version

var (
	Version = "dev"
	Commit  = "none"
	Date    = "unknown"
)

These values are overridden at build time. Release builds set all three:

go build -ldflags "\
  -X github.com/ArasanDev/yt/internal/version.Version=v0.1.0 \
  -X github.com/ArasanDev/yt/internal/version.Commit=$(git rev-parse --short HEAD) \
  -X github.com/ArasanDev/yt/internal/version.Date=$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
  ./cmd/yt

Version is the only value MCP clients see; keep it a plain version string.