补充 release SpacetimeDB 健康检查与巡检防回退

增加 SpacetimeDB 阶段化健康检查与 /readyz 阶段输出
记录 procedure/reducer/read 失败的阶段和耗时
补充 release 健康巡检 systemd timer 与生产 ops 预检
同步 API 构建部署、provision 脚本和运维文档

deploy/systemd/genarrative-health-patrol.timer

@@ -0,0 +1,13 @@
+[Unit]
+Description=Run Genarrative Production Health Patrol
+
+[Timer]
+OnBootSec=2min
+OnCalendar=*-*-* *:0/5:00
+Persistent=true
+RandomizedDelaySec=30
+AccuracySec=30s
+Unit=genarrative-health-patrol.service
+
+[Install]
+WantedBy=timers.target