fix(nmsr): render real skins, not default — pin auth. to host over https

Every avatar rendered the default skin. NMSR fetched the player profile from
Drasl fine, but the profile embeds an absolute HTTPS skin URL (Drasl BaseURL is
https), and NMSR could not connect to auth.${BASE_DOMAIN}:443: the mcnet alias
resolves auth. -> caddy, which only listens on :80 internally. Logs showed
`fetch_texture_from_mojang … client error (Connect)` for the skin URL, so NMSR
fell back to the default skin.

Mirror what the minecraft service already does: pin auth.${BASE_DOMAIN} to the
host via extra_hosts so NMSR reaches the host nginx on :443 (real LE cert,
publicly trusted — no private CA needed), and switch the nmsr mojank endpoints
from http:// to https:// so the profile/texture scheme matches the embedded
skin URLs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docker-compose.yml

@@ -158,6 +158,13 @@ services:
     restart: unless-stopped
     volumes:
       - ./nmsr/config.toml:/nmsr/config.toml:ro
+    # Drasl embeds absolute HTTPS skin URLs (BaseURL is https) in the profile.
+    # The mcnet alias resolves auth. -> caddy (http :80 only), so NMSR's https
+    # skin fetch to auth.:443 finds no listener and every avatar falls back to
+    # the default skin. Pin auth. to the host (same as the minecraft service) so
+    # NMSR reaches the host nginx on :443 with the real LE cert.
+    extra_hosts:
+      - "auth.${BASE_DOMAIN}:host-gateway"
     networks:
       - mcnet