refactor: migrate img tags to next/image and fix hook usage

src/stores/user/index.ts

@@ -8,8 +8,8 @@
  *   - Context 形状与初始值位于 user-context.ts
  *   - 事件联合位于 user-events.ts
  */
-export * from "./machine/user-state";
+export * from "./user-state";
 export * from "./user-context";
-export * from "./machine/user-events";
+export * from "./user-events";
 export * from "./user-types";
 export { userMachine } from "./user-machine";