Twelve spreads on the week AI moved below the application layer. OpenAI ships Codex for Chrome — 4M weekly users, 8× since January — where the signed-in work already lives. Google retires the Chromebook brand and unveils Googlebook, a Gemini-native Android-desktop laptop with five OEM partners. Anthropic is in advanced talks to acquire Stainless ($300M+), the SDK layer that powers OpenAI's, Google's and its own developer surface. OpenAI fires Daybreak as a direct counter to Anthropic's Project Glasswing. Stripe argues AI agents should write Terraform, not call the API. GitHub Copilot agents now read live terminals and browser tabs. Apple's response window opens June 8. HN anchor: SecurityBaseline.eu audits 3,000 EU government sites — 1,070 exposed phpMyAdmins, 99% poor email crypto. Architecture: Cloudflare's QUIC death-spiral postmortem — a 2017 kernel idle-fix, three lines to undo.