I've read over 262 and presented my case. Or, actually, didn't see any proof for yours. There is NO context to think that "works" in Eph 2:9 refers to works of the Law.
This is not how a proper debate proceeds. You have indeed presented your case, but you have not addressed my argument, and you need to do that to be seen as a credible proponent of your position. If you had addressed my case, there would be quotes from that argument and an explanation of where I have made a mistake. I cannot emphasize this enough: you cannot simply ignore an argument whose conclusion you do not like, you need to engage it, deal with it, address it, etc. Presenting a different case is fine, but it does not relieve you of the obligation to deal with my argument.
At a very high level, then:
1. In Eph 2:9, Paul denies "justification by "works";
2. He does not say "good works", he says works;
3. In verse 11, he has a "therefore" statement and then proceeds to provide a lengthy treatment of how Gentiles can be in God's family too,
precisely the thing you would expect someone to write if they wanted to tell a Gentile that not only Jews - the ones do the works of the Law of Moses and think they can be justified by those works - can be justified.
Now, frankly, I believe this argument is a slam dunk, and I suspect you have no counterargument to it, otherwise you would have provided it.
Remember,
at this point, I am not contesting your assertion that the Law of Moses prescribes good works, so Paul's argument is really still against justification by good works. I will get to that later. For now, I ask you to address the argument in post 262 that, in Eph 2:9, Paul is referring to works of the Law of Moses.
But I must insist: you cannot evade dealing with the details of post 262 if you wish to be seen as a credible proponent of your position.