Mark the CQ frequency on the bandmap and leave Run when the radio moves off it

Starting Run stores the frequency in the position. The bandmap draws a
purple, bold "CQ Frequency" pseudospot there, which is not added to the
shared bandmap, and a click on it tunes back and sets Run. A move of more
than 3 kHz (a setting on the telnet Filters tab) while running switches
to search and pounce.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tests/Nonemm.Spotting.Tests/SpotDescriptionTests.cs

@@ -73,4 +73,21 @@ public class SpotDescriptionTests
         Assert.Equal("14025.0 by SHACK-2, 41m ago", SpotDescription.Of(spot, Now));
     }
 
+    [Fact]
+    public void TheCqFrequencyPseudospotSaysSo() =>
+        Assert.Equal("14025.0, your CQ frequency", SpotDescription.Of(Spot.CqFrequency(Frequency.FromKilohertz(14_025), At), Now));
+
+    [Theory]
+    [InlineData("CW 26 dB 1205Z", "CW 26 dB")]
+    [InlineData("1205Z", "")]
+    [InlineData("QRP 5W1205Z", "QRP 5W1205Z")]
+    public void TheTimeAtTheEndOfAClusterLineIsLeftOut(string comment, string expected)
+    {
+        Spot spot = new(
+            Callsign.Parse("JA1XYZ"), Frequency.FromKilohertz(14_025), At, SpotSource.Cluster,
+            "K1TTT", comment);
+
+        string second = SpotDescription.Of(spot, Now).Split('\n').ElementAtOrDefault(1) ?? "";
+        Assert.Equal(expected, second);
+    }
 }