feat: stream persistent

backend/internal/store/types.go

@@ -28,6 +28,14 @@ type Chat struct {
 	Messages []*Message `json:"messages"`
 }
 
+type MessageStatus string
+
+const (
+	MessageStatusStreaming MessageStatus = "streaming"
+	MessageStatusComplete  MessageStatus = "complete"
+	MessageStatusFailed    MessageStatus = "failed"
+)
+
 type Message struct {
 	baseModel
 
@@ -35,5 +43,6 @@ type Message struct {
 	Role     string              `json:"role"`
 	Thinking string              `json:"thinking"`
 	Content  string              `json:"content"`
+	Status   MessageStatus       `json:"status,omitempty"`
 	Stats    *types.MessageStats `json:"stats,omitempty"`
 }