fix(ops): harden cold-start schedule recovery

apps/api/src/services/k3s_monitor_service.py

@@ -34,8 +34,12 @@ logger = structlog.get_logger(__name__)
 # 台北時區
 TZ_TAIPEI = ZoneInfo("Asia/Taipei")
 
-# Prometheus 端點
-PROMETHEUS_URL = "http://192.168.0.121:30090"
+# Prometheus endpoint.
+#
+# 2026-05-05 Codex: do not pin this report job to a K3s worker NodePort.
+# Production already injects PROMETHEUS_URL from ConfigMap, currently the
+# Docker Prometheus on 110. This keeps reboot recovery independent of 121.
+PROMETHEUS_URL = settings.PROMETHEUS_URL.rstrip("/")
 
 # kube-state-metrics 查詢
 PROM_QUERIES = {
@@ -215,7 +219,7 @@ class K3sMonitorService:
 
             # 發送訊息
             formatted = status.format()
-            result = await gateway.send_message(formatted)
+            result = await gateway.send_text(formatted)
 
             if result:
                 logger.info("k3s_daily_report_sent", date=status.report_date)

apps/api/src/services/weekly_report_service.py

@@ -244,7 +244,7 @@ class WeeklyReportService:
 
             # 發送訊息
             formatted = report.format()
-            result = await gateway.send_message(formatted)
+            result = await gateway.send_text(formatted)
 
             if result:
                 logger.info("weekly_report_sent", week=report.week_range)