R&D branch for an authoritative Unreal game server (Prospect.Unreal).
The connection handshake already reaches PlayerController spawn; this
commit pushes it toward real players joining:
- Program.cs: target the Cycle station map + game mode (configurable via
PROSPECT_MAP/GAMEMODE/PORT), proper host loop, and initialise a
GameSession so NMT_Join -> Login no longer fails ("GameSession is null").
- UWorld.WelcomePlayer: send the world's real map/game mode to the client
instead of the UE ThirdPerson template.
- Dockerfile.gameserver + .gitea/workflows/game-server.yml: build/push a
separate image (the-cycle-game) on the game-server branch, ntfy notify.
- GAMESERVER.md: honest state + roadmap (player spawn + movement
replication need live client testing; AI/loot intentionally deferred).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>