chore: migrate omarchy state from ~/.config to ~/.local/state

Move all omarchy runtime state (themes, backgrounds, current theme)
from ~/.config/omarchy/current to ~/.local/state/omarchy/current
to keep the config dir free of generated files. Add mise task for
recreating symlinks and update credential helpers for tea.

config/mako/config

@@ -37,4 +37,4 @@ on-button-left=exec sh -c 'omarchy-notification-dismiss "Install Dictation with
 max-icon-size=80
 format=<b>%s</b>\n%b
 
-include=~/.config/omarchy/current/theme/mako.ini
+include=~/.local/state/omarchy/current/theme/mako.ini