refactor: remove obsolete config and cross-layer exports

Drop the temporary static-generation retry override and stale hydration suppression. Refresh outdated Next.js and migration comments, and stop re-exporting Result through the storage layer.

src/data/repositories/interfaces/ichat_repository.ts

@@ -3,12 +3,7 @@
 /**
  * IChatRepository 接口
  *
- * 对齐 Dart 端 `ChatRepository` 抽象（lib/data/repositories/chat_repository.dart）：
- *   - 远程：发送消息、获取历史
- *   - 本地：写入 / 批量覆盖 / 读取 / 清空 / 计数
- *
- * 私有助手（`_chatToLocal` / `_localToChat` / `_mapLocalStorageResult`）不暴露。
- * 
+ * 聚合聊天远程操作、身份隔离的本地历史，以及媒体缓存能力。
  */
 
 import type { Result } from "@/utils";

src/data/storage/chat/local_chat_storage.ts

@@ -1,7 +1,7 @@
 "use client";
 
 /**
- * LocalChatStorage 完整实现（示范 2：IndexedDB via Dexie）
+ * IndexedDB-backed chat message storage.
  *
  * Dexie 实例可注入，便于测试用 fake-indexeddb 跑真 Dexie。
  *

src/data/storage/index.ts

@@ -1,17 +1,9 @@
 /**
- * @file Storage 公共导出
- *
- * unstorage 重构后：
- *   - 删除 `./local_storage`（原自定义 LocalStorage class 已被 unstorage 取代）
- *   - 业务层（AuthStorage / ChatStorage / UserStorage / AppStorage）继续走原接口
+ * @file Storage public exports.
  */
-export * from "@/utils/result";
 export * from "./storage_keys";
 export * from "./storage_migration";
 export * from "./app/app_storage";
-// NOTE: top-level `auth_storage.ts` is intentionally not re-exported here —
-// it conflicts with `auth/auth_storage.ts` (both define `AuthStorage`).
-// Import directly via `@/data/storage/auth/auth_storage` instead.
 export * from "./auth/auth_storage";
 export * from "./auth/iauth_storage";
 export * from "./chat/chat_storage";