feat: 매장 등록·표시 금액 단위 만원으로 변경

- /stores/new 폼: 권리금/창업비용/월매출/월수익/보증금/월세 라벨을
  "(원)" → "(만원)"으로 변경, placeholder도 만원 단위로 (예: 12000)
- actions.ts: 입력값을 × 10000 변환 후 DB 저장 (DB는 원 단위 유지)
- /stores/[id] 상세: formatKRW에서 원→억/만원 표시 (예: 1억 9500만원)
- /stores 리스트: "만"/"억" 표기에 "원" 접미 추가 (예: 9900만원, 1.2억원)

apps/web/src/app/stores/[id]/page.tsx

@@ -46,7 +46,15 @@ async function handleDeleteDraft(formData: FormData) {
 
 function formatKRW(value: number | null | undefined): string {
   if (value == null) return '-';
-  return `${Number(value).toLocaleString('ko-KR')}원`;
+  // DB는 원 단위 → 표시는 만원/억 단위로
+  const won = Number(value);
+  if (won === 0) return '0원';
+  const eok = Math.floor(won / 100_000_000);
+  const man = Math.floor((won % 100_000_000) / 10_000);
+  if (eok > 0 && man > 0) return `${eok}억 ${man.toLocaleString('ko-KR')}만원`;
+  if (eok > 0) return `${eok}억원`;
+  if (man > 0) return `${man.toLocaleString('ko-KR')}만원`;
+  return `${won.toLocaleString('ko-KR')}원`;
 }
 
 function formatMargin(sales?: number | null, profit?: number | null): string {

apps/web/src/app/stores/new/actions.ts

@@ -91,6 +91,11 @@ export async function createStoreDraftAction(
     locationHighlight ||
     saleReason;
 
+  // 폼 입력은 만원 단위 → DB는 원 단위로 저장 (× 10000)
+  const MAN = 10000;
+  const toWon = (v: string | null) => (v ? Number(v) * MAN : undefined);
+  const toWonRequired = (v: string | null) => (v ? Number(v) * MAN : 0);
+
   const input: CreateStoreDraftInput = {
     ownerUserId: session.user.dbId,
     listingTitle,
@@ -100,9 +105,9 @@ export async function createStoreDraftAction(
     ...(depositAmount || monthlyRentAmount || premiumAmount || remainingLeaseMonths
       ? {
           lease: {
-            depositAmount: depositAmount ? Number(depositAmount) : 0,
+            depositAmount: toWonRequired(depositAmount),
-            monthlyRentAmount: monthlyRentAmount ? Number(monthlyRentAmount) : 0,
+            monthlyRentAmount: toWonRequired(monthlyRentAmount),
-            premiumAmount: premiumAmount ? Number(premiumAmount) : 0,
+            premiumAmount: toWonRequired(premiumAmount),
             remainingLeaseMonths: remainingLeaseMonths
               ? parseInt(remainingLeaseMonths, 10)
               : undefined,
@@ -112,10 +117,10 @@ export async function createStoreDraftAction(
     ...(hasSale
       ? {
           sale: {
-            premiumAmount: premiumAmount ? Number(premiumAmount) : undefined,
+            premiumAmount: toWon(premiumAmount),
-            monthlySalesAmount: monthlySalesAmount ? Number(monthlySalesAmount) : undefined,
+            monthlySalesAmount: toWon(monthlySalesAmount),
-            monthlyProfitAmount: monthlyProfitAmount ? Number(monthlyProfitAmount) : undefined,
+            monthlyProfitAmount: toWon(monthlyProfitAmount),
-            startupCostAmount: startupCostAmount ? Number(startupCostAmount) : undefined,
+            startupCostAmount: toWon(startupCostAmount),
             listingDescription: listingDescription || undefined,
             locationHighlight: locationHighlight || undefined,
             saleReason: saleReason || undefined,

apps/web/src/app/stores/new/page.tsx

@@ -124,21 +124,21 @@ export default function NewStorePage() {
           <div className="space-y-4 rounded-2xl border border-ink/5 bg-white/70 backdrop-blur-sm p-6">
             <div className="grid grid-cols-2 gap-4">
               <div>
-                <label className="block text-sm text-ink-muted mb-1">권리금 (원)</label>
+                <label className="block text-sm text-ink-muted mb-1">권리금 (만원)</label>
                 <input
                   type="number"
                   name="premiumAmount"
-                  placeholder="120000000"
+                  placeholder="12000"
                   defaultValue={state.fieldValues?.premiumAmount}
                   className="w-full rounded-xl border border-ink/10 bg-white/70 px-4 py-3 text-sm text-ink focus:border-warm-500 focus:ring-2 focus:ring-warm-500/20 focus:outline-none"
                 />
               </div>
               <div>
-                <label className="block text-sm text-ink-muted mb-1">창업비용 (원)</label>
+                <label className="block text-sm text-ink-muted mb-1">창업비용 (만원)</label>
                 <input
                   type="number"
                   name="startupCostAmount"
-                  placeholder="150000000"
+                  placeholder="15000"
                   defaultValue={state.fieldValues?.startupCostAmount}
                   className="w-full rounded-xl border border-ink/10 bg-white/70 px-4 py-3 text-sm text-ink focus:border-warm-500 focus:ring-2 focus:ring-warm-500/20 focus:outline-none"
                 />
@@ -146,21 +146,21 @@ export default function NewStorePage() {
             </div>
             <div className="grid grid-cols-2 gap-4">
               <div>
-                <label className="block text-sm text-ink-muted mb-1">월매출 (원)</label>
+                <label className="block text-sm text-ink-muted mb-1">월매출 (만원)</label>
                 <input
                   type="number"
                   name="monthlySalesAmount"
-                  placeholder="85000000"
+                  placeholder="8500"
                   defaultValue={state.fieldValues?.monthlySalesAmount}
                   className="w-full rounded-xl border border-ink/10 bg-white/70 px-4 py-3 text-sm text-ink focus:border-warm-500 focus:ring-2 focus:ring-warm-500/20 focus:outline-none"
                 />
               </div>
               <div>
-                <label className="block text-sm text-ink-muted mb-1">월수익 (원)</label>
+                <label className="block text-sm text-ink-muted mb-1">월수익 (만원)</label>
                 <input
                   type="number"
                   name="monthlyProfitAmount"
-                  placeholder="9900000"
+                  placeholder="990"
                   defaultValue={state.fieldValues?.monthlyProfitAmount}
                   className="w-full rounded-xl border border-ink/10 bg-white/70 px-4 py-3 text-sm text-ink focus:border-warm-500 focus:ring-2 focus:ring-warm-500/20 focus:outline-none"
                 />
@@ -205,21 +205,21 @@ export default function NewStorePage() {
           <div className="space-y-4 rounded-2xl border border-ink/5 bg-white/70 backdrop-blur-sm p-6">
             <div className="grid grid-cols-2 gap-4">
               <div>
-                <label className="block text-sm text-ink-muted mb-1">보증금 (원)</label>
+                <label className="block text-sm text-ink-muted mb-1">보증금 (만원)</label>
                 <input
                   type="number"
                   name="depositAmount"
-                  placeholder="50000000"
+                  placeholder="5000"
                   defaultValue={state.fieldValues?.depositAmount}
                   className="w-full rounded-xl border border-ink/10 bg-white/70 px-4 py-3 text-sm text-ink focus:border-warm-500 focus:ring-2 focus:ring-warm-500/20 focus:outline-none"
                 />
               </div>
               <div>
-                <label className="block text-sm text-ink-muted mb-1">월세 (원)</label>
+                <label className="block text-sm text-ink-muted mb-1">월세 (만원)</label>
                 <input
                   type="number"
                   name="monthlyRentAmount"
-                  placeholder="3000000"
+                  placeholder="300"
                   defaultValue={state.fieldValues?.monthlyRentAmount}
                   className="w-full rounded-xl border border-ink/10 bg-white/70 px-4 py-3 text-sm text-ink focus:border-warm-500 focus:ring-2 focus:ring-warm-500/20 focus:outline-none"
                 />

apps/web/src/app/stores/page.tsx

@@ -10,11 +10,11 @@ function formatKRWShort(value: number | null | undefined): string {
   const v = Number(value);
   if (v >= 100_000_000) {
     const eok = v / 100_000_000;
-    return `${Number.isInteger(eok) ? eok : eok.toFixed(1)}억`;
+    return `${Number.isInteger(eok) ? eok : eok.toFixed(1)}억원`;
   }
   if (v >= 10_000) {
     const man = Math.round(v / 10_000);
-    return `${man.toLocaleString('ko-KR')}만`;
+    return `${man.toLocaleString('ko-KR')}만원`;
   }
   return `${v.toLocaleString('ko-KR')}원`;
 }