NATS has no auth configured, so NATS_TOKEN was a placeholder that
confused users. Made it optional in the Go agent (default empty) and
removed it from Quick Setup commands. Also removed GAME_SERVER_PATH
since one-click deploy handles server installation. License key already
auto-populates from auth store after previous commit.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Go deployment orchestrator with platform-specific SteamCMD install,
Rust server download, server.cfg generation, and service registration.
Wire deploy command subscription in daemon, make GameServerPath optional,
add InstallDir config with OS-aware defaults. Fix unused imports and
WebSocket subscribe API in ServerView.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>