diff --git a/extensions/synology-chat/src/types.ts b/extensions/synology-chat/src/types.ts
index 7ba222531c6..842c2ee97bb 100644
--- a/extensions/synology-chat/src/types.ts
+++ b/extensions/synology-chat/src/types.ts
@@ -2,8 +2,7 @@
  * Type definitions for the Synology Chat channel plugin.
  */
 
-/** Raw channel config from openclaw.json channels.synology-chat */
-export interface SynologyChatChannelConfig {
+type SynologyChatConfigFields = {
   enabled?: boolean;
   token?: string;
   incomingUrl?: string;
@@ -14,22 +13,15 @@ export interface SynologyChatChannelConfig {
   rateLimitPerMinute?: number;
   botName?: string;
   allowInsecureSsl?: boolean;
+};
+
+/** Raw channel config from openclaw.json channels.synology-chat */
+export interface SynologyChatChannelConfig extends SynologyChatConfigFields {
   accounts?: Record<string, SynologyChatAccountRaw>;
 }
 
 /** Raw per-account config (overrides base config) */
-export interface SynologyChatAccountRaw {
-  enabled?: boolean;
-  token?: string;
-  incomingUrl?: string;
-  nasHost?: string;
-  webhookPath?: string;
-  dmPolicy?: "open" | "allowlist" | "disabled";
-  allowedUserIds?: string | string[];
-  rateLimitPerMinute?: number;
-  botName?: string;
-  allowInsecureSsl?: boolean;
-}
+export interface SynologyChatAccountRaw extends SynologyChatConfigFields {}
 
 /** Fully resolved account config with defaults applied */
 export interface ResolvedSynologyChatAccount {