refactor(backend): 调整模块结构、调度器逻辑与健康检查路由

backend/app/modules/monitor/online/schema.py

@@ -0,0 +1,45 @@
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+from app.core.base_schema import SessionInfoSchema
+
+
+class OnlineOutSchema(SessionInfoSchema):
+    """在线用户响应模型 — ``SessionInfoSchema`` 的公开子集。"""
+
+
+class OnlineQueryParam(BaseModel):
+    """在线用户查询参数"""
+
+    name: str | None = Field(None, description="登录名称")
+    ipaddr: str | None = Field(None, description="登陆IP地址")
+    login_location: str | None = Field(None, description="登录所属地")
+
+
+class RecentLoginItem(BaseModel):
+    """最近登录记录"""
+    username: str
+    status: int
+    login_time: datetime
+    login_ip: str | None = None
+    login_location: str | None = None
+
+
+class LoginTrendItem(BaseModel):
+    """登录趋势（按天聚合）"""
+    day: str  # 日期 YYYY-MM-DD
+    logins: int = 0  # 登录次数
+    unique_users: int = 0  # 独立用户数
+    new_users: int = 0  # 当日新增用户数
+
+
+class DashboardStatsSchema(BaseModel):
+    """仪表盘统计数据"""
+    online_users: int = 0
+    total_users: int = 0
+    today_login_count: int = 0
+    today_unique_users: int = 0
+    week_user_created: int = 0
+    login_trend: list[LoginTrendItem] = []
+    recent_logins: list[RecentLoginItem] = []