Complete private authentication, server integrations and activity reporting

Add Fabric/Forge version builds and Paper integration, preserve permanent player identities across renames, harden session authorization, and surface privacy-conscious launcher/server activity in the panel.

docker-compose.yml

@@ -23,6 +23,8 @@ services:
       # Optional — can also be set in the panel's Settings page.
       CURSEFORGE_API_KEY: ${CURSEFORGE_API_KEY:-}
       MAX_UPLOAD_MB: ${MAX_UPLOAD_MB:-2048}
+      PUBLIC_URL: ${PUBLIC_URL:-}
+      SCOPENET_TRUSTED_PROXIES: ${SCOPENET_TRUSTED_PROXIES:-}
       RUST_LOG: ${RUST_LOG:-info}
     volumes:
       - panel-data:/data