Two entry windows and an SO2R box

LoggingSession mixed two things: the contest, which one station has one of,
and what the operator is typing, which belongs to a radio. It is now
ContestSession and RadioPosition. Two positions share one log, one score and
one run of serial numbers, so a station worked on radio 1 is a dupe on radio 2.
Frequency, mode, split, what is typed and whether you are running belong to
each radio on its own.

A second radio opens a second entry window. It has no menu of its own: it is
another view of the same contest, not another program. Only the window for
radio 1 opens the database and the connections.

Ctrl+Tab moves the operator to the other radio and the keyboard follows.
Ctrl+Shift+Tab puts both radios in the headphones.

OtrspBox speaks OTRSP to an SO2R box over a serial port: TX1/TX2 for the key,
RX1/RX2 and RX1S for the headphones, AUXnnn for an output line. It follows the
active radio, and every message points the box at this radio before keying, so
a message cannot go out of the radio the operator has just left. A command that
would change nothing is not sent, because the box works relays; N1MM does the
same. The box takes a Stream, so what it sends is tested without a serial port.

Still missing: alternating CQ, and voice keying on the second radio.

Looked at under Xvfb with two fake radios, one of them split: both windows up,
radio 1 showing 14008.00 into 14020.0, radio 2 on 14030.00, Ctrl+Tab moving the
keyboard between them.

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

tests/Nonemm.Session.Tests/MessageExpanderTests.cs

@@ -7,7 +7,7 @@ namespace Nonemm.Session.Tests;
 
 public class MessageExpanderTests
 {
-    private static LoggingSession Session()
+    private static RadioPosition Session()
     {
         FakeLogStore store = new();
         ContestInstance instance = store.AddContest(new ContestInstance
@@ -16,18 +16,18 @@ public class MessageExpanderTests
             ContestName = "CQWW",
             SentExchange = "14",
         });
-        return new LoggingSession(
+        return new RadioPosition(new ContestSession(
             store,
             new CqWorldWide(ModeCategory.Cw),
             instance,
             new StationInfo { Callsign = "DL1ABC", CqZone = 14, Name = "Erik" },
-            null);
+            null));
     }
 
     [Fact]
     public void MyCallAndTheirCallAreFilledIn()
     {
-        LoggingSession session = Session();
+        RadioPosition session = Session();
         session.Entry.Call = "JA1XYZ";
         Assert.Equal("JA1XYZ DE DL1ABC", MessageExpander.Expand("{CALL} DE {MYCALL}", session));
     }