Give the network status window N1MM's tabs and columns

The window was one flat table of columns this program made up. N1MM's has
tabs and a fixed set of columns, and an operator who knows one has to be
able to read the other.

**The window** now has Stations, Actions and Messages. Stations is a grid
with N1MM's headers in N1MM's order — Computer, IP Address, Pass, Run,
10, 100, Freq, Op, Msg, Send, Receive, Band, R/M, Mode — and a row per
station, this computer included. Right-click a row to pass the contact
being worked to that station, to talk, to show the connection log, or to
close and open its connection. Actions holds the talk line, the pass
frequency, the echo and the networking switch; Messages holds the chat,
the connection failures, the echo round trips and a trace of every
message that arrives.

**`STATUS`** is what fills those columns. N1MM sends it every few seconds
whether anything has changed or not — the pass frequency, the frequency,
run or search and pounce, the operator, the rates over the last ten and
the last hundred contacts, the mode, the categories and the version — so
a station sitting on one frequency for an hour still has a current row.
`BANDMAP` only says a station moved. The five transmit-interlock flags
are sent as false: this program does not block a transmitter.

**`Rates.PerHour`** reads the two rate columns out of the log. Count back
over the last N contacts, stop at a gap longer than the contest's minimum
off time, and treat a span under a minute as a minute, so three contacts
in five seconds read as 180 an hour rather than 2160.

A connection closed by hand stays closed. Without that flag the next
beacon opens it again within ten seconds, which makes the menu item look
broken.

Left out, because there is nothing behind them: N1MM's Resynchronize and
Rescore tabs, the transmit interlocks of its Options tab, the Master
column and the call-stacking target tab.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PdAYHcdRktqKry7nk414TU

src/Nonemm.Network/NetworkedStation.cs

@@ -51,12 +51,23 @@ public sealed class NetworkedStation
 
     public Band? Band => Bands.ForFrequency(Frequency);
 
+    /// Contacts an hour over this station's last ten and last hundred
+    /// contacts, from its `STATUS` message. The two rate columns of the
+    /// network status window.
+    public int Last10 { get; internal set; }
+
+    public int Last100 { get; internal set; }
+
     /// True while the station is running rather than searching. In a
     /// multi-single entry this is the run station.
     public bool IsRunning { get; internal set; }
 
     public bool IsTransmitting { get; internal set; }
 
+    /// True when the station is the second run radio of a two-radio position.
+    /// N1MM shows Run1 or Run2/Mult in its `R/M` column.
+    public bool IsRun2 { get; internal set; }
+
     public int RadioNumber { get; internal set; } = 1;
 
     /// A frequency this station has passed, from `PASSFREQ`, and who is on it.
@@ -91,6 +102,11 @@ public sealed class NetworkedStation
     /// window.
     public bool IsMine { get; internal init; }
 
+    /// Set when the operator closed the connection by hand. The beacons keep
+    /// arriving and the station stays in the list, but nothing opens a
+    /// connection to it again until the operator asks for one.
+    public bool IsReconnectPrevented { get; internal set; }
+
     /// Set when the station broadcast a version that is not ours. N1MM turns
     /// such a station away, so this program says why rather than failing to
     /// connect for no visible reason.