Show director summons as info toasts and presence queue labels.

Corridor waiters need a summon-phase byte on presence (v11); EventDef DirectorSummoned is info-only so clocks keep running.

src/HSchool.Protocol/ProtocolCodec.cs

@@ -218,6 +218,7 @@ public static class ProtocolCodec
             }
 
             size += StringSize(person.TalkTopicId ?? "");
+            size += sizeof(byte);
         }
 
         return size;
@@ -274,6 +275,7 @@ public static class ProtocolCodec
             }
 
             writer.WriteString(person.TalkTopicId ?? "");
+            writer.WriteByte(person.SummonPhase);
         }
 
         return writer.Position;
@@ -460,7 +462,8 @@ public static class ProtocolCodec
             }
 
             var topicId = reader.ReadString();
-            people[i] = new PresencePerson(id, nodeId, state, members, topicId);
+            var summonPhase = reader.ReadByte();
+            people[i] = new PresencePerson(id, nodeId, state, members, topicId, summonPhase);
         }
 
         return new ServerPresenceMessage(schoolId, nodes, people);