完善外部生成Worker动态扩缩容

新增外部生成controller进程角色与systemd服务

补齐队列统计procedure与spacetime-client绑定

更新生产部署脚本、健康巡检和server provision的worker/controller口径

新增容器worker smoke脚本并同步运维文档与团队记忆

deploy/container/docker-compose.loadtest.yml

@@ -2,7 +2,7 @@ name: genarrative-container-loadtest
 
 services:
   spacetimedb:
-    image: clockworklabs/spacetime:v2.4.1
+    image: ${GENARRATIVE_CONTAINER_SPACETIME_IMAGE:-clockworklabs/spacetime:v2.4.1}
     user: root
     command:
       [
@@ -44,7 +44,7 @@ services:
     cpus: "2.0"
     mem_limit: 1g
     env_file:
-      - ./api-server.env
+      - ${GENARRATIVE_CONTAINER_API_ENV_FILE:-./api-server.env}
     environment:
       GENARRATIVE_API_HOST: 0.0.0.0
       GENARRATIVE_API_PORT: 8082
@@ -77,7 +77,7 @@ services:
     cpus: "2.0"
     mem_limit: 1g
     env_file:
-      - ./api-server.env
+      - ${GENARRATIVE_CONTAINER_API_ENV_FILE:-./api-server.env}
     environment:
       GENARRATIVE_PROCESS_ROLE: external-generation-worker
       GENARRATIVE_TRACKING_OUTBOX_DIR: /var/lib/genarrative/tracking-outbox-worker