fix(backend): 后端日志走查发现 2 个 schema 不一致 bug

- coach_service.py:594 _build_task_groups SQL 查 biz.notes.is_pinned
  但表无该字段 → UndefinedColumn 抛错 + 事务终止 + 级联 _build_notes
  / _build_history_months 全部失败(InFailedSqlTransaction)
  修复:删除 is_pinned 列,pinned 降级 False(置顶功能未落库,
  不影响核心备注展示)。

- customer_service.py:1088 _get_consumption_month_summary SQL 用错
  3 个字段(从 v_dwd_assistant_service_log 复制粘贴未适配
  v_dwd_settlement_head 字段名差异):
    sh.tenant_member_id → sh.member_id
    sh.is_delete = 0 → 删除(view 已过滤已撤销订单)
    sh.settle_time → sh.create_time
  → 高频 UndefinedColumn,小程序 customer-records 月度 rechargeTotal
  恒返回 0,consumption60D 恒返回 null。

走查覆盖(MCP):
- 小程序 customer-records 调 /api/xcx/customers/{id}/consumption-records
  修前: rechargeTotal=0, consumption60D=null
  修后: rechargeTotal=1009.08, consumption60D=7758.24, daysSinceVisit=31
       visitCount=1, consumeTotal=384.02 全部 PASS

发现来源:tmp/20260505_backed_LOG.txt 后端日志 grep
ERROR/Traceback 反复出现 UndefinedColumn。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/backend/app/services/customer_service.py

@@ -1085,15 +1085,16 @@ def _get_consumption_month_summary(
                 consume_total = float(row[1]) if row[1] else 0.0
 
             # 充值总额（从 settlement_head 的 recharge_card_amount）
+            # 2026-05-05: 修字段名,view v_dwd_settlement_head 列名为 member_id / create_time
+            # (不是 tenant_member_id / settle_time);已撤销订单 view 已过滤,无需 is_delete 条件
             cur.execute(
                 """
                 SELECT COALESCE(SUM(sh.recharge_card_amount), 0)
                 FROM app.v_dwd_settlement_head sh
-                WHERE sh.tenant_member_id = %s
-                  AND sh.is_delete = 0
+                WHERE sh.member_id = %s
                   AND sh.recharge_card_amount > 0
-                  AND sh.settle_time >= %s::timestamptz
-                  AND sh.settle_time < %s::timestamptz
+                  AND sh.create_time >= %s::timestamptz
+                  AND sh.create_time < %s::timestamptz
                 """,
                 (customer_id, start_date, end_date),
             )