tv-out

Show the room's TV screen on a wired (HDMI) display. A separate, small kit: it does not use or change the Google Cast kit.

• <WiredTvButton code link? className? noteClassName? /> - put it next to <CastButton>, same visibility rule (host's device and host screen).
  • Computer: Show on wired TV opens the game's display page (?room=CODE&role=display&wired=1) in its own window. In Chrome/Edge with a second screen it asks for the browser's multi-screen permission once and moves the window there. Elsewhere it stays a normal window to drag.
  • Phone/tablet: Open on another device shows the link (pass link={(url) => <TvLink url={url} />} for a QR) for a laptop, Fire Stick or smart-TV browser.
  • Hidden on the Chromecast, in frames, and inside a wired window.
• initWiredWindow() - call once in main.tsx. In a wired window it adds the cast class (existing animations-off CSS applies) and a wired class, and the first click or key press goes fullscreen (that click also unlocks sound).
• wiredUrl(origin, code), isWiredWindow(), openWiredWindow(url), pickOtherScreen(details).

Notes

• The multi-screen part (getScreenDetails, screen.isExtended) is Chromium-only as far as we know; it is feature-detected and falls back silently.
• The wired window joins the room as an ordinary host screen. The game's usual music rules decide which screen plays.