feat: Enhance entity options retrieval with additional fields support

- Updated the `getEntityOptions` function to accept an optional `fields` parameter, allowing clients to specify additional columns to be retrieved.
- Implemented logic to dynamically include extra columns in the SQL query based on the provided `fields`, improving flexibility in data retrieval.
- Enhanced the response to indicate whether extra fields were included, facilitating better client-side handling of the data.
- Added logging for authentication failures in the `AuthGuard` component to improve debugging and user experience.
- Integrated auto-fill functionality in the `V2Select` component to automatically populate fields based on selected entity references, enhancing user interaction.
- Updated the `ItemSearchModal` to support multi-selection of items, improving usability in item management scenarios.

backend-node/src/controllers/entitySearchController.ts

@@ -115,7 +115,7 @@ export async function getDistinctColumnValues(req: AuthenticatedRequest, res: Re
 export async function getEntityOptions(req: AuthenticatedRequest, res: Response) {
   try {
     const { tableName } = req.params;
-    const { value = "id", label = "name" } = req.query;
+    const { value = "id", label = "name", fields } = req.query;
 
     // tableName 유효성 검증
     if (!tableName || tableName === "undefined" || tableName === "null") {
@@ -167,9 +167,21 @@ export async function getEntityOptions(req: AuthenticatedRequest, res: Response)
       ? `WHERE ${whereConditions.join(" AND ")}`
       : "";
 
+    // autoFill용 추가 컬럼 처리
+    let extraColumns = "";
+    if (fields && typeof fields === "string") {
+      const requestedFields = fields.split(",").map((f) => f.trim()).filter(Boolean);
+      const validExtra = requestedFields.filter(
+        (f) => existingColumns.has(f) && f !== valueColumn && f !== effectiveLabelColumn
+      );
+      if (validExtra.length > 0) {
+        extraColumns = ", " + validExtra.map((f) => `"${f}"`).join(", ");
+      }
+    }
+
     // 쿼리 실행 (최대 500개)
     const query = `
-      SELECT ${valueColumn} as value, ${effectiveLabelColumn} as label
+      SELECT ${valueColumn} as value, ${effectiveLabelColumn} as label${extraColumns}
       FROM ${tableName}
       ${whereClause}
       ORDER BY ${effectiveLabelColumn} ASC
@@ -184,6 +196,7 @@ export async function getEntityOptions(req: AuthenticatedRequest, res: Response)
       labelColumn: effectiveLabelColumn,
       companyCode,
       rowCount: result.rowCount,
+      extraFields: extraColumns ? true : false,
     });
 
     res.json({