refactor(ingress): rename packwiz.* subdomain to pack.*

Rename the pack-serving vhost/alias from packwiz.${BASE_DOMAIN} to
pack.${BASE_DOMAIN} (caddy conf, caddy network alias, PACKWIZ_URL).
Inline the static-site caddy mounts (10-static.caddy, www, launcher,
CA cert) into the base compose; set MOTD to "Uli LAN party".

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

caddy/conf.d/00-core.caddy

@@ -3,7 +3,7 @@ http://auth.{$BASE_DOMAIN} {
 	reverse_proxy drasl:25585
 }
 
-http://packwiz.{$BASE_DOMAIN} {
+http://pack.{$BASE_DOMAIN} {
 	root * /srv/pack
 	file_server browse
 }

docker-compose.yml

@@ -26,6 +26,10 @@ services:
     volumes:
       - ./caddy/Caddyfile:/etc/caddy/Caddyfile:ro
       - ./caddy/conf.d/00-core.caddy:/etc/caddy/conf.d/00-core.caddy:ro
+      - ./caddy/conf.d/10-static.caddy:/etc/caddy/conf.d/10-static.caddy:ro
+      - ./www:/srv/www:ro
+      - ./mirror/launcher:/srv/launcher:ro
+      - ./caddy/caddy-root-ca.crt:/srv/ca-pub/ca.crt:ro
       - ./pack:/srv/pack:ro
     networks:
       mcnet:
@@ -35,8 +39,7 @@ services:
         # containers, breaking the ONLINE NeoForge install during pre-bake.
         aliases:
           - "auth.${BASE_DOMAIN}"
-          - "packwiz.${BASE_DOMAIN}"
+          - "pack.${BASE_DOMAIN}"
-
   drasl:
     image: unmojang/drasl:latest
     container_name: drasl
@@ -81,7 +84,7 @@ services:
       # ── Server config ───────────────────────────────────────────
       DIFFICULTY: "normal"
       MODE: "survival"
-      MOTD: "LAN party — kitchen sink"
+      MOTD: "Uli LAN party"
       MAX_PLAYERS: "10"
       VIEW_DISTANCE: "10"
       SIMULATION_DISTANCE: "8"
@@ -89,7 +92,7 @@ services:
       ALLOW_FLIGHT: "TRUE"             # many tech mods need this
 
       # ── Mod source: packwiz pack served by caddy ────────────────
-      PACKWIZ_URL: "http://packwiz.${BASE_DOMAIN}/pack.toml"
+      PACKWIZ_URL: "http://pack.${BASE_DOMAIN}/pack.toml"
 
       # ── RCON for remote admin ───────────────────────────────────
       ENABLE_RCON: "TRUE"