feat: Enhance V2Select component with automatic value normalization and update handling

- Implemented automatic normalization of legacy plain text values to category codes, improving data consistency.
- Added logic to handle comma-separated values, allowing for better processing of complex input formats.
- Integrated automatic updates to the onChange handler when the normalized value differs from the original, ensuring accurate data saving.
- Updated various select components to utilize the resolved value for consistent behavior across different selection types.

frontend/components/v2/V2Select.tsx

@@ -820,6 +820,42 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
         loadOptions();
     }, [source, entityTable, entityValueColumn, entityLabelColumn, codeGroup, table, valueColumn, labelColumn, apiEndpoint, staticOptions, optionsLoaded, hierarchical, parentValue]);
 
+    // 레거시 평문값 → 카테고리 코드 자동 정규화 (한글 텍스트로 저장된 데이터 대응)
+    const resolvedValue = useMemo(() => {
+      if (!value || options.length === 0) return value;
+
+      const resolveOne = (v: string): string => {
+        if (options.some(o => o.value === v)) return v;
+        const trimmed = v.trim();
+        const match = options.find(o => {
+          const cleanLabel = o.label.replace(/^[\s└]+/, '').trim();
+          return cleanLabel === trimmed;
+        });
+        return match ? match.value : v;
+      };
+
+      if (Array.isArray(value)) {
+        const resolved = value.map(resolveOne);
+        return resolved.every((v, i) => v === value[i]) ? value : resolved;
+      }
+
+      // 콤마 구분 복합값 처리 (e.g., "구매품,판매품,CAT_xxx")
+      if (typeof value === "string" && value.includes(",")) {
+        const parts = value.split(",");
+        const resolved = parts.map(p => resolveOne(p.trim()));
+        const result = resolved.join(",");
+        return result === value ? value : result;
+      }
+
+      return resolveOne(value);
+    }, [value, options]);
+
+    // 정규화 결과가 원본과 다르면 onChange로 자동 업데이트 (저장 시 코드 변환)
+    useEffect(() => {
+      if (!onChange || options.length === 0 || !value || value === resolvedValue) return;
+      onChange(resolvedValue as string | string[]);
+    }, [resolvedValue]); // eslint-disable-line react-hooks/exhaustive-deps
+
     // 같은 폼에서 참조 테이블(entityTable) 컬럼을 사용하는 다른 컴포넌트 자동 감지
     const autoFillTargets = useMemo(() => {
       if (source !== "entity" || !entityTable || !allComponents) return [];
@@ -945,7 +981,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <DropdownSelect
               options={options}
-              value={value}
+              value={resolvedValue}
               onChange={handleChangeWithAutoFill}
               placeholder="선택"
               searchable={config.mode === "combobox" ? true : config.searchable}
@@ -961,7 +997,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <RadioSelect
               options={options}
-              value={typeof value === "string" ? value : value?.[0]}
+              value={typeof resolvedValue === "string" ? resolvedValue : resolvedValue?.[0]}
               onChange={(v) => handleChangeWithAutoFill(v)}
               disabled={isDisabled}
             />
@@ -972,7 +1008,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <CheckSelect
               options={options}
-              value={Array.isArray(value) ? value : value ? [value] : []}
+              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
               onChange={handleChangeWithAutoFill}
               maxSelect={config.maxSelect}
               disabled={isDisabled}
@@ -983,7 +1019,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <TagSelect
               options={options}
-              value={Array.isArray(value) ? value : value ? [value] : []}
+              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
               onChange={handleChangeWithAutoFill}
               maxSelect={config.maxSelect}
               disabled={isDisabled}
@@ -994,7 +1030,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <TagboxSelect
               options={options}
-              value={Array.isArray(value) ? value : value ? [value] : []}
+              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
               onChange={handleChangeWithAutoFill}
               placeholder={config.placeholder || "선택하세요"}
               maxSelect={config.maxSelect}
@@ -1007,7 +1043,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <ToggleSelect
               options={options}
-              value={typeof value === "string" ? value : value?.[0]}
+              value={typeof resolvedValue === "string" ? resolvedValue : resolvedValue?.[0]}
               onChange={(v) => handleChangeWithAutoFill(v)}
               disabled={isDisabled}
             />
@@ -1017,7 +1053,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <SwapSelect
               options={options}
-              value={Array.isArray(value) ? value : value ? [value] : []}
+              value={Array.isArray(resolvedValue) ? resolvedValue : resolvedValue ? [resolvedValue] : []}
               onChange={handleChangeWithAutoFill}
               maxSelect={config.maxSelect}
               disabled={isDisabled}
@@ -1028,7 +1064,7 @@ export const V2Select = forwardRef<HTMLDivElement, V2SelectProps>(
           return (
             <DropdownSelect
               options={options}
-              value={value}
+              value={resolvedValue}
               onChange={handleChangeWithAutoFill}
               disabled={isDisabled}
               style={heightStyle}