Document one-link server install in README

README.md

@@ -15,6 +15,26 @@ If you don't have it yet, grab the latest **Prism Launcher** here:
 4. (First launch) Allocate 8 GB RAM in **Settings → Java → Memory**. Requires Java 21.
 5. The multiplayer server `reaperofveriod.nl` is pre-listed — just hit **Multiplayer** and join.
 
+## Server install (Debian 13) — one link
+
+Run this on the server box (sudo/root; needs internet). It installs Java 21,
+NeoForge 21.1.248, all 59 server-side mods (sha1-verified), and writes
+`eula.txt` + `server.properties` + an 8 GB `run.sh`:
+
+```sh
+curl -sSL https://git.reaperofveriod.nl/ReaperOfVeriod/Reaper-s-Sky/raw/branch/main/server/install.sh | sh
+```
+
+Then start it (keep it running with tmux/screen):
+
+```sh
+tmux new -s mc
+cd ~/reaper-sky-server && ./run.sh
+```
+
+The world generates on first boot — wait for `Done (...)` and join at
+`reaperofveriod.nl`. Full details in [`server/README.md`](server/README.md).
+
 ## What's inside
 
 <details open>