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

src/stores/user/user-state.ts

@@ -0,0 +1,20 @@
+/**
+ * User 状态机：State 形状 + 初始值
+ */
+import type { UserView } from "@/models/user/user";
+
+export interface UserState {
+  currentUser: UserView | null;
+  pronouns: string;
+  coinBalance: number;
+  isLoading: boolean;
+  avatarUrl: string | null;
+}
+
+export const initialState: UserState = {
+  currentUser: null,
+  pronouns: "He",
+  coinBalance: 45,
+  isLoading: false,
+  avatarUrl: null,
+};