After you've run the weather app at least once through telnet, you can start it from the kobo tweaks plugin by adding these lines to koboteaks.ini (in the .kobo folder on your Touch):
Code:
[CustomCommands]
Reboot=tweaks.executeSystemCmd(\"/mnt/onboard/.python/weather.sh\")
And also add this line to weather.sh (in the .python folder) right after the first line:
And yes, once you start the weather app you can't get back to the main Kobo interface without resetting the device.