style: 合入后修 gofmt/govet 与 RegistrationView 类型检查

internal/app/message/push.go

@@ -191,15 +191,15 @@ LIMIT ?`, endpointID, room)
 	var items []pushItem
 	for rows.Next() {
 		var it pushItem
-		if err := rows.Scan(&it.seq, &it.sendAt, &it.keep, &it.expireAt, &it.msgID, &it.senderID, &it.destKind, &it.destID, &it.meta, &it.contentType, &it.bodyEnc, &it.body); err != nil {
+		if scanErr := rows.Scan(&it.seq, &it.sendAt, &it.keep, &it.expireAt, &it.msgID, &it.senderID, &it.destKind, &it.destID, &it.meta, &it.contentType, &it.bodyEnc, &it.body); scanErr != nil {
 			_ = rows.Close()
-			return err
+			return scanErr
 		}
 		items = append(items, it)
 	}
 	_ = rows.Close()
-	if err := rows.Err(); err != nil {
-		return err
+	if rowsErr := rows.Err(); rowsErr != nil {
+		return rowsErr
 	}
 
 	var toClaim []pushItem
@@ -217,9 +217,9 @@ LIMIT ?`, endpointID, room)
 			Meta:     decodeMetaJSON(it.meta),
 			SendAtMs: it.sendAt,
 		}
-		payload, err := protocol.Marshal(msg)
-		if err != nil {
-			return err
+		payload, marshErr := protocol.Marshal(msg)
+		if marshErr != nil {
+			return marshErr
 		}
 		limit := effectivePayloadLimit(live.MaxPacketSize, live.MaxReceiveBytes)
 		if limit > 0 && len(payload) > limit {