Remove Test button, move Stop All to right edge

- Removed Test button, OnTest, RunTestAsync, IsTestRunning
- Remaining buttons (Live, Pattern, Random, Stop All) at 80px each
- Stop All moved to right edge (x=324)

MainForm.cs

@@ -16,7 +16,6 @@ public class MainForm : Form
     readonly Label            _lblDeviceName;
     readonly TextBox          _txtDeviceName;
     readonly Button           _btnConnect;
-    readonly Button           _btnTest;
     readonly Button           _btnStop;
     readonly System.Windows.Forms.Timer _statusTimer;
     readonly CancellationTokenSource _loopCts;
@@ -121,43 +120,35 @@ public class MainForm : Form
         };
         _chkSwap.CheckedChanged += OnSwapChanged;
 
-        _btnTest = new Button
-        {
-            Text = "Test",
-            Location = new Point(16, 96),
-            Size = new Size(68, 32)
-        };
-        _btnTest.Click += OnTest;
-
         _btnLive = new Button
         {
             Text = "Live",
-            Location = new Point(92, 96),
+            Location = new Point(16, 96),
-            Size = new Size(68, 32)
+            Size = new Size(80, 32)
         };
         _btnLive.Click += OnLive;
 
         _btnPattern = new Button
         {
             Text = "Pattern",
-            Location = new Point(168, 96),
+            Location = new Point(104, 96),
-            Size = new Size(68, 32)
+            Size = new Size(80, 32)
         };
         _btnPattern.Click += OnPattern;
 
         _btnRandom = new Button
         {
             Text = "Random",
-            Location = new Point(244, 96),
+            Location = new Point(192, 96),
-            Size = new Size(68, 32)
+            Size = new Size(80, 32)
         };
         _btnRandom.Click += OnRandom;
 
         _btnStop = new Button
         {
             Text = "Stop All",
-            Location = new Point(320, 96),
+            Location = new Point(324, 96),
-            Size = new Size(76, 32)
+            Size = new Size(80, 32)
         };
         _btnStop.Click += OnStop;
 
@@ -360,7 +351,7 @@ public class MainForm : Form
         };
         OnAmpChanged(null, EventArgs.Empty);
 
-        Controls.AddRange(new Control[] { _lblBle, _lblWs, _lblDeviceName, _txtDeviceName, _btnConnect, _chkSwap, _btnTest, _btnLive, _btnPattern, _btnRandom, _btnStop, _lblAudioDev, _cboAudioDev, _lblTrack, _lblSendA, _heatA, _lblSendB, _heatB, _lblRecvA, _gaugeRecvA, _lblRecvB, _gaugeRecvB, _lblLimitA, _limitBarA, _lblLimitValA, _chkScaleA, _lblLimitB, _limitBarB, _lblLimitValB, _chkScaleB, _lblAmpA, _ampBarA, _lblAmpValA, _lblAmpB, _ampBarB, _lblAmpValB });
+        Controls.AddRange(new Control[] { _lblBle, _lblWs, _lblDeviceName, _txtDeviceName, _btnConnect, _chkSwap, _btnLive, _btnPattern, _btnRandom, _btnStop, _lblAudioDev, _cboAudioDev, _lblTrack, _lblSendA, _heatA, _lblSendB, _heatB, _lblRecvA, _gaugeRecvA, _lblRecvB, _gaugeRecvB, _lblLimitA, _limitBarA, _lblLimitValA, _chkScaleA, _lblLimitB, _limitBarB, _lblLimitValB, _chkScaleB, _lblAmpA, _ampBarA, _lblAmpValA, _lblAmpB, _ampBarB, _lblAmpValB });
 
         // Tray icon — three cached variants: neutral=gray, active=gold, hot=red-orange
         _iconNeutral = CreateVoltageIcon(Color.Gray);
@@ -530,8 +521,7 @@ public class MainForm : Form
 
     void RefreshButtonStates()
     {
-        bool busy = IsTestRunning || _isLiveRunning || _isPatternRunning || _isRandomRunning;
+        bool busy = _isLiveRunning || _isPatternRunning || _isRandomRunning;
-        _btnTest.Enabled = !_server.HasClient && !busy;
         _btnLive.Enabled = !_server.HasClient && !busy;
         _btnPattern.Enabled = !_server.HasClient && !busy;
         _btnRandom.Enabled = !_server.HasClient && !busy;
@@ -558,64 +548,6 @@ public class MainForm : Form
         UpdateTrayIcon();
     }
 
-    bool IsTestRunning;
-
-    void OnTest(object? sender, EventArgs e)
-    {
-        if (IsTestRunning || _server.HasClient) return;
-        IsTestRunning = true;
-        _btnTest.Enabled = false;
-
-        Task.Run(() => RunTestAsync());
-    }
-
-    async Task RunTestAsync()
-    {
-        // Short feel-good pattern over both channels (~3s), gentle swell, A leads B.
-        const int testStrength = 25;
-
-        _state.SetStrength('A', testStrength);
-        _state.SetStrength('B', testStrength);
-
-        // 30 frames x 100ms = 3 seconds. Deep-ish 7Hz pulse with breathing envelope.
-        var framesA = new List<WaveFrame>();
-        var framesB = new List<WaveFrame>();
-        for (int i = 0; i < 30; i++)
-        {
-            double t = (double)i / 30;
-            // Swell 0 -> 70 -> 0 over the run
-            double env = Math.Sin(Math.PI * t) * 70;
-            int intA = (int)Math.Round(env);
-            int intB = (int)Math.Round(env * 0.7); // B slightly softer
-
-            int freqMs = 150; // ~7Hz deep
-            framesA.Add(new WaveFrame(
-                Freq.Compress4(new[] { freqMs, freqMs, freqMs, freqMs }),
-                Intensity.Clamp4(new[] { intA, intA, intA, intA })));
-            framesB.Add(new WaveFrame(
-                Freq.Compress4(new[] { freqMs, freqMs, freqMs, freqMs }),
-                Intensity.Clamp4(new[] { intB, intB, intB, intB })));
-        }
-
-        _state.Stop('A'); _state.Stop('B');
-        _state.EnqueueStream('A', framesA);
-        _state.EnqueueStream('B', framesB);
-
-        // Wait for the stream to be consumed (~3s) plus margin, then silence.
-        await Task.Delay(3300);
-
-        _state.SetStrength('A', 0);
-        _state.SetStrength('B', 0);
-        _state.Stop('A');
-        _state.Stop('B');
-
-        BeginInvoke(() =>
-        {
-            IsTestRunning = false;
-            RefreshButtonStates();
-        });
-    }
-
     void OnStop(object? sender, EventArgs e)
     {
         StopLive();