feat(hyprland): implement declarative monitor scaling and add scale picker to welcome wizard

features/scripts/utils/nomarchy-welcome

@@ -56,6 +56,18 @@ if [[ -n "$POSITION" ]]; then
     nomarchy-state-write panelPosition "$POSITION"
 fi
 
+# 4. Select monitor scaling
+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 = \"$SCALE\"" "\$STATE_FILE" > "\$TMP_FILE" && mv "\$TMP_FILE" "\$STATE_FILE"
+fi
+
 # Skip system-modifying steps in the Live ISO environment
 if [[ "$USER" == "nixos" ]]; then
     echo ""