feat(characters): support character-scoped conversations

src/data/services/api/index.ts

@@ -6,6 +6,7 @@ export * from "./api_path";
 export * from "./api_result";
 export * from "./auth_api";
 export * from "./chat_api";
+export * from "./character_api";
 export * from "./feedback_api";
 export * from "./http_client";
 export * from "./metrics_api";