The generator matrix

 1  0  0  1  1  1  X  1  1  X  1  X  1  0  1  1  X  1  X  1  1  0  0  1  1  X  1  0  1  X  1  1  0  1  1  0  1  X  1  X  1  0  1  1  X  1  1  X  X  1  1  1  1  0  0  0  1  1  1  1  1  1  1  1  0  1  1  1  1  1  1  1  1  0  1  1  1  1  0  1  X  1  1  1  1  1  1  1  X  1  1  1  1  0  X  0  X  0  X
 0  1  0  0  1 X+1  1  X X+1  1  0  0  1  1  X X+1  1  1  X  X  1  1  X X+1  0  1  X  1  0  1  1  0  1 X+1  X  1 X+1  0  X  1  1  0  X  0  X  1 X+1  1  1  X  0 X+1  1  1  1  X  0  0  0  0  X  X  X  X  0  X  X  X  0  1 X+1 X+1 X+1  1  1  1 X+1 X+1  X  0  0  1 X+1 X+1 X+1  X  0  0  0  1  1  1  1  0  X  X  X  0  1
 0  0  1  1 X+1  0 X+1  1 X+1  X  X  1  X  1  1  X  1  1  1  0  0  0  1  1  1  X  X X+1  0  1 X+1  X X+1 X+1 X+1  X  X  1 X+1  0  0  1  X X+1  1  1  0  0 X+1  0 X+1  1  X  X  1  1  0  0  X  X  X  0  1 X+1  1  X  0  1 X+1  1  1  0  X  X X+1 X+1  0  X  0  1  X  1 X+1  1 X+1 X+1 X+1  1  0  X  X  0  0  X  X  X  0  0  1
 0  0  0  X  X  X  0  0  0  X  X  X  0  X  X  X  0  X  0  0  0  X  X  0  0  0  X  X  X  X  0  0  0  X  X  X  0  0  0  0  X  X  0  0  X  0  0  X  X  X  X  X  X  0  0  0  0  X  X  0  0  0  0  0  X  X  X  X  0  0  0  0  0  X  X  0  X  X  X  X  X  X  X  X  0  X  X  0  X  0  X  X  0  X  X  X  X  X  0

generates a code of length 99 over Z2[X]/(X^2) who´s minimum homogenous weight is 98.

Homogenous weight enumerator: w(x)=1x^0+60x^98+54x^100+4x^102+2x^104+6x^108+1x^128

The gray image is a linear code over GF(2) with n=198, k=7 and d=98.
As d=98 is an upper bound for linear (198,7,2)-codes, this code is optimal over Z2[X]/(X^2) for dimension 7.
This code was found by Heurico 1.16 in 28.9 seconds.