feat: Implement searchable category combobox in item info page

- Added a new CategoryCombobox component for improved category selection.
- Integrated the combobox into the item info form, replacing the previous select component.
- Enhanced data handling to support multiple category selections with comma separation.
- Updated selling and standard price fields to format numbers correctly.

These changes aim to enhance user experience by providing a more intuitive and flexible category selection method.

frontend/app/(main)/COMPANY_16/master-data/item-info/page.tsx

@@ -33,9 +33,11 @@ import { DynamicSearchFilter, FilterValue } from "@/components/common/DynamicSea
 import { exportToExcel } from "@/lib/utils/excelExport";
 import {
   Plus, Trash2, Save, Loader2, FileSpreadsheet, Download,
-  Pencil, Copy, Settings2,
+  Pencil, Copy, Settings2, Check, ChevronsUpDown,
 } from "lucide-react";
 import { Badge } from "@/components/ui/badge";
+import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
+import { Command, CommandEmpty, CommandGroup, CommandInput, CommandItem, CommandList } from "@/components/ui/command";
 import { EDataTable, EDataTableColumn } from "@/components/common/EDataTable";
 import { cn } from "@/lib/utils";
 import { apiClient } from "@/lib/api/client";
@@ -44,6 +46,43 @@ import { useTableSettings } from "@/hooks/useTableSettings";
 import { TableSettingsModal } from "@/components/common/TableSettingsModal";
 import { toast } from "sonner";
 
+// 검색 가능한 카테고리 콤보박스
+function CategoryCombobox({ options, value, onChange, placeholder }: {
+  options: { code: string; label: string }[];
+  value: string;
+  onChange: (v: string) => void;
+  placeholder: string;
+}) {
+  const [open, setOpen] = useState(false);
+  const selected = options.find((o) => o.code === value);
+  return (
+    <Popover open={open} onOpenChange={setOpen}>
+      <PopoverTrigger asChild>
+        <Button variant="outline" role="combobox" aria-expanded={open} className="h-9 w-full justify-between font-normal">
+          <span className="truncate">{selected?.label || <span className="text-muted-foreground">{placeholder}</span>}</span>
+          <ChevronsUpDown className="ml-2 h-3.5 w-3.5 shrink-0 opacity-50" />
+        </Button>
+      </PopoverTrigger>
+      <PopoverContent className="p-0" style={{ width: "var(--radix-popover-trigger-width)" }} align="start">
+        <Command>
+          <CommandInput placeholder="검색..." className="h-8" />
+          <CommandList>
+            <CommandEmpty>검색 결과가 없어요</CommandEmpty>
+            <CommandGroup className="max-h-[200px] overflow-auto">
+              {options.map((opt) => (
+                <CommandItem key={opt.code} value={opt.label} onSelect={() => { onChange(opt.code); setOpen(false); }}>
+                  <Check className={cn("mr-2 h-3.5 w-3.5", value === opt.code ? "opacity-100" : "opacity-0")} />
+                  {opt.label}
+                </CommandItem>
+              ))}
+            </CommandGroup>
+          </CommandList>
+        </Command>
+      </PopoverContent>
+    </Popover>
+  );
+}
+
 const TABLE_NAME = "item_info";
 
 const GRID_COLUMNS = [
@@ -55,8 +94,8 @@ const GRID_COLUMNS = [
   { key: "unit", label: "단위" },
   { key: "material", label: "재질" },
   { key: "status", label: "상태" },
-  { key: "selling_price", label: "판매가격", align: "right" as const },
-  { key: "standard_price", label: "기준단가", align: "right" as const },
+  { key: "selling_price", label: "판매가격", align: "right" as const, formatNumber: true },
+  { key: "standard_price", label: "기준단가", align: "right" as const, formatNumber: true },
   { key: "weight", label: "중량", align: "right" as const },
   { key: "inventory_unit", label: "재고단위" },
   { key: "user_type01", label: "대분류" },
@@ -163,6 +202,14 @@ export default function ItemInfoPage() {
       const raw = res.data?.data?.data || res.data?.data?.rows || [];
       const resolve = (col: string, code: string) => {
         if (!code) return "";
+        // 쉼표 구분 다중값 지원
+        if (code.includes(",")) {
+          return code.split(",").map((c) => {
+            const trimmed = c.trim();
+            if (!trimmed || trimmed === "s") return "";
+            return categoryOptions[col]?.find((o) => o.code === trimmed)?.label || trimmed;
+          }).filter(Boolean).join(", ");
+        }
         return categoryOptions[col]?.find((o) => o.code === code)?.label || code;
       };
       const data = raw.map((r: any) => {
@@ -361,6 +408,7 @@ export default function ItemInfoPage() {
           key: col.key,
           label: col.label,
           align: col.align as "left" | "center" | "right" | undefined,
+          formatNumber: (col as any).formatNumber,
         }))}
         data={ts.groupData(items)}
         loading={loading}
@@ -394,21 +442,12 @@ export default function ItemInfoPage() {
                     {field.required && <span className="text-destructive ml-1">*</span>}
                   </Label>
                   {field.type === "category" ? (
-                    <Select
+                    <CategoryCombobox
+                      options={categoryOptions[field.key] || []}
                       value={formData[field.key] || ""}
-                      onValueChange={(v) => setFormData((prev) => ({ ...prev, [field.key]: v }))}
-                    >
-                      <SelectTrigger className="h-9 w-full">
-                        <SelectValue placeholder={`${field.label} 선택`} />
-                      </SelectTrigger>
-                      <SelectContent>
-                        {(categoryOptions[field.key] || []).map((opt) => (
-                          <SelectItem key={opt.code} value={opt.code}>
-                            {opt.label}
-                          </SelectItem>
-                        ))}
-                      </SelectContent>
-                    </Select>
+                      onChange={(v) => setFormData((prev) => ({ ...prev, [field.key]: v }))}
+                      placeholder={`${field.label} 선택`}
+                    />
                   ) : field.type === "textarea" ? (
                     <Textarea
                       value={formData[field.key] || ""}
@@ -416,6 +455,16 @@ export default function ItemInfoPage() {
                       placeholder={field.label}
                       rows={3}
                     />
+                  ) : ["selling_price", "standard_price"].includes(field.key) ? (
+                    <Input
+                      value={formData[field.key] ? Number(String(formData[field.key]).replace(/,/g, "")).toLocaleString() : ""}
+                      onChange={(e) => {
+                        const raw = e.target.value.replace(/[^\d.-]/g, "");
+                        setFormData((prev) => ({ ...prev, [field.key]: raw }));
+                      }}
+                      placeholder={field.placeholder || field.label}
+                      className="h-9 text-right"
+                    />
                   ) : (
                     <Input
                       value={formData[field.key] || ""}