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

src/lib/game/client.ts

@@ -154,7 +154,7 @@ export const api = {
 	view: (roomId: string, token: string) => call<RoomView>('GET', `/api/rooms/${roomId}?token=${encodeURIComponent(token)}`),
 	/** The gallery's view: no token, no seat, nothing any wizard could not see. */
 	watch: (roomId: string) => call<RoomView>('GET', `/api/rooms/${roomId}`),
-	turn: (roomId: string, token: string, input: TurnInput) => call<RoomView>('POST', `/api/rooms/${roomId}/turn`, { token, input }),
+	turn: (roomId: string, token: string, input: TurnInput, resolved: number) => call<RoomView>('POST', `/api/rooms/${roomId}/turn`, { token, input, resolved }),
 	say: (roomId: string, token: string, text: string) => call<RoomView>('POST', `/api/rooms/${roomId}/say`, { token, text }),
 	/** A word from the gallery, signed with a name, when the host allows it. */
 	sayFromGallery: (roomId: string, name: string, text: string) => call<RoomView>('POST', `/api/rooms/${roomId}/say`, { name, text }),

src/lib/game/duel.svelte.ts

@@ -229,6 +229,8 @@ export interface Remote extends HeldSeat {
 	expected: string[];
 	rematch: RoomView['rematch'];
 	rematchOf: string | null;
+	/** Turns played so far, as the server last said. */
+	resolved: number;
 	keeper: string;
 	keeperZone: string;
 }
@@ -780,7 +782,7 @@ export class Duel {
 		this.sending = true;
 		r.error = '';
 		try {
-			this.apply(await api.turn(r.roomId, r.token, yours));
+			this.apply(await api.turn(r.roomId, r.token, yours, r.resolved));
 		} catch (e) {
 			r.error = e instanceof Error ? e.message : 'The move did not reach the server.';
 		} finally {
@@ -864,6 +866,7 @@ export class Duel {
 		r.expected = view.expected;
 		r.rematch = view.rematch;
 		r.rematchOf = view.rematchOf;
+		r.resolved = view.resolved;
 		markTalkSeen(r.roomId, view.chat.length);
 		const wasStarted = r.started;
 		r.started = view.state !== null;
@@ -1021,6 +1024,7 @@ function remoteFrom(view: RoomView, token: string): Remote {
 		expected: view.expected,
 		rematch: view.rematch,
 		rematchOf: view.rematchOf,
+		resolved: view.resolved,
 		keeper: view.keeper,
 		keeperZone: view.keeperZone
 	};

src/lib/game/view.ts

@@ -36,6 +36,8 @@ export interface RoomView {
 	seats: { id: WizardId; name: string; bot: boolean }[];
 	/** Seats that still have to move before the turn resolves. */
 	waitingOn: WizardId[];
+	/** Turns played so far, time stops included; gestures are sent with the count they were made against. */
+	resolved: number;
 	state: GameState | null;
 	chat: ChatLine[];
 	/** How many watch from the Peanut Gallery. */