(최겸) 구매 입찰 내 견적 첨부파일, PR 견적가 조회 기능 추가

11 files changed, 747 insertions, 697 deletions

diff --git a/lib/bidding/pre-quote/service.ts b/lib/bidding/pre-quote/service.ts
index c34f6f9e..7f0a9083 100644
--- a/lib/bidding/pre-quote/service.ts
+++ b/lib/bidding/pre-quote/service.ts
@@ -5,6 +5,8 @@ import { biddingCompanies, companyConditionResponses, biddings, prItemsForBiddin
 import { vendors } from '@/db/schema/vendors'
 import { sendEmail } from '@/lib/mail/sendEmail'
 import { eq, inArray, and } from 'drizzle-orm'
+import { saveFile } from '@/lib/file-stroage'
+import { downloadFile } from '@/lib/file-download'
 
 interface CreateBiddingCompanyInput {
   biddingId: number
@@ -524,17 +526,17 @@ export async function submitPreQuoteResponse(
           majorApplicableRawMaterial: responseData.priceAdjustmentForm.majorApplicableRawMaterial,
           adjustmentFormula: responseData.priceAdjustmentForm.adjustmentFormula,
           rawMaterialPriceIndex: responseData.priceAdjustmentForm.rawMaterialPriceIndex,
-          referenceDate: responseData.priceAdjustmentForm.referenceDate ? new Date(responseData.priceAdjustmentForm.referenceDate) : null,
-          comparisonDate: responseData.priceAdjustmentForm.comparisonDate ? new Date(responseData.priceAdjustmentForm.comparisonDate) : null,
-          adjustmentRatio: responseData.priceAdjustmentForm.adjustmentRatio,
+          referenceDate: responseData.priceAdjustmentForm.referenceDate as string || null,
+          comparisonDate: responseData.priceAdjustmentForm.comparisonDate as string || null,
+          adjustmentRatio: responseData.priceAdjustmentForm.adjustmentRatio || null,
           notes: responseData.priceAdjustmentForm.notes,
           adjustmentConditions: responseData.priceAdjustmentForm.adjustmentConditions,
           majorNonApplicableRawMaterial: responseData.priceAdjustmentForm.majorNonApplicableRawMaterial,
           adjustmentPeriod: responseData.priceAdjustmentForm.adjustmentPeriod,
           contractorWriter: responseData.priceAdjustmentForm.contractorWriter,
-          adjustmentDate: responseData.priceAdjustmentForm.adjustmentDate ? new Date(responseData.priceAdjustmentForm.adjustmentDate) : null,
+          adjustmentDate: responseData.priceAdjustmentForm.adjustmentDate as string || null,
           nonApplicableReason: responseData.priceAdjustmentForm.nonApplicableReason,
-        }
+        } as any
 
         // 기존 연동제 정보가 있는지 확인
         const existingPriceAdjustment = await tx
@@ -785,17 +787,17 @@ export async function savePreQuoteDraft(
           majorApplicableRawMaterial: responseData.priceAdjustmentForm.majorApplicableRawMaterial,
           adjustmentFormula: responseData.priceAdjustmentForm.adjustmentFormula,
           rawMaterialPriceIndex: responseData.priceAdjustmentForm.rawMaterialPriceIndex,
-          referenceDate: responseData.priceAdjustmentForm.referenceDate ? new Date(responseData.priceAdjustmentForm.referenceDate) : null,
-          comparisonDate: responseData.priceAdjustmentForm.comparisonDate ? new Date(responseData.priceAdjustmentForm.comparisonDate) : null,
-          adjustmentRatio: responseData.priceAdjustmentForm.adjustmentRatio,
+          referenceDate: responseData.priceAdjustmentForm.referenceDate as string || null,
+          comparisonDate: responseData.priceAdjustmentForm.comparisonDate as string || null,
+          adjustmentRatio: responseData.priceAdjustmentForm.adjustmentRatio || null,
           notes: responseData.priceAdjustmentForm.notes,
           adjustmentConditions: responseData.priceAdjustmentForm.adjustmentConditions,
           majorNonApplicableRawMaterial: responseData.priceAdjustmentForm.majorNonApplicableRawMaterial,
           adjustmentPeriod: responseData.priceAdjustmentForm.adjustmentPeriod,
           contractorWriter: responseData.priceAdjustmentForm.contractorWriter,
-          adjustmentDate: responseData.priceAdjustmentForm.adjustmentDate ? new Date(responseData.priceAdjustmentForm.adjustmentDate) : null,
+          adjustmentDate: responseData.priceAdjustmentForm.adjustmentDate as string || null,
           nonApplicableReason: responseData.priceAdjustmentForm.nonApplicableReason,
-        }
+        } as any
 
         // 기존 연동제 정보가 있는지 확인
         const existingPriceAdjustment = await tx
@@ -835,21 +837,37 @@ export async function savePreQuoteDraft(
 export async function uploadPreQuoteDocument(
   biddingId: number,
   companyId: number,
-  documentInfo: PreQuoteDocumentUpload,
+  file: File,
   userId: string
 ) {
   try {
+    // 파일 저장
+    const saveResult = await saveFile({
+      file,
+      directory: `bidding/${biddingId}/quotations`,
+      originalName: file.name,
+      userId
+    })
+
+    if (!saveResult.success) {
+      return {
+        success: false,
+        error: saveResult.error || '파일 저장에 실패했습니다.'
+      }
+    }
+
+    // 데이터베이스에 문서 정보 저장
     const result = await db.insert(biddingDocuments)
       .values({
         biddingId,
         companyId,
         documentType: 'other', // 견적서 타입
-        fileName: documentInfo.fileName,
-        originalFileName: documentInfo.originalFileName,
-        fileSize: documentInfo.fileSize,
-        mimeType: documentInfo.mimeType,
-        filePath: documentInfo.filePath,
-        title: `견적서 - ${documentInfo.originalFileName}`,
+        fileName: saveResult.fileName!,
+        originalFileName: file.name,
+        fileSize: file.size,
+        mimeType: file.type,
+        filePath: saveResult.publicPath!, // publicPath 사용 (웹 접근 가능한 경로)
+        title: `견적서 - ${file.name}`,
         description: '협력업체 제출 견적서',
         isPublic: false,
         isRequired: false,
@@ -884,7 +902,8 @@ export async function getPreQuoteDocuments(biddingId: number, companyId: number)
         filePath: biddingDocuments.filePath,
         title: biddingDocuments.title,
         description: biddingDocuments.description,
-        uploadedAt: biddingDocuments.uploadedAt
+        uploadedAt: biddingDocuments.uploadedAt,
+        uploadedBy: biddingDocuments.uploadedBy
       })
       .from(biddingDocuments)
       .where(
@@ -934,4 +953,112 @@ export async function getSavedPrItemQuotations(biddingCompanyId: number) {
     console.error('Failed to get saved PR item quotations:', error)
     return []
     }
+  }
+
+// 견적 문서 정보 조회 (다운로드용)
+export async function getPreQuoteDocumentForDownload(
+  documentId: number,
+  biddingId: number,
+  companyId: number
+) {
+  try {
+    const document = await db
+      .select({
+        fileName: biddingDocuments.fileName,
+        originalFileName: biddingDocuments.originalFileName,
+        filePath: biddingDocuments.filePath
+      })
+      .from(biddingDocuments)
+      .where(
+        and(
+          eq(biddingDocuments.id, documentId),
+          eq(biddingDocuments.biddingId, biddingId),
+          eq(biddingDocuments.companyId, companyId),
+          eq(biddingDocuments.documentType, 'other')
+        )
+      )
+      .limit(1)
+
+    if (document.length === 0) {
+      return {
+        success: false,
+        error: '문서를 찾을 수 없습니다.'
+      }
+    }
+
+    return {
+      success: true,
+      document: document[0]
+    }
+  } catch (error) {
+    console.error('Failed to get pre-quote document:', error)
+    return {
+      success: false,
+      error: '문서 정보 조회에 실패했습니다.'
+    }
+  }
+}
+
+// 견적 문서 삭제
+export async function deletePreQuoteDocument(
+  documentId: number,
+  biddingId: number,
+  companyId: number,
+  userId: string
+) {
+  try {
+    // 문서 존재 여부 및 권한 확인
+    const document = await db
+      .select({
+        id: biddingDocuments.id,
+        fileName: biddingDocuments.fileName,
+        filePath: biddingDocuments.filePath,
+        uploadedBy: biddingDocuments.uploadedBy
+      })
+      .from(biddingDocuments)
+      .where(
+        and(
+          eq(biddingDocuments.id, documentId),
+          eq(biddingDocuments.biddingId, biddingId),
+          eq(biddingDocuments.companyId, companyId),
+          eq(biddingDocuments.documentType, 'other')
+        )
+      )
+      .limit(1)
+
+    if (document.length === 0) {
+      return {
+        success: false,
+        error: '문서를 찾을 수 없습니다.'
+      }
+    }
+
+    const doc = document[0]
+
+    // 권한 확인 (업로드한 사용자만 삭제 가능)
+    if (doc.uploadedBy !== userId) {
+      return {
+        success: false,
+        error: '삭제 권한이 없습니다.'
+      }
+    }
+
+    // 데이터베이스에서 문서 정보 삭제
+    await db
+      .delete(biddingDocuments)
+      .where(eq(biddingDocuments.id, documentId))
+
+    // TODO: 실제 파일도 삭제하는 로직 추가 (필요시)
+
+    return {
+      success: true,
+      message: '문서가 성공적으로 삭제되었습니다.'
+    }
+  } catch (error) {
+    console.error('Failed to delete pre-quote document:', error)
+    return {
+      success: false,
+      error: '문서 삭제에 실패했습니다.'
+    }
+    }
   }
\ No newline at end of file
diff --git a/lib/bidding/pre-quote/table/bidding-pre-quote-attachments-dialog.tsx b/lib/bidding/pre-quote/table/bidding-pre-quote-attachments-dialog.tsx
new file mode 100644
index 00000000..cfa629e3
--- /dev/null
+++ b/lib/bidding/pre-quote/table/bidding-pre-quote-attachments-dialog.tsx
@@ -0,0 +1,224 @@
+'use client'
+
+import * as React from 'react'
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog'
+import { Button } from '@/components/ui/button'
+import { Badge } from '@/components/ui/badge'
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from '@/components/ui/table'
+import {
+  FileText,
+  Download,
+  User,
+  Calendar
+} from 'lucide-react'
+import { useToast } from '@/hooks/use-toast'
+import { useTransition } from 'react'
+import { getPreQuoteDocuments, getPreQuoteDocumentForDownload } from '../service'
+import { downloadFile } from '@/lib/file-download'
+
+interface UploadedDocument {
+  id: number
+  fileName: string
+  originalFileName: string
+  fileSize: number | null
+  filePath: string
+  title: string | null
+  description: string | null
+  uploadedAt: string
+  uploadedBy: string
+}
+
+interface BiddingPreQuoteAttachmentsDialogProps {
+  open: boolean
+  onOpenChange: (open: boolean) => void
+  biddingId: number
+  companyId: number
+  companyName: string
+}
+
+export function BiddingPreQuoteAttachmentsDialog({
+  open,
+  onOpenChange,
+  biddingId,
+  companyId,
+  companyName
+}: BiddingPreQuoteAttachmentsDialogProps) {
+  const { toast } = useToast()
+  const [isPending, startTransition] = useTransition()
+  const [documents, setDocuments] = React.useState<UploadedDocument[]>([])
+  const [isLoading, setIsLoading] = React.useState(false)
+
+  // 다이얼로그가 열릴 때 첨부파일 목록 로드
+  React.useEffect(() => {
+    if (open) {
+      loadDocuments()
+    }
+  }, [open, biddingId, companyId])
+
+  const loadDocuments = async () => {
+    setIsLoading(true)
+    try {
+      const docs = await getPreQuoteDocuments(biddingId, companyId)
+      // Date를 string으로 변환
+      const mappedDocs = docs.map(doc => ({
+        ...doc,
+        uploadedAt: doc.uploadedAt.toString(),
+        uploadedBy: doc.uploadedBy || ''
+      }))
+      setDocuments(mappedDocs)
+    } catch (error) {
+      console.error('Failed to load documents:', error)
+      toast({
+        title: '오류',
+        description: '첨부파일 목록을 불러오는데 실패했습니다.',
+        variant: 'destructive',
+      })
+    } finally {
+      setIsLoading(false)
+    }
+  }
+
+  // 파일 다운로드
+  const handleDownload = (document: UploadedDocument) => {
+    startTransition(async () => {
+      const result = await getPreQuoteDocumentForDownload(document.id, biddingId, companyId)
+      
+      if (result.success) {
+        try {
+          await downloadFile(result.document?.filePath, result.document?.originalFileName, {
+            showToast: true
+          })
+        } catch (error) {
+          toast({
+            title: '다운로드 실패',
+            description: '파일 다운로드에 실패했습니다.',
+            variant: 'destructive',
+          })
+        }
+      } else {
+        toast({
+          title: '다운로드 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+  }
+
+  // 파일 크기 포맷팅
+  const formatFileSize = (bytes: number | null) => {
+    if (!bytes) return '-'
+    if (bytes === 0) return '0 Bytes'
+    const k = 1024
+    const sizes = ['Bytes', 'KB', 'MB', 'GB']
+    const i = Math.floor(Math.log(bytes) / Math.log(k))
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="max-w-4xl max-h-[80vh] overflow-y-auto">
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2">
+            <FileText className="w-5 h-5" />
+            <span>협력업체 첨부파일</span>
+            <span className="text-sm font-normal text-muted-foreground">
+              - {companyName}
+            </span>
+          </DialogTitle>
+          <DialogDescription>
+            협력업체가 제출한 견적 관련 첨부파일 목록입니다.
+          </DialogDescription>
+        </DialogHeader>
+
+        {isLoading ? (
+          <div className="flex items-center justify-center py-12">
+            <div className="text-center">
+              <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-primary mx-auto mb-4"></div>
+              <p className="text-muted-foreground">첨부파일 목록을 불러오는 중...</p>
+            </div>
+          </div>
+        ) : documents.length > 0 ? (
+          <div className="space-y-4">
+            <div className="flex items-center justify-between">
+              <Badge variant="secondary" className="text-sm">
+                총 {documents.length}개 파일
+              </Badge>
+            </div>
+            
+            <Table>
+              <TableHeader>
+                <TableRow>
+                  <TableHead>파일명</TableHead>
+                  <TableHead>크기</TableHead>
+                  <TableHead>업로드일</TableHead>
+                  <TableHead>작성자</TableHead>
+                  <TableHead className="w-24">작업</TableHead>
+                </TableRow>
+              </TableHeader>
+              <TableBody>
+                {documents.map((doc) => (
+                  <TableRow key={doc.id}>
+                    <TableCell>
+                      <div className="flex items-center gap-2">
+                        <FileText className="w-4 h-4 text-gray-500" />
+                        <span className="truncate max-w-48" title={doc.originalFileName}>
+                          {doc.originalFileName}
+                        </span>
+                      </div>
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      {formatFileSize(doc.fileSize)}
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      <div className="flex items-center gap-1">
+                        <Calendar className="w-3 h-3" />
+                        {new Date(doc.uploadedAt).toLocaleDateString('ko-KR')}
+                      </div>
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      <div className="flex items-center gap-1">
+                        <User className="w-3 h-3" />
+                        {doc.uploadedBy}
+                      </div>
+                    </TableCell>
+                    <TableCell>
+                      <Button
+                        variant="outline"
+                        size="sm"
+                        onClick={() => handleDownload(doc)}
+                        disabled={isPending}
+                        title="다운로드"
+                      >
+                        <Download className="w-3 h-3" />
+                      </Button>
+                    </TableCell>
+                  </TableRow>
+                ))}
+              </TableBody>
+            </Table>
+          </div>
+        ) : (
+          <div className="text-center py-12 text-gray-500">
+            <FileText className="w-12 h-12 mx-auto mb-4 opacity-50" />
+            <p className="text-lg font-medium mb-2">첨부파일이 없습니다</p>
+            <p className="text-sm">협력업체가 아직 첨부파일을 업로드하지 않았습니다.</p>
+          </div>
+        )}
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx
index 39fcb30f..f28f9e1f 100644
--- a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx
+++ b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-columns.tsx
@@ -6,7 +6,7 @@ import { Checkbox } from "@/components/ui/checkbox"
 import { Badge } from "@/components/ui/badge"
 import { Button } from "@/components/ui/button"
 import {
-  MoreHorizontal, Edit, Trash2, UserPlus
+  MoreHorizontal, Edit, Trash2, UserPlus, Paperclip
 } from "lucide-react"
 import {
   DropdownMenu,
@@ -59,6 +59,7 @@ interface GetBiddingCompanyColumnsProps {
   onInvite: (company: BiddingCompany) => void
   onViewPriceAdjustment?: (company: BiddingCompany) => void
   onViewItemDetails?: (company: BiddingCompany) => void
+  onViewAttachments?: (company: BiddingCompany) => void
 }
 
 export function getBiddingPreQuoteVendorColumns({
@@ -66,7 +67,8 @@ export function getBiddingPreQuoteVendorColumns({
   onDelete,
   onInvite,
   onViewPriceAdjustment,
-  onViewItemDetails
+  onViewItemDetails,
+  onViewAttachments
 }: GetBiddingCompanyColumnsProps): ColumnDef<BiddingCompany>[] {
   return [
     {
@@ -148,6 +150,30 @@ export function getBiddingPreQuoteVendorColumns({
       ),
     },
     {
+      accessorKey: 'attachments',
+      header: '첨부파일',
+      cell: ({ row }) => {
+        const hasAttachments = row.original.preQuoteSubmittedAt // 제출된 경우에만 첨부파일이 있을 수 있음
+        return (
+          <div className="text-center">
+            {hasAttachments ? (
+              <Button
+                variant="ghost"
+                size="sm"
+                onClick={() => onViewAttachments?.(row.original)}
+                className="h-8 w-8 p-0"
+                title="첨부파일 보기"
+              >
+                <Paperclip className="h-4 w-4" />
+              </Button>
+            ) : (
+              <span className="text-muted-foreground text-sm">-</span>
+            )}
+          </div>
+        )
+      },
+    },
+    {
       accessorKey: 'isPreQuoteSelected',
       header: '본입찰 선정',
       cell: ({ row }) => (
diff --git a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-table.tsx b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-table.tsx
index 346bf9a6..a1319821 100644
--- a/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-table.tsx
+++ b/lib/bidding/pre-quote/table/bidding-pre-quote-vendor-table.tsx
@@ -17,6 +17,7 @@ import { useToast } from '@/hooks/use-toast'
 import { useTransition } from 'react'
 import { PriceAdjustmentDialog } from '@/components/bidding/price-adjustment-dialog'
 import { BiddingPreQuoteItemDetailsDialog } from './bidding-pre-quote-item-details-dialog'
+import { BiddingPreQuoteAttachmentsDialog } from './bidding-pre-quote-attachments-dialog'
 import { getPrItemsForBidding } from '../service'
 
 interface BiddingPreQuoteVendorTableContentProps {
@@ -106,6 +107,8 @@ export function BiddingPreQuoteVendorTableContent({
   const [isItemDetailsDialogOpen, setIsItemDetailsDialogOpen] = React.useState(false)
   const [selectedCompanyForDetails, setSelectedCompanyForDetails] = React.useState<BiddingCompany | null>(null)
   const [prItems, setPrItems] = React.useState<any[]>([])
+  const [isAttachmentsDialogOpen, setIsAttachmentsDialogOpen] = React.useState(false)
+  const [selectedCompanyForAttachments, setSelectedCompanyForAttachments] = React.useState<BiddingCompany | null>(null)
 
   const handleDelete = (company: BiddingCompany) => {
     if (!confirm(`${company.companyName} 업체를 삭제하시겠습니까?`)) return
@@ -178,15 +181,21 @@ export function BiddingPreQuoteVendorTableContent({
     })
   }
 
+  const handleViewAttachments = (company: BiddingCompany) => {
+    setSelectedCompanyForAttachments(company)
+    setIsAttachmentsDialogOpen(true)
+  }
+
   const columns = React.useMemo(
     () => getBiddingPreQuoteVendorColumns({
       onEdit: onEdit || handleEdit,
       onDelete: onDelete || handleDelete,
       onInvite: handleInvite,
       onViewPriceAdjustment: handleViewPriceAdjustment,
-      onViewItemDetails: handleViewItemDetails
+      onViewItemDetails: handleViewItemDetails,
+      onViewAttachments: handleViewAttachments
     }),
-    [onEdit, onDelete, handleEdit, handleDelete, handleInvite, handleViewPriceAdjustment, handleViewItemDetails]
+    [onEdit, onDelete, handleEdit, handleDelete, handleInvite, handleViewPriceAdjustment, handleViewItemDetails, handleViewAttachments]
   )
 
   const { table } = useDataTable({
@@ -248,6 +257,14 @@ export function BiddingPreQuoteVendorTableContent({
         prItems={prItems}
         currency={bidding.currency || 'KRW'}
       />
+
+      <BiddingPreQuoteAttachmentsDialog
+        open={isAttachmentsDialogOpen}
+        onOpenChange={setIsAttachmentsDialogOpen}
+        biddingId={biddingId}
+        companyId={selectedCompanyForAttachments?.companyId || 0}
+        companyName={selectedCompanyForAttachments?.companyName || ''}
+      />
     </>
   )
 }
diff --git a/lib/bidding/vendor/components/pre-quote-file-upload.tsx b/lib/bidding/vendor/components/pre-quote-file-upload.tsx
deleted file mode 100644
index b6d8990b..00000000
--- a/lib/bidding/vendor/components/pre-quote-file-upload.tsx
+++ /dev/null
@@ -1,367 +0,0 @@
-'use client'
-
-import * as React from 'react'
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { Button } from '@/components/ui/button'
-import { Input } from '@/components/ui/input'
-import { Label } from '@/components/ui/label'
-import { Badge } from '@/components/ui/badge'
-import { Progress } from '@/components/ui/progress'
-import {
-  Table,
-  TableBody,
-  TableCell,
-  TableHead,
-  TableHeader,
-  TableRow,
-} from '@/components/ui/table'
-import {
-  Upload,
-  FileText,
-  Download,
-  Trash2,
-  AlertCircle
-} from 'lucide-react'
-import { useToast } from '@/hooks/use-toast'
-import { saveFile } from '@/lib/file-stroage'
-import { downloadFile } from '@/lib/file-download'
-import { 
-  uploadPreQuoteDocument, 
-  getPreQuoteDocuments 
-} from '../../pre-quote/service'
-
-interface UploadedDocument {
-  id: number
-  fileName: string
-  originalFileName: string
-  fileSize: number | null
-  filePath: string
-  title: string | null
-  description: string | null
-  uploadedAt: string
-}
-
-interface PreQuoteFileUploadProps {
-  biddingId: number
-  companyId: number
-  onUploadComplete?: (documentId: number) => void
-  readOnly?: boolean
-}
-
-export function PreQuoteFileUpload({
-  biddingId,
-  companyId,
-  onUploadComplete,
-  readOnly = false
-}: PreQuoteFileUploadProps) {
-  const { toast } = useToast()
-  const [documents, setDocuments] = React.useState<UploadedDocument[]>([])
-  const [isUploading, setIsUploading] = React.useState(false)
-  const [uploadProgress, setUploadProgress] = React.useState(0)
-  const [dragActive, setDragActive] = React.useState(false)
-
-  // 업로드된 문서 목록 로드
-  const loadDocuments = React.useCallback(async () => {
-    try {
-      const docs = await getPreQuoteDocuments(biddingId, companyId)
-      // Date를 string으로 변환
-      const mappedDocs = docs.map(doc => ({
-        ...doc,
-        uploadedAt: doc.uploadedAt.toString()
-      }))
-      setDocuments(mappedDocs)
-    } catch (error) {
-      console.error('Failed to load documents:', error)
-      toast({
-        title: '오류',
-        description: '업로드된 문서 목록을 불러오는데 실패했습니다.',
-        variant: 'destructive',
-      })
-    }
-  }, [biddingId, companyId, toast])
-
-  React.useEffect(() => {
-    loadDocuments()
-  }, [loadDocuments])
-
-  // 파일 업로드 처리
-  const handleFileUpload = async (files: FileList | File[]) => {
-    if (readOnly) return
-    
-    const fileArray = Array.from(files)
-    if (fileArray.length === 0) return
-
-    setIsUploading(true)
-    setUploadProgress(0)
-
-    try {
-      for (let i = 0; i < fileArray.length; i++) {
-        const file = fileArray[i]
-        
-        // 파일 크기 체크 (50MB 제한)
-        if (file.size > 50 * 1024 * 1024) {
-          toast({
-            title: '파일 크기 초과',
-            description: `${file.name}의 크기가 50MB를 초과합니다.`,
-            variant: 'destructive',
-          })
-          continue
-        }
-
-        // 파일 타입 체크
-        const allowedTypes = [
-          'application/pdf',
-          'application/msword',
-          'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
-          'application/vnd.ms-excel',
-          'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
-          'image/jpeg',
-          'image/png',
-          'application/zip'
-        ]
-        
-        if (!allowedTypes.includes(file.type)) {
-          toast({
-            title: '지원하지 않는 파일 형식',
-            description: `${file.name}: PDF, Word, Excel, 이미지, ZIP 파일만 업로드 가능합니다.`,
-            variant: 'destructive',
-          })
-          continue
-        }
-
-        // 파일 저장
-        const saveResult = await saveFile({
-          file,
-          directory: `bidding/${biddingId}/quotations`,
-          originalName: file.name,
-          userId: 'current-user' // TODO: 실제 사용자 ID
-        })
-
-        if (!saveResult.success) {
-          toast({
-            title: '업로드 실패',
-            description: `${file.name}: ${saveResult.error}`,
-            variant: 'destructive',
-          })
-          continue
-        }
-
-        // 데이터베이스에 문서 정보 저장
-        const uploadResult = await uploadPreQuoteDocument(
-          biddingId,
-          companyId,
-          {
-            fileName: saveResult.fileName!,
-            originalFileName: file.name,
-            fileSize: file.size,
-            mimeType: file.type,
-            filePath: saveResult.path!
-          },
-          'current-user' // TODO: 실제 사용자 ID
-        )
-
-        if (uploadResult.success) {
-          toast({
-            title: '업로드 완료',
-            description: `${file.name}이 성공적으로 업로드되었습니다.`,
-          })
-          
-          if (onUploadComplete && uploadResult.documentId) {
-            onUploadComplete(uploadResult.documentId)
-          }
-        } else {
-          toast({
-            title: '업로드 실패',
-            description: uploadResult.error,
-            variant: 'destructive',
-          })
-        }
-
-        // 진행률 업데이트
-        setUploadProgress(((i + 1) / fileArray.length) * 100)
-      }
-
-      // 문서 목록 새로고침
-      await loadDocuments()
-
-    } catch (error) {
-      console.error('Upload error:', error)
-      toast({
-        title: '업로드 오류',
-        description: '파일 업로드 중 오류가 발생했습니다.',
-        variant: 'destructive',
-      })
-    } finally {
-      setIsUploading(false)
-      setUploadProgress(0)
-    }
-  }
-
-  // 드래그 앤 드롭 처리
-  const handleDrag = (e: React.DragEvent) => {
-    e.preventDefault()
-    e.stopPropagation()
-    if (e.type === 'dragenter' || e.type === 'dragover') {
-      setDragActive(true)
-    } else if (e.type === 'dragleave') {
-      setDragActive(false)
-    }
-  }
-
-  const handleDrop = (e: React.DragEvent) => {
-    e.preventDefault()
-    e.stopPropagation()
-    setDragActive(false)
-    
-    if (readOnly) return
-
-    if (e.dataTransfer.files && e.dataTransfer.files[0]) {
-      handleFileUpload(e.dataTransfer.files)
-    }
-  }
-
-  // 파일 다운로드
-  const handleDownload = async (document: UploadedDocument) => {
-    try {
-      await downloadFile(document.filePath, document.originalFileName, {
-        showToast: true
-      })
-    } catch (error) {
-      console.error('Failed to download document:', error)
-      toast({
-        title: '다운로드 실패',
-        description: '파일 다운로드에 실패했습니다.',
-        variant: 'destructive',
-      })
-    }
-  }
-
-  // 파일 크기 포맷팅
-  const formatFileSize = (bytes: number | null) => {
-    if (!bytes) return '-'
-    if (bytes === 0) return '0 Bytes'
-    const k = 1024
-    const sizes = ['Bytes', 'KB', 'MB', 'GB']
-    const i = Math.floor(Math.log(bytes) / Math.log(k))
-    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
-  }
-
-  return (
-    <Card>
-      <CardHeader>
-        <CardTitle className="flex items-center gap-2">
-          <FileText className="w-5 h-5" />
-          견적 문서 업로드
-        </CardTitle>
-      </CardHeader>
-      <CardContent className="space-y-4">
-        {!readOnly && (
-          <div
-            className={`border-2 border-dashed rounded-lg p-6 text-center transition-colors ${
-              dragActive 
-                ? 'border-primary bg-primary/5' 
-                : 'border-gray-300 hover:border-gray-400'
-            }`}
-            onDragEnter={handleDrag}
-            onDragLeave={handleDrag}
-            onDragOver={handleDrag}
-            onDrop={handleDrop}
-          >
-            <Upload className="w-8 h-8 mx-auto text-gray-400 mb-2" />
-            <div className="space-y-2">
-              <p className="text-sm text-gray-600">
-                파일을 드래그하여 업로드하거나 클릭하여 선택하세요
-              </p>
-              <Input
-                type="file"
-                multiple
-                accept=".pdf,.doc,.docx,.xls,.xlsx,.jpg,.jpeg,.png,.zip"
-                onChange={(e) => e.target.files && handleFileUpload(e.target.files)}
-                className="hidden"
-                id="file-upload"
-              />
-              <Label htmlFor="file-upload">
-                <Button variant="outline" className="cursor-pointer" asChild>
-                  <span>파일 선택</span>
-                </Button>
-              </Label>
-            </div>
-            <p className="text-xs text-gray-500 mt-2">
-              지원 형식: PDF, Word, Excel, 이미지, ZIP (최대 50MB)
-            </p>
-          </div>
-        )}
-
-        {isUploading && (
-          <div className="space-y-2">
-            <div className="flex items-center gap-2">
-              <Upload className="w-4 h-4 animate-pulse" />
-              <span className="text-sm">업로드 중...</span>
-            </div>
-            <Progress value={uploadProgress} className="h-2" />
-          </div>
-        )}
-
-        {/* 업로드된 문서 목록 */}
-        {documents.length > 0 ? (
-          <div className="space-y-2">
-            <Label className="text-sm font-medium">업로드된 문서</Label>
-            <Table>
-              <TableHeader>
-                <TableRow>
-                  <TableHead>파일명</TableHead>
-                  <TableHead>크기</TableHead>
-                  <TableHead>업로드일</TableHead>
-                  <TableHead className="w-24">작업</TableHead>
-                </TableRow>
-              </TableHeader>
-              <TableBody>
-                {documents.map((doc) => (
-                  <TableRow key={doc.id}>
-                    <TableCell>
-                      <div className="flex items-center gap-2">
-                        <FileText className="w-4 h-4 text-gray-500" />
-                        <span className="truncate max-w-48" title={doc.originalFileName}>
-                          {doc.originalFileName}
-                        </span>
-                      </div>
-                    </TableCell>
-                    <TableCell className="text-sm text-gray-500">
-                      {formatFileSize(doc.fileSize)}
-                    </TableCell>
-                    <TableCell className="text-sm text-gray-500">
-                      {new Date(doc.uploadedAt).toLocaleDateString('ko-KR')}
-                    </TableCell>
-                    <TableCell>
-                      <Button
-                        variant="outline"
-                        size="sm"
-                        onClick={() => handleDownload(doc)}
-                      >
-                        <Download className="w-3 h-3" />
-                      </Button>
-                    </TableCell>
-                  </TableRow>
-                ))}
-              </TableBody>
-            </Table>
-          </div>
-        ) : (
-          <div className="text-center py-4 text-gray-500">
-            <FileText className="w-8 h-8 mx-auto mb-2 opacity-50" />
-            <p className="text-sm">업로드된 문서가 없습니다</p>
-          </div>
-        )}
-
-        {readOnly && documents.length === 0 && (
-          <div className="flex items-center gap-2 p-3 bg-yellow-50 border border-yellow-200 rounded-md">
-            <AlertCircle className="w-4 h-4 text-yellow-600" />
-            <span className="text-sm text-yellow-800">
-              견적 문서가 업로드되지 않았습니다.
-            </span>
-          </div>
-        )}
-      </CardContent>
-    </Card>
-  )
-}
diff --git a/lib/bidding/vendor/components/simple-file-upload.tsx b/lib/bidding/vendor/components/simple-file-upload.tsx
new file mode 100644
index 00000000..b1eb8b8f
--- /dev/null
+++ b/lib/bidding/vendor/components/simple-file-upload.tsx
@@ -0,0 +1,315 @@
+'use client'
+
+import * as React from 'react'
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
+import { Button } from '@/components/ui/button'
+import { Input } from '@/components/ui/input'
+import { Label } from '@/components/ui/label'
+import { Badge } from '@/components/ui/badge'
+import {
+  Table,
+  TableBody,
+  TableCell,
+  TableHead,
+  TableHeader,
+  TableRow,
+} from '@/components/ui/table'
+import {
+  Upload,
+  FileText,
+  Download,
+  Trash2
+} from 'lucide-react'
+import { useToast } from '@/hooks/use-toast'
+import { useTransition } from 'react'
+import { 
+  uploadPreQuoteDocument, 
+  getPreQuoteDocuments,
+  getPreQuoteDocumentForDownload,
+  deletePreQuoteDocument
+} from '../../pre-quote/service'
+import { downloadFile } from '@/lib/file-download'
+
+interface UploadedDocument {
+  id: number
+  fileName: string
+  originalFileName: string
+  fileSize: number | null
+  filePath: string
+  title: string | null
+  description: string | null
+  uploadedAt: string
+  uploadedBy: string
+}
+
+interface SimpleFileUploadProps {
+  biddingId: number
+  companyId: number
+  userId: string
+  readOnly?: boolean
+}
+
+export function SimpleFileUpload({
+  biddingId,
+  companyId,
+  userId,
+  readOnly = false
+}: SimpleFileUploadProps) {
+  const { toast } = useToast()
+  const [isPending, startTransition] = useTransition()
+  const [documents, setDocuments] = React.useState<UploadedDocument[]>([])
+  const [isLoading, setIsLoading] = React.useState(true)
+
+  // 업로드된 문서 목록 로드
+  const loadDocuments = React.useCallback(async () => {
+    try {
+      setIsLoading(true)
+      const docs = await getPreQuoteDocuments(biddingId, companyId)
+      // Date를 string으로 변환
+      const mappedDocs = docs.map(doc => ({
+        ...doc,
+        uploadedAt: doc.uploadedAt.toString(),
+        uploadedBy: doc.uploadedBy || ''
+      }))
+      setDocuments(mappedDocs)
+    } catch (error) {
+      console.error('Failed to load documents:', error)
+      toast({
+        title: '오류',
+        description: '업로드된 문서 목록을 불러오는데 실패했습니다.',
+        variant: 'destructive',
+      })
+    } finally {
+      setIsLoading(false)
+    }
+  }, [biddingId, companyId, toast])
+
+  React.useEffect(() => {
+    loadDocuments()
+  }, [loadDocuments])
+
+  // 파일 업로드 처리
+  const handleFileUpload = (event: React.ChangeEvent<HTMLInputElement>) => {
+    const files = event.target.files
+    if (!files || files.length === 0) return
+
+    const file = files[0]
+    
+    // 파일 크기 체크 (50MB 제한)
+    if (file.size > 50 * 1024 * 1024) {
+      toast({
+        title: '파일 크기 초과',
+        description: '파일 크기가 50MB를 초과합니다.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    // 파일 타입 체크
+    const allowedTypes = [
+      'application/pdf',
+      'application/msword',
+      'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
+      'application/vnd.ms-excel',
+      'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+      'image/jpeg',
+      'image/png',
+      'application/zip'
+    ]
+    
+    if (!allowedTypes.includes(file.type)) {
+      toast({
+        title: '지원하지 않는 파일 형식',
+        description: 'PDF, Word, Excel, 이미지, ZIP 파일만 업로드 가능합니다.',
+        variant: 'destructive',
+      })
+      return
+    }
+
+    startTransition(async () => {
+      const result = await uploadPreQuoteDocument(biddingId, companyId, file, userId)
+      
+      if (result.success) {
+        toast({
+          title: '업로드 완료',
+          description: result.message,
+        })
+        await loadDocuments() // 문서 목록 새로고침
+      } else {
+        toast({
+          title: '업로드 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+
+    // input 초기화
+    event.target.value = ''
+  }
+
+  // 파일 다운로드
+  const handleDownload = (document: UploadedDocument) => {
+    startTransition(async () => {
+      const result = await getPreQuoteDocumentForDownload(document.id, biddingId, companyId)
+      
+      if (result.success) {
+        try {
+          await downloadFile(result.document?.filePath, result.document?.originalFileName, {
+            showToast: true
+          })
+        } catch (error) {
+          toast({
+            title: '다운로드 실패',
+            description: '파일 다운로드에 실패했습니다.',
+            variant: 'destructive',
+          })
+        }
+      } else {
+        toast({
+          title: '다운로드 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+  }
+
+  // 파일 삭제
+  const handleDelete = (document: UploadedDocument) => {
+    if (!confirm(`"${document.originalFileName}" 파일을 삭제하시겠습니까?`)) {
+      return
+    }
+
+    startTransition(async () => {
+      const result = await deletePreQuoteDocument(document.id, biddingId, companyId, userId)
+      
+      if (result.success) {
+        toast({
+          title: '삭제 완료',
+          description: result.message,
+        })
+        await loadDocuments() // 문서 목록 새로고침
+      } else {
+        toast({
+          title: '삭제 실패',
+          description: result.error,
+          variant: 'destructive',
+        })
+      }
+    })
+  }
+
+  // 파일 크기 포맷팅
+  const formatFileSize = (bytes: number | null) => {
+    if (!bytes) return '-'
+    if (bytes === 0) return '0 Bytes'
+    const k = 1024
+    const sizes = ['Bytes', 'KB', 'MB', 'GB']
+    const i = Math.floor(Math.log(bytes) / Math.log(k))
+    return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i]
+  }
+
+  return (
+    <Card>
+      <CardHeader>
+        <CardTitle className="flex items-center gap-2">
+          <FileText className="w-5 h-5" />
+          견적 문서 업로드
+        </CardTitle>
+      </CardHeader>
+      <CardContent className="space-y-4">
+        {!readOnly && (
+          <div className="space-y-2">
+            <Label htmlFor="file-upload">견적서 파일</Label>
+            <Input
+              id="file-upload"
+              type="file"
+              accept=".pdf,.doc,.docx,.xls,.xlsx,.jpg,.jpeg,.png,.zip"
+              onChange={handleFileUpload}
+              disabled={isPending}
+            />
+            <p className="text-xs text-muted-foreground">
+              지원 형식: PDF, Word, Excel, 이미지, ZIP (최대 50MB)
+            </p>
+          </div>
+        )}
+
+        {/* 업로드된 문서 목록 */}
+        {isLoading ? (
+          <div className="text-center py-4">
+            <p className="text-muted-foreground">문서 목록을 불러오는 중...</p>
+          </div>
+        ) : documents.length > 0 ? (
+          <div className="space-y-2">
+            <Label className="text-sm font-medium">업로드된 문서</Label>
+            <Table>
+              <TableHeader>
+                <TableRow>
+                  <TableHead>파일명</TableHead>
+                  <TableHead>크기</TableHead>
+                  <TableHead>업로드일</TableHead>
+                  <TableHead>작성자</TableHead>
+                  <TableHead className="w-24">작업</TableHead>
+                </TableRow>
+              </TableHeader>
+              <TableBody>
+                {documents.map((doc) => (
+                  <TableRow key={doc.id}>
+                    <TableCell>
+                      <div className="flex items-center gap-2">
+                        <FileText className="w-4 h-4 text-gray-500" />
+                        <span className="truncate max-w-48" title={doc.originalFileName}>
+                          {doc.originalFileName}
+                        </span>
+                      </div>
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      {formatFileSize(doc.fileSize)}
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      {new Date(doc.uploadedAt).toLocaleDateString('ko-KR')}
+                    </TableCell>
+                    <TableCell className="text-sm text-gray-500">
+                      {doc.uploadedBy}
+                    </TableCell>
+                    <TableCell>
+                      <div className="flex items-center gap-1">
+                        <Button
+                          variant="outline"
+                          size="sm"
+                          onClick={() => handleDownload(doc)}
+                          disabled={isPending}
+                          title="다운로드"
+                        >
+                          <Download className="w-3 h-3" />
+                        </Button>
+                        {!readOnly && doc.uploadedBy === userId && (
+                          <Button
+                            variant="outline"
+                            size="sm"
+                            onClick={() => handleDelete(doc)}
+                            disabled={isPending}
+                            title="삭제"
+                            className="text-red-600 hover:text-red-700"
+                          >
+                            <Trash2 className="w-3 h-3" />
+                          </Button>
+                        )}
+                      </div>
+                    </TableCell>
+                  </TableRow>
+                ))}
+              </TableBody>
+            </Table>
+          </div>
+        ) : (
+          <div className="text-center py-4 text-gray-500">
+            <FileText className="w-8 h-8 mx-auto mb-2 opacity-50" />
+            <p className="text-sm">업로드된 문서가 없습니다</p>
+          </div>
+        )}
+      </CardContent>
+    </Card>
+  )
+}
diff --git a/lib/bidding/vendor/partners-bidding-list-columns.tsx b/lib/bidding/vendor/partners-bidding-list-columns.tsx
index 04575550..0d1e3123 100644
--- a/lib/bidding/vendor/partners-bidding-list-columns.tsx
+++ b/lib/bidding/vendor/partners-bidding-list-columns.tsx
@@ -127,7 +127,7 @@ export function getPartnersBiddingListColumns({ setRowAction }: PartnersBiddingL
                                    row.original.invitationStatus === 'accepted'
         
         // 사전견적이 가능한 조건: 초대 발송(sent) 상태인 경우
-        const canDoPreQuote = row.original.invitationStatus === 'sent'
+        const canDoPreQuote = row.original.invitationStatus === 'sent' || row.original.invitationStatus === 'pending' || row.original.invitationStatus === 'submitted';
 
         return (
           <DropdownMenu>
diff --git a/lib/bidding/vendor/partners-bidding-list.tsx b/lib/bidding/vendor/partners-bidding-list.tsx
index a13334ef..9f182911 100644
--- a/lib/bidding/vendor/partners-bidding-list.tsx
+++ b/lib/bidding/vendor/partners-bidding-list.tsx
@@ -16,7 +16,6 @@ import { getBiddingListForPartners, PartnersBiddingListItem } from '../detail/se
 import { PartnersBiddingToolbarActions } from './partners-bidding-toolbar-actions'
 import { PartnersBiddingAttendanceDialog } from './partners-bidding-attendance-dialog'
 import { PartnersBiddingParticipationDialog } from './partners-bidding-participation-dialog'
-import { VendorPreQuoteParticipationDialog } from './vendor-prequote-participation-dialog'
 import { setPreQuoteParticipation, getBiddingCompaniesForPartners } from '../pre-quote/service'
 
 interface PartnersBiddingListProps {
@@ -30,7 +29,6 @@ export function PartnersBiddingList({ companyId }: PartnersBiddingListProps) {
   const [rowAction, setRowAction] = React.useState<{ type: string; row: { original: PartnersBiddingListItem } } | null>(null)
   const [isParticipationDialogOpen, setIsParticipationDialogOpen] = React.useState(false)
   const [selectedBiddingForParticipation, setSelectedBiddingForParticipation] = React.useState<PartnersBiddingListItem | null>(null)
-  const [isPreQuoteParticipationDialogOpen, setIsPreQuoteParticipationDialogOpen] = React.useState(false)
   const [selectedBiddingForPreQuoteParticipation, setSelectedBiddingForPreQuoteParticipation] = React.useState<any | null>(null)
 
   const router = useRouter()
@@ -48,20 +46,7 @@ export function PartnersBiddingList({ companyId }: PartnersBiddingListProps) {
     }
   }, [companyId])
 
-  // 사전견적 참여의사 결정을 위한 상세 데이터 로드
-  const loadBiddingDetailForParticipation = React.useCallback(async (bidding: PartnersBiddingListItem) => {
-    try {
-      const biddingDetail = await getBiddingCompaniesForPartners(bidding.biddingId, companyId)
-      if (biddingDetail) {
-        setSelectedBiddingForPreQuoteParticipation(biddingDetail)
-        setIsPreQuoteParticipationDialogOpen(true)
-      }
-    } catch (error) {
-      console.error('Failed to load bidding detail for participation:', error)
-    }
-  }, [companyId])
-
-  // 사전견적 참여의사 결정 핸들러
+  // 입찰 참여의사 결정 핸들러
   const handlePreQuoteParticipationDecision = React.useCallback(async (participate: boolean) => {
     if (!selectedBiddingForPreQuoteParticipation?.biddingCompanyId) {
       throw new Error('업체 정보를 찾을 수 없습니다.')
@@ -112,15 +97,15 @@ export function PartnersBiddingList({ companyId }: PartnersBiddingListProps) {
           router.push(`/partners/bid/${rowAction.row.original.biddingId}/pre-quote`)
           break
         case 'participation':
-          // 사전견적 참여 의사 결정 다이얼로그 열기 - 상세 데이터 로드 필요
-          loadBiddingDetailForParticipation(rowAction.row.original)
+          // 입찰 참여 의사 결정 다이얼로그 열기 - 상세 데이터 로드 필요
+          handlePreQuoteParticipationDecision(true)
           setRowAction(null) // rowAction 초기화
           break
         default:
           break
       }
     }
-  }, [rowAction, router, loadBiddingDetailForParticipation])
+  }, [rowAction, router, handlePreQuoteParticipationDecision])
 
   const columns = React.useMemo(
     () => getPartnersBiddingListColumns({ setRowAction }),
@@ -234,7 +219,7 @@ export function PartnersBiddingList({ companyId }: PartnersBiddingListProps) {
         isAttending={rowAction?.row.original?.isAttendingMeeting || null}
         onSuccess={refreshData}
       />
-
+{/* 
       <PartnersBiddingParticipationDialog
         open={isParticipationDialogOpen}
         onOpenChange={setIsParticipationDialogOpen}
@@ -244,19 +229,8 @@ export function PartnersBiddingList({ companyId }: PartnersBiddingListProps) {
           refreshData()
           setSelectedBiddingForParticipation(null)
         }}
-      />
+      /> */}
 
-      <VendorPreQuoteParticipationDialog
-        open={isPreQuoteParticipationDialogOpen}
-        onOpenChange={(open) => {
-          setIsPreQuoteParticipationDialogOpen(open)
-          if (!open) {
-            setSelectedBiddingForPreQuoteParticipation(null)
-          }
-        }}
-        biddingDetail={selectedBiddingForPreQuoteParticipation}
-        onParticipationDecision={handlePreQuoteParticipationDecision}
-      />
     </>
   )
 }
diff --git a/lib/bidding/vendor/partners-bidding-pre-quote.tsx b/lib/bidding/vendor/partners-bidding-pre-quote.tsx
index 7b29b1a6..94b76f58 100644
--- a/lib/bidding/vendor/partners-bidding-pre-quote.tsx
+++ b/lib/bidding/vendor/partners-bidding-pre-quote.tsx
@@ -35,7 +35,7 @@ import {
 import { getBiddingConditions } from '../service'
 import { getPriceAdjustmentFormByBiddingCompanyId } from '../detail/service'
 import { PrItemsPricingTable } from './components/pr-items-pricing-table'
-import { PreQuoteFileUpload } from './components/pre-quote-file-upload'
+import { SimpleFileUpload } from './components/simple-file-upload'
 import {
   biddingStatusLabels,
   contractTypeLabels,
@@ -43,6 +43,7 @@ import {
 } from '@/db/schema'
 import { useToast } from '@/hooks/use-toast'
 import { useTransition } from 'react'
+import { useSession } from 'next-auth/react'
 
 interface PartnersBiddingPreQuoteProps {
   biddingId: number
@@ -98,6 +99,7 @@ export function PartnersBiddingPreQuote({ biddingId, companyId }: PartnersBiddin
   const router = useRouter()
   const { toast } = useToast()
   const [isPending, startTransition] = useTransition()
+  const session = useSession()
   const [biddingDetail, setBiddingDetail] = React.useState<BiddingDetail | null>(null)
   const [isLoading, setIsLoading] = React.useState(true)
   const [biddingConditions, setBiddingConditions] = React.useState<any | null>(null)
@@ -142,6 +144,7 @@ export function PartnersBiddingPreQuote({ biddingId, companyId }: PartnersBiddin
     adjustmentDate: '',
     nonApplicableReason: '',
   })
+  const userId = session.data?.user?.id || ''
 
   // 데이터 로드
   React.useEffect(() => {
@@ -627,11 +630,12 @@ export function PartnersBiddingPreQuote({ biddingId, companyId }: PartnersBiddin
       )}
 
       {/* 견적 문서 업로드 섹션 */}
-      {/* <PreQuoteFileUpload
+      <SimpleFileUpload
         biddingId={biddingId}
         companyId={companyId}
-        readOnly={biddingDetail?.invitationStatus === 'submitted'}
-      /> */}
+        userId={userId}
+        readOnly={false}
+      />
 
       {/* 사전견적 폼 섹션 */}
       <Card>
diff --git a/lib/bidding/vendor/partners-bidding-toolbar-actions.tsx b/lib/bidding/vendor/partners-bidding-toolbar-actions.tsx
index 324e21d1..c2fb6487 100644
--- a/lib/bidding/vendor/partners-bidding-toolbar-actions.tsx
+++ b/lib/bidding/vendor/partners-bidding-toolbar-actions.tsx
@@ -32,9 +32,7 @@ export function PartnersBiddingToolbarActions({
   )
 
   // 참여 의사 결정 버튼 활성화 조건 (sent 상태이고 아직 참여의사를 결정하지 않은 경우)
-  const canDecideParticipation = selectedBidding && 
-    selectedBidding.invitationStatus === 'sent' &&
-    selectedBidding.isPreQuoteSelected === null
+  const canDecideParticipation = selectedBidding
 
   const handleAttendanceClick = () => {
     if (selectedBidding && setRowAction) {
diff --git a/lib/bidding/vendor/vendor-prequote-participation-dialog.tsx b/lib/bidding/vendor/vendor-prequote-participation-dialog.tsx
deleted file mode 100644
index c8098c3d..00000000
--- a/lib/bidding/vendor/vendor-prequote-participation-dialog.tsx
+++ /dev/null
@@ -1,268 +0,0 @@
-'use client'
-
-import * as React from 'react'
-import { Button } from '@/components/ui/button'
-import {
-  Dialog,
-  DialogContent,
-  DialogDescription,
-  DialogFooter,
-  DialogHeader,
-  DialogTitle,
-} from '@/components/ui/dialog'
-import { Badge } from '@/components/ui/badge'
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card'
-import { CheckCircle, XCircle, AlertCircle, Calendar, Package, Building2, User } from 'lucide-react'
-import { useToast } from '@/hooks/use-toast'
-import { useTransition } from 'react'
-import { formatDate } from '@/lib/utils'
-
-interface VendorPreQuoteParticipationDialogProps {
-  open: boolean
-  onOpenChange: (open: boolean) => void
-  biddingDetail: any // BiddingDetail 타입
-  onParticipationDecision: (participate: boolean) => Promise<void>
-}
-
-export function VendorPreQuoteParticipationDialog({
-  open,
-  onOpenChange,
-  biddingDetail,
-  onParticipationDecision
-}: VendorPreQuoteParticipationDialogProps) {
-  const { toast } = useToast()
-  const [isPending, startTransition] = useTransition()
-  const [selectedDecision, setSelectedDecision] = React.useState<boolean | null>(null)
-
-  const handleSubmit = () => {
-    if (selectedDecision === null) {
-      toast({
-        title: '선택 필요',
-        description: '사전견적 참여 여부를 선택해주세요.',
-        variant: 'destructive',
-      })
-      return
-    }
-
-    startTransition(async () => {
-      try {
-        await onParticipationDecision(selectedDecision)
-        
-        toast({
-          title: '완료',
-          description: selectedDecision 
-            ? '사전견적 참여를 결정했습니다. 이제 견적서를 작성하실 수 있습니다.' 
-            : '사전견적 참여를 거절했습니다.',
-        })
-        
-        setSelectedDecision(null)
-        onOpenChange(false)
-      } catch (error) {
-        toast({
-          title: '오류',
-          description: '처리 중 오류가 발생했습니다.',
-          variant: 'destructive',
-        })
-      }
-    })
-  }
-
-  const handleOpenChange = (open: boolean) => {
-    onOpenChange(open)
-    if (!open) {
-      setSelectedDecision(null)
-    }
-  }
-
-  if (!biddingDetail) return null
-
-  return (
-    <Dialog open={open} onOpenChange={handleOpenChange}>
-      <DialogContent className="sm:max-w-[700px]">
-        <DialogHeader>
-          <DialogTitle className="flex items-center gap-2">
-            <AlertCircle className="w-5 h-5 text-blue-600" />
-            사전견적 참여 의사 결정
-          </DialogTitle>
-          <DialogDescription>
-            다음 입찰건에 대한 사전견적 참여 여부를 결정해주세요.
-          </DialogDescription>
-        </DialogHeader>
-        
-        <div className="py-4 space-y-6">
-          {/* 입찰 정보 카드 */}
-          <Card>
-            <CardHeader>
-              <CardTitle className="text-lg flex items-center gap-2">
-                <Package className="w-5 h-5" />
-                입찰 상세 정보
-              </CardTitle>
-            </CardHeader>
-            <CardContent>
-              <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
-                <div>
-                  <strong className="text-gray-700">입찰번호:</strong>
-                  <div className="flex items-center gap-2 mt-1">
-                    <span className="font-mono">{biddingDetail.biddingNumber}</span>
-                    {biddingDetail.revision && biddingDetail.revision > 0 && (
-                      <Badge variant="outline">Rev.{biddingDetail.revision}</Badge>
-                    )}
-                  </div>
-                </div>
-                
-                <div>
-                  <strong className="text-gray-700">프로젝트:</strong>
-                  <div className="flex items-center gap-2 mt-1">
-                    <Building2 className="w-4 h-4" />
-                    <span>{biddingDetail.projectName}</span>
-                  </div>
-                </div>
-
-                <div className="md:col-span-2">
-                  <strong className="text-gray-700">입찰명:</strong>
-                  <div className="mt-1">
-                    <span className="text-lg">{biddingDetail.title}</span>
-                  </div>
-                </div>
-
-                <div>
-                  <strong className="text-gray-700">품목명:</strong>
-                  <div className="mt-1">{biddingDetail.itemName}</div>
-                </div>
-
-                <div>
-                  <strong className="text-gray-700">담당자:</strong>
-                  <div className="flex items-center gap-2 mt-1">
-                    <User className="w-4 h-4" />
-                    <span>{biddingDetail.managerName}</span>
-                  </div>
-                </div>
-
-                {biddingDetail.preQuoteDate && (
-                  <div className="md:col-span-2">
-                    <strong className="text-gray-700">사전견적 마감일:</strong>
-                    <div className="flex items-center gap-2 mt-1">
-                      <Calendar className="w-4 h-4 text-red-500" />
-                      <span className="text-red-600 font-semibold">
-                        {formatDate(biddingDetail.preQuoteDate, 'KR')}
-                      </span>
-                    </div>
-                  </div>
-                )}
-
-                {biddingDetail.budget && (
-                  <div>
-                    <strong className="text-gray-700">예산:</strong>
-                    <div className="mt-1 font-mono">
-                      {biddingDetail.budget?.toLocaleString()} {biddingDetail.currency || 'KRW'}
-                    </div>
-                  </div>
-                )}
-              </div>
-            </CardContent>
-          </Card>
-
-          {/* 참여 의사 선택 */}
-          <div className="space-y-4">
-            <h3 className="text-lg font-semibold text-gray-900">
-              사전견적에 참여하시겠습니까?
-            </h3>
-            
-            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
-              {/* 참여 */}
-              <Card 
-                className={`cursor-pointer transition-all border-2 ${
-                  selectedDecision === true 
-                    ? 'border-green-500 bg-green-50 shadow-md' 
-                    : 'border-gray-200 hover:border-green-300 hover:shadow-sm'
-                }`}
-                onClick={() => setSelectedDecision(true)}
-              >
-                <CardContent className="p-6 text-center">
-                  <CheckCircle className="w-16 h-16 text-green-600 mx-auto mb-4" />
-                  <h4 className="text-xl font-semibold text-green-700 mb-2">
-                    참여하겠습니다
-                  </h4>
-                  <p className="text-sm text-gray-600 leading-relaxed">
-                    사전견적서를 작성하여 제출하겠습니다.<br/>
-                    마감일까지 견적을 완료해주세요.
-                  </p>
-                </CardContent>
-              </Card>
-
-              {/* 참여 안함 */}
-              <Card 
-                className={`cursor-pointer transition-all border-2 ${
-                  selectedDecision === false 
-                    ? 'border-red-500 bg-red-50 shadow-md' 
-                    : 'border-gray-200 hover:border-red-300 hover:shadow-sm'
-                }`}
-                onClick={() => setSelectedDecision(false)}
-              >
-                <CardContent className="p-6 text-center">
-                  <XCircle className="w-16 h-16 text-red-600 mx-auto mb-4" />
-                  <h4 className="text-xl font-semibold text-red-700 mb-2">
-                    참여하지 않겠습니다
-                  </h4>
-                  <p className="text-sm text-gray-600 leading-relaxed">
-                    이번 사전견적에는 참여하지 않겠습니다.<br/>
-                    다음 기회에 참여하겠습니다.
-                  </p>
-                </CardContent>
-              </Card>
-            </div>
-
-            {selectedDecision !== null && (
-              <div className={`mt-4 p-4 rounded-lg border ${
-                selectedDecision 
-                  ? 'bg-green-50 border-green-200' 
-                  : 'bg-red-50 border-red-200'
-              }`}>
-                <div className="flex items-center gap-2">
-                  {selectedDecision ? (
-                    <CheckCircle className="w-5 h-5 text-green-600" />
-                  ) : (
-                    <XCircle className="w-5 h-5 text-red-600" />
-                  )}
-                  <span className={`font-medium ${
-                    selectedDecision ? 'text-green-800' : 'text-red-800'
-                  }`}>
-                    {selectedDecision 
-                      ? '사전견적 참여를 선택하셨습니다.'
-                      : '사전견적 참여를 거절하셨습니다.'
-                    }
-                  </span>
-                </div>
-                <p className={`text-sm mt-1 ${
-                  selectedDecision ? 'text-green-600' : 'text-red-600'
-                }`}>
-                  {selectedDecision 
-                    ? '확인을 누르시면 견적서 작성 화면으로 이동합니다.'
-                    : '확인을 누르시면 이 입찰건의 참여가 종료됩니다.'
-                  }
-                </p>
-              </div>
-            )}
-          </div>
-        </div>
-
-        <DialogFooter>
-          <Button variant="outline" onClick={() => handleOpenChange(false)}>
-            취소
-          </Button>
-          <Button 
-            onClick={handleSubmit} 
-            disabled={isPending || selectedDecision === null}
-            className={selectedDecision === true ? 'bg-green-600 hover:bg-green-700' : 
-                      selectedDecision === false ? 'bg-red-600 hover:bg-red-700' : ''}
-          >
-            {selectedDecision === true && <CheckCircle className="w-4 h-4 mr-2" />}
-            {selectedDecision === false && <XCircle className="w-4 h-4 mr-2" />}
-            {selectedDecision === true ? '참여 확정' : 
-             selectedDecision === false ? '참여 거절' : '선택하세요'}
-          </Button>
-        </DialogFooter>
-      </DialogContent>
-    </Dialog>
-  )
-}