Apple has finally shipped the thing it spent two years promising. At WWDC26 it stripped Siri back to the studs and rebuilt it as Siri AI, a chatty, context-aware assistant that can reach into your messages, email and photos and actually get things done. The twist sits one layer down, and Apple said it plainly on stage: the brains come from a deep collaboration with Google and its Gemini models. A Siri that finally does what the 2024 demo promised Let's start with what was announced, because there's a lot of it. In its keynote release, Apple unveiled the next generation…