A move names the round it was made for; a stale one is refused

The room counts rounds played and sends the count in its view; a page
sends it back with each move, and the server refuses a move whose count
is behind (a slow connection, a second click, a stale tab), or that has
no count at all (an old page, told to reload). Before, such a move was
taken as the move for the next round. Found in Dip's acceptance run.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jm2auWk6RP71CjaAb4FMoG

template/src/lib/net/view.ts

@@ -23,6 +23,8 @@ export interface RoomView<State> {
 	seats: { id: SeatId; name: string; bot: boolean }[];
 	/** Seats that still have to move before the round resolves. */
 	waitingOn: SeatId[];
+	/** Rounds played so far; a move is sent with the count it was made against. */
+	resolved: number;
 	/** The round being written, from one; null before the game begins. */
 	turn: number | null;
 	over: Outcome | null;