Replace Chunky with Distant Horizons server-side Full-mode pregen

Chunky + DH-on-server crashes on first chunk load (confirmed open
upstream bug, DH GitLab #1329). DH's own INTERNAL_SERVER generation
mode does the same pregen job without the conflict, plus streams
accurate LOD to clients automatically (no manual flying pass needed).
Corrects Vivecraft/CPM/ViveCraft Compat to both-sides (needed for
other players to see VR body movement, not just client-only). Fixes
lazymc.toml duration-string bug (sleep_after wants an integer, not
"5m"). Replaces the screenshot-derived mod list with ground truth
from the actual exported client zip.

server/setup-server.sh

@@ -15,7 +15,7 @@ FORGE_MC_VERSION="1.20.1"
 FORGE_BUILD="47.4.28"                 # current recommended build for 1.20.1 — check files.minecraftforge.net if this is stale
 MC_PUBLIC_PORT=25565                  # what players connect to (lazymc listens here)
 MC_INTERNAL_PORT=25566                # real server listens here, lazymc proxies to it
-SLEEP_AFTER="5m"                      # idle time before lazymc stops the real server
+SLEEP_AFTER=300                       # idle seconds before lazymc stops the real server (this lazymc build wants a plain integer, not "5m")
 MIN_RAM="2G"
 MAX_RAM="6G"                          # 5-8 players; see ../HOSTING.md sizing table — bump to 8G (9-12p) or 10-12G (13-15p)
 # ------------------
@@ -82,8 +82,8 @@ wake_whitelist = false
 address = "0.0.0.0:${MC_PUBLIC_PORT}"
 
 [time]
-sleep_after = "${SLEEP_AFTER}"
-minimum_online_time = "1m"
+sleep_after = ${SLEEP_AFTER}
+minimum_online_time = 60
 
 [motd]
 sleeping = "☀ Server is asleep, join to wake it up"