fix(multi-agent): 修复子智能体状态误判、后台任务隔离与 idle 等待异常

config/__init__.py

@@ -16,11 +16,13 @@ def _load_dotenv():
     import sys
     pre_existing_keys = set(os.environ.keys())
 
-    # 1) 仓库根 .env（开发便利，不覆盖已有环境变量）
+    # 1) 仓库根 .env（开发便利，不覆盖已有的环境变量，但 ASTRION_DATA_ROOT
+    #    作为项目数据根目录必须优先以 .env 为准，避免外部 shell 误指到 clone）
     if getattr(sys, 'frozen', False):
         env_path = Path.home() / '.astrion' / 'astrion' / '.env'
     else:
         env_path = Path(__file__).resolve().parents[1] / '.env'
+    env_from_file: dict = {}
     if env_path.exists():
         try:
             for raw_line in env_path.read_text(encoding="utf-8").splitlines():
@@ -34,11 +36,14 @@ def _load_dotenv():
                 value = value.strip().strip('"').strip("'")
                 if not key:
                     continue
+                env_from_file[key] = value
                 if key in pre_existing_keys:
                     continue
                 os.environ[key] = value
         except Exception:
             pass
+    if "ASTRION_DATA_ROOT" in env_from_file:
+        os.environ["ASTRION_DATA_ROOT"] = str(Path(env_from_file["ASTRION_DATA_ROOT"]).expanduser())
 
     # 2) settings.json（数据根下的统一配置）
     data_root = os.environ.get("ASTRION_DATA_ROOT", str(Path.home() / ".astrion" / "astrion"))

core/main_terminal_parts/tools_execution.py

@@ -101,6 +101,7 @@ from utils.api_client import DeepSeekClient
 from utils.context_manager import ContextManager
 from utils.tool_result_formatter import format_tool_result_for_context
 from utils.logger import setup_logger
+from modules.multi_agent.debug_logger import ma_debug
 from config.model_profiles import (
     get_model_profile,
     get_model_prompt_replacements,
@@ -1128,6 +1129,27 @@ class MainTerminalToolsExecutionMixin:
                                                 task_ids.append(task.get("task_id"))
                                         if missing:
                                             result = {"success": False, "error": f"未找到对应子智能体: {missing}"}
+                                        elif getattr(self, "multi_agent_mode", False):
+                                            # 多智能体模式：子智能体通过自然输出结束，不调用 finish_task。
+                                            # sleep 不再阻塞等待，而是直接返回各实例最近一次输出内容。
+                                            conv_id = self.context_manager.current_conversation_id
+                                            ma_state = manager.get_multi_agent_state(conv_id)
+                                            outputs = []
+                                            for aid in normalized_ids:
+                                                inst = ma_state.get_instance(aid) if ma_state else None
+                                                outputs.append({
+                                                    "agent_id": aid,
+                                                    "display_name": inst.display_name if inst else f"Agent_{aid}",
+                                                    "status": inst.status if inst else "unknown",
+                                                    "last_output": inst.last_output if inst else "",
+                                                })
+                                            result = {
+                                                "success": True,
+                                                "mode": "wait_sub_agent_ids",
+                                                "agent_ids": normalized_ids,
+                                                "outputs": outputs,
+                                                "message": f"已获取 {len(normalized_ids)} 个子智能体最近一次输出"
+                                            }
                                         else:
                                             wait_results = []
                                             waited_task_ids = []
@@ -1763,7 +1785,7 @@ class MainTerminalToolsExecutionMixin:
                                             agent_id=int(agent_id),
                                             summary=summary_text,
                                             task=arguments.get("task", ""),
-                                            run_in_background=bool(arguments.get("run_in_background", True)),
+                                            run_in_background=False,
                                             timeout_seconds=arguments.get("timeout_seconds"),
                                             conversation_id=conv_id,
                                             model_key=role.model_key,
@@ -1774,8 +1796,8 @@ class MainTerminalToolsExecutionMixin:
                                             system_prompt=system_prompt,
                                             task_message=task_message,
                                         )
-                                        # 在多智能体模式下，主进程 create_sub_agent 总是后台启动，
-                                        # 主智能体不需要阻塞等待，而是通过子智能体输出转发拿进度。
+                                        # 在多智能体模式下，子智能体是团队协作成员，不是传统后台任务。
+                                        # run_in_background=False 避免触发后台完成通知轮询，保持主对话输入区可用。
                                 except Exception as exc:
                                     logger.exception("[multi_agent] create_sub_agent failed")
                                     result = {"success": False, "error": str(exc)}
@@ -1865,12 +1887,27 @@ class MainTerminalToolsExecutionMixin:
                                 else:
                                     # 构造消息文本并插入子对话
                                     text = build_master_message_to_sub_agent(message)
+                                    ma_debug(
+                                        "tool_send_message_to_sub_agent",
+                                        agent_id=agent_id,
+                                        raw_message=str(message)[:500],
+                                        wrapped_message_preview=text[:500],
+                                        conversation_id=conv_id,
+                                    )
                                     ok = self.sub_agent_manager.inject_message_to_sub_agent(agent_id, text)
                                     if not ok:
                                         result = {"success": False, "error": f"子智能体 {agent_id} 不存在或已结束"}
                                     else:
                                         result = {"success": True, "agent_id": agent_id}
+                                    ma_debug(
+                                        "tool_send_message_to_sub_agent_result",
+                                        agent_id=agent_id,
+                                        conversation_id=conv_id,
+                                        ok=ok,
+                                        result=result,
+                                    )
                             except Exception as exc:
+                                logger.exception("[multi_agent] send_message_to_sub_agent failed")
                                 result = {"success": False, "error": str(exc)}
 
                     elif tool_name == "ask_sub_agent":
@@ -1896,6 +1933,14 @@ class MainTerminalToolsExecutionMixin:
                                         msg_id=question_id,
                                         target=state.get_instance(agent_id).display_name if state.get_instance(agent_id) else f"Agent_{agent_id}",
                                     )
+                                    ma_debug(
+                                        "tool_ask_sub_agent",
+                                        agent_id=agent_id,
+                                        question=str(question)[:500],
+                                        question_id=question_id,
+                                        wrapped_message_preview=text[:500],
+                                        conversation_id=conv_id,
+                                    )
                                     ok = self.sub_agent_manager.inject_message_to_sub_agent(agent_id, text)
                                     if not ok:
                                         result = {"success": False, "error": f"子智能体 {agent_id} 不存在"}
@@ -1921,6 +1966,12 @@ class MainTerminalToolsExecutionMixin:
                                 answer = arguments.get("answer", "")
                                 conv_id = self.context_manager.current_conversation_id
                                 state = self.sub_agent_manager.get_multi_agent_state(conv_id)
+                                ma_debug(
+                                    "tool_answer_sub_agent_question",
+                                    question_id=question_id,
+                                    answer_preview=str(answer)[:500],
+                                    conversation_id=conv_id,
+                                )
                                 if not state:
                                     result = {"success": False, "error": "多智能体状态未就绪"}
                                 else:

core/web_terminal.py

@@ -3,7 +3,7 @@
 import json
 import time
 from datetime import datetime
-from typing import Dict, List, Optional, Callable, TYPE_CHECKING
+from typing import Any, Dict, List, Optional, Callable, TYPE_CHECKING
 import os
 from core.main_terminal import MainTerminal
 from utils.logger import setup_logger
@@ -105,13 +105,19 @@ class WebTerminal(MainTerminal):
     # 新增：对话管理相关方法（Web版本）
     # ===========================================
     
-    def create_new_conversation(self, thinking_mode: bool = None, run_mode: Optional[str] = None) -> Dict:
+    def create_new_conversation(
+        self,
+        thinking_mode: bool = None,
+        run_mode: Optional[str] = None,
+        metadata_overrides: Optional[Dict[str, Any]] = None,
+    ) -> Dict:
         """
         创建新对话（Web版本）
 
         Args:
             thinking_mode: 思考模式，None则使用当前设置
             run_mode: 显式的运行模式（fast/thinking/deep）
+            metadata_overrides: 额外写入对话 metadata 的字段
 
         Returns:
             Dict: 包含新对话信息
@@ -171,17 +177,21 @@ class WebTerminal(MainTerminal):
         try:
             # 先创建新对话。start_new_conversation 会先 save_current_conversation()，
             # 此时 terminal.model_key 仍是旧对话的模型，避免把旧对话覆盖成默认模型。
-            conversation_id = self.context_manager.start_new_conversation(
-                project_path=self.project_path,
-                thinking_mode=thinking_mode,
-                run_mode=self.run_mode,
-                metadata_overrides={
+            metadata_overrides_merged = {
                 "permission_mode": self.get_permission_mode(),
                 "execution_mode": self.get_execution_mode() if hasattr(self, "get_execution_mode") else "sandbox",
                 "pending_permission_mode": None,
                 "pending_execution_mode": None,
                 # frozen_*_prompt 不在创建时预设，由第一次 build_messages 根据当时的实际模式懒加载并冻结
-                },
+            }
+            if isinstance(metadata_overrides, dict):
+                metadata_overrides_merged.update(metadata_overrides)
+
+            conversation_id = self.context_manager.start_new_conversation(
+                project_path=self.project_path,
+                thinking_mode=thinking_mode,
+                run_mode=self.run_mode,
+                metadata_overrides=metadata_overrides_merged,
             )
 
             # 新对话创建完成后再应用默认模型（此时旧对话已安全保存）。
@@ -377,6 +387,7 @@ class WebTerminal(MainTerminal):
                     "run_mode": self.run_mode,
                     "thinking_mode": self.thinking_mode,
                     "model_key": getattr(self, "model_key", None),
+                    "multi_agent_mode": bool(getattr(self, "multi_agent_mode", False)),
                     "message": f"对话已加载: {conversation_id}"
                 }
             else:

modules/multi_agent/debug_logger.py

@@ -0,0 +1,30 @@
+"""多智能体模式专用调试日志。
+
+把所有子智能体与主智能体之间的消息往来、注入、转发、工具调用记录下来，
+便于排查循环/重复输出等问题。日志写入 {LOGS_DIR}/multi_agent_loop.log。
+"""
+from __future__ import annotations
+
+import json
+import time
+from pathlib import Path
+from typing import Any
+
+from config.paths import LOGS_DIR
+
+
+_LOG_PATH = Path(LOGS_DIR) / "multi_agent_loop.log"
+
+
+def ma_debug(event: str, **kwargs: Any) -> None:
+    """追加一条结构化调试日志。"""
+    try:
+        _LOG_PATH.parent.mkdir(parents=True, exist_ok=True)
+        payload = {"t": time.time(), "event": event}
+        for k, v in kwargs.items():
+            payload[k] = v
+        line = json.dumps(payload, ensure_ascii=False, default=str)
+        with open(_LOG_PATH, "a", encoding="utf-8") as f:
+            f.write(line + "\n")
+    except Exception:
+        pass

modules/multi_agent/state.py

@@ -25,6 +25,7 @@ from dataclasses import dataclass, field
 from datetime import datetime
 from pathlib import Path
 from typing import Any, Dict, List, Optional, TYPE_CHECKING
+from modules.multi_agent.debug_logger import ma_debug
 
 if TYPE_CHECKING:
     from modules.sub_agent.task import SubAgentTask
@@ -298,7 +299,17 @@ class MultiAgentState:
         if question_id in self.pending_answers:
             return self.pending_answers.pop(question_id)
         if question_id in self.pending_questions:
+            old_fut = self.pending_questions[question_id]
+            try:
+                old_loop = old_fut.get_loop()
+                if old_loop.is_closed():
+                    self.pending_questions.pop(question_id, None)
+                    self.pending_question_loops.pop(question_id, None)
+                else:
                     raise RuntimeError(f"question_id 已存在: {question_id}")
+            except Exception:
+                self.pending_questions.pop(question_id, None)
+                self.pending_question_loops.pop(question_id, None)
         loop = asyncio.get_running_loop()
         fut: asyncio.Future = loop.create_future()
         self.pending_questions[question_id] = fut
@@ -329,6 +340,12 @@ class MultiAgentState:
         返回 True 表示找到等待中的 future；False 表示无等待方或已超时。
         支持跨事件循环调用（例如主对话循环回答子智能体循环里的提问）。
         """
+        ma_debug(
+            "state_provide_answer",
+            question_id=question_id,
+            has_pending=question_id in self.pending_questions,
+            answer_preview=str(answer)[:300],
+        )
         # 如果 wait_for_answer 还没注册，先把答案暂存
         if question_id not in self.pending_questions:
             self.pending_answers[question_id] = answer
@@ -349,8 +366,14 @@ class MultiAgentState:
                 return True
             except Exception:
                 pass
-        # 同循环回退
+        # 同循环回退（future 所属循环可能已关闭，失败时把答案暂存，避免阻塞方永远等不到）
+        try:
             return asyncio.run_coroutine_threadsafe(self._do_provide_answer(question_id, answer), asyncio.get_event_loop()).result(timeout=5)
+        except Exception:
+            self.pending_questions.pop(question_id, None)
+            self.pending_question_loops.pop(question_id, None)
+            self.pending_answers[question_id] = answer
+            return True
 
     def is_agent_blocking(self, agent_id: int) -> bool:
         return agent_id in self.agent_blocking_question

modules/multi_agent/tools.py

@@ -53,7 +53,10 @@ def _master_tool_create_sub_agent() -> Dict[str, Any]:
                         "type": "integer",
                         "description": "（可选）手动指定实例编号；不传时自动递增。",
                     },
-                    "timeout_seconds": {"type": "integer", "description": "超时秒数，默认 600。"},
+                    "timeout_seconds": {
+                        "type": "integer",
+                        "description": "（可选）超时秒数。不填表示该子智能体不会被时间终结，适用于可能多轮长期任务的子智能体；一般情况下推荐创建永久子智能体。",
+                    },
                     "thinking_mode": {
                         "type": "string",
                         "enum": ["fast", "thinking"],

modules/sub_agent/manager.py

@@ -30,6 +30,7 @@ from modules.sub_agent.tools import handle_search_workspace, handle_read_mediafi
 from modules.sub_agent.state import SubAgentStateMixin
 from modules.sub_agent.stats import SubAgentStatsMixin
 from modules.sub_agent.creation import SubAgentCreationMixin
+from modules.multi_agent.debug_logger import ma_debug
 
 if TYPE_CHECKING:
     from core.web_terminal import WebTerminal
@@ -199,7 +200,8 @@ class SubAgentManager(SubAgentStateMixin, SubAgentStatsMixin, SubAgentCreationMi
         if task_message:
             user_message = task_message
         else:
-            user_message = build_user_message(agent_id, summary, task, deliverables_display, timeout_seconds or SUB_AGENT_DEFAULT_TIMEOUT)
+            display_timeout = timeout_seconds if timeout_seconds is not None else 0
+            user_message = build_user_message(agent_id, summary, task, deliverables_display, display_timeout or SUB_AGENT_DEFAULT_TIMEOUT)
         task_file.write_text(user_message, encoding="utf-8")
 
         if system_prompt:
@@ -208,8 +210,7 @@ class SubAgentManager(SubAgentStateMixin, SubAgentStatsMixin, SubAgentCreationMi
             final_system_prompt = build_system_prompt(prompt_workspace)
         system_prompt_file.write_text(final_system_prompt, encoding="utf-8")
 
-        timeout_seconds = timeout_seconds or SUB_AGENT_DEFAULT_TIMEOUT
-
+        # timeout_seconds 为 None 表示永久子智能体（不会被时间终结）
         task_record = {
             "task_id": task_id,
             "agent_id": agent_id,
@@ -223,6 +224,7 @@ class SubAgentManager(SubAgentStateMixin, SubAgentStatsMixin, SubAgentCreationMi
             "updated_at": time.time(),
             "conversation_id": conversation_id,
             "run_in_background": run_in_background,
+            "multi_agent_mode": bool(multi_agent_mode),
             "task_root": str(task_root),
             "output_file": str(output_file),
             "stats_file": str(stats_file),
@@ -286,6 +288,15 @@ class SubAgentManager(SubAgentStateMixin, SubAgentStatsMixin, SubAgentCreationMi
         if multi_agent_mode and display_name:
             message = f"{display_name} 已创建，任务ID: {task_id}"
         print(f"{OUTPUT_FORMATS['info']} {message}")
+        ma_debug(
+            "manager_create_sub_agent",
+            task_id=task_id,
+            agent_id=agent_id,
+            display_name=display_name,
+            multi_agent_mode=multi_agent_mode,
+            run_in_background=task_record.get("run_in_background"),
+            timeout_seconds=timeout_seconds,
+        )
 
         return {
             "success": True,
@@ -577,6 +588,26 @@ class SubAgentManager(SubAgentStateMixin, SubAgentStatsMixin, SubAgentCreationMi
         """删除会话状态（会话结束时调用）。"""
         self.multi_agent_states.pop(conversation_id, None)
 
+    def reconcile_task_states(self, conversation_id: Optional[str] = None) -> int:
+        """修正运行态任务状态。
+
+        在父类实现前先根据内存中的 MultiAgentState 给旧任务补上 multi_agent_mode
+        标记，避免任务记录缺字段导致被当成普通子智能体误判为 failed。
+        """
+        if conversation_id and conversation_id in self.multi_agent_states:
+            state = self.multi_agent_states[conversation_id]
+            agent_ids = {a.agent_id for a in state.list_all()}
+            for task in self.tasks.values():
+                if (
+                    isinstance(task, dict)
+                    and task.get("conversation_id") == conversation_id
+                    and task.get("agent_id") in agent_ids
+                    and task.get("multi_agent_mode") is None
+                ):
+                    task["multi_agent_mode"] = True
+                    task["updated_at"] = time.time()
+        return super().reconcile_task_states(conversation_id=conversation_id)
+
     def inject_message_to_sub_agent(self, agent_id: int, message_text: str) -> bool:
         """同事件循环中向子智能体上下文插入 user 消息。
         
@@ -585,6 +616,13 @@ class SubAgentManager(SubAgentStateMixin, SubAgentStatsMixin, SubAgentCreationMi
         """
         # 查找该 agent_id 对应的 running SubAgentTask
         sub_agent = self._find_sub_agent_task_by_agent_id(agent_id)
+        ma_debug(
+            "manager_inject_message_to_sub_agent",
+            agent_id=agent_id,
+            message_preview=str(message_text)[:500],
+            found=bool(sub_agent),
+            task_id=sub_agent.task_id if sub_agent else None,
+        )
         if not sub_agent:
             return False
         sub_agent.inject_message(message_text)
@@ -606,18 +644,40 @@ class SubAgentManager(SubAgentStateMixin, SubAgentStatsMixin, SubAgentCreationMi
 
     def _on_multi_agent_task_done(self, task_id: str, agent_id: int, state: Any, sub_agent: Any) -> None:
         """SubAgentTask 结束回调会调这个更新 MultiAgentState 实例状态。"""
-        # 取出当前 status（由 _finalize_task 设置）
         final_task = self.tasks.get(task_id) or {}
-        final_status = final_task.get("status") or "terminated"
-        # 允许的自然退出：running -> idle（未走 _finalize） vs failed/timeout
-        # SubAgentTask 在多智能体模式下没有 _finalize_task，我们手动赋值 idle
-        # 如果状态被结 _finalize 为 failed/timeout，则保持该状态
+        final_status_before = final_task.get("status")
+        ma_debug(
+            "manager_on_multi_agent_task_done",
+            task_id=task_id,
+            agent_id=agent_id,
+            sub_agent_idle=getattr(sub_agent, "_idle", False),
+            sub_agent_cancelled=getattr(sub_agent, "_cancelled", False),
+            task_status_before=final_status_before,
+        )
+        # 多智能体模式下，子智能体自然进入 idle 后 Task 可能被外部事件循环取消，
+        # 或者 reconcile 把 idle 误判为 failed。优先以 SubAgentTask 自身状态为准：
+        # - 被手动取消 -> terminated
+        # - 自然进入 idle -> idle（可继续接收消息）
+        # - 真正异常/超时/finish_task 失败 -> failed/timeout
+        if getattr(sub_agent, "_cancelled", False):
+            state.mark_status(agent_id, "terminated")
+            ma_debug("manager_ma_state_set", agent_id=agent_id, status="terminated", reason="sub_agent_cancelled")
+            return
+        if getattr(sub_agent, "_idle", False):
+            state.mark_status(agent_id, "idle")
+            ma_debug("manager_ma_state_set", agent_id=agent_id, status="idle", reason="sub_agent_idle")
+            return
+
+        # 兜底：取出当前 task status（由 _finalize_task 设置）
         if final_status in TERMINAL_STATUSES:
             state.mark_status(agent_id, final_status, last_output=str(final_task.get("final_result") or ""))
+            ma_debug("manager_ma_state_set", agent_id=agent_id, status=final_status, reason="task_terminal_status")
         elif final_status == "terminated":
             state.mark_status(agent_id, "terminated")
+            ma_debug("manager_ma_state_set", agent_id=agent_id, status="terminated", reason="task_terminated_status")
         else:
             state.mark_status(agent_id, "idle")
+            ma_debug("manager_ma_state_set", agent_id=agent_id, status="idle", reason="fallback_idle")
 
     def _get_runtime_path(self, host_path: Path) -> str:
         """将宿主机路径映射为容器内路径（仅用于提示展示）。"""

modules/sub_agent/state.py

@@ -8,6 +8,7 @@ from pathlib import Path
 from typing import Any, Dict, List, Optional
 
 from utils.logger import setup_logger
+from modules.multi_agent.debug_logger import ma_debug
 
 logger = setup_logger(__name__)
 TERMINAL_STATUSES = {"completed", "failed", "timeout"}
@@ -94,6 +95,7 @@ class SubAgentStateMixin:
         try:
             output = json.loads(output_file.read_text(encoding="utf-8"))
         except Exception as exc:
+            logger.warning(f"[check_task_status] output 文件解析失败: {exc}")
             task["status"] = "failed"
             task["updated_at"] = time.time()
             return {"success": False, "status": "failed", "task_id": task_id, "message": f"输出文件解析失败: {exc}"}
@@ -103,6 +105,24 @@ class SubAgentStateMixin:
         stats = output.get("stats", {})
         elapsed_seconds = self._compute_elapsed_seconds(task)
 
+        ma_debug(
+            "check_task_status",
+            task_id=task_id,
+            agent_id=task.get("agent_id"),
+            multi_agent_mode=task.get("multi_agent_mode"),
+            output_status=output.get("status"),
+            output_success=success,
+        )
+
+        # 多智能体模式：output 中 status 为 running/idle 表示子智能体仍在运行或
+        # 本轮结束但上下文保留、可继续接收消息，都不是失败/完成。
+        # 此时不生成 final_result，只保持原状态，避免 reconcile 把运行中误判为失败。
+        if task.get("multi_agent_mode") and output.get("status") in {"running", "idle"}:
+            task["status"] = output["status"]
+            task["updated_at"] = time.time()
+            ma_debug("check_task_status_keep_alive", task_id=task_id, status=output["status"])
+            return {"status": output["status"], "task_id": task_id}
+
         if output.get("timeout"):
             status = "timeout"
         elif output.get("max_turns_exceeded"):
@@ -113,6 +133,7 @@ class SubAgentStateMixin:
         else:
             status = "failed"
 
+        ma_debug("check_task_status_result", task_id=task_id, agent_id=task.get("agent_id"), status=status)
         task["status"] = status
         task["updated_at"] = time.time()
         if status == "completed" and elapsed_seconds is not None:
@@ -237,6 +258,13 @@ class SubAgentStateMixin:
         if not task:
             return
         status = "completed" if success else "failed"
+        ma_debug(
+            "mark_task_done",
+            task_id=task_id,
+            agent_id=task.get("agent_id"),
+            success=success,
+            new_status=status,
+        )
         task["status"] = status
         task["updated_at"] = time.time()
         task["runtime_seconds"] = runtime_seconds
@@ -246,10 +274,19 @@ class SubAgentStateMixin:
     def _refresh_task_runtime_state(self, task: Dict[str, Any]) -> Dict[str, Any]:
         """刷新单个任务运行态。"""
         status = task.get("status")
-        if status in TERMINAL_STATUSES.union({"terminated"}):
-            return {"status": status, "task_id": task.get("task_id")}
-
         task_id = task.get("task_id")
+        agent_id = task.get("agent_id")
+        multi_agent_flag = task.get("multi_agent_mode")
+        ma_debug(
+            "refresh_task_runtime_state_start",
+            task_id=task_id,
+            agent_id=agent_id,
+            before_status=status,
+            multi_agent_mode=multi_agent_flag,
+        )
+        if status in TERMINAL_STATUSES.union({"terminated"}):
+            return {"status": status, "task_id": task_id}
+
         running_task = self._running_tasks.get(task_id) if task_id else None
         if running_task:
             if running_task.done():
@@ -261,18 +298,25 @@ class SubAgentStateMixin:
                 if task.get("multi_agent_mode") and not Path(task.get("output_file", "")).exists():
                     task["status"] = "idle"
                     task["updated_at"] = time.time()
+                    ma_debug("refresh_task_runtime_state_idle_no_output", task_id=task_id)
                     return {"status": "idle", "task_id": task_id}
-                return self._check_task_status(task)
+                result = self._check_task_status(task)
+                ma_debug("refresh_task_runtime_state_done_result", task_id=task_id, result=result)
+                return result
+            ma_debug("refresh_task_runtime_state_still_running", task_id=task_id)
             return {"status": "running", "task_id": task_id}
 
         output_file = Path(task.get("output_file", ""))
         if output_file.exists():
-            return self._check_task_status(task)
+            result = self._check_task_status(task)
+            ma_debug("refresh_task_runtime_state_output_result", task_id=task_id, result=result)
+            return result
 
         # 多智能体模式：没有输出文件表示 idle，不强制清理
         if task.get("multi_agent_mode"):
             task["status"] = "idle"
             task["updated_at"] = time.time()
+            ma_debug("refresh_task_runtime_state_idle_no_output_file", task_id=task_id)
             return {"status": "idle", "task_id": task_id}
 
         if self._should_force_cleanup_stale_task(task):
@@ -293,6 +337,7 @@ class SubAgentStateMixin:
     def reconcile_task_states(self, conversation_id: Optional[str] = None) -> int:
         """修正运行态任务状态，返回修正条目数。"""
         changed = 0
+        ma_debug("reconcile_task_states_start", conversation_id=conversation_id, task_count=len(self.tasks))
         for task in self.tasks.values():
             if not isinstance(task, dict):
                 continue
@@ -301,10 +346,19 @@ class SubAgentStateMixin:
             before_status = task.get("status")
             before_notified = task.get("notified")
             self._refresh_task_runtime_state(task)
-            if task.get("status") != before_status or task.get("notified") != before_notified:
+            after_status = task.get("status")
+            if after_status != before_status or task.get("notified") != before_notified:
+                ma_debug(
+                    "reconcile_task_states_changed",
+                    task_id=task.get("task_id"),
+                    agent_id=task.get("agent_id"),
+                    before_status=before_status,
+                    after_status=after_status,
+                )
                 changed += 1
         if changed:
             self._save_state()
+        ma_debug("reconcile_task_states_end", conversation_id=conversation_id, changed=changed)
         return changed
 
     def _should_force_cleanup_stale_task(self, task: Dict[str, Any]) -> bool:
@@ -314,8 +368,12 @@ class SubAgentStateMixin:
             created_at = 0
         if created_at <= 0:
             return False
+        # timeout_seconds 为 None 表示永久子智能体，不强制清理
+        raw_timeout = task.get("timeout_seconds")
+        if raw_timeout is None:
+            return False
         from config import SUB_AGENT_DEFAULT_TIMEOUT
-        timeout_seconds = int(task.get("timeout_seconds") or SUB_AGENT_DEFAULT_TIMEOUT or 0)
+        timeout_seconds = int(raw_timeout or SUB_AGENT_DEFAULT_TIMEOUT or 0)
         timeout_seconds = max(timeout_seconds, 1)
         grace_seconds = 120
         elapsed = time.time() - created_at

modules/sub_agent/task.py

@@ -27,6 +27,8 @@ if TYPE_CHECKING:
     from modules.sub_agent.manager import SubAgentManager
     from modules.multi_agent.state import MultiAgentState
 
+from modules.multi_agent.debug_logger import ma_debug
+
 logger = setup_logger(__name__)
 
 # 多智能体模式下额外加载的工具定义
@@ -63,7 +65,8 @@ class SubAgentTask:
         self.thinking_mode = thinking_mode or "fast"
         self.task_id = task_record["task_id"]
         self.agent_id = task_record["agent_id"]
-        self.timeout_seconds = int(task_record.get("timeout_seconds") or 180)
+        raw_timeout = task_record.get("timeout_seconds")
+        self.timeout_seconds = int(raw_timeout) if raw_timeout is not None else None
         self.deliverables_dir = Path(task_record["deliverables_dir"])
 
         self.output_file = Path(task_record["output_file"])
@@ -97,8 +100,9 @@ class SubAgentTask:
         # display_name 不传时回退为 'Agent_{self.agent_id}'
         self.display_name = display_name or f"Agent_{self.agent_id}"
         # 多智能体运行期控制
-        # 使用 threading.Event 避免跨事件循环唤醒问题
-        self._continue_event = threading.Event()
+        # 使用 asyncio.Event 在子智能体自己的事件循环内等待；
+        # inject_message 可能跨线程调用，通过 loop.call_soon_threadsafe 唤醒。
+        self._continue_event: Optional[asyncio.Event] = None
         self._idle = False
         self._pending_answer_question_id: Optional[str] = None
         self._answered_question_ids: Set[str] = set()
@@ -116,16 +120,20 @@ class SubAgentTask:
 
     async def run(self) -> None:
         """主 LLM 循环。"""
+        # 在子智能体自己的事件循环内初始化 asyncio.Event
+        self._continue_event = asyncio.Event()
         try:
             await self._run_loop()
         except asyncio.CancelledError:
             self._cancelled = True
             logger.debug(f"[SubAgent] task={self.task_id} 被取消")
+            ma_debug("sub_agent_run_cancelled", task_id=self.task_id, agent_id=self.agent_id, display_name=self.display_name)
             # shield 避免取消信号中断最终状态落盘
             await asyncio.shield(self._write_failure("子智能体被手动终止"))
             raise
         except Exception as exc:
             logger.exception(f"[SubAgent] task={self.task_id} 执行异常")
+            ma_debug("sub_agent_run_exception", task_id=self.task_id, agent_id=self.agent_id, display_name=self.display_name, error=str(exc))
             await self._write_failure(f"执行异常: {exc}")
 
     async def _run_loop(self) -> None:
@@ -144,22 +152,33 @@ class SubAgentTask:
 
         while not self._cancelled:
             elapsed = time.time() - start_time
-            if elapsed > self.timeout_seconds:
+            if self.timeout_seconds is not None and elapsed > self.timeout_seconds:
                 await self._write_timeout(elapsed)
                 return
 
-            # 多智能体模式下，idle 时等待新消息或外部回答；超时后继续循环检查
+            # 多智能体模式下，idle 时等待新消息或外部回答；只有真正被注入消息时才继续运行
             if self.multi_agent_mode and self._idle:
+                event_set = False
                 try:
-                    await asyncio.wait_for(
-                        asyncio.get_event_loop().run_in_executor(None, self._continue_event.wait),
-                        timeout=1.0,
-                    )
+                    if self._continue_event is None:
+                        self._continue_event = asyncio.Event()
+                    await asyncio.wait_for(self._continue_event.wait(), timeout=1.0)
+                    event_set = True
                 except asyncio.TimeoutError:
                     pass
-                self._continue_event.clear()
                 if self._cancelled:
                     break
+                if not event_set:
+                    # 只是周期性检查取消状态，没有新消息，保持 idle 继续等待
+                    continue
+                self._continue_event.clear()
+                ma_debug(
+                    "sub_agent_idle_wake",
+                    task_id=self.task_id,
+                    agent_id=self.agent_id,
+                    display_name=self.display_name,
+                    pending_messages=[m.get("role") for m in self.messages[-3:]],
+                )
                 self._idle = False
                 continue
 
@@ -177,6 +196,18 @@ class SubAgentTask:
             if self.multi_agent_mode:
                 self._pending_answer_question_id = self._peek_pending_question_id()
 
+            # 调试：记录进入本轮模型调用前的上下文摘要
+            ma_debug(
+                "sub_agent_model_call_start",
+                task_id=self.task_id,
+                agent_id=self.agent_id,
+                display_name=self.display_name,
+                turn=turn,
+                message_count=len(self.messages),
+                last_user_message=self.messages[-1].get("content", "")[:300] if self.messages and self.messages[-1].get("role") == "user" else "",
+                pending_answer_question_id=self._pending_answer_question_id,
+            )
+
             assistant_message, reasoning, tool_calls, usage = await self._call_model(client, model_key, tools)
             if usage:
                 self._apply_usage(usage)
@@ -191,12 +222,14 @@ class SubAgentTask:
             if tool_calls:
                 final_message["tool_calls"] = tool_calls
             self.messages.append(final_message)
+            self._persist_conversation(partial_summary=assistant_message[:200])
 
             if not tool_calls:
                 # 多智能体模式：没有 tool_calls 表示本轮结束，进入 idle 等待
                 if self.multi_agent_mode:
                     self._mark_idle()
                     self._idle = True
+                    self._persist_conversation(partial_summary=assistant_message[:200])
                     continue
                 # 普通模式：prompt 并要求继续 / finish_task
                 self.messages.append({
@@ -230,6 +263,7 @@ class SubAgentTask:
                     "tool_call_id": tool_call.get("id", progress_id),
                     "content": content,
                 })
+                self._persist_conversation(partial_summary=assistant_message[:200])
 
         # 循环结束（取消或 idle 被外部终止）后的清理
         if self.multi_agent_mode and self._cancelled:
@@ -237,7 +271,7 @@ class SubAgentTask:
                 self.multi_agent_state.mark_status(self.agent_id, "terminated")
 
     def _forward_output_to_master(self, output_text: str, *, is_final: bool = False) -> None:
-        """把子智能体的 assistant 文本输出转发成主对话的 user 消息。"""
+        """把子智能体的 assistant 文本输出转发成主对话的 user 消息，并写入进度文件供前端查看。"""
         if not self.multi_agent_state:
             return
         # 如果这是对 pending 提问的回答，不走主对话转发，而是返回到 ask 工具结果
@@ -251,17 +285,58 @@ class SubAgentTask:
             inst = self.multi_agent_state.get_instance(self.agent_id)
             if inst:
                 inst.last_output = output_text[:500]
+            # 写入进度文件，前端子智能体进度弹窗可直接展示
+            self.emit("progress", {
+                "subtype": "output",
+                "content": output_text,
+                "is_final": is_final,
+                "ts": int(time.time() * 1000),
+            })
+            ma_debug(
+                "sub_agent_output_forwarded",
+                task_id=self.task_id,
+                agent_id=self.agent_id,
+                display_name=self.display_name,
+                is_final=is_final,
+                content_preview=output_text[:300],
+            )
         except Exception as exc:
             logger.warning(f"[SubAgentTask] forward output to master failed: {exc}")
 
     def _mark_idle(self) -> None:
         """多智能体模式下，子智能体自然结束即本轮任务结束，进入 idle 状态。"""
+        ma_debug(
+            "sub_agent_mark_idle",
+            task_id=self.task_id,
+            agent_id=self.agent_id,
+            display_name=self.display_name,
+        )
         if self.multi_agent_state:
             self.multi_agent_state.mark_status(self.agent_id, "idle")
 
     def inject_message(self, message_text: str) -> None:
         """外部向子智能体上下文插入 user 消息，并唤醒 idle 状态。"""
         self.messages.append({"role": "user", "content": message_text})
+        ma_debug(
+            "sub_agent_message_injected",
+            task_id=self.task_id,
+            agent_id=self.agent_id,
+            display_name=self.display_name,
+            message_preview=str(message_text)[:500],
+            was_idle=self._idle,
+        )
+        # inject_message 可能从其他线程（主对话线程）调用，需要线程安全唤醒。
+        # 优先使用子智能体 Task 所属事件循环投递 set()，避免跨线程直接操作 Future。
+        if self._continue_event is None:
+            self._continue_event = asyncio.Event()
+        if self._task is not None:
+            try:
+                task_loop = self._task.get_loop()
+                if task_loop.is_running():
+                    task_loop.call_soon_threadsafe(self._continue_event.set)
+                    return
+            except Exception:
+                pass
         self._continue_event.set()
 
     def _peek_pending_question_id(self) -> Optional[str]:
@@ -409,6 +484,14 @@ class SubAgentTask:
             if name == "ask_master":
                 question = str(args.get("question") or "").strip()
                 question_id = str(args.get("question_id") or f"ask_master_{uuid.uuid4().hex[:10]}")
+                ma_debug(
+                    "sub_agent_tool_ask_master",
+                    task_id=self.task_id,
+                    agent_id=self.agent_id,
+                    display_name=self.display_name,
+                    question_id=question_id,
+                    question=question[:500],
+                )
                 if not question:
                     return {"success": False, "error": "question 不能为空"}
                 # 插入到主对话
@@ -428,6 +511,15 @@ class SubAgentTask:
                 target_id = int(args.get("target_agent_id") or 0)
                 question = str(args.get("question") or "").strip()
                 question_id = str(args.get("question_id") or f"ask_other_{uuid.uuid4().hex[:10]}")
+                ma_debug(
+                    "sub_agent_tool_ask_other_agent",
+                    task_id=self.task_id,
+                    agent_id=self.agent_id,
+                    display_name=self.display_name,
+                    target_agent_id=target_id,
+                    question_id=question_id,
+                    question=question[:500],
+                )
                 if not target_id or not question:
                     return {"success": False, "error": "参数缺失"}
                 # 查找目标实例
@@ -516,10 +608,75 @@ class SubAgentTask:
 
     async def _write_failure(self, message: str, *, max_turns_exceeded: bool = False, timeout: bool = False) -> None:
         elapsed = time.time() - (self.stats["runtime_start"] / 1000)
+        ma_debug(
+            "sub_agent_write_failure",
+            task_id=self.task_id,
+            agent_id=self.agent_id,
+            display_name=self.display_name,
+            message=message,
+            max_turns_exceeded=max_turns_exceeded,
+            timeout=timeout,
+            idle=self._idle,
+            cancelled=self._cancelled,
+        )
         self._finalize_task(False, message, elapsed, max_turns_exceeded=max_turns_exceeded, timeout=timeout)
 
+    def _persist_conversation(self, *, partial_summary: str = "") -> None:
+        """每轮结束后立即落盘子智能体对话，避免跑完了才存一次导致中间状态丢失。"""
+        try:
+            runtime_seconds = int((time.time() * 1000 - self.stats["runtime_start"]) / 1000)
+            status = "running"
+            if self._cancelled:
+                status = "terminated"
+            elif self.multi_agent_mode and self._idle:
+                status = "idle"
+            ma_debug(
+                "sub_agent_persist_conversation",
+                task_id=self.task_id,
+                agent_id=self.agent_id,
+                display_name=self.display_name,
+                status=status,
+                idle=self._idle,
+                cancelled=self._cancelled,
+                multi_agent_mode=self.multi_agent_mode,
+            )
+            conversation_data = {
+                "agent_id": self.agent_id,
+                "task_id": self.task_id,
+                "created_at": datetime.fromtimestamp(self.stats["runtime_start"] / 1000).isoformat(),
+                "updated_at": datetime.now().isoformat(),
+                "status": status,
+                "success": None,
+                "summary": partial_summary,
+                "messages": self.messages,
+                "stats": {**self.stats, "runtime_seconds": runtime_seconds, "turn_count": self.stats.get("turn_count", 0)},
+            }
+            self.conversation_file.parent.mkdir(parents=True, exist_ok=True)
+            self.conversation_file.write_text(json.dumps(conversation_data, ensure_ascii=False), encoding="utf-8")
+
+            output_data = {
+                "success": None,
+                "status": status,
+                "summary": partial_summary,
+                "stats": conversation_data["stats"],
+            }
+            self.output_file.parent.mkdir(parents=True, exist_ok=True)
+            self.output_file.write_text(json.dumps(output_data, ensure_ascii=False), encoding="utf-8")
+        except Exception as exc:
+            logger.warning(f"[SubAgentTask] 增量保存失败: {exc}")
+
     def _finalize_task(self, success: bool, summary: str, elapsed: float, *, max_turns_exceeded: bool = False, timeout: bool = False) -> None:
         runtime_seconds = int(elapsed)
+        ma_debug(
+            "sub_agent_finalize_task",
+            task_id=self.task_id,
+            agent_id=self.agent_id,
+            display_name=self.display_name,
+            success=success,
+            summary=summary,
+            idle=self._idle,
+            cancelled=self._cancelled,
+        )
         output_data = {
             "success": success,
             "summary": summary,

server/chat_flow_task_main.py

@@ -826,13 +826,13 @@ def _has_pending_completion_work(*, web_terminal, conversation_id: str) -> bool:
                 has_unnotified_non_ma = True
         if has_running_non_ma or has_unnotified_non_ma:
             return True
-        # 多智能体模式：有未消费的主对话消息 或 有运行中（非 idle）实例时继续轮询
-        if getattr(web_terminal, "multi_agent_mode", False) and has_running_ma:
+        # 多智能体模式：只要有未消费的主对话消息，或还有未结束（非 idle/terminated）的实例，就继续轮询。
+        # 即使全部实例都已 idle，只要 pending 消息尚未消费，也要继续，避免主任务结束后通知丢失。
+        if getattr(web_terminal, "multi_agent_mode", False):
             state = sub_manager.get_multi_agent_state(conversation_id)
             if state:
                 if state.has_pending_master_messages():
                     return True
-                # 只要还有非 idle 实例就继续；全部 idle 且无 pending 则结束轮询
                 if any(a.status not in {"idle", "terminated"} for a in state.list_all()):
                     return True
                 return False
@@ -1839,6 +1839,7 @@ async def handle_task_with_sender(
     # 检查是否有后台运行的子智能体或待通知的完成任务
     manager = getattr(web_terminal, "sub_agent_manager", None)
     has_running_sub_agents = False
+    has_running_multi_agent = False
     bg_manager = getattr(web_terminal, "background_command_manager", None)
     has_running_background_commands = False
     if manager:
@@ -1848,16 +1849,33 @@ async def handle_task_with_sender(
             debug_log(f"[SubAgent] reconcile_task_states failed: {exc}")
         if not hasattr(web_terminal, "_announced_sub_agent_tasks"):
             web_terminal._announced_sub_agent_tasks = set()
+
+        # 多智能体模式：检测是否还有运行中/idle 的多智能体实例。
+        # 它们不是传统后台任务，不阻塞前端输入区，但需要通知池在主任务结束后
+        # 继续消费 pending 消息并触发 Team Leader 响应。
+        if getattr(web_terminal, "multi_agent_mode", False):
+            for task in manager.tasks.values():
+                if (
+                    isinstance(task, dict)
+                    and task.get("conversation_id") == conversation_id
+                    and task.get("multi_agent_mode")
+                    and task.get("status") not in TERMINAL_STATUSES.union({"terminated"})
+                ):
+                    has_running_multi_agent = True
+                    break
+
         running_tasks = [
             task for task in manager.tasks.values()
             if task.get("status") not in TERMINAL_STATUSES.union({"terminated"})
             and task.get("run_in_background")
+            and not task.get("multi_agent_mode")
             and task.get("conversation_id") == conversation_id
         ]
         pending_notice_tasks = [
             task for task in manager.tasks.values()
             if task.get("status") in TERMINAL_STATUSES.union({"terminated"})
             and task.get("run_in_background")
+            and not task.get("multi_agent_mode")
             and task.get("conversation_id") == conversation_id
             and task.get("task_id") not in web_terminal._announced_sub_agent_tasks
         ]
@@ -1884,11 +1902,11 @@ async def handle_task_with_sender(
             # 与子智能体完全复用同一 waiting 事件（前端已有稳定处理链路）
             sender('sub_agent_waiting', _build_shared_waiting_payload(waiting_items))
 
-    # 统一「通知池」轮询器：子智能体 + 后台 run_command 合并为单一轮询链路，
-    # 每轮一次性取出两路所有待通知项，避免逐条触发「工作 → 停止 → 再工作」循环。
+    # 统一「通知池」轮询器：子智能体 + 后台 run_command + 多智能体 pending 消息
+    # 合并为单一轮询链路，每轮一次性取出所有待通知项，避免逐条触发「工作 → 停止 → 再工作」循环。
     # 只 spawn 一个轮询器（无论是否同时存在子智能体与后台命令），从根本上消除
     # 两个轮询器同时 create_chat_task 撞「单工作区互斥」的问题。
-    if has_running_sub_agents or has_running_background_commands:
+    if has_running_sub_agents or has_running_background_commands or has_running_multi_agent:
         def run_completion_poll():
             import asyncio
             loop = asyncio.new_event_loop()

server/chat_flow_task_support.py

@@ -6,6 +6,7 @@ from datetime import datetime
 from typing import Any, Callable, Dict, List, Optional
 
 from modules.sub_agent import TERMINAL_STATUSES
+from modules.multi_agent.debug_logger import ma_debug
 
 
 _VALID_SOURCES = {
@@ -329,6 +330,14 @@ def inject_multi_agent_master_message(
     if not raw:
         return None
 
+    ma_debug(
+        "inject_multi_agent_master_message",
+        conversation_id=conversation_id,
+        text_preview=raw[:300],
+        inline=inline,
+        after_tool_call_id=after_tool_call_id,
+    )
+
     metadata = {
         "runtime_injected": True,
         "source": "sub_agent",
@@ -405,6 +414,12 @@ async def process_multi_agent_master_messages(
     if not pending:
         return 0
     debug_log(f"[MultiAgent] draining {len(pending)} pending master messages")
+    ma_debug(
+        "process_multi_agent_master_messages",
+        conversation_id=conversation_id,
+        count=len(pending),
+        previews=[str(m)[:200] for m in pending],
+    )
     for msg in pending:
         inject_multi_agent_master_message(
             web_terminal=web_terminal,

server/conversation.py

@@ -598,6 +598,7 @@ def create_conversation(terminal: WebTerminal, workspace: UserWorkspace, usernam
         thinking_mode = data.get('thinking_mode') if preserve_mode and 'thinking_mode' in data else None
         run_mode = data.get('mode') if preserve_mode and 'mode' in data else None
         target_workspace_id = (data.get('workspace_id') or '').strip()
+        multi_agent_mode = bool(data.get('multi_agent_mode'))
 
         if target_workspace_id:
             try:
@@ -641,6 +642,7 @@ def create_conversation(terminal: WebTerminal, workspace: UserWorkspace, usernam
                 metadata_overrides={
                     "permission_mode": default_permission_mode or getattr(terminal, "get_permission_mode", lambda: "unrestricted")(),
                     "execution_mode": getattr(terminal, "get_execution_mode", lambda: "sandbox")(),
+                    "multi_agent_mode": multi_agent_mode,
                 },
             )
             try:
@@ -654,7 +656,11 @@ def create_conversation(terminal: WebTerminal, workspace: UserWorkspace, usernam
                 "safe_navigation": True,
             }
         else:
-            result = terminal.create_new_conversation(thinking_mode=thinking_mode, run_mode=run_mode)
+            result = terminal.create_new_conversation(
+                thinking_mode=thinking_mode,
+                run_mode=run_mode,
+                metadata_overrides={"multi_agent_mode": multi_agent_mode} if multi_agent_mode else None,
+            )
 
         if result["success"]:
             # 仅在当前工作区创建时更新 session 模式；指定其他工作区时由前端切换后自动同步。

static/src/app/methods/conversation/action.ts

@@ -122,15 +122,17 @@ export const actionMethods = {
         this.versioningInitializingBackupToastId = backupToastId;
       }
 
-      const response = await fetch('/api/conversations', {
+      const isMultiAgent = Boolean(this.multiAgentMode);
+      const createUrl = isMultiAgent ? '/api/multiagent/conversations' : '/api/conversations';
+      const createBody = isMultiAgent
+        ? JSON.stringify({ preserve_mode: true, thinking_mode: this.thinkingMode, mode: this.runMode })
+        : JSON.stringify({ thinking_mode: this.thinkingMode, mode: this.runMode });
+      const response = await fetch(createUrl, {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json'
         },
-        body: JSON.stringify({
-          thinking_mode: this.thinkingMode,
-          mode: this.runMode
-        })
+        body: createBody
       });
 
       const result = await response.json();

static/src/app/methods/message/send.ts

@@ -209,15 +209,17 @@ export const sendMethods = {
           this.versioningInitializingBackupToastId = backupToastId;
         }
 
-        const createResp = await fetch('/api/conversations', {
+        const isMultiAgent = Boolean(this.multiAgentMode);
+        const createUrl = isMultiAgent ? '/api/multiagent/conversations' : '/api/conversations';
+        const createBody = isMultiAgent
+          ? JSON.stringify({ preserve_mode: true, thinking_mode: this.thinkingMode, mode: this.runMode })
+          : JSON.stringify({ thinking_mode: this.thinkingMode, mode: this.runMode });
+        const createResp = await fetch(createUrl, {
           method: 'POST',
           headers: {
             'Content-Type': 'application/json'
           },
-          body: JSON.stringify({
-            thinking_mode: this.thinkingMode,
-            mode: this.runMode
-          })
+          body: createBody
         });
         const createResult = await createResp.json().catch(() => ({}));
         if (!createResp.ok || !createResult?.success || !createResult?.conversation_id) {
@@ -258,7 +260,8 @@ export const sendMethods = {
         }
 
         const pathFragment = this.stripConversationPrefix(targetConversationId);
-        history.replaceState({ conversationId: targetConversationId }, '', `/${pathFragment}`);
+        const urlPrefix = this.multiAgentMode ? '/multiagent/' : '/';
+        history.replaceState({ conversationId: targetConversationId }, '', `${urlPrefix}${pathFragment}`);
       } catch (error) {
         this.uiPushToast({
           title: '发送失败',

static/src/components/overlay/SubAgentActivityDialog.vue

@@ -29,13 +29,29 @@
         </div>
         <div class="subagent-activity-body">
           <div v-if="activityError" class="subagent-activity-error">{{ activityError }}</div>
-          <div v-else-if="!displayItems.length" class="subagent-activity-empty">
+          <div v-else-if="!timelineItems.length" class="subagent-activity-empty">
             {{ activityLoading ? '正在读取子智能体活动...' : '暂无活动记录' }}
           </div>
           <div v-else class="subagent-activity-list">
-            <div v-for="item in displayItems" :key="item.key" class="subagent-activity-item">
+            <div
+              v-for="item in timelineItems"
+              :key="item.key"
+              class="subagent-activity-item"
+              :class="{ 'subagent-output-item': item.kind === 'output', expanded: item.kind === 'output' && expandedOutputs.has(item.key) }"
+              @click="handleItemClick(item)"
+            >
+              <template v-if="item.kind === 'output'">
+                <div class="subagent-output-meta">
+                  <span v-if="item.isFinal" class="subagent-output-final">结束汇报</span>
+                  <span v-else class="subagent-output-progress">进度输出</span>
+                  <span class="subagent-output-hint">{{ expandedOutputs.has(item.key) ? '点击收起' : '点击展开' }}</span>
+                </div>
+                <div class="subagent-output-content">{{ item.content }}</div>
+              </template>
+              <template v-else>
                 <span class="subagent-activity-text">{{ item.text }}</span>
                 <span class="subagent-activity-state" :class="item.state">{{ item.stateLabel }}</span>
+              </template>
             </div>
           </div>
         </div>
@@ -50,17 +66,22 @@ import { storeToRefs } from 'pinia';
 import { useSubAgentStore } from '@/stores/subAgent';
 
 type ActivityEntry = {
+  type?: string;
   id?: string;
   tool?: string;
   status?: string;
   args?: Record<string, any>;
   ts?: number;
+  subtype?: string;
+  content?: string;
+  is_final?: boolean;
 };
 
 const subAgentStore = useSubAgentStore();
 const { activeAgent, activityEntries, activityLoading, activityError, stoppingTaskIds } =
   storeToRefs(subAgentStore);
 const stopError = ref('');
+const expandedOutputs = ref<Set<string>>(new Set());
 
 const close = () => {
   subAgentStore.closeSubAgent();
@@ -141,48 +162,138 @@ const isTerminalStatus = (status?: string) => {
   return ['completed', 'failed', 'timeout', 'terminated', 'cancelled'].includes(normalized);
 };
 
-const displayItems = computed(() => {
+const toggleOutput = (key: string) => {
+  const next = new Set(expandedOutputs.value);
+  if (next.has(key)) {
+    next.delete(key);
+  } else {
+    next.add(key);
+  }
+  expandedOutputs.value = next;
+};
+
+const handleItemClick = (item: any) => {
+  if (item.kind === 'output') {
+    toggleOutput(item.key);
+  }
+};
+
+const timelineItems = computed(() => {
   const entries = activityEntries.value || [];
-  const groups: { key: string; entry: ActivityEntry }[] = [];
+  const rawItems: { kind: 'tool'; key: string; entry: ActivityEntry } | { kind: 'output'; key: string; content: string; isFinal: boolean }[] = [];
+  let currentToolGroup: { kind: 'tool'; key: string; entry: ActivityEntry } | null = null;
 
-  for (let i = 0; i < entries.length; i++) {
-    const entry = entries[i];
-    if (!entry || entry.type !== 'progress') continue;
+  const flushToolGroup = () => {
+    if (currentToolGroup) {
+      rawItems.push(currentToolGroup);
+      currentToolGroup = null;
+    }
+  };
 
-    const baseKey = entry.id || `${entry.tool || 'tool'}-${entry.ts || i}`;
-    const lastGroup = groups[groups.length - 1];
-
-    // 同一个 id 的相邻进度更新（running -> completed）合并为一次工具调用。
-    // 如果上一个同 id 的组已经进入终态，则后续同 id 的记录视为新的工具调用。
-    if (
-      lastGroup &&
-      (lastGroup.entry.id === entry.id || lastGroup.key === baseKey) &&
-      !isTerminalStatus(lastGroup.entry.status)
-    ) {
-      lastGroup.entry = { ...lastGroup.entry, ...entry };
-      continue;
+  entries.forEach((entry: ActivityEntry, index: number) => {
+    if (entry?.type === 'progress' && entry?.subtype === 'output' && typeof entry.content === 'string') {
+      flushToolGroup();
+      rawItems.push({
+        kind: 'output',
+        key: `output-${entry.ts || index}`,
+        content: entry.content,
+        isFinal: !!entry.is_final,
+      });
+      return;
     }
 
-    // 生成唯一 key：id 重复时加上序号
+    if (!entry || entry.type !== 'progress' || !entry.tool) return;
+
+    const baseKey = entry.id || `${entry.tool}-${entry.ts || index}`;
+    if (
+      currentToolGroup &&
+      (currentToolGroup.entry.id === entry.id || currentToolGroup.key === baseKey) &&
+      !isTerminalStatus(currentToolGroup.entry.status)
+    ) {
+      currentToolGroup.entry = { ...currentToolGroup.entry, ...entry };
+      return;
+    }
+
+    flushToolGroup();
     let key = baseKey;
     let suffix = 0;
-    while (groups.some((g) => g.key === key)) {
+    while (rawItems.some((item) => item.kind === 'tool' && item.key === key)) {
       suffix++;
       key = `${baseKey}--${suffix}`;
     }
-    groups.push({ key, entry: { ...entry } });
-  }
+    currentToolGroup = { kind: 'tool', key, entry: { ...entry } };
+  });
 
-  return groups.map((group) => {
-    const item = group.entry;
-    const state = normalizeStatus(item.status);
-    const stateLabel = state === 'completed' ? '完成' : state === 'failed' ? '失败' : '进行中';
+  flushToolGroup();
+
+  return rawItems.map((item) => {
+    if (item.kind === 'output') return item;
+    const state = normalizeStatus(item.entry.status);
     return {
-      key: group.key,
+      kind: 'tool' as const,
+      key: item.key,
       state,
-      stateLabel,
-      text: buildText(item)
+      stateLabel: state === 'completed' ? '完成' : state === 'failed' ? '失败' : '进行中',
+      text: buildText(item.entry)
     };
   });
 });
 </script>
+
+<style scoped>
+.subagent-output-section {
+  margin-bottom: 16px;
+}
+.subagent-output-title,
+.subagent-activity-list-title {
+  font-weight: 600;
+  font-size: 14px;
+  margin-bottom: 8px;
+  color: var(--text-primary);
+}
+.subagent-output-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+.subagent-output-item {
+  background: var(--surface-soft);
+  border: 1px solid var(--border-default);
+  border-radius: 8px;
+  padding: 10px 12px;
+  cursor: pointer;
+}
+.subagent-output-meta {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 12px;
+  margin-bottom: 6px;
+  color: var(--text-muted);
+}
+.subagent-output-final {
+  color: var(--accent);
+  font-weight: 600;
+}
+.subagent-output-progress {
+  color: var(--text-secondary);
+}
+.subagent-output-hint {
+  margin-left: auto;
+  opacity: 0.7;
+}
+.subagent-output-content {
+  color: var(--text-primary);
+  white-space: pre-wrap;
+  word-break: break-word;
+  line-height: 1.5;
+  overflow: hidden;
+  display: -webkit-box;
+  -webkit-line-clamp: 3;
+  -webkit-box-orient: vertical;
+}
+.subagent-output-item.expanded .subagent-output-content {
+  -webkit-line-clamp: unset;
+  display: block;
+}
+</style>

static/src/composables/useLegacySocket.ts

@@ -1590,7 +1590,8 @@ export async function initializeLegacySocket(ctx: any) {
       const hasRunningSubAgents = !!data?.has_running_sub_agents;
       const hasRunningBackgroundCommands = !!data?.has_running_background_commands;
       const hasRunningBackground = hasRunningSubAgents || hasRunningBackgroundCommands;
-      if (!hasRunningBackground) {
+      // 多智能体模式下，主任务停止即可恢复输入区，不因子智能体后台运行保持停止按钮
+      if (ctx.multiAgentMode || !hasRunningBackground) {
         ctx.taskInProgress = false;
       } else {
         ctx.waitingForSubAgent = hasRunningSubAgents;
@@ -1616,8 +1617,8 @@ export async function initializeLegacySocket(ctx: any) {
       });
       socketLog('任务完成', data);
 
-      // 如果有运行中的子智能体，不重置任务状态
-      if (!data.has_running_sub_agents) {
+      // 多智能体模式下，主任务完成即视为可发送状态，后台子智能体是否 idle/running 不影响输入区
+      if (ctx.multiAgentMode || !data.has_running_sub_agents) {
         console.log('[DEBUG] 没有运行中的子智能体，重置任务状态');
         if (ctx.waitingForSubAgent) {
           ctx.waitingForSubAgent = false;
@@ -1652,6 +1653,8 @@ export async function initializeLegacySocket(ctx: any) {
       });
       socketLog('等待子智能体完成:', data);
 
+      // 多智能体模式下，子智能体 idle/running 是常态，不阻塞主对话输入区
+      if (!ctx.multiAgentMode) {
         // 设置标志：有子智能体在运行，阻止状态重置
         ctx.waitingForSubAgent = true;
 
@@ -1659,6 +1662,7 @@ export async function initializeLegacySocket(ctx: any) {
         ctx.taskInProgress = true;
         ctx.streamingMessage = false;
         ctx.stopRequested = false;
+      }
 
       console.log('[DEBUG] 当前状态 (after sub_agent_waiting):', {
         taskInProgress: ctx.taskInProgress,