A table may ask each seat to rank its choices before the deal, in secret; the start line keeps the rankings and create reads them

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

template/server/src/rooms.test.ts

@@ -90,4 +90,38 @@ describe('rooms', () => {
 		expect(rooms.view(room, 'B').chat[1]).toMatchObject({ id: 'A', to: ['B'], turn: 1 });
 		expect(() => rooms.say(room, bo, 'Anyone?', ['Q'])).toThrow(/Nobody at this table/);
 	});
+
+	it('keeps each ranking secret until the deal, which reads them all from the start line', () => {
+		const dealt: Record<string, string[]>[] = [];
+		const ranked: GameSpec<State, Input> = {
+			...game,
+			rankable: () => [
+				{ value: 'red', label: 'Red' },
+				{ value: 'blue', label: 'Blue' }
+			],
+			create: (names, seed, rules, options, rankings) => {
+				dealt.push(rankings ?? {});
+				return game.create(names, seed, rules, options);
+			}
+		};
+		const rooms = new Rooms(ranked, new Store(dir));
+		const host = rooms.create('Ann', 2);
+		const guest = rooms.join(host.room, 'Bo');
+		const room = host.room;
+		expect(() => rooms.rank(room, host.token, ['red'])).toThrow(/every choice once/);
+		rooms.rank(room, host.token, ['blue', 'red']);
+		expect(rooms.view(room, 'A').yourRanking).toEqual(['blue', 'red']);
+		expect(rooms.view(room, 'B')).toMatchObject({ yourRanking: null, ranked: 1 });
+		rooms.begin(room, host.token);
+		expect(dealt).toEqual([{ A: ['blue', 'red'] }]);
+		expect(() => rooms.rank(room, guest.token, ['red', 'blue'])).toThrow(/ranking is closed/);
+		new Rooms(ranked, new Store(dir));
+		expect(dealt[1]).toEqual({ A: ['blue', 'red'] });
+	});
+
+	it('refuses a ranking at a table that asks for none', () => {
+		const rooms = new Rooms(game, new Store(dir));
+		const host = rooms.create('Ann', 2);
+		expect(() => rooms.rank(host.room, host.token, ['A'])).toThrow(/asks for no ranking/);
+	});
 });