Sample outdoor weather from the climate preset so people can freeze and the clock can show it.

Protocol v8 adds tenths of a °C and precipitation to the clock frame; warmth drains from insulation versus place temperature.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Protocol/ProtocolCodec.cs

@@ -13,7 +13,7 @@ public static class ProtocolCodec
     /// Largest <em>fixed-size</em> frame this codec produces. Variable map snapshots and
     /// presence frames use <see cref="ProtocolConstants.MaxMessageSize"/> instead.
     /// </summary>
-    public const int MaxFrameSize = 24;
+    public const int MaxFrameSize = 27;
 
     public static int WriteHello(Span<byte> destination, in ClientHelloMessage message)
     {
@@ -99,6 +99,8 @@ public static class ProtocolCodec
         writer.WriteByte(message.SpeedIndex);
         writer.WriteByte(message.SkipAllowed ? (byte)1 : (byte)0);
         writer.WriteInt64(message.SkipTargetUnixMs);
+        writer.WriteInt16(message.TemperatureTenths);
+        writer.WriteByte(message.Precipitation);
         return writer.Position;
     }
 
@@ -317,7 +319,17 @@ public static class ProtocolCodec
         var speedIndex = reader.ReadByte();
         var skipAllowed = reader.ReadByte() != 0;
         var skipTarget = reader.ReadInt64();
-        return new ServerClockMessage(schoolId, gameTime, running, speedIndex, skipAllowed, skipTarget);
+        var temperatureTenths = reader.ReadInt16();
+        var precipitation = reader.ReadByte();
+        return new ServerClockMessage(
+            schoolId,
+            gameTime,
+            running,
+            speedIndex,
+            skipAllowed,
+            skipTarget,
+            temperatureTenths,
+            precipitation);
     }
 
     public static ServerSchoolGoneMessage ReadSchoolGone(ReadOnlySpan<byte> source)