The generator matrix

 1  0  1  1  1  X  1  1 X^2  1  1  0  1  1 X^2+X  1  1 X^2+X  1  1 X^2  1  1 X^2+X X^2+X  X  X  X X^2  0 X^2  0  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
 0  1  1 X^2 X+1  1  X X^2+1  1  0  1  1 X^2+X X^2+X+1  1 X^2+X X^2+X+1  1 X^2 X+1  1  X X^2+1  1  1  1  1  1  1  1  1  1 X^2  0 X^2  0 X^2+X  X X^2+X  X X^2+X+1 X^2+1 X^2+X+1 X+1  1  1 X+1
 0  0  X X^2+X X^2 X^2+X  X  0  X X^2 X^2+X X^2  0  X  0 X^2 X^2+X X^2  X  0 X^2+X X^2+X X^2  X X^2+X X^2  X  0 X^2 X^2+X  0  X X^2 X^2+X  0  X X^2+X X^2  X  0 X^2 X^2+X  0 X^2+X X^2  0  X

generates a code of length 47 over Z2[X]/(X^3) who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+30x^46+192x^47+30x^48+2x^62+1x^64

The gray image is a linear code over GF(2) with n=188, k=8 and d=92.
As d=93 is an upper bound for linear (188,8,2)-codes, this code is optimal over Z2[X]/(X^3) for dimension 8.
This code was found by Heurico 1.16 in 1.63 seconds.