feat(games): add room types and game WS message schemas

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/src/games/types.ts

@@ -0,0 +1,54 @@
+import { z } from "zod";
+
+// --- Room types ---
+
+export interface Room {
+    id: string;
+    gameSlug: string;
+    host: string;
+    players: string[];
+    spectators: Set<string>;
+    state: unknown;
+    status: "waiting" | "playing" | "finished";
+    createdAt: number;
+}
+
+export interface RoomSummary {
+    id: string;
+    gameSlug: string;
+    gameName: string;
+    host: string;
+    playerCount: number;
+    maxPlayers: number;
+    spectatorCount: number;
+    status: "waiting" | "playing" | "finished";
+}
+
+export interface PlayerInfo {
+    discordId: string;
+    username: string;
+}
+
+// --- Client → Server messages ---
+
+export const GameWsClientSchema = z.discriminatedUnion("type", [
+    z.object({ type: z.literal("CREATE_ROOM"), gameType: z.string() }),
+    z.object({ type: z.literal("JOIN_ROOM"), roomId: z.string(), as: z.enum(["player", "spectator"]) }),
+    z.object({ type: z.literal("LEAVE_ROOM"), roomId: z.string() }),
+    z.object({ type: z.literal("GAME_ACTION"), roomId: z.string(), action: z.record(z.unknown()) }),
+]);
+
+export type GameWsClientMessage = z.infer<typeof GameWsClientSchema>;
+
+// --- Server → Client messages ---
+
+export type GameWsServerMessage =
+    | { type: "ROOM_LIST_UPDATE"; rooms: RoomSummary[] }
+    | { type: "GAME_STATE"; roomId: string; state: unknown }
+    | { type: "GAME_UPDATE"; roomId: string; state: unknown }
+    | { type: "PLAYER_JOINED"; roomId: string; player: PlayerInfo; as: "player" | "spectator" }
+    | { type: "PLAYER_LEFT"; roomId: string; playerId: string }
+    | { type: "GAME_STARTED"; roomId: string; state: unknown }
+    | { type: "GAME_ENDED"; roomId: string; winner: string | null; reason: string }
+    | { type: "ROOM_CREATED"; roomId: string; gameSlug: string }
+    | { type: "ERROR"; message: string };