docs: update dependency and sample config notes

README.md

@@ -27,20 +27,21 @@ Supported actions:
 
 ## Requirements
 
-Required:
+Required locally:
 
 - `bash`
 - `ssh`
 - `whiptail`
-- `sed`
-- `tee`
-- core utilities such as `rm` and `touch`
+- core utilities such as `cat`, `tee`, `rm`, `touch`, and `mv`
 
 Optional log viewer:
 
 - `$EDITOR` if it points to an installed command
 - otherwise one of: `nano`, `vi`, `less`
 
+Remote hosts must also provide the commands needed by the configured actions, such as:
+`apt-get`, `yum`, `pkg`, `pacman`, `apk`, `docker`, `docker compose`, or `reboot`.
+
 ## Install
 
 ### Install the executable