feat: 新增技能编排引擎和工作流构建器组件

refactor: 统一Hands系统常量到单个源文件
refactor: 更新Hands中文名称和描述

fix: 修复技能市场在连接状态变化时重新加载
fix: 修复身份变更提案的错误处理逻辑

docs: 更新多个功能文档的验证状态和实现位置
docs: 更新Hands系统文档

test: 添加测试文件验证工作区路径

crates/zclaw-runtime/src/loop_runner.rs

@@ -94,78 +94,110 @@ impl AgentLoop {
     }
 
     /// Run the agent loop with a single message
+    /// Implements complete agent loop: LLM → Tool Call → Tool Result → LLM → Final Response
     pub async fn run(&self, session_id: SessionId, input: String) -> Result<AgentLoopResult> {
         // Add user message to session
         let user_message = Message::user(input);
         self.memory.append_message(&session_id, &user_message).await?;
 
         // Get all messages for context
-        let messages = self.memory.get_messages(&session_id).await?;
+        let mut messages = self.memory.get_messages(&session_id).await?;
 
-        // Build completion request with configured model
-        let request = CompletionRequest {
-            model: self.model.clone(),
-            system: self.system_prompt.clone(),
-            messages,
-            tools: self.tools.definitions(),
-            max_tokens: Some(self.max_tokens),
-            temperature: Some(self.temperature),
-            stop: Vec::new(),
-            stream: false,
-        };
+        let max_iterations = 10;
+        let mut iterations = 0;
+        let mut total_input_tokens = 0u32;
+        let mut total_output_tokens = 0u32;
 
-        // Call LLM
-        let response = self.driver.complete(request).await?;
-
-        // Create tool context
-        let tool_context = self.create_tool_context(session_id.clone());
-
-        // Process response and execute tools
-        let mut response_parts = Vec::new();
-        let mut tool_results = Vec::new();
-
-        for block in &response.content {
-            match block {
-                ContentBlock::Text { text } => {
-                    response_parts.push(text.clone());
-                }
-                ContentBlock::Thinking { thinking } => {
-                    response_parts.push(format!("[思考] {}", thinking));
-                }
-                ContentBlock::ToolUse { id, name, input } => {
-                    // Execute the tool
-                    let tool_result = match self.execute_tool(name, input.clone(), &tool_context).await {
-                        Ok(result) => {
-                            response_parts.push(format!("[工具执行成功] {}", name));
-                            result
-                        }
-                        Err(e) => {
-                            response_parts.push(format!("[工具执行失败] {}: {}", name, e));
-                            serde_json::json!({ "error": e.to_string() })
-                        }
-                    };
-                    tool_results.push((id.clone(), name.clone(), tool_result));
-                }
+        loop {
+            iterations += 1;
+            if iterations > max_iterations {
+                // Save the state before returning
+                let error_msg = "达到最大迭代次数，请简化请求";
+                self.memory.append_message(&session_id, &Message::assistant(error_msg)).await?;
+                return Ok(AgentLoopResult {
+                    response: error_msg.to_string(),
+                    input_tokens: total_input_tokens,
+                    output_tokens: total_output_tokens,
+                    iterations,
+                });
             }
+
+            // Build completion request
+            let request = CompletionRequest {
+                model: self.model.clone(),
+                system: self.system_prompt.clone(),
+                messages: messages.clone(),
+                tools: self.tools.definitions(),
+                max_tokens: Some(self.max_tokens),
+                temperature: Some(self.temperature),
+                stop: Vec::new(),
+                stream: false,
+            };
+
+            // Call LLM
+            let response = self.driver.complete(request).await?;
+            total_input_tokens += response.input_tokens;
+            total_output_tokens += response.output_tokens;
+
+            // Extract tool calls from response
+            let tool_calls: Vec<(String, String, serde_json::Value)> = response.content.iter()
+                .filter_map(|block| match block {
+                    ContentBlock::ToolUse { id, name, input } => Some((id.clone(), name.clone(), input.clone())),
+                    _ => None,
+                })
+                .collect();
+
+            // If no tool calls, we have the final response
+            if tool_calls.is_empty() {
+                // Extract text content
+                let text = response.content.iter()
+                    .filter_map(|block| match block {
+                        ContentBlock::Text { text } => Some(text.clone()),
+                        ContentBlock::Thinking { thinking } => Some(format!("[思考] {}", thinking)),
+                        _ => None,
+                    })
+                    .collect::<Vec<_>>()
+                    .join("\n");
+
+                // Save final assistant message
+                self.memory.append_message(&session_id, &Message::assistant(&text)).await?;
+
+                return Ok(AgentLoopResult {
+                    response: text,
+                    input_tokens: total_input_tokens,
+                    output_tokens: total_output_tokens,
+                    iterations,
+                });
+            }
+
+            // There are tool calls - add assistant message with tool calls to history
+            for (id, name, input) in &tool_calls {
+                messages.push(Message::tool_use(id, zclaw_types::ToolId::new(name), input.clone()));
+            }
+
+            // Create tool context and execute all tools
+            let tool_context = self.create_tool_context(session_id.clone());
+            for (id, name, input) in tool_calls {
+                let tool_result = match self.execute_tool(&name, input, &tool_context).await {
+                    Ok(result) => result,
+                    Err(e) => serde_json::json!({ "error": e.to_string() }),
+                };
+
+                // Add tool result to messages
+                messages.push(Message::tool_result(
+                    id,
+                    zclaw_types::ToolId::new(&name),
+                    tool_result,
+                    false, // is_error - we include errors in the result itself
+                ));
+            }
+
+            // Continue the loop - LLM will process tool results and generate final response
         }
-
-        // If there were tool calls, we might need to continue the conversation
-        // For now, just include tool results in the response
-        for (id, name, result) in tool_results {
-            response_parts.push(format!("[工具结果 {}]: {}", name, serde_json::to_string(&result).unwrap_or_default()));
-        }
-
-        let response_text = response_parts.join("\n");
-
-        Ok(AgentLoopResult {
-            response: response_text,
-            input_tokens: response.input_tokens,
-            output_tokens: response.output_tokens,
-            iterations: 1,
-        })
     }
 
     /// Run the agent loop with streaming
+    /// Implements complete agent loop with multi-turn tool calling support
     pub async fn run_streaming(
         &self,
         session_id: SessionId,
@@ -180,18 +212,6 @@ impl AgentLoop {
         // Get all messages for context
         let messages = self.memory.get_messages(&session_id).await?;
 
-        // Build completion request
-        let request = CompletionRequest {
-            model: self.model.clone(),
-            system: self.system_prompt.clone(),
-            messages,
-            tools: self.tools.definitions(),
-            max_tokens: Some(self.max_tokens),
-            temperature: Some(self.temperature),
-            stop: Vec::new(),
-            stream: true,
-        };
-
         // Clone necessary data for the async task
         let session_id_clone = session_id.clone();
         let memory = self.memory.clone();
@@ -199,116 +219,170 @@ impl AgentLoop {
         let tools = self.tools.clone();
         let skill_executor = self.skill_executor.clone();
         let agent_id = self.agent_id.clone();
+        let system_prompt = self.system_prompt.clone();
+        let model = self.model.clone();
+        let max_tokens = self.max_tokens;
+        let temperature = self.temperature;
 
         tokio::spawn(async move {
-            let mut full_response = String::new();
-            let mut input_tokens = 0u32;
-            let mut output_tokens = 0u32;
-            let mut pending_tool_calls: Vec<(String, String, serde_json::Value)> = Vec::new();
+            let mut messages = messages;
+            let max_iterations = 10;
+            let mut iteration = 0;
+            let mut total_input_tokens = 0u32;
+            let mut total_output_tokens = 0u32;
 
-            let mut stream = driver.stream(request);
-
-            while let Some(chunk_result) = stream.next().await {
-                match chunk_result {
-                    Ok(chunk) => {
-                        // Track response and tokens
-                        match &chunk {
-                            StreamChunk::TextDelta { delta } => {
-                                full_response.push_str(delta);
-                                let _ = tx.send(LoopEvent::Delta(delta.clone())).await;
-                            }
-                            StreamChunk::ThinkingDelta { delta } => {
-                                let _ = tx.send(LoopEvent::Delta(format!("[思考] {}", delta))).await;
-                            }
-                            StreamChunk::ToolUseStart { id, name } => {
-                                pending_tool_calls.push((id.clone(), name.clone(), serde_json::Value::Null));
-                                let _ = tx.send(LoopEvent::ToolStart {
-                                    name: name.clone(),
-                                    input: serde_json::Value::Null,
-                                }).await;
-                            }
-                            StreamChunk::ToolUseDelta { id, delta } => {
-                                // Update the pending tool call's input
-                                if let Some(tool) = pending_tool_calls.iter_mut().find(|(tid, _, _)| tid == id) {
-                                    // For simplicity, just store the delta as the input
-                                    // In a real implementation, you'd accumulate and parse JSON
-                                    tool.2 = serde_json::Value::String(delta.clone());
-                                }
-                                let _ = tx.send(LoopEvent::Delta(format!("[工具参数] {}", delta))).await;
-                            }
-                            StreamChunk::ToolUseEnd { id, input } => {
-                                // Update the tool call with final input
-                                if let Some(tool) = pending_tool_calls.iter_mut().find(|(tid, _, _)| tid == id) {
-                                    tool.2 = input.clone();
-                                }
-                            }
-                            StreamChunk::Complete { input_tokens: it, output_tokens: ot, .. } => {
-                                input_tokens = *it;
-                                output_tokens = *ot;
-                            }
-                            StreamChunk::Error { message } => {
-                                let _ = tx.send(LoopEvent::Error(message.clone())).await;
-                            }
-                        }
-                    }
-                    Err(e) => {
-                        let _ = tx.send(LoopEvent::Error(e.to_string())).await;
-                    }
+            'outer: loop {
+                iteration += 1;
+                if iteration > max_iterations {
+                    let _ = tx.send(LoopEvent::Error("达到最大迭代次数".to_string())).await;
+                    break;
                 }
-            }
 
-            // Execute pending tool calls
-            for (_id, name, input) in pending_tool_calls {
-                // Create tool context
-                let tool_context = ToolContext {
-                    agent_id: agent_id.clone(),
-                    working_directory: None,
-                    session_id: Some(session_id_clone.to_string()),
-                    skill_executor: skill_executor.clone(),
+                // Notify iteration start
+                let _ = tx.send(LoopEvent::IterationStart {
+                    iteration,
+                    max_iterations,
+                }).await;
+
+                // Build completion request
+                let request = CompletionRequest {
+                    model: model.clone(),
+                    system: system_prompt.clone(),
+                    messages: messages.clone(),
+                    tools: tools.definitions(),
+                    max_tokens: Some(max_tokens),
+                    temperature: Some(temperature),
+                    stop: Vec::new(),
+                    stream: true,
                 };
 
-                // Execute the tool
-                let result = if let Some(tool) = tools.get(&name) {
-                    match tool.execute(input.clone(), &tool_context).await {
-                        Ok(output) => {
-                            let _ = tx.send(LoopEvent::ToolEnd {
-                                name: name.clone(),
-                                output: output.clone(),
-                            }).await;
-                            output
+                let mut stream = driver.stream(request);
+                let mut pending_tool_calls: Vec<(String, String, serde_json::Value)> = Vec::new();
+                let mut iteration_text = String::new();
+
+                // Process stream chunks
+                tracing::debug!("[AgentLoop] Starting to process stream chunks");
+                while let Some(chunk_result) = stream.next().await {
+                    match chunk_result {
+                        Ok(chunk) => {
+                            match &chunk {
+                                StreamChunk::TextDelta { delta } => {
+                                    iteration_text.push_str(delta);
+                                    let _ = tx.send(LoopEvent::Delta(delta.clone())).await;
+                                }
+                                StreamChunk::ThinkingDelta { delta } => {
+                                    let _ = tx.send(LoopEvent::Delta(format!("[思考] {}", delta))).await;
+                                }
+                                StreamChunk::ToolUseStart { id, name } => {
+                                    tracing::debug!("[AgentLoop] ToolUseStart: id={}, name={}", id, name);
+                                    pending_tool_calls.push((id.clone(), name.clone(), serde_json::Value::Null));
+                                }
+                                StreamChunk::ToolUseDelta { id, delta } => {
+                                    // Accumulate tool input delta (internal processing, not sent to user)
+                                    if let Some(tool) = pending_tool_calls.iter_mut().find(|(tid, _, _)| tid == id) {
+                                        // Try to accumulate JSON string
+                                        match &mut tool.2 {
+                                            serde_json::Value::String(s) => s.push_str(delta),
+                                            serde_json::Value::Null => tool.2 = serde_json::Value::String(delta.clone()),
+                                            _ => {}
+                                        }
+                                    }
+                                }
+                                StreamChunk::ToolUseEnd { id, input } => {
+                                    tracing::debug!("[AgentLoop] ToolUseEnd: id={}, input={:?}", id, input);
+                                    // Update with final parsed input and emit ToolStart event
+                                    if let Some(tool) = pending_tool_calls.iter_mut().find(|(tid, _, _)| tid == id) {
+                                        tool.2 = input.clone();
+                                        let _ = tx.send(LoopEvent::ToolStart { name: tool.1.clone(), input: input.clone() }).await;
+                                    }
+                                }
+                                StreamChunk::Complete { input_tokens: it, output_tokens: ot, .. } => {
+                                    tracing::debug!("[AgentLoop] Stream complete: input_tokens={}, output_tokens={}", it, ot);
+                                    total_input_tokens += *it;
+                                    total_output_tokens += *ot;
+                                }
+                                StreamChunk::Error { message } => {
+                                    tracing::error!("[AgentLoop] Stream error: {}", message);
+                                    let _ = tx.send(LoopEvent::Error(message.clone())).await;
+                                }
+                            }
                         }
                         Err(e) => {
-                            let error_output: serde_json::Value = serde_json::json!({ "error": e.to_string() });
-                            let _ = tx.send(LoopEvent::ToolEnd {
-                                name: name.clone(),
-                                output: error_output.clone(),
-                            }).await;
-                            error_output
+                            tracing::error!("[AgentLoop] Chunk error: {}", e);
+                            let _ = tx.send(LoopEvent::Error(e.to_string())).await;
                         }
                     }
-                } else {
-                    let error_output: serde_json::Value = serde_json::json!({ "error": format!("Unknown tool: {}", name) });
-                    let _ = tx.send(LoopEvent::ToolEnd {
-                        name: name.clone(),
-                        output: error_output.clone(),
-                    }).await;
-                    error_output
-                };
+                }
+                tracing::debug!("[AgentLoop] Stream ended, pending_tool_calls count: {}", pending_tool_calls.len());
 
-                full_response.push_str(&format!("\n[工具 {} 结果]: {}", name, serde_json::to_string(&result).unwrap_or_default()));
+                // If no tool calls, we have the final response
+                if pending_tool_calls.is_empty() {
+                    tracing::debug!("[AgentLoop] No tool calls, returning final response");
+                    // Save final assistant message
+                    let _ = memory.append_message(&session_id_clone, &Message::assistant(&iteration_text)).await;
+
+                    let _ = tx.send(LoopEvent::Complete(AgentLoopResult {
+                        response: iteration_text,
+                        input_tokens: total_input_tokens,
+                        output_tokens: total_output_tokens,
+                        iterations: iteration,
+                    })).await;
+                    break 'outer;
+                }
+
+                tracing::debug!("[AgentLoop] Processing {} tool calls", pending_tool_calls.len());
+
+                // There are tool calls - add to message history
+                for (id, name, input) in &pending_tool_calls {
+                    tracing::debug!("[AgentLoop] Adding tool_use to history: id={}, name={}, input={:?}", id, name, input);
+                    messages.push(Message::tool_use(id, zclaw_types::ToolId::new(name), input.clone()));
+                }
+
+                // Execute tools
+                for (id, name, input) in pending_tool_calls {
+                    tracing::debug!("[AgentLoop] Executing tool: name={}, input={:?}", name, input);
+                    let tool_context = ToolContext {
+                        agent_id: agent_id.clone(),
+                        working_directory: None,
+                        session_id: Some(session_id_clone.to_string()),
+                        skill_executor: skill_executor.clone(),
+                    };
+
+                    let (result, is_error) = if let Some(tool) = tools.get(&name) {
+                        tracing::debug!("[AgentLoop] Tool '{}' found, executing...", name);
+                        match tool.execute(input.clone(), &tool_context).await {
+                            Ok(output) => {
+                                tracing::debug!("[AgentLoop] Tool '{}' executed successfully: {:?}", name, output);
+                                let _ = tx.send(LoopEvent::ToolEnd { name: name.clone(), output: output.clone() }).await;
+                                (output, false)
+                            }
+                            Err(e) => {
+                                tracing::error!("[AgentLoop] Tool '{}' execution failed: {}", name, e);
+                                let error_output = serde_json::json!({ "error": e.to_string() });
+                                let _ = tx.send(LoopEvent::ToolEnd { name: name.clone(), output: error_output.clone() }).await;
+                                (error_output, true)
+                            }
+                        }
+                    } else {
+                        tracing::error!("[AgentLoop] Tool '{}' not found in registry", name);
+                        let error_output = serde_json::json!({ "error": format!("Unknown tool: {}", name) });
+                        let _ = tx.send(LoopEvent::ToolEnd { name: name.clone(), output: error_output.clone() }).await;
+                        (error_output, true)
+                    };
+
+                    // Add tool result to message history
+                    tracing::debug!("[AgentLoop] Adding tool_result to history: id={}, name={}, is_error={}", id, name, is_error);
+                    messages.push(Message::tool_result(
+                        id,
+                        zclaw_types::ToolId::new(&name),
+                        result,
+                        is_error,
+                    ));
+                }
+
+                tracing::debug!("[AgentLoop] Continuing to next iteration for LLM to process tool results");
+                // Continue loop - next iteration will call LLM with tool results
             }
-
-            // Save assistant message to memory
-            let assistant_message = Message::assistant(full_response.clone());
-            let _ = memory.append_message(&session_id_clone, &assistant_message).await;
-
-            // Send completion event
-            let _ = tx.send(LoopEvent::Complete(AgentLoopResult {
-                response: full_response,
-                input_tokens,
-                output_tokens,
-                iterations: 1,
-            })).await;
         });
 
         Ok(rx)
@@ -327,9 +401,16 @@ pub struct AgentLoopResult {
 /// Events emitted during streaming
 #[derive(Debug, Clone)]
 pub enum LoopEvent {
+    /// Text delta from LLM
     Delta(String),
+    /// Tool execution started
     ToolStart { name: String, input: serde_json::Value },
+    /// Tool execution completed
     ToolEnd { name: String, output: serde_json::Value },
+    /// New iteration started (multi-turn tool calling)
+    IterationStart { iteration: usize, max_iterations: usize },
+    /// Loop completed with final result
     Complete(AgentLoopResult),
+    /// Error occurred
     Error(String),
 }