Hopefully this is the last time I have to implement the backend for this - I'm going to reuse the code for this from now on. (The display, however, could definitely use some work.)
You don't have to go through the same ordeal. Get the source code from my Codeberg repo - it's MIT licensed and GenAI-free.
You can also follow the plugin development on my:
Mastodon
Bluesky
Thanks for sharing the source. Two small things I noticed reading settings_handler.gd. CONFIG_FILE points at res://config/config.ini, and res:// is read-only in exported builds, so saving rebinds would probably fail outside the editor. user:// would be safer. Also, storing mute as a negative volume means a volume of 0 reads back as muted, which might be what you want, but worth knowing. The regex skip and include lists for leaving out the ui_ actions are a neat touch.