feat(channel): add tool status display and configurable message timeout

Show real-time tool execution status in channels with draft support
(e.g. Telegram with stream_mode=partial). During processing, the draft
message shows "Thinking..." and progressively adds tool lines like
"🔧 shell(ls -la)" as tools execute. The final response replaces
all status lines cleanly via finalize_draft.

Also makes the channel message timeout configurable via
agent.channel_message_timeout_secs (default 300s), replacing the
previously hardcoded constant.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/channels/mod.rs

@@ -30,7 +30,7 @@ pub use telegram::TelegramChannel;
 pub use traits::{Channel, SendMessage};
 pub use whatsapp::WhatsAppChannel;
 
-use crate::agent::loop_::{build_tool_instructions, run_tool_call_loop};
+use crate::agent::loop_::{build_tool_instructions, run_tool_call_loop, ToolStatusEvent};
 use crate::config::Config;
 use crate::identity;
 use crate::memory::{self, Memory};
@@ -60,9 +60,6 @@ const BOOTSTRAP_MAX_CHARS: usize = 20_000;
 
 const DEFAULT_CHANNEL_INITIAL_BACKOFF_SECS: u64 = 2;
 const DEFAULT_CHANNEL_MAX_BACKOFF_SECS: u64 = 60;
-/// Timeout for processing a single channel message (LLM + tools).
-/// 300s for on-device LLMs (Ollama) which are slower than cloud APIs.
-const CHANNEL_MESSAGE_TIMEOUT_SECS: u64 = 300;
 const CHANNEL_PARALLELISM_PER_CHANNEL: usize = 4;
 const CHANNEL_MIN_IN_FLIGHT_MESSAGES: usize = 8;
 const CHANNEL_MAX_IN_FLIGHT_MESSAGES: usize = 64;
@@ -120,6 +117,7 @@ struct ChannelRuntimeContext {
     reliability: Arc<crate::config::ReliabilityConfig>,
     provider_runtime_options: providers::ProviderRuntimeOptions,
     workspace_dir: Arc<PathBuf>,
+    channel_message_timeout_secs: u64,
 }
 
 fn conversation_memory_key(msg: &traits::ChannelMessage) -> String {
@@ -523,6 +521,15 @@ fn log_worker_join_result(result: Result<(), tokio::task::JoinError>) {
     }
 }
 
+/// Compose tool status lines with the current draft content for display.
+fn format_tool_display(tool_lines: &str, content: &str) -> String {
+    if tool_lines.is_empty() {
+        content.to_string()
+    } else {
+        format!("{tool_lines}{content}")
+    }
+}
+
 fn spawn_scoped_typing_task(
     channel: Arc<dyn Channel>,
     recipient: String,
@@ -632,19 +639,25 @@ async fn process_channel_message(ctx: Arc<ChannelRuntimeContext>, msg: traits::C
         .as_ref()
         .map_or(false, |ch| ch.supports_draft_updates());
 
-    // Set up streaming channel if supported
+    // Set up streaming channels if supported
     let (delta_tx, delta_rx) = if use_streaming {
         let (tx, rx) = tokio::sync::mpsc::channel::<String>(64);
         (Some(tx), Some(rx))
     } else {
         (None, None)
     };
+    let (tool_status_tx, tool_status_rx) = if use_streaming {
+        let (tx, rx) = tokio::sync::mpsc::channel::<ToolStatusEvent>(32);
+        (Some(tx), Some(rx))
+    } else {
+        (None, None)
+    };
 
     // Send initial draft message if streaming
     let draft_message_id = if use_streaming {
         if let Some(channel) = target_channel.as_ref() {
             match channel
-                .send_draft(&SendMessage::new("...", &msg.reply_target))
+                .send_draft(&SendMessage::new("Thinking...", &msg.reply_target))
                 .await
             {
                 Ok(id) => id,
@@ -660,24 +673,88 @@ async fn process_channel_message(ctx: Arc<ChannelRuntimeContext>, msg: traits::C
         None
     };
 
-    // Spawn a task to forward streaming deltas to draft updates
+    // Spawn a task to merge tool status events and streaming deltas into draft updates
-    let draft_updater = if let (Some(mut rx), Some(draft_id_ref), Some(channel_ref)) = (
+    let draft_updater = if let (Some(draft_id_ref), Some(channel_ref)) =
-        delta_rx,
+        (draft_message_id.as_deref(), target_channel.as_ref())
-        draft_message_id.as_deref(),
+    {
-        target_channel.as_ref(),
-    ) {
         let channel = Arc::clone(channel_ref);
         let reply_target = msg.reply_target.clone();
         let draft_id = draft_id_ref.to_string();
+        let mut delta_rx = delta_rx;
+        let mut tool_status_rx = tool_status_rx;
         Some(tokio::spawn(async move {
+            let mut tool_lines = String::new();
             let mut accumulated = String::new();
-            while let Some(delta) = rx.recv().await {
+
-                accumulated.push_str(&delta);
+            loop {
-                if let Err(e) = channel
+                tokio::select! {
-                    .update_draft(&reply_target, &draft_id, &accumulated)
+                    evt = async {
-                    .await
+                        match tool_status_rx.as_mut() {
-                {
+                            Some(rx) => rx.recv().await,
-                    tracing::debug!("Draft update failed: {e}");
+                            None => std::future::pending().await,
+                        }
+                    } => {
+                        match evt {
+                            Some(ToolStatusEvent::Thinking) => {
+                                let display = format_tool_display(&tool_lines, "Thinking...");
+                                if let Err(e) = channel
+                                    .update_draft(&reply_target, &draft_id, &display)
+                                    .await
+                                {
+                                    tracing::debug!("Draft update failed: {e}");
+                                }
+                            }
+                            Some(ToolStatusEvent::ToolStart { name, detail }) => {
+                                let label = match detail {
+                                    Some(d) => format!("\u{1f527} {name}({d})\n"),
+                                    None => format!("\u{1f527} {name}\n"),
+                                };
+                                tool_lines.push_str(&label);
+                                let display =
+                                    format_tool_display(&tool_lines, "Thinking...");
+                                if let Err(e) = channel
+                                    .update_draft(&reply_target, &draft_id, &display)
+                                    .await
+                                {
+                                    tracing::debug!("Draft update failed: {e}");
+                                }
+                            }
+                            None => {
+                                // Tool status channel closed; keep consuming deltas
+                                tool_status_rx = None;
+                                if delta_rx.is_none() {
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                    delta = async {
+                        match delta_rx.as_mut() {
+                            Some(rx) => rx.recv().await,
+                            None => std::future::pending().await,
+                        }
+                    } => {
+                        match delta {
+                            Some(text) => {
+                                accumulated.push_str(&text);
+                                let display =
+                                    format_tool_display(&tool_lines, &accumulated);
+                                if let Err(e) = channel
+                                    .update_draft(&reply_target, &draft_id, &display)
+                                    .await
+                                {
+                                    tracing::debug!("Draft update failed: {e}");
+                                }
+                            }
+                            None => {
+                                // Delta channel closed; keep consuming tool events
+                                delta_rx = None;
+                                if tool_status_rx.is_none() {
+                                    break;
+                                }
+                            }
+                        }
+                    }
                 }
             }
         }))
@@ -696,7 +773,7 @@ async fn process_channel_message(ctx: Arc<ChannelRuntimeContext>, msg: traits::C
     };
 
     let llm_result = tokio::time::timeout(
-        Duration::from_secs(CHANNEL_MESSAGE_TIMEOUT_SECS),
+        Duration::from_secs(ctx.channel_message_timeout_secs),
         run_tool_call_loop(
             active_provider.as_ref(),
             &mut history,
@@ -710,6 +787,7 @@ async fn process_channel_message(ctx: Arc<ChannelRuntimeContext>, msg: traits::C
             msg.channel.as_str(),
             ctx.max_tool_iterations,
             delta_tx,
+            tool_status_tx,
         ),
     )
     .await;
@@ -789,7 +867,7 @@ async fn process_channel_message(ctx: Arc<ChannelRuntimeContext>, msg: traits::C
         Err(_) => {
             let timeout_msg = format!(
                 "LLM response timed out after {}s",
-                CHANNEL_MESSAGE_TIMEOUT_SECS
+                ctx.channel_message_timeout_secs
             );
             eprintln!(
                 "  ❌ {} (elapsed: {}ms)",
@@ -1835,6 +1913,7 @@ pub async fn start_channels(config: Config) -> Result<()> {
         reliability: Arc::new(config.reliability.clone()),
         provider_runtime_options,
         workspace_dir: Arc::new(config.workspace_dir.clone()),
+        channel_message_timeout_secs: config.agent.channel_message_timeout_secs,
     });
 
     run_message_dispatch_loop(rx, runtime_ctx, max_in_flight_messages).await;

src/config/schema.rs

@@ -253,6 +253,10 @@ pub struct AgentConfig {
     pub parallel_tools: bool,
     #[serde(default = "default_agent_tool_dispatcher")]
     pub tool_dispatcher: String,
+    /// Timeout in seconds for processing a single channel message (LLM + tools).
+    /// Default 300s accommodates on-device LLMs (Ollama) which are slower than cloud APIs.
+    #[serde(default = "default_channel_message_timeout_secs")]
+    pub channel_message_timeout_secs: u64,
 }
 
 fn default_agent_max_tool_iterations() -> usize {
@@ -267,6 +271,10 @@ fn default_agent_tool_dispatcher() -> String {
     "auto".into()
 }
 
+fn default_channel_message_timeout_secs() -> u64 {
+    300
+}
+
 impl Default for AgentConfig {
     fn default() -> Self {
         Self {
@@ -275,6 +283,7 @@ impl Default for AgentConfig {
             max_history_messages: default_agent_max_history_messages(),
             parallel_tools: false,
             tool_dispatcher: default_agent_tool_dispatcher(),
+            channel_message_timeout_secs: default_channel_message_timeout_secs(),
         }
     }
 }