move `window.open` (or `window`) out of find

[4www]

• so find does not open itself the window, but the app requesting it does
• so a resulting find query also advices for an action to take, usually open, but there is display, exec already defined etc.
• so browser/node.js have better compatibility (tests and cli usages)
• so find does not need an init, but the context can call it and feed it with a search from a query param it does not know about?
• so find "needs" nothing from its context, but can gather, and be fed, information