fix: installer banner version and admin password display

- Fix version banner showing 0.1.0 instead of 0.2.0
- Fix admin password line printing "<auto-generated>true" when
  GENERATED_PASS=true due to broken parameter expansion — replace
  with explicit if/else

scripts/install.sh

@@ -28,7 +28,7 @@ cat <<'EOF'
  Open-Source Web Hosting Control Panel
 EOF
 echo -e "${RESET}"
-echo -e " Version  : ${BOLD}0.1.0${RESET}"
+echo -e " Version  : ${BOLD}0.2.0${RESET}"
 echo -e " GitHub   : ${BOLD}https://github.com/NixReaper/nixpanel-server${RESET}"
 echo -e " NixServer: ${BOLD}https://<your-ip>:2087${RESET}"
 echo -e " NixClient: ${BOLD}https://<your-ip>:2083${RESET}"
@@ -121,7 +121,11 @@ echo -e "${BOLD}Installation summary:${RESET}"
 echo "  Install directory : $INSTALL_DIR"
 echo "  Admin username    : $ADMIN_USER"
 echo "  Admin email       : $ADMIN_EMAIL"
-echo "  Admin password    : ${GENERATED_PASS:+<auto-generated, shown at end>}${GENERATED_PASS:-$ADMIN_PASS}"
+if [[ "$GENERATED_PASS" == "true" ]]; then
+  echo "  Admin password    : <auto-generated, shown at end>"
+else
+  echo "  Admin password    : $ADMIN_PASS"
+fi
 echo ""
 read -r -p "Continue? [Y/n] " CONFIRM
 CONFIRM="${CONFIRM:-Y}"