feat: 예산 예상수입 월별 + 계좌 관리 드래그앤드랍 정렬

- 예산: 예상 수입을 해당 월별로 조회/저장(월 이동 시 갱신)
- 계좌 관리: SortableJS 드래그 정렬(터치 지원), 타입별 순서 저장

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/api/accountApi.js

@@ -65,11 +65,11 @@ export const accountApi = {
   budgetPeriod({ unit, year, month }) {
     return http.get('/account/budgets/period', { params: { unit, year, month } })
   },
-  expectedIncome() {
-    return http.get('/account/budgets/income')
+  expectedIncome({ year, month }) {
+    return http.get('/account/budgets/income', { params: { year, month } })
   },
-  setExpectedIncome(expectedIncome) {
-    return http.put('/account/budgets/income', { expectedIncome })
+  setExpectedIncome({ year, month, expectedIncome }) {
+    return http.put('/account/budgets/income', { expectedIncome }, { params: { year, month } })
   },
   createBudget(payload) {
     return http.post('/account/budgets', payload)
@@ -89,6 +89,9 @@ export const accountApi = {
   removeWallet(id) {
     return http.delete(`/account/wallets/${id}`)
   },
+  reorderWallets(type, ids) {
+    return http.put('/account/wallets/reorder', { type, ids })
+  },
   walletEntries(id) {
     return http.get(`/account/wallets/${id}/entries`)
   },