feat: 累积功能变更 — 聊天集成、租户管理、小程序更新、ETL 增强、迁移脚本

包含多个会话的累积代码变更：
- backend: AI 聊天服务、触发器调度、认证增强、WebSocket、调度器最小间隔
- admin-web: ETL 状态页、任务管理、调度配置、登录优化
- miniprogram: 看板页面、聊天集成、UI 组件、导航更新
- etl: DWS 新任务（finance_area_daily/board_cache）、连接器增强
- tenant-admin: 项目初始化
- db: 19 个迁移脚本（etl_feiqiu 11 + zqyy_app 8）
- packages/shared: 枚举和工具函数更新
- tools: 数据库工具、报表生成、健康检查
- docs: PRD/架构/部署/合约文档更新

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/backend/app/schemas/admin_task_engine.py

@@ -0,0 +1,118 @@
+# -*- coding: utf-8 -*-
+"""P18 任务引擎运营看板 — Pydantic v2 Schema
+
+包含：转移日志、待审核任务、候选助教、参数管理等数据模型。
+"""
+
+from __future__ import annotations
+
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+
+# ---- 转移日志 ----
+
+class TransferLogItem(BaseModel):
+    id: int
+    site_id: int
+    site_name: str = ""
+    member_id: int
+    member_name: str = ""
+    from_assistant_id: int
+    from_assistant_name: str = ""
+    to_assistant_id: int
+    to_assistant_name: str = ""
+    transfer_reason: str | None = None
+    transfer_score: float | None = None
+    guard_checks: dict | None = None
+    created_at: datetime
+
+
+class TransferLogPage(BaseModel):
+    items: list[TransferLogItem]
+    total: int
+
+
+# ---- 待审核任务 ----
+
+class PendingReviewItem(BaseModel):
+    id: int
+    site_id: int
+    site_name: str = ""
+    member_id: int
+    member_name: str = ""
+    assistant_id: int
+    assistant_name: str = ""
+    task_type: str
+    task_type_label: str = ""
+    transfer_count: int = 0
+    priority_score: float | None = None
+    created_at: datetime
+
+
+class PendingReviewPage(BaseModel):
+    items: list[PendingReviewItem]
+    total: int
+
+
+class CandidateAssistant(BaseModel):
+    assistant_id: int
+    assistant_name: str = ""
+    rs_display: float = 0
+    ms_display: float = 0
+    ml_display: float = 0
+    transfer_score: float = 0
+    source: str = "pool"
+
+
+class CandidateListResponse(BaseModel):
+    candidates: list[CandidateAssistant]
+
+
+class ReassignRequest(BaseModel):
+    to_assistant_id: int
+
+
+class ReassignResponse(BaseModel):
+    success: bool
+    new_task_id: int | None = None
+
+
+class CloseRequest(BaseModel):
+    reason: str = Field(..., min_length=1, max_length=500)
+
+
+class CloseResponse(BaseModel):
+    success: bool
+
+
+# ---- 参数管理 ----
+
+class ConfigParam(BaseModel):
+    id: int
+    site_id: int | None = None
+    site_name: str | None = None
+    param_key: str
+    param_value: float
+    description: str | None = None
+    updated_at: datetime
+
+
+class ConfigParamList(BaseModel):
+    params: list[ConfigParam]
+
+
+class ConfigParamUpdate(BaseModel):
+    param_value: float
+
+
+class ConfigParamCreate(BaseModel):
+    site_id: int
+    param_key: str = Field(..., max_length=64)
+    param_value: float
+
+
+class ConfigParamResponse(BaseModel):
+    success: bool
+    id: int | None = None