refactor: 전체 프론트엔드 하드코딩 색상 → CSS 변수 일괄 치환

447+ 파일, 4500+ 줄 변경:
- gray-* → border/bg-muted/text-foreground/text-muted-foreground
- blue-* → primary/ring
- red-* → destructive
- green-* → emerald (일관성)
- indigo-* → primary
- yellow/orange → amber (통일)
- dark mode 변형도 시맨틱 토큰으로 변환

Made-with: Cursor

frontend/components/dataflow/node-editor/nodes/DeleteActionNode.tsx

@@ -13,14 +13,14 @@ export const DeleteActionNode = memo(({ data, selected }: NodeProps<DeleteAction
   return (
     <div
       className={`min-w-[250px] rounded-lg border-2 bg-white shadow-md transition-all ${
-        selected ? "border-red-500 shadow-lg" : "border-gray-200"
+        selected ? "border-destructive shadow-lg" : "border-border"
       }`}
     >
       {/* 입력 핸들 */}
-      <Handle type="target" position={Position.Left} className="!h-3 !w-3 !border-2 !border-red-500 !bg-white" />
+      <Handle type="target" position={Position.Left} className="!h-3 !w-3 !border-2 !border-destructive !bg-white" />
 
       {/* 헤더 */}
-      <div className="flex items-center gap-2 rounded-t-lg bg-red-500 px-3 py-2 text-white">
+      <div className="flex items-center gap-2 rounded-t-lg bg-destructive px-3 py-2 text-white">
         <Trash2 className="h-4 w-4" />
         <div className="flex-1">
           <div className="text-sm font-semibold">DELETE</div>
@@ -30,30 +30,30 @@ export const DeleteActionNode = memo(({ data, selected }: NodeProps<DeleteAction
 
       {/* 본문 */}
       <div className="p-3">
-        <div className="mb-2 text-xs font-medium text-gray-500">타겟: {data.targetTable}</div>
+        <div className="mb-2 text-xs font-medium text-muted-foreground">타겟: {data.targetTable}</div>
 
         {/* WHERE 조건 */}
         {data.whereConditions && data.whereConditions.length > 0 ? (
           <div className="space-y-1">
-            <div className="text-xs font-medium text-gray-700">WHERE 조건:</div>
+            <div className="text-xs font-medium text-foreground">WHERE 조건:</div>
             <div className="max-h-[120px] space-y-1 overflow-y-auto">
               {data.whereConditions.map((condition, idx) => (
-                <div key={idx} className="rounded bg-red-50 px-2 py-1 text-xs">
-                  <span className="font-mono text-gray-700">{condition.field}</span>
-                  <span className="mx-1 text-red-600">{condition.operator}</span>
-                  <span className="text-gray-600">{condition.sourceField || condition.staticValue || "?"}</span>
+                <div key={idx} className="rounded bg-destructive/10 px-2 py-1 text-xs">
+                  <span className="font-mono text-foreground">{condition.field}</span>
+                  <span className="mx-1 text-destructive">{condition.operator}</span>
+                  <span className="text-muted-foreground">{condition.sourceField || condition.staticValue || "?"}</span>
                 </div>
               ))}
             </div>
           </div>
         ) : (
-          <div className="rounded bg-yellow-50 p-2 text-xs text-yellow-700">⚠️ 조건 없음 - 모든 데이터 삭제 주의!</div>
+          <div className="rounded bg-amber-50 p-2 text-xs text-yellow-700">⚠️ 조건 없음 - 모든 데이터 삭제 주의!</div>
         )}
 
         {/* 경고 메시지 */}
-        <div className="mt-3 flex items-start gap-2 rounded border border-red-200 bg-red-50 p-2">
-          <AlertTriangle className="h-3 w-3 flex-shrink-0 text-red-600" />
-          <div className="text-xs text-red-700">
+        <div className="mt-3 flex items-start gap-2 rounded border border-destructive/20 bg-destructive/10 p-2">
+          <AlertTriangle className="h-3 w-3 flex-shrink-0 text-destructive" />
+          <div className="text-xs text-destructive">
             <div className="font-medium">주의</div>
             <div className="mt-0.5">삭제된 데이터는 복구할 수 없습니다</div>
           </div>
@@ -62,13 +62,13 @@ export const DeleteActionNode = memo(({ data, selected }: NodeProps<DeleteAction
         {/* 옵션 */}
         {data.options?.requireConfirmation && (
           <div className="mt-2">
-            <span className="rounded bg-red-100 px-1.5 py-0.5 text-xs text-red-700">실행 전 확인 필요</span>
+            <span className="rounded bg-destructive/10 px-1.5 py-0.5 text-xs text-destructive">실행 전 확인 필요</span>
           </div>
         )}
       </div>
 
       {/* 출력 핸들 */}
-      <Handle type="source" position={Position.Right} className="!h-3 !w-3 !border-2 !border-red-500 !bg-white" />
+      <Handle type="source" position={Position.Right} className="!h-3 !w-3 !border-2 !border-destructive !bg-white" />
     </div>
   );
 });