docs(readme): document network mode

README.md

@@ -23,6 +23,30 @@ agenthub status --update
 - Codex CLI
 - Kimi Code CLI
 
+## Network Mode
+
+AgentHub can expose a project to other machines on the same network.
+
+On the host machine (e.g. Mac):
+
+```bash
+cd my-project
+agenthub init
+agenthub server start --host 0.0.0.0 --port 3377
+```
+
+On another machine (e.g. Windows):
+
+```powershell
+$env:AGENTHUB_SERVER="http://<mac-ip>:3377"
+agenthub task create --title "Windows task" --role implementer
+agenthub status
+```
+
+Use `--server http://<ip>:3377` on each command instead of the environment variable if you prefer.
+
+`init` always runs locally on the host machine.
+
 ## License
 
 MIT