refactor: 移除 show_tool_results 开关，始终实时推送工具调用消息

简化工具消息推送逻辑，去掉条件判断，让所有工具消息（含结果）
直接通过 emit_live_tool_call_message 实时发送给用户。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/agent/agent_loop.rs

@@ -975,7 +975,8 @@ impl AgentLoop {
                             },
                         );
                         messages.push(tool_message.clone());
-                        emitted_messages.push(tool_message);
+                        emitted_messages.push(tool_message.clone());
+                        self.emit_live_tool_call_message(tool_message).await;
                     }
                     LoopDetectionResult::Ok => {
                         let tool_message = ChatMessage::tool_with_state(
@@ -989,7 +990,8 @@ impl AgentLoop {
                             },
                         );
                         messages.push(tool_message.clone());
-                        emitted_messages.push(tool_message);
+                        emitted_messages.push(tool_message.clone());
+                        self.emit_live_tool_call_message(tool_message).await;
                     }
                 }
             }
@@ -1111,10 +1113,6 @@ impl AgentLoop {
     }
 
     async fn emit_live_tool_call_message(&self, message: ChatMessage) {
-        if !message.is_assistant_tool_call_message() {
-            return;
-        }
-
         if let Some(handler) = &self.emitted_message_handler {
             handler.handle(message).await;
         }

src/gateway/processor.rs

@@ -223,7 +223,6 @@ impl InboundProcessor {
             inbound.channel.clone(),
             inbound.chat_id.clone(),
             inbound.forwarded_metadata.clone(),
-            self.session_manager.show_tool_results(),
         ));
 
         match self

src/gateway/session.rs

@@ -17,6 +17,7 @@ use uuid::Uuid;
 
 use super::agent_factory::{AgentBuildRequest, AgentFactory};
 use super::cli_session::CliSessionService;
+#[cfg(test)]
 use super::execution::should_display_message_to_user;
 #[cfg(test)]
 use super::memory_maintenance::{
@@ -51,7 +52,6 @@ pub struct BusToolCallEmitter {
     channel_name: String,
     chat_id: String,
     metadata: HashMap<String, String>,
-    show_tool_results: bool,
 }
 
 impl BusToolCallEmitter {
@@ -60,14 +60,12 @@ impl BusToolCallEmitter {
         channel_name: impl Into<String>,
         chat_id: impl Into<String>,
         metadata: HashMap<String, String>,
-        show_tool_results: bool,
     ) -> Self {
         Self {
             bus,
             channel_name: channel_name.into(),
             chat_id: chat_id.into(),
             metadata,
-            show_tool_results,
         }
     }
 }
@@ -75,10 +73,6 @@ impl BusToolCallEmitter {
 #[async_trait]
 impl EmittedMessageHandler for BusToolCallEmitter {
     async fn handle(&self, message: ChatMessage) {
-        if !should_display_message_to_user(self.show_tool_results, &message) {
-            return;
-        }
-
         for outbound in OutboundMessage::from_chat_message(
             &self.channel_name,
             &self.chat_id,
@@ -664,6 +658,7 @@ impl SessionManager {
 mod tests {
     use super::*;
     use crate::bus::MessageBus;
+    use crate::bus::message::OutboundEventKind;
     use crate::gateway::tool_registry_factory::ToolRegistryFactory;
     use crate::storage::MemoryRecord;
     use crate::tools::NoopSessionMessageSender;
@@ -1741,7 +1736,7 @@ mod tests {
     }
 
     #[tokio::test]
-    async fn test_bus_tool_call_emitter_hides_completed_tool_results_when_disabled() {
+    async fn test_bus_tool_call_emitter_emits_completed_tool_results() {
         let bus = MessageBus::new(4);
         let emitter =
             BusToolCallEmitter::new(
@@ -1749,18 +1744,16 @@ mod tests {
                 "test-channel",
                 "chat-1",
                 HashMap::new(),
-                false,
             );
 
         emitter
             .handle(ChatMessage::tool("call-1", "calculator", "2"))
             .await;
 
-        assert!(
-            tokio::time::timeout(std::time::Duration::from_millis(50), bus.consume_outbound())
-                .await
-                .is_err()
-        );
+        let msg = tokio::time::timeout(std::time::Duration::from_millis(500), bus.consume_outbound())
+            .await
+            .expect("should have received an outbound message");
+        assert_eq!(msg.event_kind, OutboundEventKind::ToolResult);
     }
 
     #[tokio::test]