docs: document gateway deployment workflow

- explain the separate control-plane and data-plane listeners
- document revision activation and raw binary invocation
- clarify restart restoration and actor-memory semantics

README.md

@@ -23,6 +23,23 @@ wit/                     Wasmeld WIT package 源码
 cargo +stable run -p wasmeld-console
 ```
 
+后端会启动本地管理 API `127.0.0.1:8080` 和公开数据面
+`0.0.0.0:8081`。注册 Component 后，通过管理 API 激活一个版本：
+
+```bash
+curl -X POST http://127.0.0.1:8080/api/v1/deployments/echo/activate \
+  -H 'Content-Type: application/json' \
+  -d '{"revision":"0.1.0"}'
+```
+
+客户端只访问 Gateway，并以原始二进制请求调用活动版本：
+
+```bash
+curl http://127.0.0.1:8081/v1/services/echo/invoke \
+  -H 'Content-Type: application/octet-stream' \
+  --data-binary 'hello'
+```
+
 管理面：
 
 ```bash