Anti-cheat: server-sanction gate. Key protection now only activates on a server that also
runs this mod (or when you are the host). A server running the mod sends each connecting client a
ServerHello handshake RPC; a client only protects keys if it received that Hello. On any server
without the mod, no Hello arrives, protection stays off, and keys consume normally — so the DLL
can't be carried to another server as a portable cheat. The gate is not client-configurable.
Resets sanction state on disconnect / new connection so it can never leak between servers.
1.0.0
Initial release.
Swamp/Crypt Key ($item_cryptkey) is no longer consumed when opening a Sunken Crypt gate.
