Update: Ah, I see this part: "This credential is only authorized for use with Claude Code and cannot be used for other API requests."

Old comment for posterity: How do we know this was a strategy/policy decision versus just an engineering change? (Maybe the answer is obvious, but I haven't seen the source for it yet.) I skimmed the GitHub issue, but I didn't see discussion about why this change happened. I don't mean just the technical change; I mean why Anthropic did it. Did I miss something?