Struct SubAgentSnapshot 

pub struct SubAgentSnapshot {
    pub id: String,
    pub description: String,
    pub mode: &'static str,
    pub is_running: Arc<AtomicBool>,
    pub system_prompt: Arc<Mutex<String>>,
    pub messages: Arc<Mutex<Vec<ChatMessage>>>,
    pub status: Arc<Mutex<SubAgentStatus>>,
    pub current_tool: Arc<Mutex<Option<String>>>,
    pub tool_calls_count: Arc<AtomicUsize>,
    pub current_round: Arc<AtomicUsize>,
    pub started_at: Instant,
}

一个正在运行（或刚结束）的子 Agent 的快照

Fields

id: String

description: String

mode: &'static str

is_running: Arc<AtomicBool>

system_prompt: Arc<Mutex<String>>

messages: Arc<Mutex<Vec<ChatMessage>>>

status: Arc<Mutex<SubAgentStatus>>

细粒度状态

current_tool: Arc<Mutex<Option<String>>>

当前正在执行的工具名

tool_calls_count: Arc<AtomicUsize>

累计工具调用次数

current_round: Arc<AtomicUsize>

当前轮次（1-based）

started_at: Instant

启动时刻（用于计算运行时长）