diff --git a/negodata/front/src/api/generated/model/index.ts b/negodata/front/src/api/generated/model/index.ts
index 987f649..6501c93 100644
--- a/negodata/front/src/api/generated/model/index.ts
+++ b/negodata/front/src/api/generated/model/index.ts
@@ -5,7 +5,6 @@
  * OpenAPI spec version: 0.1.0
  */
 
-export * from './asyncJob';
 export * from './bodyUploadItemImageV1ItemImagePost';
 export * from './cardData';
 export * from './cardDataCondition';
@@ -126,6 +125,7 @@ export * from './reqCreateSupplierManagerEmail';
 export * from './reqCreateSupplierManagerName';
 export * from './reqCreateSupplierPriority';
 export * from './reqLogin';
+export * from './reqRegenerateQuotation';
 export * from './reqUpdateCard';
 export * from './reqUpdateCardCondition';
 export * from './reqUpdateCardEditScript';
@@ -173,9 +173,8 @@ export * from './resCheckCodesMsg';
 export * from './resCreateAccount';
 export * from './resCreateAccountMsg';
 export * from './resCreateQuotation';
-export * from './resCreateQuotationAsyncJob';
 export * from './resCreateQuotationMsg';
-export * from './resCreateQuotationQuotation';
+export * from './resCreateQuotationQtId';
 export * from './resDeleteCard';
 export * from './resDeleteCardMsg';
 export * from './resDeleteItem';
diff --git a/negodata/front/src/api/generated/model/reqCreateQuotation.ts b/negodata/front/src/api/generated/model/reqCreateQuotation.ts
index bac460b..60dab99 100644
--- a/negodata/front/src/api/generated/model/reqCreateQuotation.ts
+++ b/negodata/front/src/api/generated/model/reqCreateQuotation.ts
@@ -15,7 +15,6 @@ export interface ReqCreateQuotation {
   qt_setting_id: string;
   version_id?: ReqCreateQuotationVersionId;
   name?: string;
-  number?: string;
   type?: number;
   status?: number;
   start_time?: ReqCreateQuotationStartTime;
diff --git a/negodata/front/src/api/generated/model/asyncJob.ts b/negodata/front/src/api/generated/model/reqRegenerateQuotation.ts
similarity index 64%
rename from negodata/front/src/api/generated/model/asyncJob.ts
rename to negodata/front/src/api/generated/model/reqRegenerateQuotation.ts
index b073009..0b07eaa 100644
--- a/negodata/front/src/api/generated/model/asyncJob.ts
+++ b/negodata/front/src/api/generated/model/reqRegenerateQuotation.ts
@@ -5,7 +5,6 @@
  * OpenAPI spec version: 0.1.0
  */
 
-export interface AsyncJob {
-  status?: string;
-  message?: string;
+export interface ReqRegenerateQuotation {
+  supplier_ids?: string[];
 }
diff --git a/negodata/front/src/api/generated/model/resCreateQuotation.ts b/negodata/front/src/api/generated/model/resCreateQuotation.ts
index 76ba712..0c65650 100644
--- a/negodata/front/src/api/generated/model/resCreateQuotation.ts
+++ b/negodata/front/src/api/generated/model/resCreateQuotation.ts
@@ -6,14 +6,11 @@
  */
 import type { ErrorInfo } from './errorInfo';
 import type { ResCreateQuotationMsg } from './resCreateQuotationMsg';
-import type { ResCreateQuotationQuotation } from './resCreateQuotationQuotation';
-import type { SessionData } from './sessionData';
-import type { ResCreateQuotationAsyncJob } from './resCreateQuotationAsyncJob';
+import type { ResCreateQuotationQtId } from './resCreateQuotationQtId';
 
 export interface ResCreateQuotation {
   result?: ErrorInfo;
   msg?: ResCreateQuotationMsg;
-  quotation?: ResCreateQuotationQuotation;
-  sessions?: SessionData[];
-  async_job?: ResCreateQuotationAsyncJob;
+  qt_id?: ResCreateQuotationQtId;
+  session_count?: number;
 }
diff --git a/negodata/front/src/api/generated/model/resCreateQuotationAsyncJob.ts b/negodata/front/src/api/generated/model/resCreateQuotationQtId.ts
similarity index 54%
rename from negodata/front/src/api/generated/model/resCreateQuotationAsyncJob.ts
rename to negodata/front/src/api/generated/model/resCreateQuotationQtId.ts
index bc335b0..3e174d8 100644
--- a/negodata/front/src/api/generated/model/resCreateQuotationAsyncJob.ts
+++ b/negodata/front/src/api/generated/model/resCreateQuotationQtId.ts
@@ -4,6 +4,5 @@
  * Negodata Api Server
  * OpenAPI spec version: 0.1.0
  */
-import type { AsyncJob } from './asyncJob';
 
-export type ResCreateQuotationAsyncJob = AsyncJob | null;
+export type ResCreateQuotationQtId = string | null;
diff --git a/negodata/front/src/api/generated/model/resCreateQuotationQuotation.ts b/negodata/front/src/api/generated/model/resCreateQuotationQuotation.ts
deleted file mode 100644
index ce4e28f..0000000
--- a/negodata/front/src/api/generated/model/resCreateQuotationQuotation.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-/**
- * Generated by orval v7.21.0 🍺
- * Do not edit manually.
- * Negodata Api Server
- * OpenAPI spec version: 0.1.0
- */
-import type { QuotationData } from './quotationData';
-
-export type ResCreateQuotationQuotation = QuotationData | null;
diff --git a/negodata/front/src/api/generated/quotation/quotation.ts b/negodata/front/src/api/generated/quotation/quotation.ts
index bdfb53b..c20a974 100644
--- a/negodata/front/src/api/generated/quotation/quotation.ts
+++ b/negodata/front/src/api/generated/quotation/quotation.ts
@@ -27,6 +27,7 @@ import type {
   HTTPValidationError,
   ListQuotationsParams,
   ReqCreateQuotation,
+  ReqRegenerateQuotation,
   ResCreateQuotation,
   ResDeleteQuotation,
   ResQuotation,
@@ -265,6 +266,71 @@ export const useStopQuotation = <TError = void | HTTPValidationError,
       return useMutation(mutationOptions, queryClient);
     }
     /**
+ * @summary 견적 재생성(다음 라운드)
+ */
+export const regenerateQuotation = (
+    qtId: string,
+    reqRegenerateQuotation: ReqRegenerateQuotation,
+ options?: SecondParameter<typeof customFetch>,signal?: AbortSignal
+) => {
+      
+      
+      return customFetch<ResCreateQuotation>(
+      {url: `/v1/quotation/regenerate/${qtId}`, method: 'POST',
+      headers: {'Content-Type': 'application/json', },
+      data: reqRegenerateQuotation, signal
+    },
+      options);
+    }
+  
+
+
+export const getRegenerateQuotationMutationOptions = <TError = void | HTTPValidationError,
+    TContext = unknown>(options?: { mutation?:UseMutationOptions<Awaited<ReturnType<typeof regenerateQuotation>>, TError,{qtId: string;data: ReqRegenerateQuotation}, TContext>, request?: SecondParameter<typeof customFetch>}
+): UseMutationOptions<Awaited<ReturnType<typeof regenerateQuotation>>, TError,{qtId: string;data: ReqRegenerateQuotation}, TContext> => {
+
+const mutationKey = ['regenerateQuotation'];
+const {mutation: mutationOptions, request: requestOptions} = options ?
+      options.mutation && 'mutationKey' in options.mutation && options.mutation.mutationKey ?
+      options
+      : {...options, mutation: {...options.mutation, mutationKey}}
+      : {mutation: { mutationKey, }, request: undefined};
+
+      
+
+
+      const mutationFn: MutationFunction<Awaited<ReturnType<typeof regenerateQuotation>>, {qtId: string;data: ReqRegenerateQuotation}> = (props) => {
+          const {qtId,data} = props ?? {};
+
+          return  regenerateQuotation(qtId,data,requestOptions)
+        }
+
+        
+
+
+  return  { mutationFn, ...mutationOptions }}
+
+    export type RegenerateQuotationMutationResult = NonNullable<Awaited<ReturnType<typeof regenerateQuotation>>>
+    export type RegenerateQuotationMutationBody = ReqRegenerateQuotation
+    export type RegenerateQuotationMutationError = void | HTTPValidationError
+
+    /**
+ * @summary 견적 재생성(다음 라운드)
+ */
+export const useRegenerateQuotation = <TError = void | HTTPValidationError,
+    TContext = unknown>(options?: { mutation?:UseMutationOptions<Awaited<ReturnType<typeof regenerateQuotation>>, TError,{qtId: string;data: ReqRegenerateQuotation}, TContext>, request?: SecondParameter<typeof customFetch>}
+ , queryClient?: QueryClient): UseMutationResult<
+        Awaited<ReturnType<typeof regenerateQuotation>>,
+        TError,
+        {qtId: string;data: ReqRegenerateQuotation},
+        TContext
+      > => {
+
+      const mutationOptions = getRegenerateQuotationMutationOptions(options);
+
+      return useMutation(mutationOptions, queryClient);
+    }
+    /**
  * @summary 견적 상태 조회
  */
 export const getQuotationStatus = (
diff --git a/negodata/front/src/components/ui/sheet.tsx b/negodata/front/src/components/ui/sheet.tsx
index db09d3c..5cb05a0 100644
--- a/negodata/front/src/components/ui/sheet.tsx
+++ b/negodata/front/src/components/ui/sheet.tsx
@@ -20,8 +20,8 @@ export function Sheet({ open, title, onClose, children }: SheetProps) {
       {/* 백드롭 */}
       <div className="flex-1 cursor-pointer" onClick={onClose} />
 
-      {/* 우측 드로어 패널 */}
-      <div className="w-full max-w-lg bg-card border-l border-border h-full flex flex-col justify-between shadow-2xl p-6 overflow-y-auto animate-slide-left">
+      {/* 우측 드로어 패널 (패널 자체가 세로 스크롤 — justify-* 는 스크롤 시작점을 가려 안 씀) */}
+      <div className="w-full max-w-lg bg-card border-l border-border h-full shadow-2xl p-6 overflow-y-auto animate-slide-left">
         <div>
           {/* 헤더 */}
           <div className="flex items-center justify-between pb-4 border-b border-border">
diff --git a/negodata/front/src/features/quotations/components/QuotationCreateModal.tsx b/negodata/front/src/features/quotations/components/QuotationCreateModal.tsx
index 4cc3db0..aacfa10 100644
--- a/negodata/front/src/features/quotations/components/QuotationCreateModal.tsx
+++ b/negodata/front/src/features/quotations/components/QuotationCreateModal.tsx
@@ -9,6 +9,13 @@ import type { CreateQuotationInput } from '../hooks/useQuotations';
 import { QuotationType } from '@/api/generated/model';
 import { QUOTATION_TYPE_OPTIONS } from '../types';
 
+// datetime-local 디폴트값: 현재 한국시간(Asia/Seoul)의 'YYYY-MM-DDTHH:mm'.
+// sv-SE 로케일이 'YYYY-MM-DD HH:mm:ss' 를 주고, timeZone 명시로 브라우저 TZ 와 무관하게 KST 로 고정한다.
+function nowKstLocalInput(): string {
+  const s = new Date().toLocaleString('sv-SE', { timeZone: 'Asia/Seoul' });
+  return s.slice(0, 16).replace(' ', 'T');
+}
+
 type QuotationCreateModalProps = {
   open: boolean;
   products: Product[];
@@ -33,9 +40,10 @@ export function QuotationCreateModal({
   const [type, setType] = useState<number>(QuotationType.REQUOTE);
   const [productId, setProductId] = useState('');
   const [selectedPartnerIds, setSelectedPartnerIds] = useState<string[]>([]);
-  const [dueDate, setDueDate] = useState('2026-06-15T18:00');
+  const [dueDate, setDueDate] = useState(nowKstLocalInput);
   const [settingId, setSettingId] = useState(quotationSettings[0]?.qt_setting_id ?? '');
   const [selectedCardIds, setSelectedCardIds] = useState<string[]>([]);
+  const [memo, setMemo] = useState('');
   const [submitting, setSubmitting] = useState(false);
   const typeOptions = QUOTATION_TYPE_OPTIONS;
 
@@ -65,6 +73,7 @@ export function QuotationCreateModal({
         dueDate,
         settingId,
         cardIds: selectedCardIds,
+        memo,
       });
       if (ok) onClose();
     } finally {
@@ -277,6 +286,19 @@ export function QuotationCreateModal({
                   })}
                 </div>
               </div>
+
+              <div className="space-y-1">
+                <Typography as="label" variant="label">메모 (선택)</Typography>
+                <textarea
+                  id="wizard-memo"
+                  value={memo}
+                  onChange={(e) => setMemo(e.target.value)}
+                  rows={2}
+                  maxLength={100}
+                  className="w-full p-2 bg-background border border-border rounded text-xs resize-none"
+                  placeholder="견적 관련 메모 (선택, 최대 100자)"
+                />
+              </div>
             </div>
           )}
 
diff --git a/negodata/front/src/features/quotations/components/QuotationDetailSheet/ChatTab.tsx b/negodata/front/src/features/quotations/components/QuotationDetailSheet/ChatTab.tsx
index 7e359f3..e5fff6f 100644
--- a/negodata/front/src/features/quotations/components/QuotationDetailSheet/ChatTab.tsx
+++ b/negodata/front/src/features/quotations/components/QuotationDetailSheet/ChatTab.tsx
@@ -37,7 +37,7 @@ export function ChatTab({
         <div className="p-3 border-b border-border bg-muted/40 font-mono text-[10px] text-muted-foreground uppercase">
           참여자 협력사 리스트
         </div>
-        <div className="flex-1 overflow-y-auto divide-y divide-border font-sans">
+        <div className="flex-1 min-h-0 overflow-y-auto divide-y divide-border font-sans">
           {serverSessions.length === 0 && (
             <div className="p-4 text-center text-muted-foreground text-xs font-mono">
               참여 협상 세션이 없습니다. (리스트가 비어 있습니다)
@@ -91,7 +91,7 @@ export function ChatTab({
           </div>
         </div>
 
-        <div className="flex-1 p-4 overflow-y-auto space-y-4">
+        <div className="flex-1 min-h-0 p-4 overflow-y-auto space-y-4">
           {!effectiveSessionId ? (
             <div className="h-full flex items-center justify-center text-muted-foreground font-mono text-xs">
               선택된 협력사가 없습니다.
diff --git a/negodata/front/src/features/quotations/components/QuotationDetailSheet/DrawerHeaderCards.tsx b/negodata/front/src/features/quotations/components/QuotationDetailSheet/DrawerHeaderCards.tsx
index 347c3c7..c8dd522 100644
--- a/negodata/front/src/features/quotations/components/QuotationDetailSheet/DrawerHeaderCards.tsx
+++ b/negodata/front/src/features/quotations/components/QuotationDetailSheet/DrawerHeaderCards.tsx
@@ -11,6 +11,7 @@ import {
   type QuotationSetting,
   buildBidSummary,
   quotationTypeLabel,
+  fmtDateTime,
 } from '../../types';
 
 const fmtYn = (b: boolean | null | undefined, yes: string, no: string) =>
@@ -43,13 +44,16 @@ export function DrawerHeaderCards({
   currentProduct,
 }: DrawerHeaderCardsProps) {
   // Quotations DDL 표시값
-  const q_name = quotation.name || '미지정';
-  const q_number = quotation.number || 'EST-000000-0000';
+  const q_name = quotation.name || '-';
+  const q_number = quotation.number || '-';
   const q_round = quotation.round || 1;
-  const q_end_time = quotation.end_time || '미지정';
-  const q_manager_name = quotation.manager_name || '홍길동 파트너';
-  const q_manager_email = quotation.manager_email || 'gildong@negodata.com';
-  const q_memo = quotation.memo || '안내사항 없음';
+  const q_end_time = quotation.end_time ? fmtDateTime(quotation.end_time) : '-';
+  const q_created_at = fmtDateTime(quotation.created_at);
+  const q_manager =
+    quotation.manager_name || quotation.manager_email
+      ? `${quotation.manager_name || '-'} (${quotation.manager_email || '-'})`
+      : '-';
+  const q_memo = quotation.memo || '-';
 
   const bidSummaryObj = buildBidSummary(quotation, partners);
   const selectedSettingObj = quotationSettings.find((qs) => qs.qt_setting_id === quotation.qt_setting_id);
@@ -85,7 +89,8 @@ export function DrawerHeaderCards({
               <QuotationStatusBadge status={quotation.status} />
             </InfoField>
             <InfoField label="마감시각" value={q_end_time} />
-            <InfoField label="담당자" value={`${q_manager_name} (${q_manager_email})`} valueClassName="font-sans" />
+            <InfoField label="생성일" value={q_created_at} />
+            <InfoField label="담당자" value={q_manager} valueClassName="font-sans" />
             <InfoField
               label="메모"
               value={q_memo}
diff --git a/negodata/front/src/features/quotations/components/QuotationDetailSheet/RegenerateModal.tsx b/negodata/front/src/features/quotations/components/QuotationDetailSheet/RegenerateModal.tsx
new file mode 100644
index 0000000..89b0225
--- /dev/null
+++ b/negodata/front/src/features/quotations/components/QuotationDetailSheet/RegenerateModal.tsx
@@ -0,0 +1,117 @@
+import { useState } from 'react';
+import { X, RefreshCw, Loader2 } from 'lucide-react';
+import { Button } from '@/components/ui/button';
+import { Typography } from '@/components/ui/typography';
+import { type Partner, sessionStatusLabel } from '../../types';
+
+type RegenerateModalProps = {
+  open: boolean;
+  /** 현재 견적에 연결된 공급사만. */
+  partners: Partner[];
+  /** 공급사별 협상 단계(세션 상태 코드) — 행에 함께 표시. */
+  sessionStatusBySupplier?: Record<string, number>;
+  /** 기본 선택 = 원 라운드의 공급사들. */
+  defaultSupplierIds: string[];
+  /** 확정 → 재생성 호출. 성공(true) 시 모달 닫힘. */
+  onConfirm: (supplierIds: string[]) => Promise<boolean> | boolean;
+  onClose: () => void;
+};
+
+// 마감된 견적의 '다음 라운드'를 만들 때 부를 공급사를 고르는 모달.
+// 상품·견적번호·협상기간·카드는 원 견적에서 이어받으므로 여기선 공급사만 선택한다.
+export function RegenerateModal({ open, partners, sessionStatusBySupplier, defaultSupplierIds, onConfirm, onClose }: RegenerateModalProps) {
+  const [selected, setSelected] = useState<string[]>(defaultSupplierIds);
+  const [submitting, setSubmitting] = useState(false);
+  if (!open) return null;
+
+  const toggle = (id: string) =>
+    setSelected((prev) => (prev.includes(id) ? prev.filter((p) => p !== id) : [...prev, id]));
+
+  // 공급사 1곳=재협상(1:1), 여러 곳=재견적(1:N) — 백엔드 타입 자동결정과 동일하게 미리 안내.
+  const nextTypeLabel = selected.length <= 1 ? '재협상 (1:1)' : '재견적 (1:N)';
+
+  const handle = async () => {
+    if (submitting || selected.length === 0) return;
+    setSubmitting(true);
+    try {
+      const ok = await onConfirm(selected);
+      if (ok) onClose();
+    } finally {
+      setSubmitting(false);
+    }
+  };
+
+  return (
+    <div className="fixed inset-0 z-[55] flex items-center justify-center bg-black/40 backdrop-blur-xs">
+      <div className="w-full max-w-md bg-card border border-border rounded-lg shadow-2xl p-6 animate-scale-up font-mono">
+        {/* Header */}
+        <div className="flex items-center justify-between pb-4 border-b border-border">
+          <div className="flex items-center gap-2">
+            <RefreshCw className="text-foreground" size={16} />
+            <Typography variant="small" className="font-bold">다음 견적 재생성</Typography>
+          </div>
+          <button onClick={onClose} className="p-1 rounded text-muted-foreground hover:bg-muted cursor-pointer">
+            <X size={18} />
+          </button>
+        </div>
+
+        {/* Body */}
+        <div className="my-4 space-y-3 text-xs">
+          <Typography as="span" variant="small" className="text-muted-foreground block leading-relaxed">
+            상품 · 견적번호 · 협상기간 · 카드는 이 견적에서 이어받습니다. 다음 견적에 부를 공급사만 고르세요.
+          </Typography>
+          <div className="border border-border rounded overflow-hidden max-h-56 overflow-y-auto divide-y divide-border bg-background">
+            {partners.map((part) => {
+              const isChecked = selected.includes(part.id ?? '');
+              return (
+                <label
+                  key={part.id}
+                  className="flex items-center justify-between gap-2.5 p-3 hover:bg-muted/30 cursor-pointer transition-colors"
+                >
+                  <div className="flex items-center gap-2.5 min-w-0">
+                    <input
+                      type="checkbox"
+                      checked={isChecked}
+                      onChange={() => toggle(part.id ?? '')}
+                      className="accent-primary h-4 w-4 shrink-0"
+                    />
+                    <div className="min-w-0">
+                      <Typography as="span" variant="small" className="font-semibold block truncate">{part.name}</Typography>
+                      <Typography as="span" variant="small" className="text-muted-foreground">
+                        이메일: {part.managerEmail} · 등급: {part.rank}
+                      </Typography>
+                    </div>
+                  </div>
+                  {sessionStatusBySupplier?.[part.id ?? ''] != null && (
+                    <span className="shrink-0 text-[9px] font-mono px-1.5 py-0.5 rounded-full border border-border bg-muted text-muted-foreground">
+                      {sessionStatusLabel(sessionStatusBySupplier[part.id ?? ''])}
+                    </span>
+                  )}
+                </label>
+              );
+            })}
+          </div>
+          <div className="flex items-center justify-between text-[11px] text-muted-foreground">
+            <span>선택: <b className="text-foreground">{selected.length}</b>곳</span>
+            <span>유형: <b className="text-foreground">{nextTypeLabel}</b></span>
+          </div>
+        </div>
+
+        {/* Footer */}
+        <div className="flex justify-end gap-2 pt-4 border-t border-border">
+          <Button type="button" variant="outline" size="sm" onClick={onClose}>취소</Button>
+          <Button type="button" size="sm" onClick={handle} disabled={submitting || selected.length === 0}>
+            {submitting ? (
+              <>
+                <Loader2 className="animate-spin mr-1" size={14} />
+                생성 중…
+              </>
+            ) : (
+              '다음 견적 생성'
+            )}
+          </Button>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/negodata/front/src/features/quotations/components/QuotationDetailSheet/RoundTimeline.tsx b/negodata/front/src/features/quotations/components/QuotationDetailSheet/RoundTimeline.tsx
new file mode 100644
index 0000000..e72ca70
--- /dev/null
+++ b/negodata/front/src/features/quotations/components/QuotationDetailSheet/RoundTimeline.tsx
@@ -0,0 +1,47 @@
+import { Fragment } from 'react';
+import { ChevronRight } from 'lucide-react';
+import { useQuotationChain } from '../../hooks/useQuotationChain';
+
+type RoundTimelineProps = {
+  /** 현재 견적의 견적번호(체인 키). */
+  number: string;
+  /** 현재 보고 있는 견적 id — 타임라인에서 하이라이트. */
+  currentQtId: string;
+  /** 다른 라운드 칩 클릭 → 그 라운드 상세로 전환. */
+  onSwitchRound: (qtId: string) => void;
+};
+
+// 같은 견적번호의 라운드 흐름(1차 → 2차 → ...). 라운드 1개뿐이면(재생성 없음) 렌더 안 함.
+export function RoundTimeline({ number, currentQtId, onSwitchRound }: RoundTimelineProps) {
+  const { rounds } = useQuotationChain(number);
+  if (rounds.length <= 1) return null;
+
+  return (
+    <div className="flex items-center gap-1 mt-2 flex-wrap">
+      <span className="text-[10px] text-muted-foreground font-mono mr-1 uppercase tracking-wider">
+        견적 차수
+      </span>
+      {rounds.map((r, i) => {
+        const isCurrent = r.qt_id === currentQtId;
+        return (
+          <Fragment key={r.qt_id}>
+            {i > 0 && <ChevronRight size={11} className="text-muted-foreground/40" />}
+            <button
+              type="button"
+              onClick={() => !isCurrent && onSwitchRound(r.qt_id)}
+              disabled={isCurrent}
+              title={`${r.round}차 견적`}
+              className={`inline-flex items-center gap-1 px-2 py-0.5 rounded-full text-[10px] font-bold border transition-colors ${
+                isCurrent
+                  ? 'bg-primary text-primary-foreground border-primary cursor-default'
+                  : 'bg-muted text-foreground border-border hover:bg-muted-foreground/15 cursor-pointer'
+              }`}
+            >
+              {r.round}차 견적
+            </button>
+          </Fragment>
+        );
+      })}
+    </div>
+  );
+}
diff --git a/negodata/front/src/features/quotations/components/QuotationDetailSheet/StatusPill.tsx b/negodata/front/src/features/quotations/components/QuotationDetailSheet/StatusPill.tsx
index 1120e1c..39c9a7c 100644
--- a/negodata/front/src/features/quotations/components/QuotationDetailSheet/StatusPill.tsx
+++ b/negodata/front/src/features/quotations/components/QuotationDetailSheet/StatusPill.tsx
@@ -44,11 +44,11 @@ export function sessionStatusTone(status?: number | null): PillTone {
   return 'emerald';
 }
 
-/* ── 견적 상태 배지 (헤더, dot + border + 견적생성 시 pulse) ──
-   작은 pill 들과 모양이 달라(테두리·점·pulse) 별도 컴포넌트로 둔다. */
+/* ── 견적 상태 배지 (헤더, dot + border) ──
+   작은 pill 들과 모양이 달라(테두리·점) 별도 컴포넌트로 둔다. */
 const QSTATUS_TONE: Record<QuotationStatus, { box: string; dot: string }> = {
   [QuotationStatus.CREATED]: {
-    box: 'bg-amber-100 text-amber-800 border-amber-300 dark:bg-amber-950/40 dark:text-amber-300 dark:border-amber-700/50 animate-pulse',
+    box: 'bg-amber-100 text-amber-800 border-amber-300 dark:bg-amber-950/40 dark:text-amber-300 dark:border-amber-700/50',
     dot: 'bg-amber-500',
   },
   [QuotationStatus.ACTIVE]: {
diff --git a/negodata/front/src/features/quotations/components/QuotationDetailSheet/index.tsx b/negodata/front/src/features/quotations/components/QuotationDetailSheet/index.tsx
index 6af33b5..beadb82 100644
--- a/negodata/front/src/features/quotations/components/QuotationDetailSheet/index.tsx
+++ b/negodata/front/src/features/quotations/components/QuotationDetailSheet/index.tsx
@@ -1,5 +1,5 @@
 import { useState } from 'react';
-import { CheckCircle2, X, UserCheck, MessageSquare, Layers } from 'lucide-react';
+import { CheckCircle2, X, UserCheck, MessageSquare, Layers, RefreshCw } from 'lucide-react';
 import { Typography } from '@/components/ui/typography';
 import {
   useGetQuotationSessions,
@@ -9,6 +9,8 @@ import {
 import { useGetItem } from '@/api/generated/item/item';
 import { useListSuppliers } from '@/api/generated/supplier/supplier';
 import { useListSettings } from '@/api/generated/quotation-setting/quotation-setting';
+import { useQuotationChain } from '../../hooks/useQuotationChain';
+import { useScrollLock } from '@/lib/useScrollLock';
 import type { QuotationData } from '@/api/generated/model/quotationData';
 import {
   mapItem,
@@ -19,6 +21,8 @@ import {
 } from '../../types';
 import { QuotationStatus } from '@/api/generated/model';
 import { DrawerHeaderCards } from './DrawerHeaderCards';
+import { RoundTimeline } from './RoundTimeline';
+import { RegenerateModal } from './RegenerateModal';
 import { SessionsStatusTab } from './SessionsStatusTab';
 import { QuotationCardsTab } from './QuotationCardsTab';
 import { ChatTab } from './ChatTab';
@@ -28,18 +32,26 @@ type DrawerTab = 'status' | 'cards' | 'chat';
 type QuotationDetailSheetProps = {
   quotation: QuotationData;
   onCloseQuotation: (id: string, name: string) => void;
+  /** 라운드 타임라인에서 다른 차수로 전환(같은 견적번호의 다른 견적 상세 열기). */
+  onSwitchRound: (qtId: string) => void;
+  /** 마감된 견적의 다음 라운드를 수동 생성(공급사 선택). 성공 시 새 qt_id 반환. */
+  onRegenerate: (qtId: string, supplierIds: string[]) => Promise<string | null>;
   onClose: () => void;
 };
 
 export function QuotationDetailSheet({
   quotation,
   onCloseQuotation,
+  onSwitchRound,
+  onRegenerate,
   onClose,
 }: QuotationDetailSheetProps) {
   const [activeTab, setActiveTab] = useState<DrawerTab>('status');
   const [showHeaderCards, setShowHeaderCards] = useState(true);
+  const [regenOpen, setRegenOpen] = useState(false);
+  // 시트 열린 동안 뒤 견적 리스트(<main>) 스크롤 잠금 — 옆에 배경 스크롤바가 같이 뜨는 것 방지.
+  useScrollLock();
 
-  // 협력사·견적세팅 목록은 sheet 안에서 직접 서버(orval)로 읽는다(부모 props 의존 제거).
   const suppliersQuery = useListSuppliers({ size: 100 });
   const settingsQuery = useListSettings();
   const partners = (suppliersQuery.data?.suppliers ?? []).map(mapSupplier);
@@ -49,23 +61,38 @@ export function QuotationDetailSheet({
 
   const qtId = quotation.qt_id ?? '';
   // 협상 세션·사용 카드는 견적 단위, 채팅은 선택 세션 단위로 서버에서 읽는다.
-  const sessionsQuery = useGetQuotationSessions(qtId, { query: { enabled: !!qtId } });
+  // 세션은 협상 진행으로 계속 바뀌므로 탭 복귀 시 재조회한다. 카드는 생성 후 불변이라 끄둔다.
+  const sessionsQuery = useGetQuotationSessions(qtId, {
+    query: { enabled: !!qtId, refetchOnWindowFocus: true },
+  });
   const cardsQuery = useGetQuotationCards(qtId, { query: { enabled: !!qtId } });
   const serverSessions = sessionsQuery.data?.sessions ?? [];
   const serverCards = cardsQuery.data?.cards ?? [];
+  // 재생성 모달 기본 선택 = 이 라운드에 부른 공급사들(세션 distinct supplier).
+  const currentSupplierIds = [...new Set(serverSessions.map((s) => s.supplier_id))];
+  // 재생성 모달엔 '현재 견적에 연결된 공급사'만 + 각자의 협상 단계(세션 상태)를 함께 보여준다.
+  const connectedPartners = partners.filter((p) => currentSupplierIds.includes(p.id ?? ''));
+  const sessionStatusBySupplier: Record<string, number> = Object.fromEntries(
+    serverSessions.map((s) => [s.supplier_id, s.status]),
+  );
+
+  // 재생성 버튼은 '체인의 마지막 차수(마감됨)'에서만 노출. 체인 로딩 끝난 뒤 판정해 옛 라운드에서 깜빡임 방지.
+  const { rounds: chainRounds, isLoading: chainLoading } = useQuotationChain(quotation.number);
+  const maxRound = chainRounds.length ? Math.max(...chainRounds.map((r) => r.round)) : (quotation.round ?? 1);
+  const isLatestRound = (quotation.round ?? 1) >= maxRound;
+  const canRegenerate = !chainLoading && quotation.status === QuotationStatus.CLOSED && isLatestRound;
 
   const [selectedSessionId, setSelectedSessionId] = useState<string | null>(null);
   const effectiveSessionId = selectedSessionId ?? serverSessions[0]?.session_id ?? null;
   const chatQuery = useGetSessionChat(effectiveSessionId ?? '', {
-    query: { enabled: !!effectiveSessionId },
+    query: { enabled: !!effectiveSessionId, refetchOnWindowFocus: true },
   });
   const chatMessages = chatQuery.data?.messages ?? [];
 
   const currentSession = serverSessions.find((s) => s.session_id === effectiveSessionId);
   const currentSupplierName =
     partners.find((p) => p.id === currentSession?.supplier_id)?.name || currentSession?.supplier_id || '-';
-  // 견적 1건 = 상품 1개(item_ids:[productId])라 모든 세션이 같은 상품을 공유한다.
-  // 카탈로그 전체 대신 그 상품 1건만 단건 조회 → 상품 수가 늘어도 무관하고, 상품 id 별로 캐시된다.
+
   const itemId = serverSessions[0]?.item_id ?? '';
   const itemQuery = useGetItem(itemId, { query: { enabled: !!itemId } });
   const currentItem = itemQuery.data?.item;
@@ -78,12 +105,13 @@ export function QuotationDetailSheet({
   const quotationCardViews = serverCards.map(mapServerCardView);
 
   // 헤더 상단바·마감 버튼에 필요한 최소 표시값만 (나머지 견적 표시값은 DrawerHeaderCards 내부 계산).
-  const q_name = quotation.name || '미지정';
-  const q_number = quotation.number || 'EST-000000-0000';
+  const q_name = quotation.name || '-';
+  const q_number = quotation.number || '-';
 
   const goToChat = (sessionId: string) => {
     setSelectedSessionId(sessionId);
     setActiveTab('chat');
+    setShowHeaderCards(false); // 채팅 진입 시 대화 영역 넓게 — 견적 상세 정보 접기
   };
 
   const tabs: { id: DrawerTab; label: string; icon: typeof UserCheck }[] = [
@@ -96,16 +124,19 @@ export function QuotationDetailSheet({
     <div className="fixed inset-0 z-40 bg-black/40 backdrop-blur-xs flex justify-end animate-fade-in">
       <div className="flex-1 cursor-pointer" onClick={onClose} />
 
-      <div className="w-full max-w-5xl bg-card border-l border-border h-full flex flex-col justify-between shadow-2xl overflow-hidden animate-slide-left">
+      <div className="w-full max-w-5xl bg-card border-l border-border h-full flex flex-col shadow-2xl overflow-hidden animate-slide-left">
 
-        {/* Header */}
-        <div className="p-6 border-b border-border bg-muted/30">
+        {/* Header title bar (고정) */}
+        <div className={`shrink-0 px-6 pt-6 bg-muted/30 ${showHeaderCards ? 'pb-3' : 'pb-6 border-b border-border'}`}>
           <div className="flex items-start justify-between">
             <div>
               <div className="flex items-center gap-2 text-muted-foreground text-[10px] font-mono tracking-widest uppercase">
                 <span>견적 상세 // {q_number}</span>
               </div>
               <Typography variant="h3" className="mt-1">{q_name}</Typography>
+              {quotation.number && (
+                <RoundTimeline number={quotation.number} currentQtId={qtId} onSwitchRound={onSwitchRound} />
+              )}
             </div>
 
             <div className="flex items-center gap-2">
@@ -115,6 +146,16 @@ export function QuotationDetailSheet({
               >
                 <span>{showHeaderCards ? '견적 상세 정보 접기 ▲' : '견적 상세 정보 펼치기 ▼'}</span>
               </button>
+              {/* 마감된 '마지막 차수'에서만 다음 라운드 수동 재생성(공급사는 모달에서 선택). 서버도 비-마지막은 에러로 방어. */}
+              {canRegenerate && (
+                <button
+                  onClick={() => setRegenOpen(true)}
+                  className="flex items-center gap-1 px-3 py-1.5 bg-violet-600 hover:bg-violet-700 text-white rounded text-xs font-semibold cursor-pointer transition-colors"
+                >
+                  <RefreshCw size={14} />
+                  <span>다음 견적 재생성</span>
+                </button>
+              )}
               {/* 마감 버튼은 항상 노출하되, 마감 가능한 상태(생성·진행중·보류)가 아니면 비활성화만 한다. */}
               {(() => {
                 const canClose = quotation.status !== QuotationStatus.CLOSED;
@@ -123,7 +164,7 @@ export function QuotationDetailSheet({
                     onClick={() => onCloseQuotation(quotation.qt_id ?? '', q_name)}
                     disabled={!canClose}
                     title={canClose ? undefined : '이미 마감된 견적입니다.'}
-                    className="flex items-center gap-1 px-3 py-1.5 bg-red-600 hover:bg-rose-700 text-white rounded text-xs font-semibold cursor-pointer transition-colors disabled:opacity-50 disabled:cursor-not-allowed disabled:hover:bg-red-600"
+                    className="flex items-center gap-1 px-3 py-1.5 bg-red-600 hover:bg-rose-700 text-white rounded text-xs font-semibold cursor-pointer transition-colors disabled:opacity-30 disabled:cursor-not-allowed disabled:hover:bg-red-600"
                   >
                     <CheckCircle2 size={14} />
                     <span>견적 마감</span>
@@ -138,20 +179,25 @@ export function QuotationDetailSheet({
               </button>
             </div>
           </div>
+        </div>
 
-          {/* DB mapping info cards */}
-          {showHeaderCards && (
+        {/* 견적 상세 정보 — 탭과 flex 비율(헤더:탭 = 2:1)로 높이를 나눠 가지고 자체 스크롤 */}
+        {showHeaderCards && (
+          <div
+            style={{ flex: '2 1 0%' }}
+            className="min-h-0 overflow-y-auto px-6 pb-6 bg-muted/30 border-b border-border"
+          >
             <DrawerHeaderCards
               quotation={quotation}
               partners={partners}
               quotationSettings={quotationSettings}
               currentProduct={currentProduct}
             />
-          )}
-        </div>
+          </div>
+        )}
 
         {/* Tabs */}
-        <div className="border-b border-border bg-background px-6">
+        <div className="shrink-0 border-b border-border bg-background px-6">
           <div className="flex gap-4">
             {tabs.map((tab) => {
               const Icon = tab.icon;
@@ -183,7 +229,7 @@ export function QuotationDetailSheet({
         </div>
 
         {/* Tab content */}
-        <div className="flex-1 p-6 overflow-y-auto bg-background/50">
+        <div style={{ flex: '1 1 0%' }} className="min-h-0 p-6 overflow-y-auto bg-background/50">
           {activeTab === 'status' && (
             <SessionsStatusTab sessionViews={sessionViews} onOpenChat={goToChat} />
           )}
@@ -204,6 +250,24 @@ export function QuotationDetailSheet({
           )}
         </div>
       </div>
+
+      {regenOpen && (
+        <RegenerateModal
+          open
+          partners={connectedPartners}
+          sessionStatusBySupplier={sessionStatusBySupplier}
+          defaultSupplierIds={currentSupplierIds}
+          onConfirm={async (ids) => {
+            const newId = await onRegenerate(qtId, ids);
+            if (newId) {
+              onSwitchRound(newId); // 새 라운드 상세로 전환
+              return true;
+            }
+            return false;
+          }}
+          onClose={() => setRegenOpen(false)}
+        />
+      )}
     </div>
   );
 }
diff --git a/negodata/front/src/features/quotations/components/QuotationTable.tsx b/negodata/front/src/features/quotations/components/QuotationTable.tsx
index a5bca96..293a3d9 100644
--- a/negodata/front/src/features/quotations/components/QuotationTable.tsx
+++ b/negodata/front/src/features/quotations/components/QuotationTable.tsx
@@ -1,5 +1,5 @@
 import type { ReactNode } from 'react';
-import { Clock, Building2 } from 'lucide-react';
+import { Clock, Building2, Link2 } from 'lucide-react';
 import { DataTable } from '@/components/ui/data-table';
 import { type Estimate, type Product, quotationStatusLabel, quotationTypeLabel } from '../types';
 import { QuotationType, QuotationStatus } from '@/api/generated/model';
@@ -8,13 +8,15 @@ type QuotationTableProps = {
   data: Estimate[];
   products: Product[];
   onOpenDetail: (id: string) => void;
+  /** 견적번호 클릭 → 그 번호로 목록 필터(같은 체인의 차수만 모아 보기). */
+  onFilterChain?: (number: string) => void;
   footer?: ReactNode;
 };
 
 const statusBadgeClass = (status?: number | null) => {
   switch (status) {
     case QuotationStatus.CREATED:
-      return 'bg-yellow-50 text-yellow-700 border-yellow-300 animate-pulse';
+      return 'bg-yellow-50 text-yellow-700 border-yellow-300';
     case QuotationStatus.ACTIVE:
       return 'bg-emerald-50 text-emerald-700 dark:bg-emerald-950/25 dark:text-emerald-400 border-emerald-300/40';
     case QuotationStatus.CLOSED:
@@ -26,7 +28,7 @@ const statusBadgeClass = (status?: number | null) => {
   }
 };
 
-export function QuotationTable({ data, products, onOpenDetail, footer }: QuotationTableProps) {
+export function QuotationTable({ data, products, onOpenDetail, onFilterChain, footer }: QuotationTableProps) {
   return (
     <DataTable
       data={data}
@@ -56,7 +58,23 @@ export function QuotationTable({ data, products, onOpenDetail, footer }: Quotati
         {
           header: '견적번호',
           cellClassName: 'font-mono text-muted-foreground',
-          cell: (est) => est.number,
+          cell: (est) =>
+            onFilterChain && est.number ? (
+              <button
+                type="button"
+                onClick={(e) => {
+                  e.stopPropagation(); // 행 클릭(상세 열기) 대신 체인 필터만
+                  onFilterChain(est.number!);
+                }}
+                title="이 견적번호의 모든 차수만 보기"
+                className="inline-flex items-center gap-1 hover:text-primary hover:underline cursor-pointer"
+              >
+                <Link2 size={11} className="opacity-60" />
+                {est.number}
+              </button>
+            ) : (
+              est.number
+            ),
         },
         {
           header: '유형',
@@ -100,6 +118,11 @@ export function QuotationTable({ data, products, onOpenDetail, footer }: Quotati
             </div>
           ),
         },
+        {
+          header: '생성일',
+          cellClassName: 'font-mono text-muted-foreground whitespace-nowrap',
+          cell: (est) => est.createdDate ?? '-',
+        },
         {
           header: '협력사수',
           align: 'center',
diff --git a/negodata/front/src/features/quotations/hooks/useQuotationChain.ts b/negodata/front/src/features/quotations/hooks/useQuotationChain.ts
new file mode 100644
index 0000000..008e6fa
--- /dev/null
+++ b/negodata/front/src/features/quotations/hooks/useQuotationChain.ts
@@ -0,0 +1,26 @@
+import { keepPreviousData } from '@tanstack/react-query';
+import { useListQuotations } from '@/api/generated/quotation/quotation';
+import { chainRoundState, type ChainRoundState } from '../types';
+
+export type ChainRound = {
+  qt_id: string;
+  round: number;
+  state: ChainRoundState;
+};
+
+// 같은 견적번호(체인)의 모든 차수를 라운드 오름차순으로 돌려준다.
+// 체인은 parent_id 없이 number 공유로만 묶이므로, 목록 검색(number ILIKE)으로 모은 뒤
+// 정확매칭(q.number === number)으로 좁힌다 — search 가 이름까지 매칭하는 오염을 제거.
+// 재생성은 사유별 1회 한도라 체인은 최대 ~3라운드 → size 한 번이면 전부 들어온다.
+export function useQuotationChain(number?: string | null) {
+  const enabled = !!number;
+  const query = useListQuotations(
+    { search: number ?? undefined, size: 50 },
+    { query: { enabled, placeholderData: keepPreviousData } },
+  );
+  const rounds: ChainRound[] = (query.data?.quotations ?? [])
+    .filter((q) => q.number === number)
+    .map((q) => ({ qt_id: q.qt_id, round: q.round ?? 1, state: chainRoundState(q) }))
+    .sort((a, b) => a.round - b.round);
+  return { rounds, isLoading: enabled && query.isLoading };
+}
diff --git a/negodata/front/src/features/quotations/hooks/useQuotations.ts b/negodata/front/src/features/quotations/hooks/useQuotations.ts
index dcfb2cf..372e4aa 100644
--- a/negodata/front/src/features/quotations/hooks/useQuotations.ts
+++ b/negodata/front/src/features/quotations/hooks/useQuotations.ts
@@ -14,6 +14,7 @@ import {
   useListQuotations,
   useCreateQuotation,
   useStopQuotation,
+  useRegenerateQuotation,
   getGetQuotationQueryKey,
   getGetQuotationSessionsQueryKey,
 } from '@/api/generated/quotation/quotation';
@@ -21,6 +22,7 @@ import type { ListQuotationsParams } from '@/api/generated/model/listQuotationsP
 import type { ReqCreateQuotation } from '@/api/generated/model/reqCreateQuotation';
 import { showToast } from '@/lib/notify';
 import { confirm } from '@/lib/confirm';
+import { useAuthStore } from '@/stores/auth';
 import type { Estimate } from '../types';
 import { mapItem, mapSupplier, mapSetting, mapQuotation } from '../types';
 import { QuotationStatus } from '@/api/generated/model';
@@ -33,6 +35,7 @@ export type CreateQuotationInput = {
   dueDate: string; // datetime-local 원본값
   settingId: string;
   cardIds: string[];
+  memo: string;
 };
 
 export type SettingInput = {
@@ -56,6 +59,7 @@ export function useQuotations(params: ListQuotationsParams) {
   const deleteSettingMutation = useDeleteSetting();
   const createQuotationMutation = useCreateQuotation();
   const stopQuotationMutation = useStopQuotation();
+  const regenerateQuotationMutation = useRegenerateQuotation();
 
   // 파라미터별 목록 쿼리 키 전부 재조회(prefix 무효화).
   const invalidateQuotations = () =>
@@ -165,6 +169,8 @@ export function useQuotations(params: ListQuotationsParams) {
       return null;
     }
 
+    // 담당자는 로그인 유저(개인정보 store)에서 그대로 채워 보낸다 — 견적 생성자 = 담당자.
+    const me = useAuthStore.getState().user;
     const payload: ReqCreateQuotation = {
       qt_setting_id: input.settingId,
       name: input.title,
@@ -173,11 +179,15 @@ export function useQuotations(params: ListQuotationsParams) {
       item_ids: [input.productId],
       supplier_ids: input.partnerIds,
       card_ids: input.cardIds,
+      manager_name: me?.name || undefined,
+      manager_email: me?.email || undefined,
+      manager_contact_number: me?.contact || undefined,
+      memo: input.memo.trim() || undefined,
     };
 
     try {
       const res = await createQuotationMutation.mutateAsync({ data: payload });
-      const qtId = res?.quotation?.qt_id ?? null;
+      const qtId = res?.qt_id ?? null;
       // 에러는 응답 패킷 규약(result.success/code/desc + msg)대로 표시한다. HTTP 200 이어도 success=false면 실패.
       if (!res?.result?.success || !qtId) {
         const reason = res?.msg ?? res?.result?.desc ?? '서버 오류';
@@ -187,7 +197,7 @@ export function useQuotations(params: ListQuotationsParams) {
       }
       // 목록 재조회가 끝나야 새 견적이 정본 목록에 들어온다(상세 자동오픈이 그 행을 찾을 수 있게).
       await invalidateQuotations();
-      showToast(`협상견적[${input.title}] 생성 완료 — 협상 세션 ${res?.sessions?.length ?? 0}건.`, 'success');
+      showToast(`협상견적[${input.title}] 생성 완료 — 협상 세션 ${res?.session_count ?? 0}건.`, 'success');
       return qtId;
     } catch {
       showToast('견적 생성에 실패했습니다. 입력값을 확인해 주세요.', 'error');
@@ -195,6 +205,31 @@ export function useQuotations(params: ListQuotationsParams) {
     }
   };
 
+  // 마감된 견적을 골라 다음 라운드를 수동 생성한다(공급사는 프론트 선택, 상품·번호·기간은 원 견적 승계).
+  // 성공 시 새 라운드 qt_id 반환, 실패/검증오류 시 null.
+  const regenerateQuotation = async (qtId: string, supplierIds: string[]): Promise<string | null> => {
+    if (supplierIds.length === 0) {
+      showToast('다음 견적에 부를 공급사를 한 곳 이상 선택해 주세요.', 'error');
+      return null;
+    }
+    try {
+      const res = await regenerateQuotationMutation.mutateAsync({ qtId, data: { supplier_ids: supplierIds } });
+      const newId = res?.qt_id ?? null;
+      if (!res?.result?.success || !newId) {
+        const reason = res?.msg ?? res?.result?.desc ?? '서버 오류';
+        const code = res?.result?.code;
+        showToast(`재생성 실패${code ? ` [${code}]` : ''}: ${reason}`, 'error');
+        return null;
+      }
+      await invalidateQuotations();
+      showToast(`다음 견적이 생성되었습니다 — 협상 세션 ${res?.session_count ?? 0}건.`, 'success');
+      return newId;
+    } catch {
+      showToast('견적 재생성에 실패했습니다. 잠시 후 다시 시도해 주세요.', 'error');
+      return null;
+    }
+  };
+
   return {
     products,
     partners,
@@ -206,5 +241,6 @@ export function useQuotations(params: ListQuotationsParams) {
     addSetting,
     deleteSetting,
     createQuotation,
+    regenerateQuotation,
   };
 }
diff --git a/negodata/front/src/features/quotations/types.ts b/negodata/front/src/features/quotations/types.ts
index 50d1f0f..a5970d7 100644
--- a/negodata/front/src/features/quotations/types.ts
+++ b/negodata/front/src/features/quotations/types.ts
@@ -14,6 +14,7 @@ export type { Product, Partner, NegotiationCard } from '@/types';
 export type Estimate = Partial<QuotationData> & {
   id?: string;
   dueDate?: string;
+  createdDate?: string;
   title?: string;
   productId?: string;
   productName?: string;
@@ -81,6 +82,7 @@ export function mapQuotation(q: QuotationData): Estimate {
     productId: q.item_id ?? undefined, // 서버 목록 조인(세션 대표 상품). products 목록과 id 매칭용
     productName: q.item_name ?? undefined, // products 목록에 없을 때 표기 폴백
     dueDate: formatDueDate(q.end_time),
+    createdDate: fmtDateTime(q.created_at),
     participationCount: q.participation_count ?? 0,
     winnerPartnerId: q.preferred_sp_id ?? q.preferred_sp_name ?? null,
     isEqualPrice: !!q.equal_bid_yn,
@@ -89,13 +91,30 @@ export function mapQuotation(q: QuotationData): Estimate {
   };
 }
 
-// 서버 end_time(ISO) → 'YYYY-MM-DD HH:mm' 표기. 파싱 실패 시 원본 유지.
+// 서버가 주는 시각 문자열은 타임존 표식이 없는 UTC다. UTC로 못박은 뒤 한국시간(Asia/Seoul)으로
+// 'YYYY-MM-DD HH:mm' 포맷한다. 브라우저 로컬타임존에 의존하지 않도록 timeZone 을 명시. 파싱 실패면 null.
+function toKstDateTime(s: string): string | null {
+  const iso = /(?:Z|[+-]\d{2}:?\d{2})$/i.test(s) ? s : s + 'Z';
+  const d = new Date(iso);
+  if (Number.isNaN(d.getTime())) return null;
+  const parts = new Intl.DateTimeFormat('ko-KR', {
+    timeZone: 'Asia/Seoul',
+    hourCycle: 'h23',
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+  })
+    .formatToParts(d)
+    .reduce((o, p) => ((o[p.type] = p.value), o), {} as Record<string, string>);
+  return `${parts.year}-${parts.month}-${parts.day} ${parts.hour}:${parts.minute}`;
+}
+
+// 서버 end_time(UTC ISO) → 한국시간 표기. 파싱 실패 시 원본 유지.
 function formatDueDate(end?: string | null): string {
-  if (!end) return '미지정';
-  const d = new Date(end);
-  if (Number.isNaN(d.getTime())) return end;
-  const pad = (n: number) => String(n).padStart(2, '0');
-  return `${d.getFullYear()}-${pad(d.getMonth() + 1)}-${pad(d.getDate())} ${pad(d.getHours())}:${pad(d.getMinutes())}`;
+  if (!end) return '-';
+  return toKstDateTime(end) ?? end;
 }
 
 export type QtStatusKey = '견적생성' | '견적진행중' | '견적마감' | '협상보류';
@@ -125,6 +144,24 @@ export const QUOTATION_TYPE_OPTIONS = [QuotationType.REQUOTE, QuotationType.RENE
   label: QUOTATION_TYPE_LABEL[value],
 }));
 
+// ── 라운드 체인(같은 견적번호) ───────────────────────────────────────────
+// 한 라운드(견적)의 결과를 한 단어로. 낙찰=종료, 동가/마감=후속 라운드 가능, 진행중=아직 안 닫힘.
+export type ChainRoundState = 'awarded' | 'equal' | 'closed' | 'active';
+export const CHAIN_ROUND_STATE_LABEL: Record<ChainRoundState, string> = {
+  awarded: '낙찰',
+  equal: '동가',
+  closed: '마감',
+  active: '진행중',
+};
+export function chainRoundState(
+  q: Pick<QuotationData, 'status' | 'preferred_sp_id' | 'equal_bid_yn'>,
+): ChainRoundState {
+  if (q.preferred_sp_id) return 'awarded';
+  if (q.equal_bid_yn) return 'equal';
+  if (q.status === QuotationStatus.CLOSED) return 'closed';
+  return 'active';
+}
+
 // ── 상세 드로어용 파생 뷰 모델(서버 미연동 영역의 목업 보강 포함) ────────
 
 export type BidSummaryView = {
@@ -190,13 +227,10 @@ export const SESSION_STATUS_LABEL: Record<SessionStatus, string> = {
 export const sessionStatusLabel = (code?: number | null): string =>
   (code != null ? SESSION_STATUS_LABEL[code as SessionStatus] : undefined) ?? String(code ?? '');
 
-// ISO 문자열 → 'YYYY-MM-DD HH:mm'. 빈 값/파싱 실패는 '-'.
+// 서버 UTC ISO 문자열 → 한국시간 'YYYY-MM-DD HH:mm'. 빈 값은 '-', 파싱 실패는 원본.
 export function fmtDateTime(s?: string | null): string {
   if (!s) return '-';
-  const d = new Date(s);
-  if (Number.isNaN(d.getTime())) return s;
-  const p = (n: number) => String(n).padStart(2, '0');
-  return `${d.getFullYear()}-${p(d.getMonth() + 1)}-${p(d.getDate())} ${p(d.getHours())}:${p(d.getMinutes())}`;
+  return toKstDateTime(s) ?? s;
 }
 
 // 서버 SessionData → 협상현황 테이블 뷰. 협력사명/상품명은 이미 로드된 목록에서 해석.
@@ -210,7 +244,7 @@ export function mapServerSessionView(sd: SessionData, partners: Partner[], produ
     supplier_id: sd.supplier_id,
     supplier_name: supplier?.name || sd.supplier_id,
     item_id: sd.item_id,
-    item_name: product?.name || '부품',
+    item_name: product?.name || '-',
     status: sd.status,
     target_price: sd.target_price ?? 0,
     bid_price: sd.bid_price ?? null,
diff --git a/negodata/front/src/lib/useOverlayRouter.ts b/negodata/front/src/lib/useOverlayRouter.ts
index b82f43e..22cf007 100644
--- a/negodata/front/src/lib/useOverlayRouter.ts
+++ b/negodata/front/src/lib/useOverlayRouter.ts
@@ -9,6 +9,7 @@ import { useLocation, useNavigate, useSearchParams } from 'react-router';
 //   overlay.has('new')         // ?new 존재 여부 — 플래그 오버레이
 //   overlay.open('detail', id) // ?detail=<id> (다른 오버레이 키는 지움) — 히스토리 push
 //   overlay.open('new')        // ?new (값 생략 시 '1')
+//   overlay.open('detail', id, { replace: true }) // 같은 오버레이 내 값만 교체(히스토리 안 쌓음)
 //   overlay.close()            // 그룹 내 모든 오버레이 키 제거
 const OVERLAY_PUSHED = '__overlayPushed';
 
@@ -29,11 +30,22 @@ export function useOverlayRouter<K extends string>(keys: readonly K[]) {
     return s ? `?${s}` : '';
   };
 
-  const open = (key: K, value = '1') =>
+  const open = (key: K, value = '1', opts?: { replace?: boolean }) => {
+    const replace = opts?.replace ?? false;
     navigate(
       { pathname: location.pathname, search: buildSearch((p) => p.set(key, value)) },
-      { state: { ...(location.state ?? {}), [OVERLAY_PUSHED]: true } },
+      {
+        replace,
+        // push: 새 히스토리 → 닫을 때 navigate(-1)로 빠지게 표식.
+        // replace(같은 오버레이 안에서 값만 교체, 예: 차수 전환): 히스토리를 안 쌓고,
+        // 원래 열림이 push였는지 표식을 그대로 물려준다(닫기 동작이 일관되게 리스트로 빠지도록).
+        state: {
+          ...(location.state ?? {}),
+          [OVERLAY_PUSHED]: replace ? location.state?.[OVERLAY_PUSHED] ?? false : true,
+        },
+      },
     );
+  };
 
   const close = () => {
     if (location.state?.[OVERLAY_PUSHED]) {
diff --git a/negodata/front/src/lib/useScrollLock.ts b/negodata/front/src/lib/useScrollLock.ts
new file mode 100644
index 0000000..bbff9f6
--- /dev/null
+++ b/negodata/front/src/lib/useScrollLock.ts
@@ -0,0 +1,30 @@
+import { useEffect } from 'react';
+
+// 오버레이(시트/모달)가 열려 있는 동안 뒤 페이지 스크롤을 잠근다.
+// 이 앱 레이아웃 루트는 min-h-screen(높이 제약 없음)이라 <main> 이 아니라 문서(html/body)가 스크롤된다.
+// 그래서 실제 스크롤 주체인 document.scrollingElement(보통 <html>)를 잠근다.
+// 중첩 오버레이 대비 카운터로 관리 — 마지막 하나가 닫힐 때만 원복.
+let lockCount = 0;
+let prevOverflow = '';
+
+function scroller(): HTMLElement {
+  return (document.scrollingElement as HTMLElement | null) ?? document.documentElement;
+}
+
+export function useScrollLock(active = true) {
+  useEffect(() => {
+    if (!active) return;
+    if (lockCount === 0) {
+      const el = scroller();
+      prevOverflow = el.style.overflow;
+      el.style.overflow = 'hidden';
+    }
+    lockCount += 1;
+    return () => {
+      lockCount -= 1;
+      if (lockCount === 0) {
+        scroller().style.overflow = prevOverflow;
+      }
+    };
+  }, [active]);
+}
diff --git a/negodata/front/src/pages/quotation.tsx b/negodata/front/src/pages/quotation.tsx
index 7784b78..4e64f69 100644
--- a/negodata/front/src/pages/quotation.tsx
+++ b/negodata/front/src/pages/quotation.tsx
@@ -40,6 +40,7 @@ export default function QuotationPage() {
     addSetting,
     deleteSetting,
     createQuotation,
+    regenerateQuotation,
   } = useQuotations(params);
   const totalPages = list.totalPages(total);
 
@@ -49,7 +50,10 @@ export default function QuotationPage() {
   const isSettingsOpen = overlay.has('settings');
 
   // 상세 요약은 리스트에서 find 하지 않고 단건 API 로 받아온다(딥링크 시 리스트 의존 제거).
-  const detailQuery = useGetQuotation(detailId ?? '', { query: { enabled: !!detailId } });
+  // 탭 복귀 시 재조회(자리비운 사이 스케줄러가 마감/낙찰/재생성했을 수 있음). 전역 기본은 false라 상세만 켠다.
+  const detailQuery = useGetQuotation(detailId ?? '', {
+    query: { enabled: !!detailId, refetchOnWindowFocus: true },
+  });
   const activeQuotation = detailQuery.data?.quotation ?? null;
 
   return (
@@ -128,6 +132,11 @@ export default function QuotationPage() {
         data={quotations}
         products={products}
         onOpenDetail={(id) => overlay.open('detail', id)}
+        onFilterChain={(number) => {
+          // 견적번호 클릭 → 검색어를 그 번호로 즉시 세팅(같은 체인의 차수만 모아 보기).
+          list.setSearch(number);
+          list.submitSearch();
+        }}
         footer={
           <TablePagination
             page={list.page}
@@ -146,6 +155,8 @@ export default function QuotationPage() {
           key={activeQuotation.qt_id}
           quotation={activeQuotation}
           onCloseQuotation={closeQuotation}
+          onSwitchRound={(qtId) => overlay.open('detail', qtId, { replace: true })}
+          onRegenerate={regenerateQuotation}
           onClose={overlay.close}
         />
       )}
diff --git a/postgres-init/03-seed-negodata.sql b/postgres-init/03-seed-negodata.sql
index 012622a..34fc05a 100644
--- a/postgres-init/03-seed-negodata.sql
+++ b/postgres-init/03-seed-negodata.sql
@@ -3,23 +3,25 @@
 -- 전체/공용 시드가 아니다. 재실행 안전(WHERE NOT EXISTS) — 운영 DB 에는 적용하지 않는다.
 -- admin 계정은 negodata 프론트 로그인 폼 기본값(admin / admin1234)에 대응한다.
 --   적용(도커 postgres): docker exec -i negosium-db psql -U postgres -d negosium_db < postgres-init/03-seed-negodata.sql
--- created_at/updated_at/deleted 은 MainTableMixin server_default 로 자동 채워져 INSERT 에 안 넣는다.
+-- created_at/updated_at/deleted 은 server_default 로 자동 채워져 INSERT 에 안 넣는다.
 
 \connect negosium_db
 
--- 회사 1개 (고정 UUID). status 1=active. code/industry 는 코드값이라 비워둠(nullable).
-INSERT INTO company.companies (name, business_number, representative_name, email, contact_number, website_url, status)
-SELECT '아이마켓코리아', '220-88-21724', '홍길동',
+-- 회사 1개 (고정 UUID — users.company_id FK 가 참조). status 1=active.
+INSERT INTO company.companies (company_id, name, business_number, representative_name, email, contact_number, website_url, status)
+SELECT 'a35152d2-db61-4760-9f1e-beb9736d957f', '아이마켓코리아', '220-88-21724', '홍길동',
        'admin@imarketkorea.com', '02-3708-5000', 'https://www.imarketkorea.com', 1
 WHERE NOT EXISTS (
-    SELECT 1 FROM company.companies WHERE company_id = '00000000-0000-0000-0000-000000000001'
+    SELECT 1 FROM company.companies WHERE company_id = 'a35152d2-db61-4760-9f1e-beb9736d957f'
 );
 
--- admin 유저. password 는 'admin123' 의 bcrypt 해시(백엔드 GetHashedPW 와 동일 알고리즘, checkpw 로 검증됨).
+-- admin 유저. company_id 는 위 회사(고정 UUID)에 묶는다(NOT NULL).
+-- password 는 'admin1234' 의 bcrypt 해시(백엔드 GetHashedPW 와 동일 알고리즘, checkpw 로 검증됨).
 -- role 2=manager (UserRole.MANAGER; ADMIN 코드는 enum 에 없어 최상위인 MANAGER 사용). status 1=active.
-INSERT INTO company.users (id, password, name, email, contact_number, last_accessed_at, status, role)
+INSERT INTO company.users (company_id, id, password, name, email, contact_number, last_accessed_at, status, role)
+SELECT 'a35152d2-db61-4760-9f1e-beb9736d957f',
        'admin',
-       '$2b$12$KY4T0kXQ2npvvt71iWZG0.JZHlMNt9angIkE/7.lBC4vta4dHgrj2',
+       '$2b$12$E.y.XVR.MxmzOMd2satUDuVhvQA4kRsNJu7lNbZA4YZf/UWVcslSy',
        '관리자', 'admin@imarketkorea.com', '02-3708-5000', now(), 1, 2
 WHERE NOT EXISTS (
     SELECT 1 FROM company.users WHERE id = 'admin' AND deleted = FALSE