Send compat-msgid to compat clients (BF old android client)

scnserver/logic/appcontext.go

@@ -13,6 +13,15 @@ import (
 	"time"
 )
 
+type TxContext interface {
+	Deadline() (deadline time.Time, ok bool)
+	Done() <-chan struct{}
+	Err() error
+	Value(key any) any
+
+	GetOrCreateTransaction(db db.DatabaseImpl) (sq.Tx, error)
+}
+
 type AppContext struct {
 	app         *Application
 	inner       context.Context