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>

db/etl_feiqiu/migrations/2026-03-31__relation_index_task_stats.sql

@@ -0,0 +1,30 @@
+-- 关系指数表新增任务统计字段（2026-03-31）
+-- C: 历史总计字段
+
+BEGIN;
+
+ALTER TABLE dws.dws_member_assistant_relation_index
+    ADD COLUMN IF NOT EXISTS recall_created_total      INT NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS recall_completed_total     INT NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS follow_up_created_total    INT NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS follow_up_completed_total  INT NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS total_created              INT NOT NULL DEFAULT 0,
+    ADD COLUMN IF NOT EXISTS total_completed            INT NOT NULL DEFAULT 0;
+
+COMMENT ON COLUMN dws.dws_member_assistant_relation_index.recall_created_total IS '历史累计召回任务创建数';
+COMMENT ON COLUMN dws.dws_member_assistant_relation_index.recall_completed_total IS '历史累计召回任务完成数';
+COMMENT ON COLUMN dws.dws_member_assistant_relation_index.follow_up_created_total IS '历史累计回访任务创建数';
+COMMENT ON COLUMN dws.dws_member_assistant_relation_index.follow_up_completed_total IS '历史累计回访任务完成数';
+COMMENT ON COLUMN dws.dws_member_assistant_relation_index.total_created IS '历史累计任务创建总数';
+COMMENT ON COLUMN dws.dws_member_assistant_relation_index.total_completed IS '历史累计任务完成总数';
+
+COMMIT;
+
+-- ROLLBACK:
+-- ALTER TABLE dws.dws_member_assistant_relation_index
+--     DROP COLUMN IF EXISTS recall_created_total,
+--     DROP COLUMN IF EXISTS recall_completed_total,
+--     DROP COLUMN IF EXISTS follow_up_created_total,
+--     DROP COLUMN IF EXISTS follow_up_completed_total,
+--     DROP COLUMN IF EXISTS total_created,
+--     DROP COLUMN IF EXISTS total_completed;