fix: major fixes

v1/isolation/isolation.go

@@ -0,0 +1,22 @@
+package isolation
+
+import (
+	"errors"
+
+	"github.com/google/uuid"
+)
+
+var ErrNotOwner = errors.New("isolation: lock is not held by this owner")
+
+type Key struct {
+	UpdateID uuid.UUID // владелец
+	UserID   int64
+	ChatID   int64
+}
+
+type Scope struct {
+	UserID int64
+	ChatID int64
+}
+
+func (k Key) Scope() Scope { return Scope{UserID: k.UserID, ChatID: k.ChatID} }