feat(agents): Phase 7-10 hook system, plugins, skills, orchestration

Phase 7: Built-in Hooks (audit_log, dangerous_confirmation, security_scan)
Phase 8: Plugin system (PluginManager, PluginSandbox, PluginManifest)
Phase 9: Skills registry (SkillRegistry, local/plugin/MCP loaders)
Phase 10: TeamLeader, RemoteTransport, BackgroundTaskManager

backend/app/agents/team/leader.py

@@ -0,0 +1,121 @@
+"""Team 多 Agent 协作 - Phase 10.1"""
+
+from dataclasses import dataclass, field
+from typing import Any
+from enum import Enum
+
+
+class TaskStatus(Enum):
+    PENDING = "pending"
+    IN_PROGRESS = "in_progress"
+    COMPLETED = "completed"
+    FAILED = "failed"
+
+
+@dataclass
+class TeamTask:
+    """团队任务"""
+
+    id: str
+    description: str
+    assignee: str | None = None
+    status: TaskStatus = TaskStatus.PENDING
+    result: Any = None
+    error: str | None = None
+
+
+class TeamLeader:
+    """团队领导者
+
+    协调多个 Agent 成员执行任务。
+    """
+
+    def __init__(self, team_id: str, members: list[str]):
+        """
+        Args:
+            team_id: 团队 ID
+            members: 成员 ID 列表
+        """
+        self.team_id = team_id
+        self.members = members
+        self._tasks: dict[str, TeamTask] = {}
+
+    def create_task(self, description: str) -> str:
+        """创建任务
+
+        Args:
+            description: 任务描述
+
+        Returns:
+            任务 ID
+        """
+        import uuid
+
+        task_id = str(uuid.uuid4())[:8]
+        self._tasks[task_id] = TeamTask(
+            id=task_id,
+            description=description,
+        )
+        return task_id
+
+    def assign_task(self, task_id: str, member: str) -> bool:
+        """分配任务
+
+        Args:
+            task_id: 任务 ID
+            member: 成员 ID
+
+        Returns:
+            是否成功
+        """
+        if task_id not in self._tasks:
+            return False
+
+        if member not in self.members:
+            return False
+
+        self._tasks[task_id].assignee = member
+        self._tasks[task_id].status = TaskStatus.IN_PROGRESS
+        return True
+
+    def broadcast_task(self, description: str) -> list[str]:
+        """广播任务给所有成员
+
+        Args:
+            description: 任务描述
+
+        Returns:
+            创建的任务 ID 列表
+        """
+        task_ids = []
+        for member in self.members:
+            task_id = self.create_task(description)
+            self.assign_task(task_id, member)
+            task_ids.append(task_id)
+        return task_ids
+
+    def collect_results(self) -> dict[str, Any]:
+        """收集所有任务结果
+
+        Returns:
+            任务 ID -> 结果的映射
+        """
+        return {
+            task_id: task.result
+            for task_id, task in self._tasks.items()
+            if task.status == TaskStatus.COMPLETED
+        }
+
+    def get_team_status(self) -> dict[str, Any]:
+        """获取团队状态
+
+        Returns:
+            团队状态摘要
+        """
+        return {
+            "team_id": self.team_id,
+            "members": self.members,
+            "task_count": len(self._tasks),
+            "completed": sum(1 for t in self._tasks.values() if t.status == TaskStatus.COMPLETED),
+            "failed": sum(1 for t in self._tasks.values() if t.status == TaskStatus.FAILED),
+        }