master
refactor: load achievement definitions from database with periodic reload
refactor: pack fat signatures into params structs (R1)
ci: add golangci-lint and -race; drop dead go-swagger step
feat: quick match with bot fallback, bot games count for the human
feat: cut over auth to JWT Bearer tokens
feat: add achievements system (p.30 IMPROVEMENTS)
fix: leave waiting game endpoint, SPA cache headers
feat: player statistics endpoint and lobby stats modal
refactor player state