fix(system): enable uwsm and fix session detection to allow VM login

- Enable programs.uwsm for session management.
- Improve SDDM theme session detection logic to be case-insensitive and more robust.
- Perform a global cleanup of 'Nnomarchy' and 'org.nnomarchy' typos across all scripts and configurations.

bin/appearance/nomarchy-theme-update

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-for dir in ~/.config/nnomarchy/themes/*/; do
+for dir in ~/.config/nomarchy/themes/*/; do
   if [[ -d $dir ]] && [[ ! -L ${dir%/} ]] && [[ -d $dir/.git ]]; then
     echo "Updating: $(basename "$dir")"
     git -C "$dir" pull