fix(qa): comprehensive out-of-the-box audit and repair

- Fix critical bash dynamic scoping bug in install.sh (Impermanence/Form Factor).
- Polished Live ISO with auto-login and passwordless sudo.
- Repurposed nomarchy-toggle-suspend to directly execute systemctl suspend.
- Updated nomarchy-launch-wifi to use nmtui in alacritty.
- Optimized nomarchy-welcome to avoid redundant rebuilds via --no-update flag.
- Enabled nomarchy-welcome in Hyprland autostart.
- Wrapped Live ISO-modifying steps in welcome wizard to prevent failures.
- Removed obsolete hardware auto-detection from nomarchy-on-boot.
- Hardened script doc generator against false-positive wildcard tokens.
- Regenerated docs/SCRIPTS.md and updated docs/ROADMAP.md.

themes/engine/scripts/nomarchy-theme-set

@@ -2,12 +2,17 @@
 set -e
 
 # Set the system theme declaratively.
-# Usage: nomarchy-theme-set <theme-name>
+# Usage: nomarchy-theme-set <theme-name> [--no-update]
 
 THEME_NAME="$1"
+NO_UPDATE=false
+
+if [[ "${2:-}" == "--no-update" ]]; then
+  NO_UPDATE=true
+fi
 
 if [[ -z $THEME_NAME ]]; then
-  echo "Usage: nomarchy-theme-set <theme-name>"
+  echo "Usage: nomarchy-theme-set <theme-name> [--no-update]"
   exit 1
 fi
 
@@ -48,6 +53,12 @@ if [ -d "$BG_DIR" ]; then
 fi
 
 echo "Theme set to $THEME_NAME. Applying changes with nomarchy-env-update..."
+
+if [[ "$NO_UPDATE" == "true" ]]; then
+  echo "Skipping nomarchy-env-update due to --no-update flag."
+  exit 0
+fi
+
 nomarchy-env-update
 
 nomarchy-theme-set-templates