Update README: we_monitor_gui system command after client install

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -178,7 +178,8 @@ chmod +x install.sh
 ./install.sh
 ```
 
-This creates `client/.venv` and writes a `client/run.sh` launcher.
+This creates `client/.venv`, writes a `client/run.sh` launcher, and installs
+`~/.local/bin/we_monitor_gui` so the GUI is available system-wide.
 
 ### Manual start
 
@@ -190,7 +191,7 @@ python client/gui_client.py
 ### GUI client (`client/gui_client.py`)
 
 ```bash
-client/run.sh        # after install.sh
+we_monitor_gui       # after install.sh
 ```
 
 Dark-theme PyQt5 application.  Three tabs: **Connector**, **Dashboard**,