vRIO builds in the vPLASMA display

The plasma glass now lives in vRIO's encoder strip: PlasmaCanvas grew a
dot-pitch parameter (default keeps the standalone glass pixel-identical)
and is compile-linked into VRio.App at pitch 3, parked at the strip's
left slot. The axis gauges move to the grid's right edge, the strip is
as tall as the glass, and the status text sits between them with the
axis readout split onto two lines. The button grid also compacts: rows
shift up past the layout's empty row 0 and the spare bottom row is
trimmed (the shared CockpitLayout is untouched, so coordinates still
match RIOJoy's map).

Control strip: the COM row labels are now the device names -- vRIO and
vPLASMA -- coloured by port status (green open, gray closed), replacing
the port-status line. The plasma row auto-opens COM12 at startup like
the RIO row does COM11; one Rescan refreshes both pickers. Plasma log
lines share the wire log under a vPLASMA: prefix, and the standalone
gestures carry over (double-click self-test, right-click reset).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

README.md

@@ -107,11 +107,15 @@ a null-modem cable work the same way.
 
 The cockpit's second serial device is the **plasma display**: a 128×32
 dot-matrix panel on COM2 (9600 8N1, no flow control) that the game draws
-mission text and status graphics on. `VPlasma.App` is its software replica:
-a bare-glass window that opens **COM12** (the device end of the plasma's
-null-modem pair) on startup — retrying while the port is missing or busy,
-port status in the title bar — decodes the display's command stream, and
-renders the dot matrix in plasma orange, text mode included.
+mission text and status graphics on. The software replica comes in two
+forms. **Built into vRIO**: the panel's encoder strip hosts the glass at
+top left, with its own port row in the control strip (label colour = port
+status; auto-opens **COM12** at startup when present). And standalone,
+`VPlasma.App`: a bare-glass window that opens **COM12** (the device end of
+the plasma's null-modem pair) on startup — retrying while the port is
+missing or busy, port status in the title bar. Both decode the display's
+command stream and render the dot matrix in plasma orange, text mode
+included; only one can hold COM12 at a time.
 
 The command set was recovered from two Tesla 4.10 artifacts:
 `CODE\RP\MUNGA_L4\L4PLASMA.CPP` (the game's driver — it renders everything