feat(chat): migrate chat protocol to lock detail

src/data/storage/chat/local_chat_db.ts

@@ -12,6 +12,10 @@
  */
 
 import Dexie, { type Table } from "dexie";
+import type {
+  ChatImageData,
+  ChatLockDetailData,
+} from "@/data/schemas/chat";
 
 export interface LocalMessageRow {
   /** Dexie 自增主键（数据库内部使用，不暴露给 LocalMessage 类）。 */
@@ -19,12 +23,12 @@ export interface LocalMessageRow {
   /** 消息 id（来自 ChatMessage.id）。 */
   id: string;
   role: string;
+  type: string;
   content: string;
   createdAt: string;
-  imageUrl?: string | null;
-  isPrivate?: boolean | null;
-  privateLocked?: boolean | null;
-  privateHint?: string | null;
+  audioUrl?: string | null;
+  image?: ChatImageData;
+  lockDetail?: ChatLockDetailData;
   sessionId: string;
 }