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/services/task_expiry.py

@@ -11,6 +11,7 @@
 import json
 import logging
 
+from app.services.runtime_context import as_runtime_now_param, task_runtime_filter
 from app.trace.decorators import trace_service
 
 logger = logging.getLogger(__name__)
@@ -71,32 +72,42 @@ def run() -> dict:
 
     conn = _get_connection()
     try:
-        # 查询所有已过期的 active 任务
+        # 查询所有已过期的 active 任务。沙箱模式按业务时间判断，并只处理当前运行实例。
+        expired_tasks = []
         with conn.cursor() as cur:
-            cur.execute(
-                """
-                SELECT id, task_type
-                FROM biz.coach_tasks
-                WHERE expires_at IS NOT NULL
-                  AND expires_at < NOW()
-                  AND status = 'active'
-                """
-            )
-            expired_tasks = cur.fetchall()
+            cur.execute("SELECT site_id FROM biz.sites WHERE is_active = true")
+            site_ids = [row[0] for row in cur.fetchall()]
+            for site_id in site_ids:
+                runtime_now = as_runtime_now_param(site_id, conn=conn)
+                runtime_clause, runtime_params = task_runtime_filter(site_id, conn=conn)
+                cur.execute(
+                    f"""
+                    SELECT id, task_type, site_id
+                    FROM biz.coach_tasks
+                    WHERE site_id = %s
+                      {runtime_clause}
+                      AND expires_at IS NOT NULL
+                      AND expires_at < %s
+                      AND status = 'active'
+                    """,
+                    [site_id, *runtime_params, runtime_now],
+                )
+                expired_tasks.extend(cur.fetchall())
         conn.commit()
 
         # 逐条处理，每条独立事务
-        for task_id, task_type in expired_tasks:
+        for task_id, task_type, site_id in expired_tasks:
             try:
+                runtime_now = as_runtime_now_param(site_id, conn=conn)
                 with conn.cursor() as cur:
                     cur.execute("BEGIN")
                     cur.execute(
                         """
                         UPDATE biz.coach_tasks
-                        SET status = 'inactive', updated_at = NOW()
+                        SET status = 'inactive', updated_at = %s
                         WHERE id = %s AND status = 'active'
                         """,
-                        (task_id,),
+                        (runtime_now, task_id),
                     )
                     _insert_history(
                         cur,