chore(build): refactor codebase for production

src/stores/authStore.ts

@@ -16,6 +16,7 @@ interface AuthState {
   registrationMessage: string | null;
   login: (credentials: LoginRequest) => Promise<boolean>;
   register: (credentials: RegistrationRequest) => Promise<boolean>;
+  fetchUser: () => Promise<void>;
   logout: () => void;
   clearError: () => void;
 }
@@ -85,6 +86,18 @@ export const useAuthStore = create<AuthState>()(
         }
       },
 
+      fetchUser: async () => {
+        const token = useAuthStore.getState().token;
+        if (!token) return;
+
+        try {
+          const user = await api.fetchUser(token);
+          set({ user });
+        } catch (error) {
+          console.error("Failed to refresh user:", error);
+        }
+      },
+
       logout: () => {
         set({
           user: null,