game system nav context

sse endpoint

prisma/schema.prisma

@@ -14,9 +14,10 @@ model GameSystem {
   authorId  String
   followers GameSystemFollows[]
 
-  name     String   @unique
-  created  DateTime @default(now())
-  isPublic Boolean  @default(false)
+  name       String   @unique
+  created    DateTime @default(now())
+  isPublic   Boolean  @default(false)
+  thingUsers User[]   @relation("currentGame")
 }
 
 model Schema {
@@ -106,6 +107,8 @@ model User {
   sessions            Session[]
   PublicationRevision PublicationRevision[]
   followedSystems     GameSystemFollows[]
+  currentGameSystem   GameSystem?           @relation("currentGame", fields: [currentGameSystemId], references: [id])
+  currentGameSystemId String?
 
   name          String?
   username      String?   @unique