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/routers/etl_status.py

@@ -18,7 +18,7 @@ from fastapi import APIRouter, Depends, HTTPException, status
 from psycopg2 import OperationalError
 
 from app.auth.dependencies import CurrentUser, get_current_user
-from app.database import get_connection, get_etl_readonly_connection
+from app.database import get_connection, get_etl_global_readonly_connection
 from app.schemas.etl_status import CursorInfo, RecentRun
 
 logger = logging.getLogger(__name__)
@@ -40,7 +40,8 @@ async def list_cursors(
     查询 ETL 数据库中的 meta.etl_cursor 表。
     如果该表不存在，返回空列表而非报错。
     """
-    conn = get_etl_readonly_connection(user.site_id)
+    # CHANGE 2026-03-23 | 系统管理后台全局视角，不按门店过滤
+    conn = get_etl_global_readonly_connection()
     try:
         with conn.cursor() as cur:
             # CHANGE 2026-02-15 | 对齐新库 etl_feiqiu 六层架构：etl_admin → meta
@@ -60,9 +61,10 @@ async def list_cursors(
 
             cur.execute(
                 """
-                SELECT task_code, last_fetch_time, record_count
-                FROM meta.etl_cursor
-                ORDER BY task_code
+                SELECT t.task_code, c.last_start, c.last_end
+                FROM meta.etl_cursor c
+                JOIN meta.etl_task t ON c.task_id = t.task_id
+                ORDER BY t.task_code
                 """
             )
             rows = cur.fetchall()
@@ -70,8 +72,8 @@ async def list_cursors(
         return [
             CursorInfo(
                 task_code=row[0],
-                last_fetch_time=str(row[1]) if row[1] is not None else None,
-                record_count=row[2],
+                last_start=str(row[1]) if row[1] is not None else None,
+                last_end=str(row[2]) if row[2] is not None else None,
             )
             for row in rows
         ]
@@ -99,16 +101,16 @@ async def list_recent_runs(
     conn = get_connection()
     try:
         with conn.cursor() as cur:
+            # CHANGE 2026-03-23 | 系统管理后台全局视角，不按门店过滤
             cur.execute(
                 """
                 SELECT id, task_codes, status, started_at,
                        finished_at, duration_ms, exit_code
                 FROM task_execution_log
-                WHERE site_id = %s
                 ORDER BY started_at DESC
                 LIMIT %s
                 """,
-                (user.site_id, _RECENT_RUNS_LIMIT),
+                (_RECENT_RUNS_LIMIT,),
             )
             rows = cur.fetchall()