Duels record the rules revision they began under

CURRENT_RULES is stamped on the start line and the game state, and a
ledger replays under the revision it recorded (1 when it has none), so a
future fix that changes how a past turn resolves can keep the old path
for old duels. The reports desk skill now says when to bump it: only
when the deploy gate flags ledgers.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0141G6xqLeNRYEtviLWSB5Up

server/src/rooms.ts

@@ -7,7 +7,7 @@ import { randomBytes } from 'node:crypto';
 import { chooseBotTurn } from '../../src/lib/game/bot';
 import { resolveTurn } from '../../src/lib/game/resolve';
 import { GESTURES, type Gesture } from '../../src/lib/game/spells';
-import { createGame, inDuel, SPECTATOR, type GameState, type TurnInput, type WizardId } from '../../src/lib/game/state';
+import { CURRENT_RULES, createGame, inDuel, SPECTATOR, type GameState, type TurnInput, type WizardId } from '../../src/lib/game/state';
 import { viewFor, type ChatLine, type RoomView } from '../../src/lib/game/view';
 import type { LedgerLine, Store } from './store';
 
@@ -142,7 +142,7 @@ export class Rooms {
 		if (seat.id !== room.seats[0]?.id) throw new RoomError('Only the wizard who opened the table may begin the duel.', 403);
 		if (room.state) throw new RoomError('The duel has already begun.', 409);
 		if (room.seats.length < 2) throw new RoomError('A duel needs at least two wizards.', 409);
-		this.commit(room, { t: 'start', seed: newSeed() });
+		this.commit(room, { t: 'start', seed: newSeed(), rules: CURRENT_RULES });
 	}
 
 	addBot(room: Room, token: string | undefined): Seat {
@@ -160,7 +160,7 @@ export class Rooms {
 		if (room.seats.some((s) => s.name.toLowerCase() === name.toLowerCase())) throw new RoomError('Another wizard here already has that name.', 409);
 		const seat: Seat = { id: SEAT_IDS[room.seats.length], name, token: bot ? '' : newId(18), bot };
 		this.commit(room, { t: 'seat', id: seat.id, name, token: seat.token, bot });
-		if (room.seats.length === room.size) this.commit(room, { t: 'start', seed: newSeed() });
+		if (room.seats.length === room.size) this.commit(room, { t: 'start', seed: newSeed(), rules: CURRENT_RULES });
 		return seat;
 	}
 
@@ -279,7 +279,7 @@ function apply(room: Room, line: LedgerLine): void {
 			room.seats.push({ id: line.id, name: line.name, token: line.token, bot: line.bot });
 			break;
 		case 'start':
-			room.state = createGame(Object.fromEntries(room.seats.map((s) => [s.id, s.name])), line.seed);
+			room.state = createGame(Object.fromEntries(room.seats.map((s) => [s.id, s.name])), line.seed, line.rules ?? 1);
 			break;
 		case 'turn':
 			if (!room.state) return;

server/src/store.ts

@@ -9,7 +9,8 @@ import type { TurnInput, WizardId } from '../../src/lib/game/state';
 export type LedgerLine =
 	| { t: 'room'; id: string; seats: number; createdAt: number }
 	| { t: 'seat'; id: WizardId; name: string; token: string; bot: boolean }
-	| { t: 'start'; seed: number }
+	/** Ledgers from before revisions were recorded resolve under rules 1. */
+	| { t: 'start'; seed: number; rules?: number }
 	| { t: 'turn'; at: number; inputs: Record<WizardId, TurnInput> }
 	/** Written after the turn that ends the duel, for anything that reads ledgers without the engine. */
 	| { t: 'over'; at: number; winner: WizardId | null; reason: string }