WTH can we edit yaml files in the UI?

Alot of component configurations and sensors have to be configured using yaml still. It would be nice to be able to edit, check, test and save yaml files for simple things like sensors.

Hi,
You can - just install the File Editor Add-On - it is part of CORE and happily opens all config files, gives YAML syntax checking / colouring, and has menu items to restart parts of HASS:

I’ve been using this for quite a while, and only drop into the command line (also via a web shell Add-On) for more serious file admin.

Enjoy,

James

Or Studio Code Server add-on

and what shall I do in a Container Configuration - no add-ons…?

Install as Docker Container and integrate as panel_iframe

Install visual studio code on windows machine and remote edit