emulator: B2 RIO lamp/button bezel on the VDB heads + explode-view polish

Draw the cockpit RIO buttons around the mono-MFD and radar heads (explode
layout), lit by the host-commanded lamp state -- the display side of the
in-fork glass cockpit. Live-validated 2026-07-24 (operator).

- vpxlog.cpp: per-head button bezel in pal_draw, reading serialrio's new
  RIO_GetPanelState seam. The 5 MFD heads get red buttons (4 top / 4 bottom,
  100px tall tucked under a grown 640x500 display so a 10px lip shows); the
  radar gets amber Secondary/Screen side columns (6x 104px each) plus a
  centered bottom indicator strip (the 4 spares). Lamp byte decoded to
  off/dim/bright (vRIO RioLampState, brighter of the two brightness fields);
  a press shows white-hot. No labels -- the MFD shows each button's function.
  Also swapped the two upper-outer MFD window NAMES to match their (already
  position-swapped) desktop locations.
- serialrio.{cpp,h}: RIO_GetPanelState(lamps, pressed) accessor -- returns
  false when no rio port, so non-rio configs and other heads render normally.
- pod-launch: in explode (dev) layout the Division bridge is a normal, freely
  movable window -- not pinned topmost (Focus.cs) and nudged to 8,40 so its
  title bar clears the top of the screen (its client was at 0,0, pushing the
  frame off-screen). Cockpit/kiosk keeps the topmost + 0,0 borderless look.

Only affects the explode layout and only when a serial=rio port is present.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

emulator/pod-launch/Program.cs

@@ -142,14 +142,16 @@ namespace VwePod
                 // TerminateProcess skips this, but the job still closes with us.)
                 Console.CancelKeyPress += (s, e) => { e.Cancel = false; job.Dispose(); };
 
-                // Window layout LAST so it wins over the child windows: renderer
-                // -> always-on-top; DOSBox -> parked + foreground (keeps the emu
-                // thread at foreground priority so the RIO ACK deadline isn't
-                // missed). Give the windows a moment to exist first.
+                // Window layout LAST so it wins over the child windows: DOSBox ->
+                // parked + foreground (keeps the emu thread at foreground priority
+                // so the RIO ACK deadline isn't missed). The renderer is pinned
+                // topmost only in cockpit (kiosk) layout; in explode (dev) it stays
+                // a normal, freely movable window. Give the windows a moment first.
                 if (!opt.NoFocus)
                 {
                     Thread.Sleep(3000);
-                    Console.WriteLine("focus: " + Focus.Apply(opt.DosBoxX, opt.DosBoxY));
+                    Console.WriteLine("focus: " + Focus.Apply(
+                        opt.DosBoxX, opt.DosBoxY, opt.Layout == LayoutMode.Cockpit));
                 }
 
                 // Authoritative for the whole session: block until DOSBox exits.