6 October: grounded mode fix, CLI engines in the design panel, key proxy details

Chats create files reliably again, and design files from Claude Code, Codex and Gemini open in the design panel.

User impact: Not reviewed

Added on 23 October 2026 from the repository history. Nineteen deploys ran on this day. The 6 October entries describe the feature branch of that day. Production between 7 and 13 October ran a different product branch that did not yet contain part of that work, which merged on 13 October.

New

Files that Claude Code, Codex or Gemini write in your workspace (SVG, HTML, JSX, TSX; at most 20) open in the design panel after a turn.
Key proxy: the workspace trusts the key proxy certificate automatically, and GitHub tools install through npm with the proxy login.

Fixed

Grounded mode starts by itself only for questions. Requests such as "write /work/landing.html" keep their tools and no longer answer "no information".
A revoked or expired key is refused outright.