Code sleuth "pdfu" has uncovered iOS 27 and macOS Golden Gate private frameworks that show Apple has designed its new Siri architecture to work with third-party AI models at what appears to be a surprisingly deep level. One mechanism called Model Delegation allows Claude to appear as a Siri extension in the same way as the existing built-in ChatGPT extension. In pdf's video, shared on X, the macOS user brings up the "Search or Ask" bar and chooses Claude as the AI model via an "Ask..." contextua...