Fix toast and data reset issues

- Resolved issue where budget creation toast appeared before expense creation toast.
- Fixed data reset causing a redirect to the login screen.

src/components/expenses/ExpenseForm.tsx

@@ -4,6 +4,7 @@ import { useForm } from 'react-hook-form';
 import { Form, FormField, FormItem, FormLabel } from '@/components/ui/form';
 import { Input } from '@/components/ui/input';
 import { Button } from '@/components/ui/button';
+import { Loader2 } from 'lucide-react';
 import ExpenseCategorySelector from './ExpenseCategorySelector';
 
 export interface ExpenseFormValues {
@@ -15,9 +16,10 @@ export interface ExpenseFormValues {
 interface ExpenseFormProps {
   onSubmit: (data: ExpenseFormValues) => void;
   onCancel: () => void;
+  isSubmitting?: boolean;
 }
 
-const ExpenseForm: React.FC<ExpenseFormProps> = ({ onSubmit, onCancel }) => {
+const ExpenseForm: React.FC<ExpenseFormProps> = ({ onSubmit, onCancel, isSubmitting = false }) => {
   const form = useForm<ExpenseFormValues>({
     defaultValues: {
       title: '',
@@ -47,7 +49,11 @@ const ExpenseForm: React.FC<ExpenseFormProps> = ({ onSubmit, onCancel }) => {
           render={({ field }) => (
             <FormItem>
               <FormLabel>제목</FormLabel>
-              <Input placeholder="지출 내역을 입력하세요" {...field} />
+              <Input 
+                placeholder="지출 내역을 입력하세요" 
+                {...field} 
+                disabled={isSubmitting}
+              />
             </FormItem>
           )}
         />
@@ -62,6 +68,7 @@ const ExpenseForm: React.FC<ExpenseFormProps> = ({ onSubmit, onCancel }) => {
                 placeholder="금액을 입력하세요" 
                 value={field.value}
                 onChange={handleAmountChange}
+                disabled={isSubmitting}
               />
             </FormItem>
           )}
@@ -75,7 +82,8 @@ const ExpenseForm: React.FC<ExpenseFormProps> = ({ onSubmit, onCancel }) => {
               <FormLabel>카테고리</FormLabel>
               <ExpenseCategorySelector 
                 value={field.value} 
-                onValueChange={(value) => field.onChange(value)} 
+                onValueChange={(value) => field.onChange(value)}
+                disabled={isSubmitting}
               />
             </FormItem>
           )}
@@ -86,14 +94,21 @@ const ExpenseForm: React.FC<ExpenseFormProps> = ({ onSubmit, onCancel }) => {
             type="button" 
             variant="outline" 
             onClick={onCancel}
+            disabled={isSubmitting}
           >
             취소
           </Button>
           <Button 
             type="submit"
             className="bg-neuro-income text-white hover:bg-neuro-income/90"
+            disabled={isSubmitting}
           >
-            저장
+            {isSubmitting ? (
+              <>
+                <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+                저장 중...
+              </>
+            ) : '저장'}
           </Button>
         </div>
       </form>