fix: Improve number and slider input handling in V2Input and SplitPanelLayoutComponent

- Enhanced V2Input to convert string values from the database to numbers for number and slider inputs, ensuring correct display and functionality.
- Updated primary key retrieval logic in SplitPanelLayoutComponent to prioritize actual DB id values, improving data integrity.
- Simplified primary key handling by removing unnecessary checks and ensuring consistent usage of id fields.
- Improved user feedback in the SplitPanelLayoutComponent with clearer console logs for save operations and item selections.

frontend/components/v2/V2Input.tsx

@@ -771,9 +771,15 @@ export const V2Input = forwardRef<HTMLDivElement, V2InputProps>((props, ref) =>
         );
 
       case "number":
+        // DB에서 문자열("325")로 반환되는 경우도 숫자로 변환하여 표시
+        const numValue = typeof displayValue === "number"
+          ? displayValue
+          : (displayValue !== undefined && displayValue !== null && displayValue !== "" && !isNaN(Number(displayValue)))
+            ? Number(displayValue)
+            : undefined;
         return (
           <NumberInput
-            value={typeof displayValue === "number" ? displayValue : undefined}
+            value={numValue}
             onChange={(v) => {
               setAutoGeneratedValue(null);
               onChange?.(v ?? 0);
@@ -802,9 +808,15 @@ export const V2Input = forwardRef<HTMLDivElement, V2InputProps>((props, ref) =>
         );
 
       case "slider":
+        // DB에서 문자열로 반환되는 경우도 숫자로 변환
+        const sliderValue = typeof displayValue === "number"
+          ? displayValue
+          : (displayValue !== undefined && displayValue !== null && displayValue !== "" && !isNaN(Number(displayValue)))
+            ? Number(displayValue)
+            : (config.min ?? 0);
         return (
           <SliderInput
-            value={typeof displayValue === "number" ? displayValue : (config.min ?? 0)}
+            value={sliderValue}
             onChange={(v) => {
               setAutoGeneratedValue(null);
               onChange?.(v);

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

@@ -2105,22 +2105,16 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
         const editButtonConfig = componentConfig.leftPanel?.editButton;
         if (editButtonConfig?.mode === "modal" && editButtonConfig?.modalScreenId) {
           const leftTableName = componentConfig.leftPanel?.tableName || "";
-          const sourceColumn = componentConfig.leftPanel?.itemAddConfig?.sourceColumn || "id";
 
-          // Primary Key 찾기
-          let primaryKeyName = sourceColumn;
-          let primaryKeyValue = item[sourceColumn];
+          // Primary Key 찾기 - 실제 DB의 id 컬럼 값을 우선 사용
+          let primaryKeyValue = item.id || item.ID;
 
           if (primaryKeyValue === undefined || primaryKeyValue === null) {
-            if (item.id !== undefined && item.id !== null) {
-              primaryKeyName = "id";
-              primaryKeyValue = item.id;
-            } else if (item.ID !== undefined && item.ID !== null) {
-              primaryKeyName = "ID";
-              primaryKeyValue = item.ID;
-            } else {
+            // id가 없으면 sourceColumn 시도, 마지막으로 첫 번째 키
+            const sourceColumn = componentConfig.leftPanel?.itemAddConfig?.sourceColumn || "id";
+            primaryKeyValue = item[sourceColumn];
+            if (primaryKeyValue === undefined || primaryKeyValue === null) {
               const firstKey = Object.keys(item)[0];
-              primaryKeyName = firstKey;
               primaryKeyValue = item[firstKey];
             }
           }
@@ -2147,7 +2141,6 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
           console.log("✅ [SplitPanel] 좌측 수정 모달 화면 열기:", {
             screenId: editButtonConfig.modalScreenId,
             tableName: leftTableName,
-            primaryKeyName,
             primaryKeyValue,
           });
           return;
@@ -2282,9 +2275,8 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
       return;
     }
 
-    // Primary Key 찾기
-    const sourceColumn = componentConfig.leftPanel?.itemAddConfig?.sourceColumn || "id";
-    const primaryKey = selectedLeftItem[sourceColumn] || selectedLeftItem.id || selectedLeftItem.ID;
+    // Primary Key 찾기 - 실제 DB의 id 컬럼 값을 사용 (sourceColumn은 관계 연결용이므로 PK로 사용하지 않음)
+    const primaryKey = selectedLeftItem.id || selectedLeftItem.ID;
 
     if (!primaryKey) {
       toast({
@@ -2307,7 +2299,7 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
         cleanData.company_code = companyCode;
       }
 
-      console.log("📝 [SplitPanel] 커스텀 우측 패널 저장:", { tableName, sourceColumn, primaryKey, data: cleanData });
+      console.log("📝 [SplitPanel] 커스텀 우측 패널 저장:", { tableName, primaryKey, data: cleanData });
 
       const response = await dataApi.updateRecord(tableName, primaryKey, cleanData);
 
@@ -2529,7 +2521,8 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
         if (deleteModalPanel === "left") {
           loadLeftData();
           // 삭제된 항목이 선택되어 있었으면 선택 해제
-          if (selectedLeftItem && selectedLeftItem[sourceColumn] === primaryKey) {
+          const deletedId = deleteModalItem?.id || deleteModalItem?.ID;
+          if (selectedLeftItem && (selectedLeftItem.id === deletedId || selectedLeftItem.ID === deletedId)) {
             setSelectedLeftItem(null);
             setRightData(null);
           }
@@ -2968,6 +2961,7 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
                       const displayHeight = isResizingComp && resizeSize ? resizeSize.height : (comp.size?.height || 100);
                       
                       // 컴포넌트 데이터를 DynamicComponentRenderer 형식으로 변환
+                      // componentConfig의 주요 속성을 최상위로 펼침 (일반 화면의 overrides 플래트닝과 동일)
                       const componentData = {
                         id: comp.id,
                         type: "component" as const,
@@ -2977,6 +2971,11 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
                         size: { width: displayWidth, height: displayHeight },
                         componentConfig: comp.componentConfig || {},
                         style: comp.style || {},
+                        // 파일 업로드/미디어 등이 component.tableName, component.columnName을 직접 참조하므로 펼침
+                        tableName: comp.componentConfig?.tableName,
+                        columnName: comp.componentConfig?.columnName,
+                        webType: comp.componentConfig?.webType,
+                        inputType: comp.inputType || comp.componentConfig?.inputType,
                       };
 
                       if (isDesignMode) {
@@ -3981,6 +3980,15 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
               })()
             ) : componentConfig.rightPanel?.displayMode === "custom" ? (
               // 🆕 커스텀 모드: 패널 안에 자유롭게 컴포넌트 배치
+              // 실행 모드에서 좌측 미선택 시 안내 메시지 표시
+              !isDesignMode && !selectedLeftItem ? (
+                <div className="flex h-full items-center justify-center">
+                  <div className="text-muted-foreground text-center text-sm">
+                    <p className="mb-2">좌측에서 항목을 선택하세요</p>
+                    <p className="text-xs">선택한 항목의 상세 정보가 여기에 표시됩니다</p>
+                  </div>
+                </div>
+              ) : (
               <div 
                 className="relative h-full w-full"
                 data-split-panel-container="true"
@@ -4002,6 +4010,7 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
                       const displayHeight = isResizingComp && resizeSize ? resizeSize.height : (comp.size?.height || 100);
                       
                       // 컴포넌트 데이터를 DynamicComponentRenderer 형식으로 변환
+                      // componentConfig의 주요 속성을 최상위로 펼침 (일반 화면의 overrides 플래트닝과 동일)
                       const componentData = {
                         id: comp.id,
                         type: "component" as const,
@@ -4011,6 +4020,11 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
                         size: { width: displayWidth, height: displayHeight },
                         componentConfig: comp.componentConfig || {},
                         style: comp.style || {},
+                        // 파일 업로드/미디어 등이 component.tableName, component.columnName을 직접 참조하므로 펼침
+                        tableName: comp.componentConfig?.tableName,
+                        columnName: comp.componentConfig?.columnName,
+                        webType: comp.componentConfig?.webType,
+                        inputType: comp.inputType || comp.componentConfig?.inputType,
                       };
 
                       if (isDesignMode) {
@@ -4201,6 +4215,7 @@ export const SplitPanelLayoutComponent: React.FC<SplitPanelLayoutComponentProps>
                   </div>
                 )}
               </div>
+              )
             ) : isLoadingRight ? (
               // 로딩 중
               <div className="flex h-full items-center justify-center">