Check for Zapret2 installation in zapret_key function

Added a check for existing Zapret2 installation before proceeding with installation.

Zapret-Manager.sh

@@ -431,7 +431,7 @@ echo "$STRATEGY" | sed '/^$/d' >> "$CONF"; echo "'" >> "$CONF"; add_ports_if_mis
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 # Zapret под ключ
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-zapret_key() { clear; echo -e "${MAGENTA}Удаление, установка и настройка Zapret${NC}\n"; get_versions; uninstall_zapret "1"; install_Zapret "1"
+zapret_key() { if [ -f /etc/init.d/zapret2 ]; then echo -e "\n${RED}Установлен ${NC}Zapret2${RED}!${NC}"; echo -e "${YELLOW}Установка ${NC}Zapret${YELLOW} невозможна!${NC}\n"; PAUSE; return 1; fi; clear; echo -e "${MAGENTA}Удаление, установка и настройка Zapret${NC}\n"; get_versions; uninstall_zapret "1"; install_Zapret "1"
 [ ! -f /etc/init.d/zapret ] && { echo -e "${RED}Zapret не установлен!${NC}\n"; PAUSE; return; }; install_strategy $STR_VERSION_AUTOINSTALL "1"; echo -e "\n${MAGENTA}Редактируем hosts${NC}\n${CYAN}Добавляем домены в${NC} hosts"
 hosts_add "$ALL_BLOCKS"; echo -e "${GREEN}Домены добавлены в ${NC}hosts${GREEN}!${NC}\n"; Discord_menu "1"; echo -e "${MAGENTA}Настраиваем стратегию для игр${NC}"; fix_GAME "1"; echo -e "Zapret ${GREEN}установлен и настроен!${NC}\n"; PAUSE; }
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