Serve modpack.zip via Caddy static file, not Gitea (50MB cap)

modpack-final.zip is 78MB, well over Gitea's upload limit. Served
directly from Caddy's existing static/ mount instead (path-routed
within the minecraft.mivanchenko.de block, alongside the BlueMap
failover) - no new container or mount needed. install.sh/install.ps1
MODPACK_URL updated accordingly; install scripts themselves stay on
Gitea since they're small text files. Verified full byte-exact
download end-to-end. Also drops the stale "moving to the venue"
comments now that the server is permanently on mivanchenko.de.

install.sh

@@ -8,10 +8,10 @@
 set -euo pipefail
 
 # ---- EDIT ME before hosting ----
-HOST_URL="https://git.mivanchenko.de/mivanchenko/mc-lan-party/raw/branch/main"  # Gitea raw-file base URL
-MODPACK_URL="$HOST_URL/modpack.zip"     # exported Prism instance folder, zipped, committed to the repo (see HOSTING.md)
+HOST_URL="https://git.mivanchenko.de/mivanchenko/mc-lan-party/raw/branch/main"  # Gitea raw-file base URL, for this script + install.ps1 (small text files)
+MODPACK_URL="https://minecraft.mivanchenko.de/modpack.zip"  # served directly by Caddy (static/ mount), NOT Gitea — modpack.zip is well over Gitea's 50MB upload cap
 INSTANCE_NAME="LANParty"                # must match the top-level folder name inside modpack.zip
-SERVER_ADDR="minecraft.mivanchenko.de:25565"  # DNS name, not a raw IP — repoint the A record to whichever box is running the server (prep machine now, venue box at party time) instead of rebuilding modpack.zip. See HOSTING.md "Moving the server to the venue".
+SERVER_ADDR="minecraft.mivanchenko.de:25565"  # always-on homelab box, same address for prep and the actual party
 GH_REPO="unmojang/FjordLauncherUnlocked" # fallback if hero-persson's fork disappears; see note below
 # ---------------------------------