The Lotus host drove these by clicking EC's hidden controls in our DOM and
read screenshare/layout state from it, which only works while the frame is
same-origin and breaks whenever a data-testid changes. New actions:
- toWidget io.lotus.set_layout { layout: "grid" | "spotlight" } → the layout
switch view model's setLayout.
- toWidget io.lotus.open_settings { open?: boolean } → setSettingsOpen
(toggle when `open` is omitted).
- toWidget io.lotus.toggle_reactions → a window event the reactions button
listens for.
- fromWidget io.lotus.controls_state { screensharing, layout } on change; its
arrival tells the host the fork supports the actions above.
Screensharing stays host-driven for now: getDisplayMedia needs the user's
click to reach this frame (Capability Delegation), which a widget message
doesn't carry.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA
Lotus CIandClaude Opus 5.5
6beebd3ea7