🎨 Feat: 대시보드 상세 페이지 - 스켈레톤 UI 적용

src/app/dashboard/[id]/page.tsx

@@ -141,11 +141,11 @@ export default function DashboardID() {
     })
   }
 
-  if (isLoading) return <p>loading...</p>
-  if (error) return <p>error...{error.message}</p>
+  if (isLoading) return <div className="BG-gray size-full"></div> // 스켈레톤 적용???⭐️⭐️
+
   return (
     <>
-      <div className="select-none">
+      <div className="h-screen select-none">
         <div
           className="flex min-h-screen mobile:flex-col tablet:flex-col"
           onTouchStart={handleTouchStart}
@@ -155,7 +155,7 @@ export default function DashboardID() {
           {columns?.map((column) => (
             <Column key={column.id} column={column} dashboardId={dashboardId} />
           ))}{' '}
-          <div className="BG-gray Border-column p-20 mobile:w-308 mobile:border-t-2 tablet:w-584 tablet:border-t-2">
+          <div className="BG-gray Border-column p-20 mobile:h-full mobile:w-308 mobile:border-t-2 tablet:h-full tablet:w-584 tablet:border-t-2">
             <button
               className="BG-white Border-btn m flex justify-center gap-12 whitespace-nowrap rounded-8 px-85 pb-20 pt-24 text-18 font-bold mobile:flex mobile:w-full mobile:justify-center mobile:px-50 mobile:py-20 mobile:text-16 tablet:flex tablet:w-full tablet:items-center"
               onClick={handleCreateColumn}

src/app/features/dashboard_Id/Column/Column.tsx

@@ -51,7 +51,12 @@ export default function Column({
     })
   }
 
-  if (isLoading) return <p>loading...</p> // 스켈레톤 적용???⭐️
+  if (isLoading)
+    return (
+      <div className="BG-gray Border-column w-354 shrink-0 p-20 pt-103 mobile:w-308 tablet:w-584">
+        <div className="BG-white size-full"></div>
+      </div>
+    ) // 스켈레톤 적용???⭐️
   if (isError) return toast.error('할 일 불러오기 실패')
 
   return (
@@ -132,14 +137,12 @@ export default function Column({
           />
         </CreateCardModal>
       )}
-
       {/* 무한 스크롤 관련 */}
       {isFetchingNextPage && (
         <p className="text-center text-sm text-gray-400">
           카드를 불러오는 중...
         </p>
       )}
-
       {!hasNextPage && (
         <p className="py-4 text-center text-sm text-gray-300">
           모든 카드를 불러왔습니다