refactor(characters): drive shared UI from active character

src/app/private-room/__tests__/use-private-room-flow-navigation.test.tsx

@@ -2,7 +2,9 @@ import { act, type Dispatch } from "react";
 import { createRoot, type Root } from "react-dom/client";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 
+import { getCharacterBySlug } from "@/data/constants/character";
 import type { LoginStatus } from "@/data/schemas/auth";
+import { CharacterProvider } from "@/providers/character-provider";
 import { getCharacterRoutes } from "@/router/routes";
 import type { PrivateRoomEvent } from "@/stores/private-room";
 import type { PrivateRoomUnlockPaywallRequest } from "@/stores/private-room/private-room-state";
@@ -80,7 +82,7 @@ describe("Private Room paywall navigation", () => {
     renderHarness(root, "guest", roomDispatch);
 
     expect(mocks.openAuth).toHaveBeenCalledWith(
-      getCharacterRoutes("elio").privateRoom,
+      getCharacterRoutes("maya").privateRoom,
     );
     expect(mocks.openSubscription).not.toHaveBeenCalled();
   });
@@ -91,9 +93,13 @@ function renderHarness(
   loginStatus: LoginStatus,
   roomDispatch: Dispatch<PrivateRoomEvent>,
 ): void {
+  const character = getCharacterBySlug("maya");
+  if (!character) throw new Error("Missing Maya character fixture");
   act(() => {
     root.render(
-      <Harness loginStatus={loginStatus} roomDispatch={roomDispatch} />,
+      <CharacterProvider character={character}>
+        <Harness loginStatus={loginStatus} roomDispatch={roomDispatch} />
+      </CharacterProvider>,
     );
   });
 }