Can GPT-6 Astra High build a full working GitLab implementation in one shot?

A user asks whether GPT-6 Astra High can produce a full working GitLab implementation in one shot. The shared prompt tells the model not to respond until everything is complete. Once it believes it is done, it should run three independent QA code reviews and fix high/medium findings it agrees with. “We will soon find out,” the user writes in the September 16 post.