feat(characters): support character-scoped conversations

src/stores/private-room/private-room-context.tsx

@@ -4,6 +4,8 @@ import type { Dispatch, ReactNode } from "react";
 import { createActorContext, shallowEqual } from "@xstate/react";
 import type { SnapshotFrom } from "xstate";
 
+import { DEFAULT_CHARACTER_ID } from "@/data/constants/character";
+
 import { privateRoomMachine } from "./private-room-machine";
 import type {
   PrivateRoomEvent,
@@ -11,6 +13,7 @@ import type {
 } from "./private-room-machine";
 
 export interface PrivateRoomContextState {
+  characterId: string;
   status: string;
   items: MachineContext["items"];
   creditBalance: number;
@@ -31,11 +34,17 @@ const PrivateRoomActorContext = createActorContext(privateRoomMachine);
 
 export interface PrivateRoomProviderProps {
   children: ReactNode;
+  characterId?: string;
 }
 
-export function PrivateRoomProvider({ children }: PrivateRoomProviderProps) {
+export function PrivateRoomProvider({
+  children,
+  characterId = DEFAULT_CHARACTER_ID,
+}: PrivateRoomProviderProps) {
   return (
-    <PrivateRoomActorContext.Provider>{children}</PrivateRoomActorContext.Provider>
+    <PrivateRoomActorContext.Provider options={{ input: { characterId } }}>
+      {children}
+    </PrivateRoomActorContext.Provider>
   );
 }
 
@@ -58,6 +67,7 @@ function selectPrivateRoomState(
   state: PrivateRoomSnapshot,
 ): PrivateRoomContextState {
   return {
+    characterId: state.context.characterId,
     status: String(state.value),
     items: state.context.items,
     creditBalance: state.context.creditBalance,