return; }
+            long frameIndex = watch.ElapsedTicks * 60 / Stopwatch.Frequency;
+            if(frameIndex != lastFrameIndex) { lastFrameIndex = frameIndex; Invalidate(); }
+        };
+        timer.Start();
+    }
+    protected override void OnMouseDown(MouseEventArgs e) {
+        base.OnMouseDown(e);
+        string target = e.X < Width/2 ? "L" : "R";
+        File.AppendAllText(Path.Combine(folder,"clicks.csv"),
+            watch.ElapsedMilliseconds+","+e.X+","+e.Y+","+target+"\n");
+        ++clicks;
+        Invalidate();
+    }
+    protected override void OnPaint(PaintEventArgs e) {
+        base.OnPaint(e);
+        long ms = watch.ElapsedMilliseconds;
+        e.Graphics.Clear(Color.FromArgb(16,24,39));
+        using(Brush left = new SolidBrush(Color.FromArgb(35,85,130)))
+        using(Brush right = new SolidBrush(Color.FromArgb(50,115,90))) {
+            e.Graphics.FillRectangle(left,50,180,Width/2-100,Height-260);
+            e.Graphics.FillRectangle(right,Width/2+50,180,Width/2-100,Height-260);
+        }
+        int x = (int)((ms*0.6)%(Width+100))-100;
+        e.Graphics.FillRectangle(Brushes.Gold,x,0,60,Height);
+        using(Font font = new Font("Consolas",24)) {
+            e.Graphics.DrawString("VDI test: moving bars + ordered clicks | "+clicks+" clicks | "+ms+" ms",
+                font,Brushes.White,70,40);
+            e.Graphics.DrawString("LEFT",font,Brushes.White,Width/4-50,Height/2);
+            e.Graphics.DrawString("RIGHT",font,Brushes.White,Width*3/4-50,Height/2);
+        }
+        ++paints;
+        if(ms-lastReport>=1000) {
+            File.WriteAllText(Path.Combine(folder,"status.txt"),
+                "width="+Width+" height="+Height+" paints="+paints+" elapsed_ms="+ms+" clicks="+clicks);
+            lastReport=ms;
+        }
+    }
+    protected override void OnFormClosed(FormClosedEventArgs e) {
+        timer.Stop(); timer.Dispose(); base.OnFormClosed(e);
+    }
+}
+'@
+[VDIInputBenchForm]::SetProcessDPIAware() | Out-Null
+$timerResult=[VDIInputBenchForm]::timeBeginPeriod(1)
+try {
+    [System.Windows.Forms.Application]::Run((New-Object VDIInputBenchForm($benchDir)))
+} finally {
+    if($timerResult -eq 0) { [VDIInputBenchForm]::timeEndPeriod(1) | Out-Null }
+}