docs: update full-screen analysis and V2 component usage guide

- Revised the full-screen analysis document to reflect the latest updates, including the purpose and core rules for screen development.
- Expanded the V2 component usage guide to include a comprehensive catalog of components, their configurations, and usage guidelines for LLM and chatbot applications.
- Added a summary of the system architecture and clarified the implementation methods for user business screens and admin menus.
- Enhanced the documentation to serve as a reference for AI agents and screen designers, ensuring adherence to the established guidelines.

These updates aim to improve clarity and usability for developers and designers working with the WACE ERP screen composition system.

Made-with: Cursor

frontend/lib/registry/components/selected-items-detail-input/SelectedItemsDetailInputComponent.tsx

@@ -13,6 +13,7 @@ import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { formatNumber as centralFormatNumber } from "@/lib/formatting";
 import {
   X,
   Check,
@@ -1286,7 +1287,7 @@ export const SelectedItemsDetailInputComponent: React.FC<SelectedItemsDetailInpu
         // 숫자 포맷팅 헬퍼: 콤마 표시 + 실제 값은 숫자만 저장
         const rawNum = value ? String(value).replace(/,/g, "") : "";
         const displayNum = rawNum && !isNaN(Number(rawNum))
-          ? new Intl.NumberFormat("ko-KR").format(Number(rawNum))
+          ? centralFormatNumber(Number(rawNum))
           : rawNum;
 
         // 계산된 단가는 읽기 전용 + 강조 표시
@@ -1511,9 +1512,9 @@ export const SelectedItemsDetailInputComponent: React.FC<SelectedItemsDetailInpu
             if (matched) return matched.label;
           }
 
-          // 숫자는 천 단위 구분
+          // 숫자는 천 단위 구분 (공통 formatNumber 사용)
           if (renderType === "number" && !isNaN(Number(strValue))) {
-            return new Intl.NumberFormat("ko-KR").format(Number(strValue));
+            return centralFormatNumber(Number(strValue));
           }
 
           return strValue;
@@ -1646,11 +1647,10 @@ export const SelectedItemsDetailInputComponent: React.FC<SelectedItemsDetailInpu
 
                 switch (displayItem.format) {
                   case "currency":
-                    // 천 단위 구분
-                    formattedValue = new Intl.NumberFormat("ko-KR").format(Number(fieldValue) || 0);
+                    formattedValue = centralFormatNumber(Number(fieldValue) || 0);
                     break;
                   case "number":
-                    formattedValue = new Intl.NumberFormat("ko-KR").format(Number(fieldValue) || 0);
+                    formattedValue = centralFormatNumber(Number(fieldValue) || 0);
                     break;
                   case "date":
                     // YYYY.MM.DD 형식