review

type Cell struct {
	Index    int // in the suggestion
	Sheet    string
	At       sheet.Addr
	Was, Now string
	Look     bool // its format, style or note change too
}

type Host interface {
	Theme() *theme.Theme
	Size() (width, height int)
	// Close closes the open overlay.
	Close()
	// Suggestions are those waiting, oldest first.
	Suggestions() []Item
	// Accept and Reject settle the cells of suggestion id picked, by
	// their index in it; nil is all it has waiting.
	Accept(id int, cells []int)
	Reject(id int, cells []int)
	// Reveal puts the pointer on a cell a suggestion sets.
	Reveal(sheet string, at sheet.Addr)
}

type Item struct {
	ID      int
	Agent   string
	Color   int
	Label   string
	Message string
	Whole   bool     // it can only be accepted whole
	Other   []string // what it does besides setting cells
	Cells   []Cell   // the cells still waiting
	Total   int      // the cells it sets, waiting or not
	Failed  string   // why accepting it failed
}

type Panel struct {
	// contains filtered or unexported fields
}