Codex changelog: Sites preview hardens, Windows sandbox lands

Following last week's Codex "Sites" launch (covered June 6), this week's update adds archive controls, smoother TUI markdown, stronger remote execution and app-server support, Windows sandbox provisioning, and image-generation extension support, plus auth and command-safety improvements. Minor on its own, but the Windows sandbox in particular widens where Codex's autonomous execution can run. Update to prior coverage — the Sites feature itself was already reported.

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Sources: Codex changelog · Releasebot: Codex June 2026