refactor(jpush): move vendor field handling into ThirdPartyChannel struct

Move the vendor switch logic into the ThirdPartyChannel struct as Set/IsEmpty/Normalize
methods to improve encapsulation and eliminate code duplication in the vendor params
builder. Also simplify messageToParams to reuse buildMessagePayload results and remove
unused notification_type extras from push notifications.

internal/pkg/jpush/client.go

@@ -78,6 +78,42 @@ type ThirdPartyChannel struct {
 	Honor  map[string]any `json:"honor,omitempty"`
 }
 
+// Set 按厂商标识写入对应厂商的私有字段
+// vendor 对应 third_party_channel 的 key（xiaomi/huawei/oppo/vivo/meizu/fcm/honor）
+// 未知厂商将被忽略
+func (t *ThirdPartyChannel) Set(vendor string, m map[string]any) {
+	switch vendor {
+	case "xiaomi":
+		t.Xiaomi = m
+	case "huawei":
+		t.Huawei = m
+	case "oppo":
+		t.OPPO = m
+	case "vivo":
+		t.VIVO = m
+	case "meizu":
+		t.Meizu = m
+	case "fcm":
+		t.FCM = m
+	case "honor":
+		t.Honor = m
+	}
+}
+
+// IsEmpty 判断是否所有厂商字段均为空
+func (t *ThirdPartyChannel) IsEmpty() bool {
+	return t.Xiaomi == nil && t.Huawei == nil && t.OPPO == nil &&
+		t.VIVO == nil && t.Meizu == nil && t.Honor == nil && t.FCM == nil
+}
+
+// Normalize 当所有厂商字段为空时返回 nil，避免序列化出空的 third_party_channel 对象
+func (t *ThirdPartyChannel) Normalize() *ThirdPartyChannel {
+	if t == nil || t.IsEmpty() {
+		return nil
+	}
+	return t
+}
+
 type AndroidNotif struct {
 	Alert       string         `json:"alert"`
 	Title       string         `json:"title,omitempty"`

internal/pkg/jpush/vendor/params.go

@@ -120,32 +120,11 @@ func (f *Factory) Build(params MessageParams, cfg config.ChannelConfig) *PushPay
 		if m == nil {
 			continue
 		}
-		switch c.VendorName() {
-		case "xiaomi":
-			tpc.Xiaomi = m
-		case "huawei":
-			tpc.Huawei = m
-		case "oppo":
-			tpc.OPPO = m
-		case "vivo":
-			tpc.VIVO = m
-		case "meizu":
-			tpc.Meizu = m
-		case "honor":
-			tpc.Honor = m
-		case "fcm":
-			tpc.FCM = m
-		}
-	}
-
-	// 全部厂商字段为空则置 nil，避免序列化出空的 third_party_channel
-	if tpc.Xiaomi == nil && tpc.Huawei == nil && tpc.OPPO == nil &&
-		tpc.VIVO == nil && tpc.Meizu == nil && tpc.Honor == nil && tpc.FCM == nil {
-		tpc = nil
+		tpc.Set(c.VendorName(), m)
 	}
 
 	return &PushPayload{
 		Notification: notification,
-		TPC:          tpc,
+		TPC:          tpc.Normalize(),
 	}
 }

internal/service/push_service.go

@@ -617,17 +617,18 @@ func (s *pushServiceImpl) buildPayload(params vendor.MessageParams) *vendor.Push
 
 // messageToParams 从 model.Message 提取厂商无关的统一参数
 // 用于 PushToUser / worker / retry 等通用路径
+// 复用 buildMessagePayload 的计算结果，避免重复解析 message
 func (s *pushServiceImpl) messageToParams(message *model.Message) vendor.MessageParams {
-	_ = message.Decrypt()
 	payload := buildMessagePayload(message)
-	scene := s.resolveChannelScene(message)
-
+	// senderName 复用 payload.Extras 中已提取的 actor_name，无需再次访问 ExtraData
 	senderName := ""
-	if message.ExtraData != nil {
-		senderName = message.ExtraData.ActorName
+	if name, ok := payload.Extras["actor_name"]; ok {
+		if n, ok := name.(string); ok {
+			senderName = n
+		}
 	}
 	return vendor.MessageParams{
-		Scene:       scene,
+		Scene:       s.resolveChannelScene(message),
 		Title:       payload.Title,
 		Body:        payload.Content,
 		SenderName:  senderName,
@@ -787,7 +788,6 @@ func (s *pushServiceImpl) PushChatMessage(ctx context.Context, userID string, co
 		content = "[非文本消息]"
 	}
 	extras := map[string]any{
-		"notification_type": "chat_message",
 		"message_id":        message.ID,
 		"conversation_id":   message.ConversationID,
 		"conversation_type": string(convType),
@@ -901,7 +901,6 @@ func (s *pushServiceImpl) PushSystemNotification(ctx context.Context, userID str
 				}
 				extras := map[string]any{
 					"notification_id": fmt.Sprintf("%d", notification.ID),
-					"notification_type": string(notification.Type),
 				}
 				if notification.ExtraData != nil {
 					extras["actor_id"] = notification.ExtraData.ActorIDStr