refactor: Enhance screen layout retrieval logic for multi-tenancy support

- Updated the ScreenManagementService to prioritize fetching layouts based on layer_id, ensuring that only the default layer is retrieved for users.
- Implemented logic for administrators to re-query layouts based on the screen definition's company_code when no layout is found.
- Adjusted the BomItemEditorComponent to dynamically render table cells based on configuration, improving flexibility and usability in the BOM item editor.
- Introduced category options loading for dynamic cell rendering, enhancing the user experience in item editing.

backend-node/src/services/screenManagementService.ts

@@ -1721,18 +1721,28 @@ export class ScreenManagementService {
       throw new Error("이 화면의 레이아웃을 조회할 권한이 없습니다.");
     }
 
-    // 🆕 V2 테이블 우선 조회 (회사별 → 공통(*))
+    // V2 테이블 우선 조회: 기본 레이어(layer_id=1)만 가져옴
+    // layer_id 필터 없이 queryOne 하면 조건부 레이어가 반환될 수 있음
     let v2Layout = await queryOne<{ layout_data: any }>(
       `SELECT layout_data FROM screen_layouts_v2
-       WHERE screen_id = $1 AND company_code = $2`,
+       WHERE screen_id = $1 AND company_code = $2 AND layer_id = 1`,
       [screenId, companyCode],
     );
 
-    // 회사별 레이아웃 없으면 공통(*) 조회
+    // 최고관리자(*): 화면 정의의 company_code로 재조회
+    if (!v2Layout && companyCode === "*" && existingScreen.company_code && existingScreen.company_code !== "*") {
+      v2Layout = await queryOne<{ layout_data: any }>(
+        `SELECT layout_data FROM screen_layouts_v2
+         WHERE screen_id = $1 AND company_code = $2 AND layer_id = 1`,
+        [screenId, existingScreen.company_code],
+      );
+    }
+
+    // 일반 사용자: 회사별 레이아웃 없으면 공통(*) 조회
     if (!v2Layout && companyCode !== "*") {
       v2Layout = await queryOne<{ layout_data: any }>(
         `SELECT layout_data FROM screen_layouts_v2
-         WHERE screen_id = $1 AND company_code = '*'`,
+         WHERE screen_id = $1 AND company_code = '*' AND layer_id = 1`,
         [screenId],
       );
     }
@@ -5302,7 +5312,22 @@ export class ScreenManagementService {
       [screenId, companyCode, layerId],
     );
 
-    // 회사별 레이어가 없으면 공통(*) 조회
+    // 최고관리자(*): 화면 정의의 company_code로 재조회
+    if (!layout && companyCode === "*") {
+      const screenDef = await queryOne<{ company_code: string }>(
+        `SELECT company_code FROM screen_definitions WHERE screen_id = $1 LIMIT 1`,
+        [screenId],
+      );
+      if (screenDef && screenDef.company_code && screenDef.company_code !== "*") {
+        layout = await queryOne<{ layout_data: any; layer_name: string; condition_config: any }>(
+          `SELECT layout_data, layer_name, condition_config FROM screen_layouts_v2
+           WHERE screen_id = $1 AND company_code = $2 AND layer_id = $3`,
+          [screenId, screenDef.company_code, layerId],
+        );
+      }
+    }
+
+    // 일반 사용자: 회사별 레이어가 없으면 공통(*) 조회
     if (!layout && companyCode !== "*") {
       layout = await queryOne<{ layout_data: any; layer_name: string; condition_config: any }>(
         `SELECT layout_data, layer_name, condition_config FROM screen_layouts_v2