src/config/mod.rs

@@ -100,63 +100,15 @@ impl Default for SkillsConfig {
     }
 }
 
-#[derive(Debug, Clone, Default, Deserialize, Serialize)]
+#[derive(Debug, Clone, Deserialize, Serialize)]
 pub struct ToolsConfig {
     #[serde(default)]
     pub disabled: Vec<String>,
-    #[serde(default)]
-    pub task: TaskConfig,
 }
 
-#[derive(Debug, Clone, Deserialize, Serialize)]
-pub struct TaskConfig {
-    #[serde(default = "default_task_enabled")]
-    pub enabled: bool,
-    #[serde(default = "default_task_max_execution_secs")]
-    pub max_execution_secs: u64,
-    #[serde(default = "default_task_ttl_hours")]
-    pub ttl_hours: u64,
-    #[serde(default = "default_task_allowed_tools")]
-    pub allowed_tools: Vec<String>,
-}
-
-fn default_task_enabled() -> bool {
-    true
-}
-
-fn default_task_max_execution_secs() -> u64 {
-    300
-}
-
-fn default_task_ttl_hours() -> u64 {
-    24
-}
-
-fn default_task_allowed_tools() -> Vec<String> {
-    vec![
-        "file_read".to_string(),
-        "file_edit".to_string(),
-        "file_write".to_string(),
-        "bash".to_string(),
-        "http_request".to_string(),
-        "web_fetch".to_string(),
-        "memory_search".to_string(),
-        "get_time".to_string(),
-        "calculator".to_string(),
-        "skill_activate".to_string(),
-        "skill_list".to_string(),
-        "send_session_message".to_string(),
-    ]
-}
-
-impl Default for TaskConfig {
+impl Default for ToolsConfig {
     fn default() -> Self {
-        Self {
-            enabled: default_task_enabled(),
-            max_execution_secs: default_task_max_execution_secs(),
-            ttl_hours: default_task_ttl_hours(),
-            allowed_tools: default_task_allowed_tools(),
-        }
+        Self { disabled: Vec::new() }
     }
 }
 

src/gateway/agent_factory.rs

@@ -71,7 +71,6 @@ impl AgentFactory {
                 session_id: Some(session_id),
                 message_id: request.message_id.map(str::to_string),
                 message_seq: None,
-                subagent_description: None,
             })
         })
     }

src/gateway/mod.rs

@@ -81,7 +81,6 @@ impl GatewayState {
             skills,
             Arc::new(BusSessionMessageSender::new(bus.clone())),
             std::collections::HashSet::new(),
-            config.tools.task.clone(),
             chat_history_ttl_hours,
             session_ttl_hours,
         )?;

src/gateway/runtime.rs

@@ -2,17 +2,14 @@ use std::collections::{HashMap, HashSet};
 use std::sync::Arc;
 
 use crate::agent::AgentError;
-use crate::config::{LLMProviderConfig, TaskConfig};
+use crate::config::LLMProviderConfig;
 use crate::gateway::tool_registry_factory::ToolRegistryFactory;
 use crate::skills::SkillRuntime;
 use crate::storage::{
     ConversationRepository, MemoryRepository, PromptInjectionRepository, SchedulerJobRepository,
     SessionStore, SkillEventRepository,
 };
-use crate::tools::{
-    DefaultSubAgentRuntime, InMemoryTaskRepository, NoopSessionMessageSender,
-    SessionMessageSender, SubAgentRuntime, SubAgentRuntimeConfig, ToolRegistry,
-};
+use crate::tools::{NoopSessionMessageSender, SessionMessageSender, ToolRegistry};
 
 use super::agent_factory::AgentFactory;
 use super::cli_session::CliSessionService;
@@ -32,7 +29,6 @@ pub(crate) fn build_session_manager(
     provider_configs: HashMap<String, LLMProviderConfig>,
     skills: Arc<SkillRuntime>,
     disabled_tools: HashSet<String>,
-    task_config: TaskConfig,
     chat_history_ttl_hours: Option<u64>,
     session_ttl_hours: Option<u64>,
 ) -> Result<SessionManager, AgentError> {
@@ -45,7 +41,6 @@ pub(crate) fn build_session_manager(
         skills,
         Arc::new(NoopSessionMessageSender),
         disabled_tools,
-        task_config,
         chat_history_ttl_hours,
         session_ttl_hours,
     )
@@ -60,7 +55,6 @@ pub(crate) fn build_session_manager_with_sender(
     skills: Arc<SkillRuntime>,
     session_message_sender: Arc<dyn SessionMessageSender>,
     disabled_tools: HashSet<String>,
-    task_config: TaskConfig,
     chat_history_ttl_hours: Option<u64>,
     session_ttl_hours: Option<u64>,
 ) -> Result<SessionManager, AgentError> {
@@ -80,49 +74,20 @@ pub(crate) fn build_session_manager_with_sender(
     let memories: Arc<dyn MemoryRepository> = store.clone();
     let scheduler_jobs: Arc<dyn SchedulerJobRepository> = store.clone();
     let skill_events: Arc<dyn SkillEventRepository> = store.clone();
-    let conversations: Arc<dyn ConversationRepository> = store.clone();
-
-    // 创建 ToolRegistryFactory
-    let factory = ToolRegistryFactory::new(
+    let tools = Arc::new(
+        ToolRegistryFactory::new(
             skills.clone(),
             memories,
             scheduler_jobs,
             skill_events.clone(),
-        session_message_sender.clone(),
-        conversations.clone(),
+            session_message_sender,
             known_agents,
             default_timezone,
             disabled_tools,
-        task_config.clone(),
+        )
+        .build(),
     );
 
-    // 创建 SubAgentRuntime（如果 task 工具启用）
-    let factory = if task_config.enabled {
-        let task_repository = Arc::new(InMemoryTaskRepository::new());
-        let subagent_tools = Arc::new(factory.build_subagent_tools());
-
-        let runtime_config = SubAgentRuntimeConfig {
-            allowed_tools: task_config.allowed_tools.iter().cloned().collect(),
-            max_execution_secs: task_config.max_execution_secs,
-            explore_max_tool_calls: 20,
-            ttl_hours: task_config.ttl_hours,
-        };
-
-        let subagent_runtime = Arc::new(DefaultSubAgentRuntime::new(
-            runtime_config,
-            task_repository,
-            conversations.clone(),
-            subagent_tools,
-            provider_config.clone(),
-        ));
-
-        factory.with_subagent_runtime(subagent_runtime)
-    } else {
-        factory
-    };
-
-    let tools = Arc::new(factory.build());
-
     let prompt_repository: Arc<dyn PromptInjectionRepository> = store.clone();
     let agent_factory = AgentFactory::new(
         tools.clone(),
@@ -130,6 +95,7 @@ pub(crate) fn build_session_manager_with_sender(
         agent_prompt_reinject_every as usize,
         prompt_repository.clone(),
     );
+    let conversations: Arc<dyn ConversationRepository> = store.clone();
     let session_factory = SessionFactory::new(
         provider_config.clone(),
         skills.clone(),

src/gateway/session.rs

@@ -485,7 +485,6 @@ impl SessionManager {
         provider_configs: HashMap<String, LLMProviderConfig>,
         skills: Arc<SkillRuntime>,
         disabled_tools: std::collections::HashSet<String>,
-        task_config: crate::config::TaskConfig,
         chat_history_ttl_hours: Option<u64>,
         session_ttl_hours: Option<u64>,
     ) -> Result<Self, AgentError> {
@@ -497,7 +496,6 @@ impl SessionManager {
             provider_configs,
             skills,
             disabled_tools,
-            task_config,
             chat_history_ttl_hours,
             session_ttl_hours,
         )

src/gateway/tool_registry_factory.rs

@@ -1,15 +1,13 @@
 use std::collections::HashSet;
 use std::sync::Arc;
 
-use crate::config::TaskConfig;
 use crate::skills::SkillRuntime;
-use crate::storage::{ConversationRepository, MemoryRepository, SchedulerJobRepository, SkillEventRepository};
+use crate::storage::{MemoryRepository, SchedulerJobRepository, SkillEventRepository};
 use crate::tools::{
-    BashTool, CalculatorTool, FileEditTool, FileReadTool, FileWriteTool,
-    HttpRequestTool, MemoryManageTool, MemorySearchTool,
-    SchedulerManageTool, SessionMessageSender, SessionSendTool, SkillActivateTool, SkillListTool,
-    SkillManageTool, SubAgentRuntime, TaskTool, TimeTool,
-    ToolRegistry, WebFetchTool,
+    BashTool, CalculatorTool, FileEditTool, FileReadTool, FileWriteTool, HttpRequestTool,
+    MemoryManageTool, MemorySearchTool, SchedulerManageTool, SessionMessageSender,
+    SessionSendTool, SkillActivateTool, SkillListTool, SkillManageTool, TimeTool, ToolRegistry,
+    WebFetchTool,
 };
 
 pub(crate) struct ToolRegistryFactory {
@@ -18,12 +16,9 @@ pub(crate) struct ToolRegistryFactory {
     scheduler_jobs: Arc<dyn SchedulerJobRepository>,
     skill_events: Arc<dyn SkillEventRepository>,
     session_message_sender: Arc<dyn SessionMessageSender>,
-    conversations: Arc<dyn ConversationRepository>,
     known_agents: HashSet<String>,
     default_timezone: String,
     disabled_tools: HashSet<String>,
-    task_config: TaskConfig,
-    subagent_runtime: Option<Arc<dyn SubAgentRuntime>>,
 }
 
 impl ToolRegistryFactory {
@@ -33,11 +28,9 @@ impl ToolRegistryFactory {
         scheduler_jobs: Arc<dyn SchedulerJobRepository>,
         skill_events: Arc<dyn SkillEventRepository>,
         session_message_sender: Arc<dyn SessionMessageSender>,
-        conversations: Arc<dyn ConversationRepository>,
         known_agents: HashSet<String>,
         default_timezone: String,
         disabled_tools: HashSet<String>,
-        task_config: TaskConfig,
     ) -> Self {
         Self {
             skills,
@@ -45,23 +38,12 @@ impl ToolRegistryFactory {
             scheduler_jobs,
             skill_events,
             session_message_sender,
-            conversations,
             known_agents,
             default_timezone,
             disabled_tools,
-            task_config,
-            subagent_runtime: None,
         }
     }
 
-    pub(crate) fn with_subagent_runtime(
-        mut self,
-        runtime: Arc<dyn SubAgentRuntime>,
-    ) -> Self {
-        self.subagent_runtime = Some(runtime);
-        self
-    }
-
     fn is_enabled(&self, tool_name: &str) -> bool {
         !self.disabled_tools.contains(tool_name)
     }
@@ -126,74 +108,6 @@ impl ToolRegistryFactory {
             registry.register(WebFetchTool::new(50_000, 30));
         }
 
-        // 注册 Task 工具（如果启用且有 subagent_runtime）
-        if self.is_enabled("task") && self.task_config.enabled {
-            if let Some(runtime) = &self.subagent_runtime {
-                registry.register(TaskTool::new(runtime.clone()));
-            }
-        }
-
-        registry
-    }
-
-    /// 构建子代理专用工具集（不包含 task 工具防止递归）
-    pub(crate) fn build_subagent_tools(&self) -> ToolRegistry {
-        let mut registry = ToolRegistry::new();
-
-        // 基础工具
-        if self.is_enabled("calculator") {
-            registry.register(CalculatorTool::new());
-        }
-        if self.is_enabled("get_time") {
-            registry.register(TimeTool::new(self.default_timezone.clone()));
-        }
-        if self.is_enabled("file_read") {
-            registry.register(FileReadTool::new());
-        }
-        if self.is_enabled("file_write") {
-            registry.register(FileWriteTool::new());
-        }
-        if self.is_enabled("file_edit") {
-            registry.register(FileEditTool::new());
-        }
-        if self.is_enabled("bash") {
-            registry.register(BashTool::new());
-        }
-        if self.is_enabled("http_request") {
-            registry.register(HttpRequestTool::new(
-                vec!["*".to_string()],
-                1_000_000,
-                30,
-                false,
-            ));
-        }
-        if self.is_enabled("web_fetch") {
-            registry.register(WebFetchTool::new(50_000, 30));
-        }
-
-        // 记忆工具（只读）
-        if self.is_enabled("memory_search") {
-            registry.register(MemorySearchTool::new(self.memories.clone()));
-        }
-
-        // Skill 工具
-        if self.is_enabled("skill_activate") {
-            registry.register(SkillActivateTool::new(
-                self.skills.clone(),
-                self.skill_events.clone(),
-            ));
-        }
-        if self.is_enabled("skill_list") {
-            registry.register(SkillListTool::new(self.skills.clone()));
-        }
-
-        // 进度通知工具
-        if self.is_enabled("session_send") {
-            registry.register(SessionSendTool::new(self.session_message_sender.clone()));
-        }
-
-        // 注意：不注册 task 工具，防止递归创建子代理
-
         registry
     }
 }

src/tools/mod.rs

@@ -12,7 +12,6 @@ pub mod session_send;
 pub mod schema;
 pub mod skill_activate;
 pub mod skill_manage;
-pub mod task;
 pub mod time;
 pub mod traits;
 pub mod web_fetch;
@@ -34,10 +33,6 @@ pub use session_send::{
 pub use schema::{CleaningStrategy, SchemaCleanr};
 pub use skill_activate::SkillActivateTool;
 pub use skill_manage::{SkillListTool, SkillManageTool};
-pub use task::{
-    DefaultSubAgentRuntime, InMemoryTaskRepository, SubAgentRuntime, SubAgentRuntimeConfig,
-    TaskError, TaskRepository, TaskTool,
-};
 pub use time::TimeTool;
 pub use traits::{Tool, ToolContext, ToolResult};
 pub use web_fetch::WebFetchTool;

src/tools/task/error.rs

@@ -1,48 +0,0 @@
-use crate::storage::StorageError;
-
-/// 任务错误类型
-#[derive(Debug, thiserror::Error)]
-pub enum TaskError {
-    #[error("Task session not found: {0}")]
-    SessionNotFound(String),
-
-    #[error("Invalid parent session")]
-    InvalidParentSession,
-
-    #[error("Failed to create subagent: {0}")]
-    AgentCreationFailed(String),
-
-    #[error("Execution failed: {0}")]
-    ExecutionFailed(String),
-
-    #[error("Task execution timed out")]
-    Timeout,
-
-    #[error("Repository error: {0}")]
-    RepositoryError(#[from] StorageError),
-
-    #[error("Serialization error: {0}")]
-    SerializationError(#[from] serde_json::Error),
-
-    #[error("Missing required context: {0}")]
-    MissingContext(String),
-
-    #[error("Invalid arguments: {0}")]
-    InvalidArguments(String),
-}
-
-impl TaskError {
-    pub fn as_status(&self) -> &'static str {
-        match self {
-            Self::Timeout => "timeout",
-            Self::SessionNotFound(_) => "failed",
-            Self::InvalidParentSession => "failed",
-            Self::AgentCreationFailed(_) => "failed",
-            Self::ExecutionFailed(_) => "failed",
-            Self::RepositoryError(_) => "failed",
-            Self::SerializationError(_) => "failed",
-            Self::MissingContext(_) => "failed",
-            Self::InvalidArguments(_) => "failed",
-        }
-    }
-}

src/tools/task/mod.rs

@@ -1,13 +0,0 @@
-pub mod error;
-pub mod prompt;
-pub mod repository;
-pub mod runtime;
-pub mod tool;
-pub mod types;
-
-pub use error::TaskError;
-pub use prompt::SubagentPromptBuilder;
-pub use repository::{InMemoryTaskRepository, TaskRepository};
-pub use runtime::{DefaultSubAgentRuntime, SubAgentRuntime, SubAgentRuntimeConfig, StaticSystemPromptProvider};
-pub use tool::TaskTool;
-pub use types::{SubagentType, TaskDefinition, TaskHandle, TaskSession, TaskSessionState, TaskToolArgs, TaskToolResult};

src/tools/task/prompt.rs

@@ -1,80 +0,0 @@
-use super::types::SubagentType;
-
-/// 子代理系统提示词构建器
-pub struct SubagentPromptBuilder;
-
-impl SubagentPromptBuilder {
-    /// 构建子代理系统提示词
-    pub fn build(
-        subagent_type: SubagentType,
-        description: &str,
-        _prompt: &str,
-    ) -> String {
-        match subagent_type {
-            SubagentType::General => Self::build_general_prompt(description),
-            SubagentType::Explore => Self::build_explore_prompt(description),
-        }
-    }
-
-    /// 构建恢复任务的提示词
-    pub fn build_resume_prompt(session_description: &str, additional_prompt: &str) -> String {
-        format!(
-            "你正在继续执行一个之前创建的子代理任务。\n\n\
-            任务描述: {}\n\n\
-            继续执行指令: {}\n\n\
-            你应该:\n\
-            1. 回顾之前的工作进度（如果已有历史）\n\
-            2. 继续完成任务，不要偏离目标\n\
-            3. 完成后给出简洁的总结\n\
-            4. 不要尝试创建新的子代理任务\n\n\
-            注意: 你在一个独立的执行上下文中，没有访问主对话历史的权限。",
-            session_description, additional_prompt
-        )
-    }
-
-    fn build_general_prompt(description: &str) -> String {
-        format!(
-            "你是一个专注的子代理，正在执行一个独立任务。\n\n\
-            任务描述: {}\n\n\
-            你应该:\n\
-            1. 专注于完成任务，不要偏离目标\n\
-            2. 使用可用的工具进行必要操作\n\
-            3. 完成后给出简洁的总结\n\
-            4. 不要尝试创建新的子代理任务\n\n\
-            注意: 你没有访问主对话历史的权限，这是一个独立的执行上下文。",
-            description
-        )
-    }
-
-    fn build_explore_prompt(description: &str) -> String {
-        format!(
-            "你是一个只读探索代理，用于代码库探索和信息收集。\n\n\
-            任务描述: {}\n\n\
-            你应该:\n\
-            1. 只使用只读工具进行探索\n\
-            2. 专注于理解和收集信息\n\
-            3. 不要进行任何写操作\n\
-            4. 给出简洁的发现总结\n\n\
-            注意: 你是一个只读代理，禁止执行任何修改操作。",
-            description
-        )
-    }
-}
-
-/// 从子代理输出提取简洁摘要
-pub fn extract_summary(content: &str) -> String {
-    // 取第一段或前 500 字符
-    let first_paragraph = content
-        .lines()
-        .take_while(|line| !line.trim().is_empty())
-        .collect::<Vec<_>>()
-        .join("\n");
-
-    if first_paragraph.len() > 500 {
-        first_paragraph.chars().take(500).collect()
-    } else if first_paragraph.is_empty() {
-        content.chars().take(200).collect()
-    } else {
-        first_paragraph
-    }
-}

src/tools/task/repository.rs

@@ -1,98 +0,0 @@
-use std::collections::HashMap;
-use std::sync::RwLock;
-
-use async_trait::async_trait;
-
-use crate::storage::StorageError;
-
-use super::types::TaskSession;
-
-/// 任务持久化接口
-#[async_trait]
-pub trait TaskRepository: Send + Sync + 'static {
-    /// 保存任务会话
-    async fn save_task_session(&self, session: &TaskSession) -> Result<(), StorageError>;
-
-    /// 加载任务会话
-    async fn load_task_session(&self, task_id: &str) -> Result<Option<TaskSession>, StorageError>;
-
-    /// 删除任务会话
-    async fn delete_task_session(&self, task_id: &str) -> Result<bool, StorageError>;
-
-    /// 列出父会话的所有任务
-    async fn list_tasks_for_session(
-        &self,
-        parent_session_id: &str,
-    ) -> Result<Vec<TaskSession>, StorageError>;
-
-    /// 清理过期任务（超过指定小时）
-    async fn cleanup_expired_tasks(&self, ttl_hours: u64) -> Result<usize, StorageError>;
-}
-
-/// 内存实现（用于测试）
-pub struct InMemoryTaskRepository {
-    sessions: RwLock<HashMap<String, TaskSession>>,
-}
-
-impl InMemoryTaskRepository {
-    pub fn new() -> Self {
-        Self {
-            sessions: RwLock::new(HashMap::new()),
-        }
-    }
-}
-
-impl Default for InMemoryTaskRepository {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
-#[async_trait]
-impl TaskRepository for InMemoryTaskRepository {
-    async fn save_task_session(&self, session: &TaskSession) -> Result<(), StorageError> {
-        self.sessions
-            .write()
-            .unwrap()
-            .insert(session.id.clone(), session.clone());
-        Ok(())
-    }
-
-    async fn load_task_session(&self, task_id: &str) -> Result<Option<TaskSession>, StorageError> {
-        Ok(self.sessions.read().unwrap().get(task_id).cloned())
-    }
-
-    async fn delete_task_session(&self, task_id: &str) -> Result<bool, StorageError> {
-        Ok(self.sessions.write().unwrap().remove(task_id).is_some())
-    }
-
-    async fn list_tasks_for_session(
-        &self,
-        parent_session_id: &str,
-    ) -> Result<Vec<TaskSession>, StorageError> {
-        Ok(self
-            .sessions
-            .read()
-            .unwrap()
-            .values()
-            .filter(|s| s.parent_session_id == parent_session_id)
-            .cloned()
-            .collect())
-    }
-
-    async fn cleanup_expired_tasks(&self, ttl_hours: u64) -> Result<usize, StorageError> {
-        let now = current_timestamp();
-        let ttl_millis = ttl_hours * 3600 * 1000;
-        let mut sessions = self.sessions.write().unwrap();
-        let before = sessions.len();
-        sessions.retain(|_, s| now - s.updated_at < ttl_millis as i64);
-        Ok(before - sessions.len())
-    }
-}
-
-fn current_timestamp() -> i64 {
-    std::time::SystemTime::now()
-        .duration_since(std::time::UNIX_EPOCH)
-        .expect("system clock before unix epoch")
-        .as_millis() as i64
-}

src/tools/task/runtime.rs

@@ -1,378 +0,0 @@
-use std::collections::HashSet;
-use std::sync::Arc;
-use std::time::Duration;
-
-use async_trait::async_trait;
-
-use crate::agent::{AgentLoop, AgentRuntimeConfig, SystemPrompt, SystemPromptContext, SystemPromptProvider};
-use crate::bus::ChatMessage;
-use crate::config::LLMProviderConfig;
-use crate::storage::ConversationRepository;
-use crate::tools::{ToolContext, ToolRegistry};
-
-use super::error::TaskError;
-use super::prompt::{extract_summary, SubagentPromptBuilder};
-use super::repository::TaskRepository;
-use super::types::{SubagentType, TaskDefinition, TaskHandle, TaskSession, TaskSessionState, TaskToolResult};
-
-/// 子代理运行时配置
-#[derive(Debug, Clone)]
-pub struct SubAgentRuntimeConfig {
-    /// 子代理可用的工具列表（白名单）
-    pub allowed_tools: HashSet<String>,
-    /// 最大执行时间（秒）
-    pub max_execution_secs: u64,
-    /// 探索类型的最大工具调用次数
-    pub explore_max_tool_calls: usize,
-    /// 任务 TTL（小时）
-    pub ttl_hours: u64,
-}
-
-impl Default for SubAgentRuntimeConfig {
-    fn default() -> Self {
-        Self {
-            allowed_tools: HashSet::from([
-                "file_read".to_string(),
-                "file_edit".to_string(),
-                "file_write".to_string(),
-                "bash".to_string(),
-                "http_request".to_string(),
-                "web_fetch".to_string(),
-                "memory_search".to_string(),
-                "get_time".to_string(),
-                "calculator".to_string(),
-                "skill_activate".to_string(),
-                "skill_list".to_string(),
-                "send_session_message".to_string(),  // 用于进度通知
-            ]),
-            max_execution_secs: 300, // 5分钟
-            explore_max_tool_calls: 20,
-            ttl_hours: 24,
-        }
-    }
-}
-
-/// 子代理运行时抽象接口
-#[async_trait]
-pub trait SubAgentRuntime: Send + Sync + 'static {
-    /// 创建并执行子代理任务
-    async fn spawn(
-        &self,
-        parent_context: &ToolContext,
-        task: TaskDefinition,
-    ) -> Result<TaskToolResult, TaskError>;
-
-    /// 恢复现有任务
-    async fn resume(
-        &self,
-        task_id: &str,
-        parent_context: &ToolContext,
-        additional_prompt: String,
-    ) -> Result<TaskToolResult, TaskError>;
-
-    /// 发送消息给子代理（支持中断或补充指令）
-    async fn send_message(&self, task_id: &str, message: String) -> Result<(), TaskError>;
-
-    /// 清理过期任务
-    async fn cleanup_expired(&self) -> Result<usize, TaskError>;
-}
-
-/// 静态系统提示词提供者（用于子代理）
-pub struct StaticSystemPromptProvider {
-    prompt: String,
-}
-
-impl StaticSystemPromptProvider {
-    pub fn new(prompt: String) -> Self {
-        Self { prompt }
-    }
-}
-
-impl SystemPromptProvider for StaticSystemPromptProvider {
-    fn build(&self, _context: &SystemPromptContext) -> Option<SystemPrompt> {
-        Some(SystemPrompt {
-            content: self.prompt.clone(),
-            context: Some("subagent".to_string()),
-        })
-    }
-}
-
-/// 默认子代理运行时实现
-pub struct DefaultSubAgentRuntime {
-    config: SubAgentRuntimeConfig,
-    task_repository: Arc<dyn TaskRepository>,
-    conversation_repository: Arc<dyn ConversationRepository>,
-    subagent_tools: Arc<ToolRegistry>,
-    provider_config: LLMProviderConfig,
-}
-
-impl DefaultSubAgentRuntime {
-    pub fn new(
-        config: SubAgentRuntimeConfig,
-        task_repository: Arc<dyn TaskRepository>,
-        conversation_repository: Arc<dyn ConversationRepository>,
-        subagent_tools: Arc<ToolRegistry>,
-        provider_config: LLMProviderConfig,
-    ) -> Self {
-        Self {
-            config,
-            task_repository,
-            conversation_repository,
-            subagent_tools,
-            provider_config,
-        }
-    }
-
-    /// 创建子代理实例
-    fn create_subagent(
-        &self,
-        session: &TaskSession,
-        system_prompt: String,
-    ) -> Result<AgentLoop, TaskError> {
-        let prompt_provider = Arc::new(StaticSystemPromptProvider::new(system_prompt));
-
-        AgentLoop::with_tools_and_system_prompt_provider(
-            AgentRuntimeConfig::from(self.provider_config.clone()),
-            self.subagent_tools.clone(),
-            prompt_provider,
-            None, // 子代理不需要 skill provider
-        )
-        .map(|agent| {
-            agent.with_tool_context(ToolContext {
-                channel_name: Some(session.parent_channel_name.clone()),
-                sender_id: None,
-                chat_id: Some(session.parent_chat_id.clone()), // 使用父会话 chat_id
-                session_id: Some(session.session_id.clone()),   // 子代理自己的 session_id
-                message_id: None,
-                message_seq: None,
-                subagent_description: Some(session.description.clone()),
-            })
-        })
-        .map_err(|e| TaskError::AgentCreationFailed(e.to_string()))
-    }
-
-    /// 执行任务（带超时控制）
-    async fn execute_task(
-        &self,
-        agent: AgentLoop,
-        session: &TaskSession,
-        prompt: String,
-    ) -> Result<TaskToolResult, TaskError> {
-        // 构建初始消息
-        let history = vec![ChatMessage::user(prompt)];
-        let system_prompt_context = SystemPromptContext {
-            session_id: Some(session.session_id.clone()),
-            chat_id: session.session_id.clone(),
-            user_message_count: 1,
-        };
-
-        // 设置超时
-        let max_secs = if session.subagent_type == SubagentType::Explore {
-            self.config.max_execution_secs / 2  // Explore 类型时间更短
-        } else {
-            self.config.max_execution_secs
-        };
-        let timeout_duration = Duration::from_secs(max_secs);
-
-        let result = tokio::time::timeout(
-            timeout_duration,
-            agent.process(history, Some(&system_prompt_context)),
-        )
-        .await;
-
-        match result {
-            Ok(Ok(process_result)) => {
-                let final_message = process_result.final_response;
-                Ok(TaskToolResult {
-                    status: "success".to_string(),
-                    summary: extract_summary(&final_message.content),
-                    output: final_message.content,
-                    task_id: session.id.clone(),
-                })
-            }
-            Ok(Err(e)) => Err(TaskError::ExecutionFailed(e.to_string())),
-            Err(_) => Err(TaskError::Timeout),
-        }
-    }
-
-    /// 使用历史继续执行
-    async fn execute_task_with_history(
-        &self,
-        agent: AgentLoop,
-        session: &TaskSession,
-        additional_prompt: String,
-    ) -> Result<TaskToolResult, TaskError> {
-        // 加载历史 + 新消息
-        let mut history = self
-            .conversation_repository
-            .load_messages(&session.session_id)
-            .map_err(TaskError::RepositoryError)?;
-        history.push(ChatMessage::user(additional_prompt));
-
-        let user_message_count = history.iter().filter(|m| m.role == "user").count();
-        let system_prompt_context = SystemPromptContext {
-            session_id: Some(session.session_id.clone()),
-            chat_id: session.session_id.clone(),
-            user_message_count,
-        };
-
-        let timeout_duration = Duration::from_secs(self.config.max_execution_secs);
-
-        let result = tokio::time::timeout(
-            timeout_duration,
-            agent.process(history, Some(&system_prompt_context)),
-        )
-        .await;
-
-        match result {
-            Ok(Ok(process_result)) => {
-                let final_message = process_result.final_response;
-                Ok(TaskToolResult {
-                    status: "success".to_string(),
-                    summary: extract_summary(&final_message.content),
-                    output: final_message.content,
-                    task_id: session.id.clone(),
-                })
-            }
-            Ok(Err(e)) => Err(TaskError::ExecutionFailed(e.to_string())),
-            Err(_) => Err(TaskError::Timeout),
-        }
-    }
-}
-
-#[async_trait]
-impl SubAgentRuntime for DefaultSubAgentRuntime {
-    async fn spawn(
-        &self,
-        parent_context: &ToolContext,
-        task: TaskDefinition,
-    ) -> Result<TaskToolResult, TaskError> {
-        // 1. 验证上下文
-        let session_id = parent_context
-            .session_id
-            .clone()
-            .ok_or_else(|| TaskError::MissingContext("session_id".to_string()))?;
-        let chat_id = parent_context
-            .chat_id
-            .clone()
-            .ok_or_else(|| TaskError::MissingContext("chat_id".to_string()))?;
-        let channel_name = parent_context
-            .channel_name
-            .clone()
-            .ok_or_else(|| TaskError::MissingContext("channel_name".to_string()))?;
-
-        // 2. 创建任务会话
-        let session = TaskSession::new(
-            session_id,
-            chat_id,
-            channel_name,
-            task.description.clone(),
-            task.subagent_type,
-        );
-
-        // 3. 保存会话
-        self.task_repository.save_task_session(&session).await?;
-
-        // 4. 构建子代理系统提示词
-        let system_prompt = SubagentPromptBuilder::build(
-            task.subagent_type,
-            &task.description,
-            &task.prompt,
-        );
-
-        // 5. 创建子代理
-        let agent = self.create_subagent(&session, system_prompt)?;
-
-        // 6. 执行任务
-        let result = self
-            .execute_task(agent, &session, task.prompt.clone())
-            .await;
-
-        // 7. 更新会话状态并保存
-        match result {
-            Ok(tool_result) => {
-                let mut session = session;
-                session.mark_completed(tool_result.summary.clone());
-                self.task_repository.save_task_session(&session).await?;
-                Ok(tool_result)
-            }
-            Err(e) => {
-                let mut session = session;
-                let status = e.as_status();
-                if status == "timeout" {
-                    session.mark_timeout();
-                } else {
-                    session.mark_failed(e.to_string());
-                }
-                self.task_repository.save_task_session(&session).await?;
-                Err(e)
-            }
-        }
-    }
-
-    async fn resume(
-        &self,
-        task_id: &str,
-        parent_context: &ToolContext,
-        additional_prompt: String,
-    ) -> Result<TaskToolResult, TaskError> {
-        // 1. 加载现有会话
-        let session = self
-            .task_repository
-            .load_task_session(task_id)
-            .await?
-            .ok_or_else(|| TaskError::SessionNotFound(task_id.to_string()))?;
-
-        // 2. 验证父会话匹配
-        let parent_session_id = parent_context
-            .session_id
-            .clone()
-            .ok_or_else(|| TaskError::MissingContext("session_id".to_string()))?;
-        if session.parent_session_id != parent_session_id {
-            return Err(TaskError::InvalidParentSession);
-        }
-
-        // 3. 构建恢复提示词
-        let system_prompt = SubagentPromptBuilder::build_resume_prompt(
-            &session.description,
-            &additional_prompt,
-        );
-
-        // 4. 创建子代理
-        let agent = self.create_subagent(&session, system_prompt)?;
-
-        // 5. 使用历史继续执行
-        let result = self
-            .execute_task_with_history(agent, &session, additional_prompt)
-            .await;
-
-        // 6. 更新会话状态
-        match result {
-            Ok(tool_result) => {
-                let mut session = session;
-                session.mark_completed(tool_result.summary.clone());
-                self.task_repository.save_task_session(&session).await?;
-                Ok(tool_result)
-            }
-            Err(e) => {
-                let mut session = session;
-                session.mark_failed(e.to_string());
-                self.task_repository.save_task_session(&session).await?;
-                Err(e)
-            }
-        }
-    }
-
-    async fn send_message(&self, _task_id: &str, _message: String) -> Result<(), TaskError> {
-        // TODO: 实现双向通信
-        // 需要在 TaskSession 中添加 pending_messages 队列
-        Err(TaskError::InvalidArguments("send_message not implemented yet".to_string()))
-    }
-
-    async fn cleanup_expired(&self) -> Result<usize, TaskError> {
-        self.task_repository
-            .cleanup_expired_tasks(self.config.ttl_hours)
-            .await
-            .map_err(TaskError::from)
-    }
-}

src/tools/task/tool.rs

@@ -1,153 +0,0 @@
-use async_trait::async_trait;
-use serde_json::json;
-use std::sync::Arc;
-
-use crate::tools::{Tool, ToolContext, ToolResult};
-
-use super::runtime::SubAgentRuntime;
-use super::types::{TaskDefinition, TaskToolArgs};
-
-/// Task 工具 - 创建和管理子代理
-pub struct TaskTool {
-    runtime: Arc<dyn SubAgentRuntime>,
-}
-
-impl TaskTool {
-    pub fn new(runtime: Arc<dyn SubAgentRuntime>) -> Self {
-        Self { runtime }
-    }
-}
-
-#[async_trait]
-impl Tool for TaskTool {
-    fn name(&self) -> &str {
-        "task"
-    }
-
-    fn description(&self) -> &str {
-        "Launch a specialized subagent to handle complex, multi-step tasks. \
-         Subagents run in isolated contexts and can work in parallel. \
-         Use 'general' type for complex tasks, 'explore' type for read-only exploration. \
-         You can resume a previous task by providing its task_id."
-    }
-
-    fn parameters_schema(&self) -> serde_json::Value {
-        json!({
-            "type": "object",
-            "properties": {
-                "description": {
-                    "type": "string",
-                    "description": "Short description (3-5 words) of what this task does",
-                    "maxLength": 50
-                },
-                "prompt": {
-                    "type": "string",
-                    "description": "Detailed instructions for the subagent to execute"
-                },
-                "subagent_type": {
-                    "type": "string",
-                    "enum": ["general", "explore"],
-                    "default": "general",
-                    "description": "Type of subagent: 'general' for complex multi-step tasks, 'explore' for read-only search/exploration"
-                },
-                "task_id": {
-                    "type": "string",
-                    "description": "Optional: Resume an existing task session by providing its task_id"
-                }
-            },
-            "required": ["description", "prompt"]
-        })
-    }
-
-    fn read_only(&self) -> bool {
-        false
-    }
-
-    fn exclusive(&self) -> bool {
-        // Task 工具创建子代理，不应与其他工具并发执行
-        true
-    }
-
-    async fn execute(&self, _args: serde_json::Value) -> anyhow::Result<ToolResult> {
-        // Task 工具必须通过 execute_with_context 获取父会话信息
-        Ok(ToolResult {
-            success: false,
-            output: String::new(),
-            error: Some(
-                "task tool requires tool context with session_id, chat_id, and channel_name"
-                    .to_string(),
-            ),
-        })
-    }
-
-    async fn execute_with_context(
-        &self,
-        context: &ToolContext,
-        args: serde_json::Value,
-    ) -> anyhow::Result<ToolResult> {
-        // 1. 解析参数
-        let task_args: TaskToolArgs = serde_json::from_value(args.clone())
-            .map_err(|e| anyhow::anyhow!("invalid task arguments: {}", e))?;
-
-        // 2. 验证描述长度
-        let word_count = task_args.description.split_whitespace().count();
-        if task_args.description.len() > 50 || word_count > 7 || word_count < 1 {
-            return Ok(ToolResult {
-                success: false,
-                output: String::new(),
-                error: Some(
-                    "description should be 1-5 words, max 50 characters".to_string(),
-                ),
-            });
-        }
-
-        // 3. 验证上下文
-        if context.session_id.is_none() {
-            return Ok(ToolResult {
-                success: false,
-                output: String::new(),
-                error: Some("task tool requires session_id in context".to_string()),
-            });
-        }
-        if context.chat_id.is_none() {
-            return Ok(ToolResult {
-                success: false,
-                output: String::new(),
-                error: Some("task tool requires chat_id in context".to_string()),
-            });
-        }
-        if context.channel_name.is_none() {
-            return Ok(ToolResult {
-                success: false,
-                output: String::new(),
-                error: Some("task tool requires channel_name in context".to_string()),
-            });
-        }
-
-        // 4. 执行任务
-        let result = if let Some(task_id) = task_args.task_id {
-            // 恢复现有任务
-            self.runtime
-                .resume(&task_id, context, task_args.prompt)
-                .await
-        } else {
-            // 创建新任务
-            let task_def = TaskDefinition::from(task_args);
-            self.runtime.spawn(context, task_def).await
-        };
-
-        // 5. 构建返回结果
-        match result {
-            Ok(task_result) => Ok(ToolResult {
-                success: true,
-                output: serde_json::to_string(&task_result)?,
-                error: None,
-            }),
-            Err(e) => Ok(ToolResult {
-                success: false,
-                output: String::new(),
-                error: Some(e.to_string()),
-            }),
-        }
-    }
-}

src/tools/task/types.rs

@@ -1,190 +0,0 @@
-use serde::{Deserialize, Serialize};
-
-/// 子代理会话状态
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
-#[serde(rename_all = "lowercase")]
-pub enum TaskSessionState {
-    /// 正在执行
-    Running,
-    /// 已完成
-    Completed,
-    /// 已失败
-    Failed,
-    /// 已超时
-    Timeout,
-}
-
-impl Default for TaskSessionState {
-    fn default() -> Self {
-        Self::Running
-    }
-}
-
-/// 子代理类型
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Default, Serialize, Deserialize)]
-#[serde(rename_all = "lowercase")]
-pub enum SubagentType {
-    /// 通用型 - 处理复杂多步骤任务
-    #[default]
-    General,
-    /// 探索型 - 只读搜索代理
-    Explore,
-}
-
-impl SubagentType {
-    pub fn as_str(&self) -> &'static str {
-        match self {
-            Self::General => "general",
-            Self::Explore => "explore",
-        }
-    }
-
-    pub fn from_str(s: &str) -> Option<Self> {
-        match s {
-            "general" => Some(Self::General),
-            "explore" => Some(Self::Explore),
-            _ => None,
-        }
-    }
-}
-
-/// 任务会话记录
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct TaskSession {
-    /// 任务唯一 ID (UUID)
-    pub id: String,
-    /// 子代理独立的 session_id（存储在 message 表）
-    pub session_id: String,
-    /// 父会话 ID (用于关联)
-    pub parent_session_id: String,
-    /// 父 chat_id
-    pub parent_chat_id: String,
-    /// 父 channel_name
-    pub parent_channel_name: String,
-    /// 任务描述
-    pub description: String,
-    /// 子代理类型
-    pub subagent_type: SubagentType,
-    /// 当前状态
-    pub state: TaskSessionState,
-    /// 创建时间
-    pub created_at: i64,
-    /// 最后更新时间
-    pub updated_at: i64,
-    /// 执行摘要
-    pub summary: Option<String>,
-    /// 错误信息
-    pub error: Option<String>,
-}
-
-impl TaskSession {
-    pub fn new(
-        parent_session_id: String,
-        parent_chat_id: String,
-        parent_channel_name: String,
-        description: String,
-        subagent_type: SubagentType,
-    ) -> Self {
-        let id = format!("task:{}", uuid::Uuid::new_v4());
-        let session_id = format!("sub:{}:{}", parent_session_id, id);
-        let now = current_timestamp();
-        Self {
-            id,
-            session_id,
-            parent_session_id,
-            parent_chat_id,
-            parent_channel_name,
-            description,
-            subagent_type,
-            state: TaskSessionState::Running,
-            created_at: now,
-            updated_at: now,
-            summary: None,
-            error: None,
-        }
-    }
-
-    /// 标记完成
-    pub fn mark_completed(&mut self, summary: String) {
-        self.state = TaskSessionState::Completed;
-        self.summary = Some(summary);
-        self.updated_at = current_timestamp();
-    }
-
-    /// 标记失败
-    pub fn mark_failed(&mut self, error: String) {
-        self.state = TaskSessionState::Failed;
-        self.error = Some(error);
-        self.updated_at = current_timestamp();
-    }
-
-    /// 标记超时
-    pub fn mark_timeout(&mut self) {
-        self.state = TaskSessionState::Timeout;
-        self.error = Some("Task execution timed out".to_string());
-        self.updated_at = current_timestamp();
-    }
-}
-
-/// 任务工具参数
-#[derive(Debug, Clone, Deserialize)]
-pub struct TaskToolArgs {
-    /// 简短描述（3-5词）
-    pub description: String,
-    /// 详细指令
-    pub prompt: String,
-    /// 子代理类型
-    #[serde(default)]
-    pub subagent_type: SubagentType,
-    /// 恢复现有会话的 task_id
-    #[serde(default)]
-    pub task_id: Option<String>,
-}
-
-/// 任务定义（用于 SubAgentRuntime::spawn）
-#[derive(Debug, Clone)]
-pub struct TaskDefinition {
-    pub description: String,
-    pub prompt: String,
-    pub subagent_type: SubagentType,
-    pub max_execution_secs: Option<u64>,
-}
-
-impl From<TaskToolArgs> for TaskDefinition {
-    fn from(args: TaskToolArgs) -> Self {
-        Self {
-            description: args.description,
-            prompt: args.prompt,
-            subagent_type: args.subagent_type,
-            max_execution_secs: None,
-        }
-    }
-}
-
-/// 任务句柄（运行中任务）
-#[derive(Debug, Clone)]
-pub struct TaskHandle {
-    pub task_id: String,
-    pub session_id: String,
-    pub status: TaskSessionState,
-}
-
-/// 任务执行结果
-#[derive(Debug, Clone, Serialize)]
-pub struct TaskToolResult {
-    /// 状态: success/failed/timeout
-    pub status: String,
-    /// 任务完成总结
-    pub summary: String,
-    /// 详细输出
-    pub output: String,
-    /// 会话 ID（用于恢复）
-    pub task_id: String,
-}
-
-fn current_timestamp() -> i64 {
-    std::time::SystemTime::now()
-        .duration_since(std::time::UNIX_EPOCH)
-        .expect("system clock before unix epoch")
-        .as_millis() as i64
-}

src/tools/traits.rs

@@ -15,8 +15,6 @@ pub struct ToolContext {
     pub session_id: Option<String>,
     pub message_id: Option<String>,
     pub message_seq: Option<i64>,
-    /// 子代理标识，用于标注消息来源
-    pub subagent_description: Option<String>,
 }
 
 #[async_trait]