tiennm99 4c068849c4 refactor(server): rename database package to lobby, drop ratel legacy files ...

Rename
- server/database/ → server/lobby/ (17 import sites + qualified references)
- Package was named "database" but there is no database — it's in-memory
  hashmaps for players/rooms/spectators. "lobby" accurately names its role:
  the multiplayer game lobby state (who is in what room, joining/leaving,
  spectating).

Ratel-online legacy cleanup
- Delete server/README.md — 100% Chinese, entirely about ratel card games
  (斗地主/跑得快/德州扑克/麻将/骗子酒馆/Uno). Zero relevance to gomoku.
- Delete server/build.sh + server/build.ps1 — multi-platform ratel-server
  build scripts with mixed Chinese comments, superseded by Makefile +
  Dockerfile.
- Delete server/docs/ — Chinese Docker deployment guide + quickstart,
  superseded by root docs/deployment-guide.md and root README.md.
- Delete server/demo.gif — ratel card-game demo screenshot.

Comment fixes: update "database" references in consts/const.go and
game/board.go package docs to point at "lobby" instead.

go vet + go test ./... green.

2026-04-11 16:08:46 +07:00

..

const.go

refactor(server): rename database package to lobby, drop ratel legacy files

2026-04-11 16:08:46 +07:00