AmneziaWG and Xray: optimal configuration

Configuration only: choosing parameters, writing and validating server/client configs and keys. Installation, Docker, systemd, VPS prep and launch are out of scope.

Not here: OpenWrt AWG UCI/LuCI → amneziawg-openwrt-guide; router-wide sing-box → podkop-openwrt-guide; Linux policy routing → linux-routing.

Procedure: choosing the optimal config