Add launcher engine (scopenet-core) and admin panel server
- scopenet-shared: wire types for branding, auth, instances, manifests
- scopenet-core: Mojang versions/libraries/assets, automatic Java runtimes,
Fabric/Quilt/Forge/NeoForge installation, file sync, launch command
builder, Microsoft auth, servers.dat injection, server list ping
- scopenet-panel: Axum + SQLite admin API with JWT auth, users/groups,
branding, settings, instances, Modrinth/CurseForge/zip import, file
hosting and launch stats
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011ARcGWxLx21FwXJ3yfGriS