feat: Refactor EditModal for improved INSERT/UPDATE handling

- Introduced a new state flag `isCreateModeFlag` to determine the mode (INSERT or UPDATE) directly from the event, enhancing clarity in the modal's behavior.
- Updated the logic for initializing `originalData` and determining the mode, ensuring that the modal correctly identifies whether to create or update based on the provided data.
- Refactored the update logic to send the entire `formData` without relying on `originalData`, streamlining the update process.
- Enhanced logging for better debugging and understanding of the modal's state during operations.

frontend/lib/registry/components/v2-split-panel-layout/SplitPanelLayoutConfigPanel.tsx

@@ -1528,7 +1528,7 @@ export const SplitPanelLayoutConfigPanel: React.FC<SplitPanelLayoutConfigPanelPr
           {
             id: "basic",
             title: "기본 설정",
-            desc: `${relationshipType === "detail" ? "상세" : "조건 필터"} | 비율 ${config.splitRatio || 30}%`,
+            desc: `${relationshipType === "detail" ? "1건 상세보기" : "연관 목록"} | 비율 ${config.splitRatio || 30}%`,
             icon: Settings2,
           },
           {
@@ -1577,7 +1577,8 @@ export const SplitPanelLayoutConfigPanel: React.FC<SplitPanelLayoutConfigPanelPr
           <div className="space-y-6">
       {/* 관계 타입 선택 */}
       <div className="space-y-3 rounded-lg border border-border/50 bg-muted/40 p-4">
-        <h3 className="border-l-2 border-l-primary/40 pl-2 text-sm font-semibold">패널 관계 타입</h3>
+        <h3 className="border-l-2 border-l-primary/40 pl-2 text-sm font-semibold">우측 패널 표시 방식</h3>
+        <p className="text-muted-foreground text-xs">좌측 항목 선택 시 우측에 어떤 형태로 데이터를 보여줄지 설정합니다</p>
         <Select
           value={relationshipType}
           onValueChange={(value: "join" | "detail") => {
@@ -1595,21 +1596,21 @@ export const SplitPanelLayoutConfigPanel: React.FC<SplitPanelLayoutConfigPanelPr
           }}
         >
           <SelectTrigger className="h-10 bg-white">
-            <SelectValue placeholder="관계 타입 선택">
-              {relationshipType === "detail" ? "상세 (DETAIL)" : "조건 필터 (FILTERED)"}
+            <SelectValue placeholder="표시 방식 선택">
+              {relationshipType === "detail" ? "1건 상세보기" : "연관 목록"}
             </SelectValue>
           </SelectTrigger>
           <SelectContent>
             <SelectItem value="detail">
               <div className="flex flex-col py-1">
-                <span className="text-sm font-medium">상세 (DETAIL)</span>
-                <span className="text-xs text-gray-500">좌측 목록 → 우측 상세 정보 (동일 테이블)</span>
+                <span className="text-sm font-medium">1건 상세보기</span>
+                <span className="text-xs text-gray-500">좌측 클릭 시 해당 항목의 상세 정보 표시 (같은 테이블)</span>
               </div>
             </SelectItem>
             <SelectItem value="join">
               <div className="flex flex-col py-1">
-                <span className="text-sm font-medium">조건 필터 (FILTERED)</span>
-                <span className="text-xs text-gray-500">좌측 선택 항목 기준으로 우측 테이블 필터링</span>
+                <span className="text-sm font-medium">연관 목록</span>
+                <span className="text-xs text-gray-500">좌측 클릭 시 연관된 데이터 목록 표시 / 미선택 시 전체 표시</span>
               </div>
             </SelectItem>
           </SelectContent>
@@ -2085,7 +2086,7 @@ export const SplitPanelLayoutConfigPanel: React.FC<SplitPanelLayoutConfigPanelPr
           <div className="space-y-4">
       {/* 우측 패널 설정 */}
       <div className="space-y-4 rounded-lg border border-border/50 bg-muted/40 p-4">
-        <h3 className="border-l-2 border-l-primary/40 pl-2 text-sm font-semibold">우측 패널 설정 ({relationshipType === "detail" ? "상세" : "조건 필터"})</h3>
+        <h3 className="border-l-2 border-l-primary/40 pl-2 text-sm font-semibold">우측 패널 설정 ({relationshipType === "detail" ? "1건 상세보기" : "연관 목록"})</h3>
 
         <div className="space-y-2">
           <Label>패널 제목</Label>