docs: update README and SKILL.md - document update system, rename binaries

README.md

@@ -31,8 +31,8 @@ irm https://raw.githubusercontent.com/agent-helios/helios-remote/master/scripts/
 ```
 AI Agent
    │
-   ▼  remote CLI
-helios-server ──WebSocket── helios-client (Windows)
+   ▼  helios-remote-cli
+helios-remote-relay ──WebSocket── helios-remote-client (Windows)
 ```
 
 1. The **Windows client** connects to the relay server via WebSocket and registers with its device label.
@@ -62,11 +62,22 @@ remote clipboard-get <device>                     # get clipboard text
 remote clipboard-set <device> <text>              # set clipboard text
 remote upload <device> <local> <remote>           # upload file to device
 remote download <device> <remote> <local>         # download file from device
-remote version <device>                           # compare relay/helios/client commits
+remote version <device>                           # compare latest/relay/cli/client commits
+remote update <device>                            # update all components to latest version
 remote logs <device>                              # fetch last 20 lines of client log (default)
 remote logs <device> --lines 200                  # custom line count
 ```
 
+### Update System
+
+`remote update <device>` checks `version.json` on the download server for the latest available commit and updates any component that's behind:
+
+- **Relay** — downloads new binary, replaces itself, restarts via systemd
+- **Client** — downloads new binary, replaces itself, relaunches automatically
+- **CLI** — downloads new binary, replaces itself, re-executes the update command
+
+CI publishes new binaries after every push to `master` but does **not** auto-restart the relay. Updates only happen when explicitly triggered via `remote update`.
+
 ---
 
 ## Server Setup