Redesign left panel layout: TX block on top, dynamic Band panel height

- Move PanelTX above PanelBands; DRV slider now below MOX/TUN buttons
- MOX/TUN resized to match standard button style (54×24, BTN_SM)
- PanelBands default height reduced to 74 (no reserved XVTR space)
- RebuildXvtrButtons dynamically resizes PanelBands (+27px per XVTR row)
  and calls RelayoutBelowBands to reposition Mode/Filter/CTUN/RX panels

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

MainForm.pas

@@ -571,6 +571,7 @@ type
     function  XvtrTranslate(VisibleHz: Double): Double;
     procedure ApplyXvtrToNetwork;
     procedure RebuildXvtrButtons;
+    procedure RelayoutBelowBands;
     procedure BtnXvtrBandClick(Sender: TObject);
     procedure ActivateXvtrBand(Idx: Integer);
     procedure DeactivateXvtr;
@@ -1565,12 +1566,36 @@ begin
 
   LayoutTopVfoBlock;
 
+  // TX controls
+  PanelTX := TPanel.Create(Self);
+  PanelTX.Parent := PanelLeft;
+  PanelTX.SetBounds(0, Y, LEFT_W, 72);
+  PanelTX.BevelOuter := bvNone;
+  MakeLbl(PanelTX, 'TX', 4, 2);
+
+  W := (LEFT_W - 6) div 4;
+  BtnMOX := MakeBtn(PanelTX, 'MOX', 2,     16, W - 2, BTN_SM, BtnMOXClick);
+  BtnTUN := MakeBtn(PanelTX, 'TUN', W + 2, 16, W - 2, BTN_SM, BtnTUNClick);
+
+  LblDrv := TLabel.Create(Self);
+  LblDrv.Parent := PanelTX; LblDrv.Left := 4; LblDrv.Top := 53;
+  LblDrv.Caption := 'DRV'; LblDrv.Font.Color := CLR_TEXTDIM;
+  LblDrv.Font.Name := 'Courier New'; LblDrv.Font.Size := 7;
+
+  TrkDrive := TFlatSlider.Create(Self);
+  TrkDrive.Parent := PanelTX; TrkDrive.Left := 34; TrkDrive.Top := 50;
+  TrkDrive.Width := 150; TrkDrive.Height := 16;
+  TrkDrive.Min := 0; TrkDrive.Max := 100; TrkDrive.Position := 50;
+  TrkDrive.OnChange := TrkDriveChange;
+
+  Inc(Y, 76);
+
   // Band selector. Высота резервирует 2 дополнительных ряда под XVTR-кнопки
   // (создаются динамически в RebuildXvtrButtons). В каждом ряду до 6 кнопок,
   // итого до 12 XVTR-кнопок (наш CFG_XVTR_COUNT = 8 умещается с запасом).
   PanelBands := TPanel.Create(Self);
   PanelBands.Parent := PanelLeft;
-  PanelBands.SetBounds(0, Y, LEFT_W, 74 + 54);
+  PanelBands.SetBounds(0, Y, LEFT_W, 74);
   PanelBands.BevelOuter := bvNone;
   MakeLbl(PanelBands, 'BAND', 4, 2);
   W := (LEFT_W - 6) div 6;
@@ -1587,7 +1612,7 @@ begin
   for i := 0 to CFG_XVTR_COUNT - 1 do
     BtnXvtrBand[i] := nil;
 
-  Inc(Y, 76 + 54);
+  Inc(Y, 76);
 
   // Mode selector
   PanelMode := TPanel.Create(Self);
@@ -1692,35 +1717,6 @@ begin
 
   Inc(Y, 126);
 
-  // S-Meter
-
-  Inc(Y, 52);
-
-  // TX controls
-  PanelTX := TPanel.Create(Self);
-  PanelTX.Parent := PanelLeft;
-  PanelTX.SetBounds(0, Y, LEFT_W, 74);
-  PanelTX.BevelOuter := bvNone;
-  MakeLbl(PanelTX, 'TX', 4, 2);
-
-  LblDrv := TLabel.Create(Self);
-  LblDrv.Parent := PanelTX; LblDrv.Left := 4; LblDrv.Top := 17;
-  LblDrv.Caption := 'DRV'; LblDrv.Font.Color := CLR_TEXTDIM;
-  LblDrv.Font.Name := 'Courier New'; LblDrv.Font.Size := 7;
-
-  TrkDrive := TFlatSlider.Create(Self);
-  TrkDrive.Parent := PanelTX; TrkDrive.Left := 34; TrkDrive.Top := 16;
-  TrkDrive.Width := 150; TrkDrive.Height := 16;
-  TrkDrive.Min := 0; TrkDrive.Max := 100; TrkDrive.Position := 50;
-  TrkDrive.OnChange := TrkDriveChange;
-
-  BtnMOX := MakeBtn(PanelTX, 'MOX', 2, 38, 50, 32, BtnMOXClick);
-  BtnMOX.Font.Size := 12; BtnMOX.Font.Bold := True;
-
-  BtnTUN := MakeBtn(PanelTX, 'TUN', 56, 38, 50, 32, BtnTUNClick);
-  BtnTUN.Font.Size := 12; BtnTUN.Font.Bold := True;
-
-
   // ---- Right panel ----
   PanelRight := TPanel.Create(Self);
   PanelRight.Parent     := Self;
@@ -5620,11 +5616,23 @@ end;
 
 // Перестраивает динамические XVTR-кнопки в PanelBands. Удаляет старые,
 // создаёт новые для enabled слотов в 3-м и 4-м ряду PanelBands.
+procedure TMainForm.RelayoutBelowBands;
+var
+  Y: Integer;
+begin
+  if PanelBands = nil then Exit;
+  Y := PanelBands.Top + PanelBands.Height + 2;
+  PanelMode.Top   := Y; Inc(Y, 76);
+  PanelFilter.Top := Y; Inc(Y, 76);
+  BtnCTun.Top := Y; BtnDUP.Top := Y; Inc(Y, 30);  // BTN_H(26) + 4
+  PanelRX.Top := Y;
+end;
+
 procedure TMainForm.RebuildXvtrButtons;
 const
   BTN_H_LOC = 24;
 var
-  i, Pos: Integer;
+  i, Pos, XvtrRows: Integer;
   W:      Integer;
   B:      TFlatButton;
   Cap:    string;
@@ -5658,6 +5666,12 @@ begin
       StyleButton(B, i = FCurrentXvtr);
       Inc(Pos);
     end;
+  // Динамически подгоняем высоту PanelBands под реальное число XVTR-рядов
+  if Pos = 0 then XvtrRows := 0
+  else if Pos <= 6 then XvtrRows := 1
+  else XvtrRows := 2;
+  PanelBands.Height := 74 + XvtrRows * 27;
+  RelayoutBelowBands;
 end;
 
 // Обработчик клика по XVTR-кнопке. Tag = -(idx+1).