refactor: DevTools → ethend 重命名 + 加入生产环境

- 目录 devtools/ → ethend/
- CLI 脚本 devtools.sh/.bat → ethend.sh/.bat
- 环境变量 DEVTOOLS_PORT → ETHEND_PORT
- docker-compose.yml 新增 ethend 服务（生产部署）
- 同步更新全部文档、注释和配置文件

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docker-compose.yml

@@ -143,6 +143,27 @@ services:
       IOT_DEBUG_PORT: "8083"
     restart: unless-stopped
 
+  # ========== 管理控制台 ==========
+  ethend:
+    container_name: cyrene_ethend
+    build:
+      context: ./ethend
+      dockerfile: Dockerfile
+    environment:
+      ETHEND_PORT: "${ETHEND_PORT:-9090}"
+      GATEWAY_URL: http://gateway:8080
+      AI_CORE_URL: http://ai-core:8081
+      MEMORY_SERVICE_URL: http://memory-service:8091
+      VOICE_SERVICE_URL: http://voice-service:8093
+      IOT_DEBUG_SERVICE_URL: http://iot-debug-service:8083
+      ADMIN_USERNAME: ${ADMIN_USERNAME:-admin}
+      ADMIN_PASSWORD: ${ADMIN_PASSWORD}
+    ports:
+      - "${ETHEND_PORT:-9090}:9090"
+    depends_on:
+      - gateway
+    restart: unless-stopped
+
   # ========== 基础设施 ==========
   postgres:
     container_name: cyrene_postgres