feat: 2026-04-15~05-02 累积变更基线 — AI 重构 + Runtime Context + DWS 修复

涵盖（每条对应已存的审计记录）：
- AI 模块拆分：apps/backend/app/ai/apps -> prompts/（8 个 APP + app2a 派生）
  audit: 2026-04-20__ai-module-complete.md
- admin-web AI 管理套件：AIDashboard / AIOperations / AIRunLogs / AITriggers / TriggerManager
  audit: 2026-04-21__admin-web-ai-management-suite.md
- App2 财务洞察 prompt v3 -> v5.1 + 小程序 AI 接入（chat / board-finance）
  audit: 2026-04-22__app2_prompt_v5_1_and_miniprogram_ai_insight.md
- App2 prewarm 全过滤器 + AI 触发器 cron reschedule
  audit: 2026-04-21__app2-finance-prewarm-all-filters.md
  migration: 20260420_ai_trigger_jobs_and_app2_prewarm.sql / 20260421_app2_prewarm_cron_reschedule.sql
- AppType 联合类型对齐 + adminAiAppTypes.test.ts
  audit: 2026-04-30__admin_web_ai_app_type_alignment.md
- DashScope tokens_used 提取修复
  audit: 2026-04-30__backend_dashscope_tokens_used_extraction.md
- App3 线索完整详情 prompt
  audit: 2026-05-01__backend_app3_full_detail_prompt.md
- Runtime Context 沙箱（5-1~5-2 主线）：
  - 后端 schema/service + admin_runtime_context / xcx_runtime_clock 两个 router
  - admin-web RuntimeContext.tsx + miniprogram runtime-clock.ts
  - migration: 20260501__runtime_context_sandbox.sql
  - tools/db/verify_admin_web_sandbox.py + verify_sandbox_end_to_end.py
  - database/changes: 7 份 sandbox_* 验证报告
- 飞球 DWS 修复：finance_area_daily 区域汇总 + task_engine 调整
  + RLS 视图业务日上界（migration 20260502 + scripts/ops/gen_rls_business_date_migration.py）

合规：
- .gitignore 启用 tmp/ 排除
- 不入仓：apps/etl/connectors/feiqiu/.env（API_TOKEN secret，本地修改保留）

待验证清单：
- docs/audit/changes/2026-05-04__cumulative_baseline_pending_verification.md
  每个主题的功能完整性 / 上线验证几乎都未收口，按优先级 P0~P3 逐一处理

apps/backend/app/ai/data_fetchers/assistant_data.py

@@ -58,10 +58,16 @@ def _fetch_assistant_info_sync(site_id: int, assistant_id: int) -> dict[str, Any
         conn = get_etl_readonly_connection(site_id)
         # RLS 隔离 + 语句超时（get_etl_readonly_connection 的 SET LOCAL 在 commit 后失效，
         # 需在查询事务中重新设置）
+        # CHANGE 2026-05-02 | 同时下发 app.current_business_date，供 RLS 视图业务日上界裁剪
+        from app.services.runtime_context import as_runtime_today_param as _rt_today
+        _ref_date = _rt_today(site_id)
         with conn.cursor() as cur:
             cur.execute(
                 "SET LOCAL app.current_site_id = %s", (str(site_id),)
             )
+            cur.execute(
+                "SET LOCAL app.current_business_date = %s", (_ref_date.isoformat(),)
+            )
             cur.execute(
                 "SET LOCAL statement_timeout = %s",
                 (f"{FDW_QUERY_TIMEOUT_SEC * 1000}",),
@@ -86,11 +92,12 @@ def _fetch_assistant_info_sync(site_id: int, assistant_id: int) -> dict[str, Any
             level = row[1] or ""
             hire_date = row[2]
 
-            # 计算工龄
+            # 计算工龄（CHANGE 2026-05-02 | 用 business_date 替代 today，沙箱按当时工龄）
+            from app.services.runtime_context import as_runtime_today_param
+            ref_date = as_runtime_today_param(site_id)
             tenure_months = 0
             if hire_date and isinstance(hire_date, date):
-                today = date.today()
-                tenure_months = (today.year - hire_date.year) * 12 + (today.month - hire_date.month)
+                tenure_months = (ref_date.year - hire_date.year) * 12 + (ref_date.month - hire_date.month)
 
             # 绩效数据
             # ⚠️ 列名映射: monthly_customers 不存在（用 0 占位），performance_tier→tier_name
@@ -184,10 +191,16 @@ def _fetch_service_history_sync(
         conn = get_etl_readonly_connection(site_id)
         # RLS 隔离 + 语句超时（get_etl_readonly_connection 的 SET LOCAL 在 commit 后失效，
         # 需在查询事务中重新设置）
+        # CHANGE 2026-05-02 | 同时下发 app.current_business_date，供 RLS 视图业务日上界裁剪
+        from app.services.runtime_context import as_runtime_today_param as _rt_today2
+        _ref_date_outer = _rt_today2(site_id)
         with conn.cursor() as cur:
             cur.execute(
                 "SET LOCAL app.current_site_id = %s", (str(site_id),)
             )
+            cur.execute(
+                "SET LOCAL app.current_business_date = %s", (_ref_date_outer.isoformat(),)
+            )
             cur.execute(
                 "SET LOCAL statement_timeout = %s",
                 (f"{FDW_QUERY_TIMEOUT_SEC * 1000}",),
@@ -197,6 +210,9 @@ def _fetch_service_history_sync(
             # is_trash=false→is_delete=0, service_date→create_time,
             # duration_minutes→real_use_seconds/60, items_sum→ledger_amount,
             # room_name→site_table_id, is_pd→(order_assistant_type=1)
+            # CHANGE 2026-05-02 | 用 business_date 替代 CURRENT_DATE，沙箱不读「未来」服务记录
+            from app.services.runtime_context import as_runtime_today_param
+            ref_date = as_runtime_today_param(site_id)
             cur.execute(
                 """
                 SELECT
@@ -209,10 +225,11 @@ def _fetch_service_history_sync(
                 WHERE site_assistant_id = %s
                   AND tenant_member_id = %s
                   AND is_delete = 0
-                  AND create_time >= (CURRENT_DATE - INTERVAL '%s months')
+                  AND create_time >= (%s::date - (INTERVAL '1 month' * %s))
+                  AND create_time <  (%s::date + INTERVAL '1 day')
                 ORDER BY create_time DESC
                 """,
-                (assistant_id, member_id, months),
+                (assistant_id, member_id, ref_date, months, ref_date),
             )
             columns = [desc[0] for desc in cur.description]
             rows = cur.fetchall()