# Player profile + wallets — `client.player`

`PlayerDomain` (source: `src/domains/PlayerDomain.ts`) — the observable player
profile: identity plus currency wallets. Synced under revision key `profile`.

There is no separate wallet service in this SDK. Wallet balances are read from
the profile and are credited/debited server-side (purchases, quest/battle pass
rewards, scenario nodes).

## Surface

`client.player` is a `SyncedState<PlayerProfile>`:

```ts
client.player.data       // PlayerProfile | undefined
client.player.status     // 'idle' | 'loading' | 'ready' | 'error'
client.player.onChange((snapshot) => { /* fires immediately */ });
await client.player.load();
await client.player.reload();  // force refetch
```

## Types

```ts
interface PlayerProfile {
  player?: Player;
  wallets?: Wallet[];
}

interface Player {
  createdAt?: string;
  id?: string;
  language?: string;
  nickname?: string;
  projectId?: string;
  region?: string;
}

interface Wallet {
  balance?: number;
  currency?: string;  // currency code configured in the dashboard
}
```

## Behavior notes

- Warmed automatically at login (one of the four parallel warm loads).
- Invalidated (refetched) after every successful store purchase and after
  scenario server callbacks — subscribers see fresh balances without waiting
  for the revision poll.
- All fields are optional on the wire (`?`); code defensively.
- React: `useSyncExternalStore` maps directly onto `onChange` (see the SDK
  README "React recipe").