The host has a hand on the other seats: once the duel begins, Seats makes a transfer phrase for another wizard's seat, which gives it a new token when claimed, and gives the seat of a wizard who cannot go on to a bot, which duels the turn it owes at once and keeps gestures already sealed; the wizard's token opens nothing while it stands in, their page goes to the gallery with the reason and a claim box, the roster says a bot duels for them, and a rematch holds their seat without the stand-in; the server pings every socket and closes one a dead browser left open

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0141G6xqLeNRYEtviLWSB5Up

src/lib/game/client.ts

@@ -169,6 +169,9 @@ export const api = {
 	rematch: (roomId: string, token: string) =>
 		call<{ roomId: string; seat: WizardId | null; token: string | null; created: boolean }>('POST', `/api/rooms/${roomId}/rematch`, { token }),
 	transfer: (roomId: string, token: string) => call<{ phrase: string; expiresAt: number }>('POST', `/api/rooms/${roomId}/transfer`, { token }),
+	/** The host's phrase for another wizard's seat; claimed, it re-seats them. */
+	hostPhrase: (roomId: string, token: string, seat: WizardId) => call<{ phrase: string; expiresAt: number }>('POST', `/api/rooms/${roomId}/phrase`, { token, seat }),
+	standIn: (roomId: string, token: string, seat: WizardId) => call<RoomView>('POST', `/api/rooms/${roomId}/standin`, { token, seat }),
 	claim: (phrase: string) => call<{ roomId: string; seat: WizardId; token: string }>('POST', '/api/transfer', { phrase }),
 	report: (roomId: string, token: string, happened: string, expected: string) =>
 		call<{ id: string }>('POST', `/api/rooms/${roomId}/report`, { token, happened, expected }),

src/lib/game/duel.svelte.ts

@@ -4,7 +4,7 @@
 
 import { tick } from 'svelte';
 import { chooseBotTurn } from './bot';
-import { api, rememberSeat, watchRoom, type HeldSeat } from './client';
+import { api, rememberSeat, ServerError, watchRoom, type HeldSeat } from './client';
 import { markTalkSeen } from './talk';
 import {
 	cellsOverlap,
@@ -219,6 +219,8 @@ export interface Remote extends HeldSeat {
 	started: boolean;
 	connected: boolean;
 	error: string;
+	/** The server stopped taking this seat's token while the page was open, and why; the page goes to the gallery. */
+	lost: string;
 	chat: ChatLine[];
 	/** How many watch from the Peanut Gallery. */
 	audience: number;
@@ -867,6 +869,26 @@ export class Duel {
 		return api.transfer(r.roomId, r.token);
 	}
 
+	/** Host only: a phrase for another wizard's seat, which gives it a new token when claimed. */
+	hostPhrase(seat: WizardId): Promise<{ phrase: string; expiresAt: number }> {
+		const r = this.remote!;
+		return api.hostPhrase(r.roomId, r.token, seat);
+	}
+
+	/** Host only: a bot duels in this wizard's seat for the rest of the duel, until a phrase gives it back. */
+	async standIn(seat: WizardId): Promise<boolean> {
+		const r = this.remote;
+		if (!r) return false;
+		r.error = '';
+		try {
+			this.apply(await api.standIn(r.roomId, r.token, seat));
+			return true;
+		} catch (e) {
+			r.error = e instanceof Error ? e.message : 'The seat could not be given to a bot.';
+			return false;
+		}
+	}
+
 	/** Say something to the whole table. Resolves false when the words did not arrive. */
 	async say(text: string): Promise<boolean> {
 		const r = this.remote;
@@ -913,7 +935,10 @@ export class Duel {
 		const refresh = () => {
 			fetchView()
 				.then((v) => this.apply(v))
-				.catch((e: Error) => (r.error = e.message));
+				.catch((e: Error) => {
+					if (e instanceof ServerError && e.status === 403 && !r.spectating) r.lost = e.message;
+					else r.error = e.message;
+				});
 		};
 		return watchRoom(r.roomId, r.token, refresh, (open) => (r.connected = open));
 	}
@@ -1045,6 +1070,7 @@ function remoteFrom(view: RoomView, token: string): Remote {
 		started: view.state !== null,
 		connected: false,
 		error: '',
+		lost: '',
 		chat: view.chat,
 		audience: view.audience,
 		spectating: view.me === SPECTATOR,

src/lib/game/view.ts

@@ -33,7 +33,8 @@ export interface RoomView {
 	me: WizardId;
 	/** The wizard who opened the table and may begin the duel. */
 	host: WizardId;
-	seats: { id: WizardId; name: string; bot: boolean }[];
+	/** Who sits where; `standIn` marks a wizard's seat the host gave to a bot, which duels in it until they take it back. */
+	seats: { id: WizardId; name: string; bot: boolean; standIn?: true }[];
 	/** 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. */