feat: 添加虚拟调度器聊天 ID 前缀，跳过不应发送到外部通道的消息

src/gateway/outbound_dispatcher.rs

@@ -12,6 +12,9 @@ pub struct OutboundDispatcher {
     channels: Arc<RwLock<HashMap<String, Arc<dyn Channel + Send + Sync>>>>,
 }
 
+/// Prefix for virtual scheduler chat IDs that should not be sent to external channels.
+const SCHEDULER_VIRTUAL_CHAT_ID_PREFIX: &str = "scheduler/";
+
 impl OutboundDispatcher {
     pub fn new(bus: Arc<MessageBus>) -> Self {
         Self {
@@ -40,6 +43,17 @@ impl OutboundDispatcher {
                 "OutboundDispatcher received message"
             );
 
+            // Skip messages with virtual scheduler chat IDs (e.g., "scheduler/job_id")
+            // These are internal messages from SilentAgentTask that should not be sent externally
+            if msg.chat_id.starts_with(SCHEDULER_VIRTUAL_CHAT_ID_PREFIX) {
+                tracing::debug!(
+                    channel = %msg.channel,
+                    chat_id = %msg.chat_id,
+                    "Skipping message with virtual scheduler chat_id"
+                );
+                continue;
+            }
+
             let channel_name = msg.channel.clone();
             let channel = self.channels.read().await.get(&channel_name).cloned();