fix(lint): resolve all eslint errors across monorepo

- Type response bodies in gameController.test.ts to fix no-unsafe-member-access
- Replace async methods with Promise.resolve() in InMemoryGameSessionStore
  and InMemoryLobbyGameStore to satisfy require-await rule
- Add argsIgnorePattern and varsIgnorePattern to eslint config so
  underscore-prefixed params are globally ignored
- Fix no-misused-promises in ws/index.ts, lobbyHandlers, gameHandlers,
  __root.tsx, login.tsx and play.tsx by using void + .catch()
- Fix no-floating-promises on navigate calls in login.tsx
- Move API_URL outside Play component to fix useCallback dependency warning
- Type fetch response bodies in play.tsx to fix no-unsafe-assignment
- Add only-throw-error: off for route files (TanStack Router throw redirect)
- Remove unused WebSocket import from express.d.ts
- Fix unsafe return in connections.ts by typing empty Map constructor
- Exclude scripts/ folder from eslint
- Add targeted override for better-auth auth-client.ts (upstream typing issue)

apps/api/src/gameSessionStore/InMemoryGameSessionStore.ts

@@ -3,15 +3,17 @@ import type { GameSessionStore, GameSessionData } from "./GameSessionStore.js";
 export class InMemoryGameSessionStore implements GameSessionStore {
   private sessions = new Map<string, GameSessionData>();
 
-  async create(sessionId: string, data: GameSessionData): Promise<void> {
+  create(sessionId: string, data: GameSessionData): Promise<void> {
     this.sessions.set(sessionId, data);
+    return Promise.resolve();
   }
 
-  async get(sessionId: string): Promise<GameSessionData | null> {
-    return this.sessions.get(sessionId) ?? null;
+  get(sessionId: string): Promise<GameSessionData | null> {
+    return Promise.resolve(this.sessions.get(sessionId) ?? null);
   }
 
-  async delete(sessionId: string): Promise<void> {
+  delete(sessionId: string): Promise<void> {
     this.sessions.delete(sessionId);
+    return Promise.resolve();
   }
 }