Build and Sketch on your own codebase, on an isolated branch

Pick a design system by what you're making. The composer chip regroups into None, starter directions under plain names — SaaS, Landing page, Internal tool, iOS app, Colorful — your own systems, then the rest of the kit. Hover or focus a row and a miniature screen painted in its palette and heading font previews beside the list — no build needed to judge. The default is now None: the agent picks a direction from your brief, and your last pick is remembered.

Four new kit directions. SaaS, Landing page, Internal tool and Colorful join the catalog (17 directions in all), each a complete package — palette, fonts, type scale, radius, shadow, motion — and each a starter in the picker above.

External calls can name the agent. design_generate and project_create accept runtime and model — or a directive inside the brief itself (@codex/gpt-5, agent: codex, model: gpt-5). A call that names none reuses the previous call's pick, then the Settings → MCP access default, then the project's own. server_info now lists the runtime ids a caller may name.

Release notes render fully in the update dialog. Notes are read from the published release itself — so linked screenshots show — with the update feed's copy as fallback. A screenshot clicks open full size, a link opens in your browser instead of navigating the studio away, and pasted-in GitHub formatting no longer flattens the lists.

Menus sit where their button is. The activity feed, the conversation switcher, each conversation's ⋯ menu and the scene editor's export menu now anchor to the control that opened them, and the activity list re-lays its rows so long titles wrap under the status line instead of squeezing to a letter per line.