feat: implement hybrid declarative state with automatic Nix sync

features/scripts/utils/nomarchy-welcome

@@ -61,13 +61,10 @@ echo "Step 4: Choose your monitor scaling"
 echo "Recommended: 'auto' for most screens, '2' for 4K/HiDPI."
 SCALE=$(gum choose "auto" "1" "1.25" "1.5" "2")
 if [[ -n "$SCALE" ]]; then
-    # Write to nested hyprland.scale key
-    STATE_DIR="$HOME/.config/nomarchy"
-    mkdir -p "$STATE_DIR"
-    TMP_FILE=\$(mktemp)
-    jq ".hyprland.scale = \"$SCALE\"" "\$STATE_FILE" > "\$TMP_FILE" && mv "\$TMP_FILE" "\$STATE_FILE"
+    nomarchy-state-write "hyprland.scale" "$SCALE"
 fi
 
+
 # Skip system-modifying steps in the Live ISO environment
 if [[ "$USER" == "nixos" ]]; then
     echo ""