[CLAUDE] PE: Workflow designer admin UI + Ý kiến 4 phòng ban (P1 Session 5)

==== Task 1: PE Workflow Designer admin ====

BE (mirror Contract WorkflowAdminFeatures pattern):
- Application/PurchaseEvaluations/PeWorkflowAdminFeatures.cs ~250 LOC:
  - GetPeWorkflowAdminOverviewQuery → list 2 EvaluationType (DuyetNcc / DuyetNccPhuongAn) với Active + History versions + count phiếu đang dùng
  - CreatePeWorkflowDefinitionCommand + Validator: auto-increment Version per Code, deactivate Active cũ trong cùng EvaluationType (1 active per type invariant)
  - DTOs: PeWorkflowStepApproverDto / PeWorkflowStepDto / PeWorkflowDefinitionDto / PeWorkflowTypeSummaryDto / PeWorkflowAdminOverviewDto
  - Phase validation 1..7 (state thường, không bao gồm 99=TuChoi)
- Api/Controllers/PeWorkflowsController.cs: 2 endpoint GET /api/pe-workflows + POST. Reuse policy "Workflows.Read" + "Workflows.Create" (admin chung quyền cho cả 2 nhóm WF).

FE:
- pages/system/PeWorkflowsPage.tsx ~500 LOC mirror WorkflowsPage:
  - Landing 2-card grid khi /system/pe-workflows (chưa pick type)
  - TypePanel khi /system/pe-workflows/:typeCode (DuyetNcc / DuyetNccPhuongAn)
  - DefinitionCard read-only view với active badge + version + steps + approvers (Role/User chip)
  - PeWorkflowDesigner dialog: clone từ existing, edit Code/Name/Description, add/remove steps, +Role / +User approvers per step, save → version mới + deactivate cũ
- App.tsx route /system/pe-workflows + /system/pe-workflows/:typeCode
- Layout đã có resolver PeWf_<Code> → /system/pe-workflows/<code> từ session 3

==== Task 2: Ý kiến 4 phòng ban PE ====

Domain:
- PurchaseEvaluationDepartmentOpinion entity (AuditableEntity) — PEId + Kind + Opinion text + SignedAt + UserId + UserName denorm
- PeDepartmentKind enum (PheDuyet / Ccm / MuaHang / SmPm)
- PE entity + collection navigation DepartmentOpinions

Infrastructure:
- PurchaseEvaluationDepartmentOpinionConfiguration EF: UNIQUE(PEId, Kind) — max 1 row per phòng ban per phiếu (UPDATE in-place)
- ApplicationDbContext + IApplicationDbContext DbSet
- Migration 15 AddPurchaseEvaluationDepartmentOpinions (15 migration total / 52 DB tables)

Application:
- PeDepartmentOpinionFeatures.cs: UpsertPeDepartmentOpinionCommand (sign=true → set SignedAt+UserId, sign=false chỉ lưu text giữ chữ ký cũ) + DeletePeDepartmentOpinionCommand
- DTO bundle update: + DepartmentOpinions list trong PurchaseEvaluationDetailBundleDto
- GetPurchaseEvaluationQueryHandler load DepartmentOpinions + KindLabel resolution

API:
- POST /api/purchase-evaluations/{id}/opinions (upsert)
- DELETE /api/purchase-evaluations/{id}/opinions/{kind}

FE:
- types/purchaseEvaluation.ts: + PeDepartmentKind enum + PeDepartmentKindLabel + PeDepartmentOpinion type + departmentOpinions vào bundle
- PeDetailTabs Section "5. Ý kiến 4 phòng ban (sign-off)" — 2x2 grid OpinionBox per kind:
  - Read mode (readOnly menu Duyệt): hiển thị text + chữ ký
  - Edit mode: textarea + 2 button "Lưu text" / "Lưu & Ký"
  - Badge "Đã ký" emerald + tên người ký + ngày khi signedAt != null

==== Task 3: User seed verify ====

Seed `SeedDemoUsersAsync` đã match đúng user list authoritative (5 PRO TPB+NV / 7 CCM TPB+NV / 1 ISO / 1 CEO) từ prior commit. DbInitializer reconcile sẽ tự sync khi API restart. Typo trong list user (soluttions / trương) đã fixed sensibly trong seed.

==== Build verify ====
- dotnet build clean (0 error)
- fe-admin TS build pass (1 module mới PeWorkflowsPage)
- fe-user TS build pass (PE detail mirror)

Total: 8 file mới (BE 4 + FE 1 + Migration 2 + 1 Domain) + 13 file modified.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fe-admin/src/App.tsx

@@ -12,6 +12,7 @@ import { CatalogsPage } from '@/pages/master/CatalogsPage'
 import { PermissionsPage } from '@/pages/system/PermissionsPage'
 import { RolesPage } from '@/pages/system/RolesPage'
 import { WorkflowsPage } from '@/pages/system/WorkflowsPage'
+import { PeWorkflowsPage } from '@/pages/system/PeWorkflowsPage'
 import { FormsPage } from '@/pages/forms/FormsPage'
 import { ContractsListPage } from '@/pages/contracts/ContractsListPage'
 import { ContractDetailPage } from '@/pages/contracts/ContractDetailPage'
@@ -47,6 +48,8 @@ function App() {
             <Route path="/system/permissions" element={<PermissionsPage />} />
             <Route path="/system/workflows" element={<WorkflowsPage />} />
             <Route path="/system/workflows/:typeCode" element={<WorkflowsPage />} />
+            <Route path="/system/pe-workflows" element={<PeWorkflowsPage />} />
+            <Route path="/system/pe-workflows/:typeCode" element={<PeWorkflowsPage />} />
             <Route path="/forms" element={<FormsPage />} />
             <Route path="/contracts" element={<ContractsListPage />} />
             <Route path="/contracts/new" element={<ContractCreatePage />} />

fe-admin/src/components/pe/PeDetailTabs.tsx

@@ -18,12 +18,15 @@ import { cn } from '@/lib/cn'
 import {
   PeAttachmentPurpose,
   PeAttachmentPurposeLabel,
+  PeDepartmentKind,
+  PeDepartmentKindLabel,
   PurchaseEvaluationPhase,
   PurchaseEvaluationPhaseColor,
   PurchaseEvaluationPhaseLabel,
   PurchaseEvaluationTypeLabel,
   type PeAttachment,
   type PeChangelog,
+  type PeDepartmentOpinion,
   type PeDetailBundle,
   type PeDetailRow,
   type PeQuote,
@@ -108,6 +111,9 @@ export function PeDetailTabs({
         <Section title={`4. Hạng mục + Báo giá (${evaluation.details.length})`}>
           <ItemsTab ev={evaluation} readOnly={readOnly} />
         </Section>
+        <Section title="5. Ý kiến 4 phòng ban (sign-off)">
+          <DepartmentOpinionsSection ev={evaluation} readOnly={readOnly} />
+        </Section>
       </div>
     </div>
   )
@@ -122,6 +128,131 @@ function Section({ title, children }: { title: string; children: React.ReactNode
   )
 }
 
+// ===== Section 5 — Ý kiến 4 phòng ban =====
+// Render 2x2 grid 4 box (Phê duyệt / CCM / MuaHàng / SM-PM). Mỗi box hiển
+// thị Opinion text + chữ ký (UserName + SignedAt) nếu đã ký, hoặc form nhập
+// + 2 button "Lưu" + "Lưu & Ký" khi chưa ký / readOnly=false.
+function DepartmentOpinionsSection({ ev, readOnly }: { ev: PeDetailBundle; readOnly: boolean }) {
+  const KINDS: { kind: number; label: string }[] = [
+    { kind: PeDepartmentKind.PheDuyet, label: PeDepartmentKindLabel[PeDepartmentKind.PheDuyet] },
+    { kind: PeDepartmentKind.Ccm, label: PeDepartmentKindLabel[PeDepartmentKind.Ccm] },
+    { kind: PeDepartmentKind.MuaHang, label: PeDepartmentKindLabel[PeDepartmentKind.MuaHang] },
+    { kind: PeDepartmentKind.SmPm, label: PeDepartmentKindLabel[PeDepartmentKind.SmPm] },
+  ]
+  return (
+    <div className="grid grid-cols-1 gap-3 md:grid-cols-2">
+      {KINDS.map(k => {
+        const existing = ev.departmentOpinions.find(o => o.kind === k.kind) ?? null
+        return (
+          <OpinionBox
+            key={k.kind}
+            evaluationId={ev.id}
+            kind={k.kind}
+            kindLabel={k.label}
+            existing={existing}
+            readOnly={readOnly}
+          />
+        )
+      })}
+    </div>
+  )
+}
+
+function OpinionBox({
+  evaluationId,
+  kind,
+  kindLabel,
+  existing,
+  readOnly,
+}: {
+  evaluationId: string
+  kind: number
+  kindLabel: string
+  existing: PeDepartmentOpinion | null
+  readOnly: boolean
+}) {
+  const qc = useQueryClient()
+  const [text, setText] = useState(existing?.opinion ?? '')
+  const isSigned = !!existing?.signedAt
+
+  const save = useMutation({
+    mutationFn: async (sign: boolean) =>
+      api.post(`/purchase-evaluations/${evaluationId}/opinions`, {
+        kind,
+        opinion: text || null,
+        sign,
+      }),
+    onSuccess: () => {
+      toast.success('Đã lưu ý kiến.')
+      qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] })
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <div className={cn(
+      'rounded-lg border bg-white p-3',
+      isSigned ? 'border-emerald-200' : 'border-slate-200',
+    )}>
+      <div className="mb-2 flex items-center justify-between">
+        <h4 className="text-[13px] font-semibold uppercase tracking-wide text-slate-700">{kindLabel}</h4>
+        {isSigned && (
+          <span className="inline-flex items-center gap-1 rounded-full bg-emerald-100 px-2 py-0.5 text-[10px] font-medium text-emerald-700">
+            <Check className="h-3 w-3" /> Đã ký
+          </span>
+        )}
+      </div>
+
+      {readOnly ? (
+        <>
+          <div className="min-h-[60px] whitespace-pre-wrap text-sm text-slate-800">
+            {existing?.opinion ?? <span className="italic text-slate-400">— chưa có ý kiến</span>}
+          </div>
+          {isSigned && (
+            <div className="mt-2 border-t border-slate-100 pt-1.5 text-[11px] text-slate-500">
+              Ký bởi <strong>{existing?.userName ?? '—'}</strong> · {new Date(existing!.signedAt!).toLocaleString('vi-VN')}
+            </div>
+          )}
+        </>
+      ) : (
+        <>
+          <textarea
+            rows={3}
+            value={text}
+            onChange={e => setText(e.target.value)}
+            placeholder="Nhập ý kiến…"
+            className="w-full resize-none rounded border border-slate-200 px-2 py-1.5 text-sm focus:border-brand-300 focus:outline-none focus:ring-1 focus:ring-brand-200"
+          />
+          <div className="mt-2 flex items-center justify-between gap-2">
+            <div className="text-[11px] text-slate-500">
+              {isSigned
+                ? <>Ký bởi <strong>{existing?.userName ?? '—'}</strong> · {new Date(existing!.signedAt!).toLocaleString('vi-VN')}</>
+                : 'Chưa ký'}
+            </div>
+            <div className="flex gap-1">
+              <Button
+                variant="ghost"
+                onClick={() => save.mutate(false)}
+                disabled={save.isPending}
+                className="text-xs"
+              >
+                Lưu text
+              </Button>
+              <Button
+                onClick={() => save.mutate(true)}
+                disabled={save.isPending}
+                className="text-xs"
+              >
+                {isSigned ? 'Cập nhật chữ ký' : 'Lưu & Ký'}
+              </Button>
+            </div>
+          </div>
+        </>
+      )}
+    </div>
+  )
+}
+
 // ===== Exports cho Panel 3 — Approvals history + Changelog =====
 
 export function PeApprovalsSection({ ev }: { ev: PeDetailBundle }) {

fe-admin/src/pages/system/PeWorkflowsPage.tsx

@@ -0,0 +1,499 @@
+// PE Workflow admin — mirror WorkflowsPage cho module Duyệt NCC. URL pattern
+// /system/pe-workflows/:typeCode (DuyetNcc | DuyetNccPhuongAn). Phase enum
+// khác Contract (1=DangSoanThao..7=DaDuyet, 99=TuChoi).
+import { useMemo, useState, type FormEvent } from 'react'
+import { useParams } from 'react-router-dom'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { GitBranch, Plus, Trash2, CheckCircle2, Info, History } from 'lucide-react'
+import { toast } from 'sonner'
+import { PageHeader } from '@/components/PageHeader'
+import { Button } from '@/components/ui/Button'
+import { Dialog } from '@/components/ui/Dialog'
+import { Input } from '@/components/ui/Input'
+import { Label } from '@/components/ui/Label'
+import { Select } from '@/components/ui/Select'
+import { Textarea } from '@/components/ui/Textarea'
+import { api } from '@/lib/api'
+import { getErrorMessage } from '@/lib/apiError'
+import { AVAILABLE_ROLES, RoleLabel } from '@/types/users'
+
+// ===== Types (mirror BE PeWorkflowAdminOverviewDto) =====
+
+type ApproverDto = { kind: number; assignmentValue: string; displayName: string | null }
+type StepDto = { id: string; order: number; phase: number; phaseLabel: string; name: string; slaDays: number | null; approvers: ApproverDto[] }
+type DefinitionDto = {
+  id: string
+  code: string
+  version: number
+  evaluationType: number
+  evaluationTypeLabel: string
+  name: string
+  description: string | null
+  isActive: boolean
+  activatedAt: string | null
+  createdAt: string
+  evaluationsUsingCount: number
+  steps: StepDto[]
+}
+type TypeSummaryDto = {
+  evaluationType: number
+  evaluationTypeLabel: string
+  active: DefinitionDto | null
+  history: DefinitionDto[]
+}
+
+// PE Phase 1..7 (state thường); 99=TuChoi không là step quy trình.
+const PHASE_OPTIONS: { value: number; label: string }[] = [
+  { value: 1, label: 'Đang soạn thảo' },
+  { value: 2, label: 'Chờ Purchasing' },
+  { value: 3, label: 'Chờ Dự án' },
+  { value: 4, label: 'Chờ CCM' },
+  { value: 5, label: 'Chờ CEO duyệt PA' },
+  { value: 6, label: 'Chờ CEO duyệt NCC' },
+  { value: 7, label: 'Đã duyệt' },
+]
+
+type EditStepApprover = { kind: 1 | 2; assignmentValue: string }
+type EditStep = { phase: number; name: string; slaDays: number | null; approvers: EditStepApprover[] }
+
+function copyFromDefinition(d: DefinitionDto): EditStep[] {
+  return d.steps.map(s => ({
+    phase: s.phase,
+    name: s.name,
+    slaDays: s.slaDays,
+    approvers: s.approvers.map(a => ({ kind: a.kind as 1 | 2, assignmentValue: a.assignmentValue })),
+  }))
+}
+
+// ===== Page =====
+
+// Map URL type code → int (mirror PeWf_<Code> menu key)
+const PE_TYPE_CODE_TO_INT: Record<string, number> = {
+  DuyetNcc: 1,
+  DuyetNccPhuongAn: 2,
+}
+
+export function PeWorkflowsPage() {
+  const qc = useQueryClient()
+  const { typeCode } = useParams<{ typeCode?: string }>()
+  const overview = useQuery({
+    queryKey: ['pe-workflow-overview'],
+    queryFn: async () => (await api.get<{ types: TypeSummaryDto[] }>('/pe-workflows')).data,
+  })
+
+  const selectedTypeInt = typeCode ? PE_TYPE_CODE_TO_INT[typeCode] : null
+  const currentType = selectedTypeInt
+    ? overview.data?.types.find(t => t.evaluationType === selectedTypeInt)
+    : null
+
+  return (
+    <div className="p-6">
+      <PageHeader
+        title={
+          <span className="flex items-center gap-2">
+            <GitBranch className="h-5 w-5" />
+            {currentType ? `Quy trình: ${currentType.evaluationTypeLabel}` : 'Quy trình duyệt NCC (PE)'}
+          </span>
+        }
+        description={
+          currentType
+            ? 'Tạo version mới → phiếu PE tương lai dùng. Phiếu đã tạo giữ version cũ (pinned lúc tạo).'
+            : 'Chọn loại Duyệt NCC từ menu bên trái để xem + chỉnh quy trình.'
+        }
+      />
+
+      {overview.isLoading && <div className="text-sm text-slate-500">Đang tải…</div>}
+
+      {overview.data && !currentType && (
+        <div className="grid grid-cols-1 gap-3 md:grid-cols-2">
+          {overview.data.types.map(t => (
+            <div key={t.evaluationType} className="rounded-xl border border-slate-200 bg-white p-4 shadow-sm">
+              <div className="flex items-center justify-between">
+                <h3 className="text-sm font-semibold text-slate-800">{t.evaluationTypeLabel}</h3>
+                {t.active && (
+                  <span className="rounded bg-brand-50 px-2 py-0.5 font-mono text-[10px] font-medium text-brand-700">
+                    {t.active.code} v{String(t.active.version).padStart(2, '0')}
+                  </span>
+                )}
+              </div>
+              <div className="mt-2 text-xs text-slate-500">
+                {t.active
+                  ? `${t.active.steps.length} bước · ${t.history.length} version${t.history.length > 1 ? 's' : ''}`
+                  : 'Chưa có quy trình'}
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+
+      {currentType && <TypePanel type={currentType} onSaved={() => qc.invalidateQueries({ queryKey: ['pe-workflow-overview'] })} />}
+    </div>
+  )
+}
+
+// ===== Per-type panel =====
+
+function TypePanel({ type, onSaved }: { type: TypeSummaryDto; onSaved: () => void }) {
+  const [designerOpen, setDesignerOpen] = useState(false)
+  const [cloneFrom, setCloneFrom] = useState<DefinitionDto | null>(null)
+
+  return (
+    <div className="space-y-4">
+      {type.active ? (
+        <DefinitionCard def={type.active} isActive onClone={d => { setCloneFrom(d); setDesignerOpen(true) }} />
+      ) : (
+        <div className="rounded-xl border border-dashed border-slate-300 p-8 text-center text-sm text-slate-500">
+          Chưa có quy trình cho loại này. Tạo version đầu tiên bên dưới.
+        </div>
+      )}
+
+      <div className="flex items-center justify-between">
+        <h3 className="text-sm font-semibold text-slate-700">Lịch sử versions</h3>
+        <Button onClick={() => { setCloneFrom(type.active); setDesignerOpen(true) }}>
+          <Plus className="h-4 w-4" />
+          Tạo quy trình mới
+        </Button>
+      </div>
+
+      {type.history.filter(d => !d.isActive).length === 0 && (
+        <div className="rounded-md border border-slate-200 bg-slate-50 p-4 text-xs text-slate-500">
+          Chưa có version cũ. Khi tạo version mới, version hiện tại tự động archive.
+        </div>
+      )}
+
+      <div className="space-y-2">
+        {type.history
+          .filter(d => !d.isActive)
+          .map(d => (
+            <DefinitionCard key={d.id} def={d} isActive={false} onClone={dd => { setCloneFrom(dd); setDesignerOpen(true) }} />
+          ))}
+      </div>
+
+      {designerOpen && (
+        <PeWorkflowDesigner
+          evaluationType={type.evaluationType}
+          evaluationTypeLabel={type.evaluationTypeLabel}
+          cloneFrom={cloneFrom}
+          onClose={() => { setDesignerOpen(false); setCloneFrom(null) }}
+          onSaved={() => { setDesignerOpen(false); setCloneFrom(null); onSaved() }}
+        />
+      )}
+    </div>
+  )
+}
+
+// ===== Definition card (read-only view) =====
+
+function DefinitionCard({ def, isActive, onClone }: { def: DefinitionDto; isActive: boolean; onClone: (d: DefinitionDto) => void }) {
+  return (
+    <div className={`rounded-xl border bg-white p-5 shadow-sm ${isActive ? 'border-brand-200' : 'border-slate-200'}`}>
+      <div className="flex items-start justify-between gap-4">
+        <div className="min-w-0 flex-1">
+          <div className="flex items-center gap-2">
+            <h3 className="text-[15px] font-semibold text-slate-900">{def.name}</h3>
+            <span className="rounded bg-slate-100 px-2 py-0.5 font-mono text-[11px] text-slate-600">
+              {def.code} v{String(def.version).padStart(2, '0')}
+            </span>
+            {isActive ? (
+              <span className="inline-flex items-center gap-1 rounded-full bg-emerald-100 px-2 py-0.5 text-[10px] font-medium text-emerald-700">
+                <CheckCircle2 className="h-3 w-3" />
+                Đang áp dụng
+              </span>
+            ) : (
+              <span className="inline-flex items-center gap-1 rounded-full bg-slate-100 px-2 py-0.5 text-[10px] font-medium text-slate-600">
+                <History className="h-3 w-3" />
+                Archived · {def.evaluationsUsingCount} phiếu còn chạy
+              </span>
+            )}
+          </div>
+          {def.description && <p className="mt-1 text-xs leading-relaxed text-slate-500">{def.description}</p>}
+
+          <ol className="mt-3 space-y-2">
+            {def.steps.map(s => (
+              <li key={s.id} className="flex items-start gap-3 rounded-lg border border-slate-100 bg-slate-50/30 p-2.5">
+                <div className="flex h-7 w-7 shrink-0 items-center justify-center rounded-full bg-brand-600 text-[11px] font-bold text-white">
+                  {s.order}
+                </div>
+                <div className="min-w-0 flex-1">
+                  <div className="flex items-center gap-2 text-sm">
+                    <span className="font-medium text-slate-800">{s.name}</span>
+                    <span className="text-[11px] text-slate-400">({s.phaseLabel})</span>
+                    {s.slaDays != null && (
+                      <span className="rounded bg-amber-100 px-1.5 py-0.5 text-[10px] font-medium text-amber-700">
+                        SLA {s.slaDays}d
+                      </span>
+                    )}
+                  </div>
+                  <div className="mt-1 flex flex-wrap gap-1">
+                    {s.approvers.length === 0 && (
+                      <span className="text-[11px] italic text-slate-400">Chưa có người duyệt</span>
+                    )}
+                    {s.approvers.map((a, i) => (
+                      <span
+                        key={i}
+                        className={`rounded-full px-2 py-0.5 text-[10px] font-medium ${
+                          a.kind === 1 ? 'bg-brand-50 text-brand-700' : 'bg-violet-50 text-violet-700'
+                        }`}
+                      >
+                        {a.kind === 1 ? 'Role' : 'User'}: {a.displayName ?? a.assignmentValue}
+                      </span>
+                    ))}
+                  </div>
+                </div>
+              </li>
+            ))}
+          </ol>
+        </div>
+        <Button variant="outline" size="sm" onClick={() => onClone(def)}>
+          <Plus className="h-3.5 w-3.5" />
+          Tạo từ bản này
+        </Button>
+      </div>
+    </div>
+  )
+}
+
+// ===== Designer dialog =====
+
+function PeWorkflowDesigner({
+  evaluationType,
+  evaluationTypeLabel,
+  cloneFrom,
+  onClose,
+  onSaved,
+}: {
+  evaluationType: number
+  evaluationTypeLabel: string
+  cloneFrom: DefinitionDto | null
+  onClose: () => void
+  onSaved: () => void
+}) {
+  const initialSteps: EditStep[] = useMemo(
+    () =>
+      cloneFrom
+        ? copyFromDefinition(cloneFrom)
+        : [{ phase: 1, name: 'Soạn thảo', slaDays: 3, approvers: [] }],
+    [cloneFrom],
+  )
+
+  const defaultCode = evaluationType === 1 ? 'QT-DN-A' : 'QT-DN-B'
+  const [code, setCode] = useState(cloneFrom?.code ?? defaultCode)
+  const [name, setName] = useState(cloneFrom ? `${cloneFrom.name} (clone)` : `Quy trình ${evaluationTypeLabel}`)
+  const [description, setDescription] = useState(cloneFrom?.description ?? '')
+  const [steps, setSteps] = useState<EditStep[]>(initialSteps)
+
+  const usersList = useQuery({
+    queryKey: ['users-for-approver'],
+    queryFn: async () =>
+      (await api.get<{ items: { id: string; fullName: string; email: string }[] }>('/users', { params: { page: 1, pageSize: 200 } })).data.items,
+  })
+
+  const save = useMutation({
+    mutationFn: async () => {
+      await api.post('/pe-workflows', {
+        evaluationType,
+        code,
+        name,
+        description: description || null,
+        steps: steps.map((s, i) => ({
+          order: i + 1,
+          phase: s.phase,
+          name: s.name,
+          slaDays: s.slaDays,
+          approvers: s.approvers,
+        })),
+      })
+    },
+    onSuccess: () => {
+      toast.success('Đã lưu quy trình mới. Version cũ đã archive.')
+      onSaved()
+    },
+    onError: err => toast.error(getErrorMessage(err)),
+  })
+
+  function submit(e: FormEvent) {
+    e.preventDefault()
+    if (steps.length === 0) {
+      toast.error('Phải có ít nhất 1 bước')
+      return
+    }
+    save.mutate()
+  }
+
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title={`Tạo quy trình mới — ${evaluationTypeLabel}`}
+      size="lg"
+      footer={
+        <>
+          <Button variant="outline" onClick={onClose}>Hủy</Button>
+          <Button onClick={submit} disabled={save.isPending} form="pe-wf-form">
+            {save.isPending ? 'Đang lưu…' : 'Lưu + kích hoạt'}
+          </Button>
+        </>
+      }
+    >
+      <form id="pe-wf-form" onSubmit={submit} className="space-y-4">
+        <div className="grid grid-cols-2 gap-3">
+          <div className="space-y-1.5">
+            <Label>Mã quy trình *</Label>
+            <Input value={code} onChange={e => setCode(e.target.value)} required className="font-mono" />
+            <div className="text-[11px] text-slate-400">Ví dụ QT-DN-A, QT-DN-B. Version auto-tăng mỗi lần lưu.</div>
+          </div>
+          <div className="space-y-1.5">
+            <Label>Tên hiển thị *</Label>
+            <Input value={name} onChange={e => setName(e.target.value)} required />
+          </div>
+          <div className="col-span-2 space-y-1.5">
+            <Label>Mô tả</Label>
+            <Textarea rows={2} value={description} onChange={e => setDescription(e.target.value)} />
+          </div>
+        </div>
+
+        <div className="space-y-2 rounded-lg border border-slate-200 p-3">
+          <div className="flex items-center justify-between">
+            <Label>Các bước ({steps.length})</Label>
+            <Button
+              type="button"
+              size="sm"
+              variant="outline"
+              onClick={() => setSteps([...steps, { phase: 2, name: '', slaDays: 3, approvers: [] }])}
+            >
+              <Plus className="h-3.5 w-3.5" />
+              Thêm bước
+            </Button>
+          </div>
+
+          {steps.map((s, idx) => (
+            <div key={idx} className="rounded-md border border-slate-200 bg-slate-50/40 p-3">
+              <div className="flex items-start gap-2">
+                <div className="flex h-7 w-7 shrink-0 items-center justify-center rounded-full bg-brand-600 text-[11px] font-bold text-white">
+                  {idx + 1}
+                </div>
+                <div className="grid flex-1 grid-cols-3 gap-2">
+                  <div>
+                    <Label className="text-[11px]">Phase</Label>
+                    <Select
+                      value={s.phase}
+                      onChange={e => setSteps(steps.map((x, i) => (i === idx ? { ...x, phase: Number(e.target.value) } : x)))}
+                    >
+                      {PHASE_OPTIONS.map(p => (
+                        <option key={p.value} value={p.value}>{p.label}</option>
+                      ))}
+                    </Select>
+                  </div>
+                  <div>
+                    <Label className="text-[11px]">Tên bước</Label>
+                    <Input value={s.name} onChange={e => setSteps(steps.map((x, i) => (i === idx ? { ...x, name: e.target.value } : x)))} />
+                  </div>
+                  <div>
+                    <Label className="text-[11px]">SLA (ngày)</Label>
+                    <Input
+                      type="number"
+                      min={0}
+                      value={s.slaDays ?? ''}
+                      onChange={e =>
+                        setSteps(steps.map((x, i) => (i === idx ? { ...x, slaDays: e.target.value ? Number(e.target.value) : null } : x)))
+                      }
+                    />
+                  </div>
+                </div>
+                <button
+                  type="button"
+                  onClick={() => setSteps(steps.filter((_, i) => i !== idx))}
+                  className="flex h-7 w-7 items-center justify-center rounded text-slate-400 hover:bg-red-50 hover:text-red-600"
+                  title="Xóa bước"
+                >
+                  <Trash2 className="h-3.5 w-3.5" />
+                </button>
+              </div>
+
+              <div className="mt-2 border-t border-slate-200 pt-2">
+                <div className="mb-1 flex items-center justify-between">
+                  <Label className="text-[11px]">Người duyệt</Label>
+                  <div className="flex gap-1">
+                    <button
+                      type="button"
+                      onClick={() => setSteps(steps.map((x, i) => (i === idx ? { ...x, approvers: [...x.approvers, { kind: 1, assignmentValue: AVAILABLE_ROLES[1] }] } : x)))}
+                      className="rounded bg-brand-50 px-2 py-0.5 text-[11px] font-medium text-brand-700 hover:bg-brand-100"
+                    >
+                      + Role
+                    </button>
+                    <button
+                      type="button"
+                      onClick={() => setSteps(steps.map((x, i) => (i === idx ? { ...x, approvers: [...x.approvers, { kind: 2, assignmentValue: usersList.data?.[0]?.id ?? '' }] } : x)))}
+                      className="rounded bg-violet-50 px-2 py-0.5 text-[11px] font-medium text-violet-700 hover:bg-violet-100"
+                    >
+                      + User
+                    </button>
+                  </div>
+                </div>
+                {s.approvers.length === 0 && (
+                  <div className="rounded bg-slate-100 px-2 py-1.5 text-[11px] italic text-slate-500">
+                    Chưa có người duyệt — tối thiểu nên có 1 Role hoặc 1 User.
+                  </div>
+                )}
+                <div className="space-y-1">
+                  {s.approvers.map((a, ai) => (
+                    <div key={ai} className="flex items-center gap-1">
+                      {a.kind === 1 ? (
+                        <Select
+                          value={a.assignmentValue}
+                          onChange={e =>
+                            setSteps(steps.map((x, i) =>
+                              i === idx ? { ...x, approvers: x.approvers.map((y, j) => (j === ai ? { ...y, assignmentValue: e.target.value } : y)) } : x,
+                            ))
+                          }
+                          className="h-7 flex-1 text-xs"
+                        >
+                          {AVAILABLE_ROLES.map(r => (
+                            <option key={r} value={r}>Role: {RoleLabel[r] ?? r}</option>
+                          ))}
+                        </Select>
+                      ) : (
+                        <Select
+                          value={a.assignmentValue}
+                          onChange={e =>
+                            setSteps(steps.map((x, i) =>
+                              i === idx ? { ...x, approvers: x.approvers.map((y, j) => (j === ai ? { ...y, assignmentValue: e.target.value } : y)) } : x,
+                            ))
+                          }
+                          className="h-7 flex-1 text-xs"
+                        >
+                          {usersList.data?.map(u => (
+                            <option key={u.id} value={u.id}>User: {u.fullName} ({u.email})</option>
+                          ))}
+                        </Select>
+                      )}
+                      <button
+                        type="button"
+                        onClick={() =>
+                          setSteps(steps.map((x, i) =>
+                            i === idx ? { ...x, approvers: x.approvers.filter((_, j) => j !== ai) } : x,
+                          ))
+                        }
+                        className="flex h-6 w-6 items-center justify-center rounded text-slate-400 hover:bg-red-50 hover:text-red-600"
+                      >
+                        <Trash2 className="h-3 w-3" />
+                      </button>
+                    </div>
+                  ))}
+                </div>
+              </div>
+            </div>
+          ))}
+        </div>
+
+        <div className="flex items-start gap-2 rounded-md border border-amber-200 bg-amber-50 px-3 py-2 text-xs text-amber-800">
+          <Info className="mt-0.5 h-3.5 w-3.5 shrink-0" />
+          <div>
+            Khi lưu: version mới tự động tăng từ <code className="font-mono">{code}</code>, thành version đang áp dụng.
+            Phiếu hiện tại vẫn giữ version cũ (được pin tại thời điểm tạo), chỉ phiếu MỚI đi theo version này.
+          </div>
+        </div>
+      </form>
+    </Dialog>
+  )
+}

fe-admin/src/types/purchaseEvaluation.ts

@@ -175,6 +175,32 @@ export type BudgetSummary = {
   tongNganSach: number
 }
 
+// Mirror BE PeDepartmentKind enum
+export const PeDepartmentKind = {
+  PheDuyet: 1,
+  Ccm: 2,
+  MuaHang: 3,
+  SmPm: 4,
+} as const
+export type PeDepartmentKind = typeof PeDepartmentKind[keyof typeof PeDepartmentKind]
+
+export const PeDepartmentKindLabel: Record<number, string> = {
+  1: 'Phê duyệt',
+  2: 'P.CCM',
+  3: 'P.Mua hàng',
+  4: 'SM-PM',
+}
+
+export type PeDepartmentOpinion = {
+  id: string
+  kind: number
+  kindLabel: string
+  opinion: string | null
+  signedAt: string | null
+  userId: string | null
+  userName: string | null
+}
+
 export type PeDetailBundle = {
   id: string
   maPhieu: string | null
@@ -202,5 +228,6 @@ export type PeDetailBundle = {
   details: PeDetailRow[]
   approvals: PeApproval[]
   attachments: PeAttachment[]
+  departmentOpinions: PeDepartmentOpinion[]
   workflow: PeWorkflowSummary
 }

fe-user/src/components/pe/PeDetailTabs.tsx

@@ -18,12 +18,15 @@ import { cn } from '@/lib/cn'
 import {
   PeAttachmentPurpose,
   PeAttachmentPurposeLabel,
+  PeDepartmentKind,
+  PeDepartmentKindLabel,
   PurchaseEvaluationPhase,
   PurchaseEvaluationPhaseColor,
   PurchaseEvaluationPhaseLabel,
   PurchaseEvaluationTypeLabel,
   type PeAttachment,
   type PeChangelog,
+  type PeDepartmentOpinion,
   type PeDetailBundle,
   type PeDetailRow,
   type PeQuote,
@@ -108,6 +111,9 @@ export function PeDetailTabs({
         <Section title={`4. Hạng mục + Báo giá (${evaluation.details.length})`}>
           <ItemsTab ev={evaluation} readOnly={readOnly} />
         </Section>
+        <Section title="5. Ý kiến 4 phòng ban (sign-off)">
+          <DepartmentOpinionsSection ev={evaluation} readOnly={readOnly} />
+        </Section>
       </div>
     </div>
   )
@@ -122,6 +128,131 @@ function Section({ title, children }: { title: string; children: React.ReactNode
   )
 }
 
+// ===== Section 5 — Ý kiến 4 phòng ban =====
+// Render 2x2 grid 4 box (Phê duyệt / CCM / MuaHàng / SM-PM). Mỗi box hiển
+// thị Opinion text + chữ ký (UserName + SignedAt) nếu đã ký, hoặc form nhập
+// + 2 button "Lưu" + "Lưu & Ký" khi chưa ký / readOnly=false.
+function DepartmentOpinionsSection({ ev, readOnly }: { ev: PeDetailBundle; readOnly: boolean }) {
+  const KINDS: { kind: number; label: string }[] = [
+    { kind: PeDepartmentKind.PheDuyet, label: PeDepartmentKindLabel[PeDepartmentKind.PheDuyet] },
+    { kind: PeDepartmentKind.Ccm, label: PeDepartmentKindLabel[PeDepartmentKind.Ccm] },
+    { kind: PeDepartmentKind.MuaHang, label: PeDepartmentKindLabel[PeDepartmentKind.MuaHang] },
+    { kind: PeDepartmentKind.SmPm, label: PeDepartmentKindLabel[PeDepartmentKind.SmPm] },
+  ]
+  return (
+    <div className="grid grid-cols-1 gap-3 md:grid-cols-2">
+      {KINDS.map(k => {
+        const existing = ev.departmentOpinions.find(o => o.kind === k.kind) ?? null
+        return (
+          <OpinionBox
+            key={k.kind}
+            evaluationId={ev.id}
+            kind={k.kind}
+            kindLabel={k.label}
+            existing={existing}
+            readOnly={readOnly}
+          />
+        )
+      })}
+    </div>
+  )
+}
+
+function OpinionBox({
+  evaluationId,
+  kind,
+  kindLabel,
+  existing,
+  readOnly,
+}: {
+  evaluationId: string
+  kind: number
+  kindLabel: string
+  existing: PeDepartmentOpinion | null
+  readOnly: boolean
+}) {
+  const qc = useQueryClient()
+  const [text, setText] = useState(existing?.opinion ?? '')
+  const isSigned = !!existing?.signedAt
+
+  const save = useMutation({
+    mutationFn: async (sign: boolean) =>
+      api.post(`/purchase-evaluations/${evaluationId}/opinions`, {
+        kind,
+        opinion: text || null,
+        sign,
+      }),
+    onSuccess: () => {
+      toast.success('Đã lưu ý kiến.')
+      qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] })
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <div className={cn(
+      'rounded-lg border bg-white p-3',
+      isSigned ? 'border-emerald-200' : 'border-slate-200',
+    )}>
+      <div className="mb-2 flex items-center justify-between">
+        <h4 className="text-[13px] font-semibold uppercase tracking-wide text-slate-700">{kindLabel}</h4>
+        {isSigned && (
+          <span className="inline-flex items-center gap-1 rounded-full bg-emerald-100 px-2 py-0.5 text-[10px] font-medium text-emerald-700">
+            <Check className="h-3 w-3" /> Đã ký
+          </span>
+        )}
+      </div>
+
+      {readOnly ? (
+        <>
+          <div className="min-h-[60px] whitespace-pre-wrap text-sm text-slate-800">
+            {existing?.opinion ?? <span className="italic text-slate-400">— chưa có ý kiến</span>}
+          </div>
+          {isSigned && (
+            <div className="mt-2 border-t border-slate-100 pt-1.5 text-[11px] text-slate-500">
+              Ký bởi <strong>{existing?.userName ?? '—'}</strong> · {new Date(existing!.signedAt!).toLocaleString('vi-VN')}
+            </div>
+          )}
+        </>
+      ) : (
+        <>
+          <textarea
+            rows={3}
+            value={text}
+            onChange={e => setText(e.target.value)}
+            placeholder="Nhập ý kiến…"
+            className="w-full resize-none rounded border border-slate-200 px-2 py-1.5 text-sm focus:border-brand-300 focus:outline-none focus:ring-1 focus:ring-brand-200"
+          />
+          <div className="mt-2 flex items-center justify-between gap-2">
+            <div className="text-[11px] text-slate-500">
+              {isSigned
+                ? <>Ký bởi <strong>{existing?.userName ?? '—'}</strong> · {new Date(existing!.signedAt!).toLocaleString('vi-VN')}</>
+                : 'Chưa ký'}
+            </div>
+            <div className="flex gap-1">
+              <Button
+                variant="ghost"
+                onClick={() => save.mutate(false)}
+                disabled={save.isPending}
+                className="text-xs"
+              >
+                Lưu text
+              </Button>
+              <Button
+                onClick={() => save.mutate(true)}
+                disabled={save.isPending}
+                className="text-xs"
+              >
+                {isSigned ? 'Cập nhật chữ ký' : 'Lưu & Ký'}
+              </Button>
+            </div>
+          </div>
+        </>
+      )}
+    </div>
+  )
+}
+
 // ===== Exports cho Panel 3 — Approvals history + Changelog =====
 
 export function PeApprovalsSection({ ev }: { ev: PeDetailBundle }) {

fe-user/src/types/purchaseEvaluation.ts

@@ -175,6 +175,32 @@ export type BudgetSummary = {
   tongNganSach: number
 }
 
+// Mirror BE PeDepartmentKind enum
+export const PeDepartmentKind = {
+  PheDuyet: 1,
+  Ccm: 2,
+  MuaHang: 3,
+  SmPm: 4,
+} as const
+export type PeDepartmentKind = typeof PeDepartmentKind[keyof typeof PeDepartmentKind]
+
+export const PeDepartmentKindLabel: Record<number, string> = {
+  1: 'Phê duyệt',
+  2: 'P.CCM',
+  3: 'P.Mua hàng',
+  4: 'SM-PM',
+}
+
+export type PeDepartmentOpinion = {
+  id: string
+  kind: number
+  kindLabel: string
+  opinion: string | null
+  signedAt: string | null
+  userId: string | null
+  userName: string | null
+}
+
 export type PeDetailBundle = {
   id: string
   maPhieu: string | null
@@ -202,5 +228,6 @@ export type PeDetailBundle = {
   details: PeDetailRow[]
   approvals: PeApproval[]
   attachments: PeAttachment[]
+  departmentOpinions: PeDepartmentOpinion[]
   workflow: PeWorkflowSummary
 }

src/Backend/SolutionErp.Api/Controllers/PeWorkflowsController.cs

@@ -0,0 +1,27 @@
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using SolutionErp.Application.PurchaseEvaluations;
+
+namespace SolutionErp.Api.Controllers;
+
+// Versioned workflow admin cho module Duyệt NCC (PE). Reuse policy
+// "Workflows.Read" + "Workflows.Create" giống Contract — admin có quyền
+// quản lý cả 2 nhóm workflow (HĐ + PE).
+[ApiController]
+[Route("api/pe-workflows")]
+[Authorize(Policy = "Workflows.Read")]
+public class PeWorkflowsController(IMediator mediator) : ControllerBase
+{
+    [HttpGet]
+    public async Task<ActionResult<PeWorkflowAdminOverviewDto>> Overview(CancellationToken ct)
+        => Ok(await mediator.Send(new GetPeWorkflowAdminOverviewQuery(), ct));
+
+    [HttpPost]
+    [Authorize(Policy = "Workflows.Create")]
+    public async Task<ActionResult<object>> Create([FromBody] CreatePeWorkflowDefinitionCommand cmd, CancellationToken ct)
+    {
+        var id = await mediator.Send(cmd, ct);
+        return Ok(new { id });
+    }
+}

src/Backend/SolutionErp.Api/Controllers/PurchaseEvaluationsController.cs

@@ -201,8 +201,29 @@ public class PurchaseEvaluationsController(IMediator mediator) : ControllerBase
             id, body.ContractType, body.TenHopDong, body.BypassProcurementAndCCM), ct);
         return Ok(new { contractId });
     }
+
+    // ========== Ý kiến 4 phòng ban ==========
+
+    // Upsert opinion (Add nếu chưa có, Update text + optional sign).
+    [HttpPost("{id:guid}/opinions")]
+    public async Task<ActionResult<object>> UpsertOpinion(
+        Guid id, [FromBody] OpinionBody body, CancellationToken ct)
+    {
+        var resultId = await mediator.Send(new UpsertPeDepartmentOpinionCommand(
+            id, body.Kind, body.Opinion, body.Sign), ct);
+        return Ok(new { id = resultId });
+    }
+
+    [HttpDelete("{id:guid}/opinions/{kind}")]
+    public async Task<IActionResult> DeleteOpinion(Guid id, PeDepartmentKind kind, CancellationToken ct)
+    {
+        await mediator.Send(new DeletePeDepartmentOpinionCommand(id, kind), ct);
+        return NoContent();
+    }
 }
 
+public record OpinionBody(PeDepartmentKind Kind, string? Opinion, bool Sign);
+
 public record CreateContractFromEvaluationBody(
     Domain.Contracts.ContractType ContractType,
     string? TenHopDong,

src/Backend/SolutionErp.Application/Common/Interfaces/IApplicationDbContext.cs

@@ -58,6 +58,7 @@ public interface IApplicationDbContext
     DbSet<PurchaseEvaluationWorkflowStep> PurchaseEvaluationWorkflowSteps { get; }
     DbSet<PurchaseEvaluationWorkflowStepApprover> PurchaseEvaluationWorkflowStepApprovers { get; }
     DbSet<PurchaseEvaluationCodeSequence> PurchaseEvaluationCodeSequences { get; }
+    DbSet<PurchaseEvaluationDepartmentOpinion> PurchaseEvaluationDepartmentOpinions { get; }
 
     // Module Ngân sách (Phase 7)
     DbSet<Budget> Budgets { get; }

src/Backend/SolutionErp.Application/PurchaseEvaluations/Dtos/PurchaseEvaluationDtos.cs

@@ -95,6 +95,15 @@ public record PurchaseEvaluationAttachmentDto(
     string? Note,
     DateTime CreatedAt);
 
+public record PurchaseEvaluationDepartmentOpinionDto(
+    Guid Id,
+    PeDepartmentKind Kind,
+    string KindLabel,
+    string? Opinion,
+    DateTime? SignedAt,
+    Guid? UserId,
+    string? UserName);
+
 public record PurchaseEvaluationDetailBundleDto(
     Guid Id,
     string? MaPhieu,
@@ -122,4 +131,5 @@ public record PurchaseEvaluationDetailBundleDto(
     List<PurchaseEvaluationDetailDto> Details,
     List<PurchaseEvaluationApprovalDto> Approvals,
     List<PurchaseEvaluationAttachmentDto> Attachments,
+    List<PurchaseEvaluationDepartmentOpinionDto> DepartmentOpinions,
     PurchaseEvaluationWorkflowSummaryDto Workflow);

src/Backend/SolutionErp.Application/PurchaseEvaluations/PeDepartmentOpinionFeatures.cs

@@ -0,0 +1,152 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.EntityFrameworkCore;
+using SolutionErp.Application.Common.Exceptions;
+using SolutionErp.Application.Common.Interfaces;
+using SolutionErp.Domain.Contracts;   // ChangelogAction
+using SolutionErp.Domain.Identity;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations;
+
+// Ý kiến 4 phòng ban (Phê duyệt / CCM / MuaHàng / SM-PM) trên PHIẾU TRÌNH KÝ.
+// Upsert pattern — UPDATE in-place khi user đổi ý (không version), audit qua
+// PurchaseEvaluationChangelog. UNIQUE index (PEId, Kind) bảo vệ tối đa 1 row
+// mỗi loại phòng ban per phiếu.
+
+// ========== UPSERT (Add nếu chưa có, Update nếu rồi) ==========
+
+public record UpsertPeDepartmentOpinionCommand(
+    Guid PurchaseEvaluationId,
+    PeDepartmentKind Kind,
+    string? Opinion,
+    bool Sign) : IRequest<Guid>;
+// Sign=true → set SignedAt + UserId hiện tại (đóng dấu xác nhận).
+// Sign=false → chỉ lưu text Opinion (chưa ký).
+
+public class UpsertPeDepartmentOpinionCommandValidator : AbstractValidator<UpsertPeDepartmentOpinionCommand>
+{
+    public UpsertPeDepartmentOpinionCommandValidator()
+    {
+        RuleFor(x => x.PurchaseEvaluationId).NotEmpty();
+        RuleFor(x => x.Kind).IsInEnum();
+        RuleFor(x => x.Opinion).MaximumLength(2000);
+    }
+}
+
+public class UpsertPeDepartmentOpinionCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser,
+    UserManager<User> userManager) : IRequestHandler<UpsertPeDepartmentOpinionCommand, Guid>
+{
+    public async Task<Guid> Handle(UpsertPeDepartmentOpinionCommand request, CancellationToken ct)
+    {
+        if (!currentUser.IsAuthenticated || currentUser.UserId is null)
+            throw new UnauthorizedException();
+
+        var pe = await db.PurchaseEvaluations.FirstOrDefaultAsync(p => p.Id == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.PurchaseEvaluationId);
+
+        var existing = await db.PurchaseEvaluationDepartmentOpinions
+            .FirstOrDefaultAsync(o => o.PurchaseEvaluationId == pe.Id && o.Kind == request.Kind, ct);
+
+        string? actorName = null;
+        if (request.Sign)
+        {
+            var u = await userManager.FindByIdAsync(currentUser.UserId.Value.ToString());
+            actorName = u?.FullName ?? u?.Email;
+        }
+
+        Guid resultId;
+        ChangelogAction action;
+        if (existing == null)
+        {
+            var entity = new PurchaseEvaluationDepartmentOpinion
+            {
+                PurchaseEvaluationId = pe.Id,
+                Kind = request.Kind,
+                Opinion = request.Opinion,
+                SignedAt = request.Sign ? DateTime.UtcNow : null,
+                UserId = request.Sign ? currentUser.UserId : null,
+                UserName = request.Sign ? actorName : null,
+            };
+            db.PurchaseEvaluationDepartmentOpinions.Add(entity);
+            resultId = entity.Id;
+            action = ChangelogAction.Insert;
+        }
+        else
+        {
+            existing.Opinion = request.Opinion;
+            if (request.Sign)
+            {
+                existing.SignedAt = DateTime.UtcNow;
+                existing.UserId = currentUser.UserId;
+                existing.UserName = actorName;
+            }
+            // Sign=false giữ nguyên SignedAt/UserId cũ (user đã ký rồi vẫn giữ chữ ký).
+            resultId = existing.Id;
+            action = ChangelogAction.Update;
+        }
+
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = pe.Id,
+            EntityType = PurchaseEvaluationEntityType.Header,   // không có entity type riêng cho opinion
+            EntityId = resultId,
+            Action = action,
+            PhaseAtChange = pe.Phase,
+            UserId = currentUser.UserId,
+            UserName = actorName,
+            Summary = request.Sign
+                ? $"Ý kiến {KindLabel(request.Kind)} — đã ký"
+                : $"Ý kiến {KindLabel(request.Kind)} — cập nhật text",
+        });
+
+        await db.SaveChangesAsync(ct);
+        return resultId;
+    }
+
+    private static string KindLabel(PeDepartmentKind k) => k switch
+    {
+        PeDepartmentKind.PheDuyet => "Phê duyệt",
+        PeDepartmentKind.Ccm => "P.CCM",
+        PeDepartmentKind.MuaHang => "P.Mua hàng",
+        PeDepartmentKind.SmPm => "SM-PM",
+        _ => k.ToString(),
+    };
+}
+
+// ========== DELETE (rare — admin override) ==========
+
+public record DeletePeDepartmentOpinionCommand(Guid PurchaseEvaluationId, PeDepartmentKind Kind) : IRequest;
+
+public class DeletePeDepartmentOpinionCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser) : IRequestHandler<DeletePeDepartmentOpinionCommand>
+{
+    public async Task Handle(DeletePeDepartmentOpinionCommand request, CancellationToken ct)
+    {
+        var entity = await db.PurchaseEvaluationDepartmentOpinions
+            .FirstOrDefaultAsync(o => o.PurchaseEvaluationId == request.PurchaseEvaluationId && o.Kind == request.Kind, ct)
+            ?? throw new NotFoundException("PEDepartmentOpinion", request.Kind);
+
+        var pe = await db.PurchaseEvaluations.FirstOrDefaultAsync(p => p.Id == request.PurchaseEvaluationId, ct);
+        db.PurchaseEvaluationDepartmentOpinions.Remove(entity);
+
+        if (pe is not null)
+        {
+            db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+            {
+                PurchaseEvaluationId = pe.Id,
+                EntityType = PurchaseEvaluationEntityType.Header,
+                Action = ChangelogAction.Delete,
+                PhaseAtChange = pe.Phase,
+                UserId = currentUser.UserId,
+                Summary = $"Xóa ý kiến phòng ban ({request.Kind})",
+            });
+        }
+
+        await db.SaveChangesAsync(ct);
+    }
+}

src/Backend/SolutionErp.Application/PurchaseEvaluations/PeWorkflowAdminFeatures.cs

@@ -0,0 +1,247 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.EntityFrameworkCore;
+using SolutionErp.Application.Common.Interfaces;
+using SolutionErp.Domain.Contracts;   // WorkflowApproverKind reuse
+using SolutionErp.Domain.Identity;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations;
+
+// Versioned workflow management cho module Duyệt NCC (PE) — mirror Contract
+// `WorkflowAdminFeatures` pattern. Phiếu PE đã pin WorkflowDefinitionId tại
+// thời điểm tạo → vẫn chạy version cũ kể cả khi admin activate version mới.
+
+public record PeWorkflowStepApproverDto(
+    int Kind,               // 1=Role, 2=User (reuse WorkflowApproverKind)
+    string AssignmentValue,
+    string? DisplayName);
+
+public record PeWorkflowStepDto(
+    Guid Id,
+    int Order,
+    int Phase,
+    string PhaseLabel,
+    string Name,
+    int? SlaDays,
+    List<PeWorkflowStepApproverDto> Approvers);
+
+public record PeWorkflowDefinitionDto(
+    Guid Id,
+    string Code,
+    int Version,
+    int EvaluationType,
+    string EvaluationTypeLabel,
+    string Name,
+    string? Description,
+    bool IsActive,
+    DateTime? ActivatedAt,
+    DateTime CreatedAt,
+    int EvaluationsUsingCount,
+    List<PeWorkflowStepDto> Steps);
+
+public record PeWorkflowTypeSummaryDto(
+    int EvaluationType,
+    string EvaluationTypeLabel,
+    PeWorkflowDefinitionDto? Active,
+    List<PeWorkflowDefinitionDto> History);
+
+public record PeWorkflowAdminOverviewDto(List<PeWorkflowTypeSummaryDto> Types);
+
+// ========== GET overview ==========
+
+public record GetPeWorkflowAdminOverviewQuery : IRequest<PeWorkflowAdminOverviewDto>;
+
+public class GetPeWorkflowAdminOverviewQueryHandler(
+    IApplicationDbContext db,
+    UserManager<User> userManager) : IRequestHandler<GetPeWorkflowAdminOverviewQuery, PeWorkflowAdminOverviewDto>
+{
+    private static readonly Dictionary<PurchaseEvaluationType, string> TypeLabels = new()
+    {
+        [PurchaseEvaluationType.DuyetNcc] = "Duyệt NCC",
+        [PurchaseEvaluationType.DuyetNccPhuongAn] = "Duyệt NCC + Giải pháp",
+    };
+
+    private static readonly Dictionary<PurchaseEvaluationPhase, string> PhaseLabels = new()
+    {
+        [PurchaseEvaluationPhase.DangSoanThao] = "Đang soạn thảo",
+        [PurchaseEvaluationPhase.ChoPurchasing] = "Chờ Purchasing",
+        [PurchaseEvaluationPhase.ChoDuAn] = "Chờ Dự án",
+        [PurchaseEvaluationPhase.ChoCCM] = "Chờ CCM",
+        [PurchaseEvaluationPhase.ChoCEODuyetPA] = "Chờ CEO duyệt PA",
+        [PurchaseEvaluationPhase.ChoCEODuyetNCC] = "Chờ CEO duyệt NCC",
+        [PurchaseEvaluationPhase.DaDuyet] = "Đã duyệt",
+    };
+
+    public async Task<PeWorkflowAdminOverviewDto> Handle(GetPeWorkflowAdminOverviewQuery request, CancellationToken ct)
+    {
+        var definitions = await db.PurchaseEvaluationWorkflowDefinitions.AsNoTracking()
+            .Include(d => d.Steps.OrderBy(s => s.Order))
+                .ThenInclude(s => s.Approvers)
+            .OrderByDescending(d => d.Version)
+            .ToListAsync(ct);
+
+        // Resolve user names cho User-kind approvers
+        var userIds = definitions
+            .SelectMany(d => d.Steps)
+            .SelectMany(s => s.Approvers)
+            .Where(a => a.Kind == WorkflowApproverKind.User && Guid.TryParse(a.AssignmentValue, out _))
+            .Select(a => Guid.Parse(a.AssignmentValue))
+            .Distinct()
+            .ToList();
+        var userNames = userIds.Count == 0
+            ? new Dictionary<Guid, string>()
+            : await userManager.Users.AsNoTracking()
+                .Where(u => userIds.Contains(u.Id))
+                .ToDictionaryAsync(u => u.Id, u => u.FullName, ct);
+
+        // Count phiếu PE per definition
+        var usageCounts = await db.PurchaseEvaluations.AsNoTracking()
+            .Where(p => p.WorkflowDefinitionId != null)
+            .GroupBy(p => p.WorkflowDefinitionId!.Value)
+            .Select(g => new { Id = g.Key, Count = g.Count() })
+            .ToDictionaryAsync(x => x.Id, x => x.Count, ct);
+
+        PeWorkflowDefinitionDto ToDto(PurchaseEvaluationWorkflowDefinition d) => new(
+            d.Id,
+            d.Code,
+            d.Version,
+            (int)d.EvaluationType,
+            TypeLabels.GetValueOrDefault(d.EvaluationType, d.EvaluationType.ToString()),
+            d.Name,
+            d.Description,
+            d.IsActive,
+            d.ActivatedAt,
+            d.CreatedAt,
+            usageCounts.GetValueOrDefault(d.Id, 0),
+            d.Steps.OrderBy(s => s.Order).Select(s => new PeWorkflowStepDto(
+                s.Id,
+                s.Order,
+                (int)s.Phase,
+                PhaseLabels.GetValueOrDefault(s.Phase, s.Phase.ToString()),
+                s.Name,
+                s.SlaDays,
+                s.Approvers.Select(a => new PeWorkflowStepApproverDto(
+                    (int)a.Kind,
+                    a.AssignmentValue,
+                    ResolveDisplay(a, userNames))).ToList()
+            )).ToList());
+
+        var types = Enum.GetValues<PurchaseEvaluationType>()
+            .Select(type =>
+            {
+                var versions = definitions.Where(d => d.EvaluationType == type).Select(ToDto).ToList();
+                return new PeWorkflowTypeSummaryDto(
+                    (int)type,
+                    TypeLabels.GetValueOrDefault(type, type.ToString()),
+                    versions.FirstOrDefault(v => v.IsActive),
+                    versions);
+            })
+            .ToList();
+
+        return new PeWorkflowAdminOverviewDto(types);
+    }
+
+    private static string? ResolveDisplay(PurchaseEvaluationWorkflowStepApprover a, Dictionary<Guid, string> userNames)
+    {
+        if (a.Kind == WorkflowApproverKind.Role) return a.AssignmentValue;
+        if (Guid.TryParse(a.AssignmentValue, out var uid) && userNames.TryGetValue(uid, out var n)) return n;
+        return a.AssignmentValue;
+    }
+}
+
+// ========== POST new version ==========
+
+public record CreatePeWorkflowStepApproverInput(int Kind, string AssignmentValue);
+
+public record CreatePeWorkflowStepInput(
+    int Order,
+    int Phase,
+    string Name,
+    int? SlaDays,
+    List<CreatePeWorkflowStepApproverInput> Approvers);
+
+public record CreatePeWorkflowDefinitionCommand(
+    PurchaseEvaluationType EvaluationType,
+    string Code,
+    string Name,
+    string? Description,
+    List<CreatePeWorkflowStepInput> Steps) : IRequest<Guid>;
+
+public class CreatePeWorkflowDefinitionCommandValidator : AbstractValidator<CreatePeWorkflowDefinitionCommand>
+{
+    public CreatePeWorkflowDefinitionCommandValidator()
+    {
+        RuleFor(x => x.EvaluationType).IsInEnum();
+        RuleFor(x => x.Code).NotEmpty().MaximumLength(100)
+            .Matches("^[A-Za-z0-9._-]+$")
+            .WithMessage("Code chỉ dùng chữ, số, và các ký tự . _ -");
+        RuleFor(x => x.Name).NotEmpty().MaximumLength(200);
+        RuleFor(x => x.Description).MaximumLength(1000);
+        RuleFor(x => x.Steps).NotEmpty()
+            .WithMessage("Quy trình phải có ít nhất 1 bước.");
+        RuleForEach(x => x.Steps).ChildRules(step =>
+        {
+            step.RuleFor(s => s.Order).GreaterThanOrEqualTo(1);
+            // Phase 1..7 thường, 99 = TuChoi (không nên dùng làm step)
+            step.RuleFor(s => s.Phase).Must(p => p >= 1 && p <= 7)
+                .WithMessage("Phase phải nằm trong 1..7 (state thường, không bao gồm Từ chối=99).");
+            step.RuleFor(s => s.Name).NotEmpty().MaximumLength(200);
+            step.RuleFor(s => s.SlaDays).GreaterThanOrEqualTo(0)
+                .When(s => s.SlaDays != null);
+            step.RuleForEach(s => s.Approvers).ChildRules(app =>
+            {
+                app.RuleFor(a => a.Kind).InclusiveBetween(1, 2);
+                app.RuleFor(a => a.AssignmentValue).NotEmpty().MaximumLength(100);
+            });
+        });
+    }
+}
+
+public class CreatePeWorkflowDefinitionCommandHandler(IApplicationDbContext db)
+    : IRequestHandler<CreatePeWorkflowDefinitionCommand, Guid>
+{
+    public async Task<Guid> Handle(CreatePeWorkflowDefinitionCommand request, CancellationToken ct)
+    {
+        var nextVersion = await db.PurchaseEvaluationWorkflowDefinitions
+            .Where(w => w.Code == request.Code)
+            .MaxAsync(w => (int?)w.Version, ct) ?? 0;
+        nextVersion++;
+
+        // Deactivate active version cho EvaluationType này (only ONE active per type)
+        var activeVersions = await db.PurchaseEvaluationWorkflowDefinitions
+            .Where(w => w.EvaluationType == request.EvaluationType && w.IsActive)
+            .ToListAsync(ct);
+        foreach (var old in activeVersions) old.IsActive = false;
+
+        var def = new PurchaseEvaluationWorkflowDefinition
+        {
+            Code = request.Code,
+            Version = nextVersion,
+            EvaluationType = request.EvaluationType,
+            Name = request.Name,
+            Description = request.Description,
+            IsActive = true,
+            ActivatedAt = DateTime.UtcNow,
+            Steps = request.Steps
+                .OrderBy(s => s.Order)
+                .Select(s => new PurchaseEvaluationWorkflowStep
+                {
+                    Order = s.Order,
+                    Phase = (PurchaseEvaluationPhase)s.Phase,
+                    Name = s.Name,
+                    SlaDays = s.SlaDays,
+                    Approvers = s.Approvers.Select(a => new PurchaseEvaluationWorkflowStepApprover
+                    {
+                        Kind = (WorkflowApproverKind)a.Kind,
+                        AssignmentValue = a.AssignmentValue,
+                    }).ToList(),
+                })
+                .ToList(),
+        };
+        db.PurchaseEvaluationWorkflowDefinitions.Add(def);
+        await db.SaveChangesAsync(ct);
+        return def.Id;
+    }
+}

src/Backend/SolutionErp.Application/PurchaseEvaluations/PurchaseEvaluationFeatures.cs

@@ -342,6 +342,7 @@ public class GetPurchaseEvaluationQueryHandler(
             .Include(x => x.Details).ThenInclude(d => d.Quotes)
             .Include(x => x.Approvals)
             .Include(x => x.Attachments)
+            .Include(x => x.DepartmentOpinions)
             .FirstOrDefaultAsync(x => x.Id == request.Id, ct)
             ?? throw new NotFoundException("PurchaseEvaluation", request.Id);
 
@@ -438,11 +439,26 @@ public class GetPurchaseEvaluationQueryHandler(
                     a.Id, a.PurchaseEvaluationSupplierId, a.FileName, a.StoragePath,
                     a.FileSize, a.ContentType, a.Purpose, a.Note, a.CreatedAt))
                 .ToList(),
+            e.DepartmentOpinions
+                .OrderBy(o => (int)o.Kind)
+                .Select(o => new PurchaseEvaluationDepartmentOpinionDto(
+                    o.Id, o.Kind, KindLabel(o.Kind),
+                    o.Opinion, o.SignedAt, o.UserId, o.UserName))
+                .ToList(),
             new PurchaseEvaluationWorkflowSummaryDto(
                 policy.Name, policy.Description,
                 policy.ActivePhases.ToList(),
                 policy.NextPhasesFrom(e.Phase).ToList()));
     }
+
+    private static string KindLabel(PeDepartmentKind k) => k switch
+    {
+        PeDepartmentKind.PheDuyet => "Phê duyệt",
+        PeDepartmentKind.Ccm => "P.CCM",
+        PeDepartmentKind.MuaHang => "P.Mua hàng",
+        PeDepartmentKind.SmPm => "SM-PM",
+        _ => k.ToString(),
+    };
 }
 
 // ========== DELETE ==========

src/Backend/SolutionErp.Domain/PurchaseEvaluations/PurchaseEvaluation.cs

@@ -34,4 +34,5 @@ public class PurchaseEvaluation : AuditableEntity
     public List<PurchaseEvaluationApproval> Approvals { get; set; } = new();
     public List<PurchaseEvaluationChangelog> Changelogs { get; set; } = new();
     public List<PurchaseEvaluationAttachment> Attachments { get; set; } = new();
+    public List<PurchaseEvaluationDepartmentOpinion> DepartmentOpinions { get; set; } = new();
 }

src/Backend/SolutionErp.Domain/PurchaseEvaluations/PurchaseEvaluationDepartmentOpinion.cs

@@ -0,0 +1,35 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// "Ý kiến 4 phòng ban" — sign-off block trên PHIẾU TRÌNH KÝ CHỌN TP/NCC.
+// 4 box: Phê duyệt / P.CCM / P.MuaHàng / SM-PM. Mỗi box có:
+// - Opinion text (text ý kiến)
+// - SignedAt date
+// - UserId người ký (lưu UserName denorm để render readable)
+//
+// Lưu thành table riêng (1:N với PurchaseEvaluation, max 4 row mỗi PE) để:
+// - Dễ query "phòng nào chưa ký"
+// - Audit history (mỗi update là 1 record? — không, dùng UPDATE in-place,
+//   audit qua PurchaseEvaluationChangelog).
+// - Không bloat header với 12 column nullable.
+public enum PeDepartmentKind
+{
+    PheDuyet = 1,    // box "PHÊ DUYỆT" trên cùng — typically Drafter/PM ký xác nhận trình
+    Ccm = 2,         // P.CCM — Cost Control review
+    MuaHang = 3,     // P.MuaHàng (PRO) — Procurement
+    SmPm = 4,        // SM-PM — Site Manager / Project Manager
+}
+
+public class PurchaseEvaluationDepartmentOpinion : AuditableEntity
+{
+    public Guid PurchaseEvaluationId { get; set; }
+    public PeDepartmentKind Kind { get; set; }
+
+    public string? Opinion { get; set; }       // text ý kiến (max 2000)
+    public DateTime? SignedAt { get; set; }
+    public Guid? UserId { get; set; }           // người ký
+    public string? UserName { get; set; }       // denorm cho readable render
+
+    public PurchaseEvaluation? PurchaseEvaluation { get; set; }
+}

src/Backend/SolutionErp.Infrastructure/Persistence/ApplicationDbContext.cs

@@ -59,6 +59,7 @@ public class ApplicationDbContext
     public DbSet<PurchaseEvaluationWorkflowStep> PurchaseEvaluationWorkflowSteps => Set<PurchaseEvaluationWorkflowStep>();
     public DbSet<PurchaseEvaluationWorkflowStepApprover> PurchaseEvaluationWorkflowStepApprovers => Set<PurchaseEvaluationWorkflowStepApprover>();
     public DbSet<PurchaseEvaluationCodeSequence> PurchaseEvaluationCodeSequences => Set<PurchaseEvaluationCodeSequence>();
+    public DbSet<PurchaseEvaluationDepartmentOpinion> PurchaseEvaluationDepartmentOpinions => Set<PurchaseEvaluationDepartmentOpinion>();
 
     // Module Ngân sách (Phase 7) — 4 bảng: Budget header + Details + Approvals + Changelogs.
     public DbSet<Budget> Budgets => Set<Budget>();

src/Backend/SolutionErp.Infrastructure/Persistence/Configurations/PurchaseEvaluationConfiguration.cs

@@ -32,6 +32,7 @@ public class PurchaseEvaluationConfiguration : IEntityTypeConfiguration<Purchase
         b.HasMany(x => x.Approvals).WithOne(a => a.PurchaseEvaluation).HasForeignKey(a => a.PurchaseEvaluationId).OnDelete(DeleteBehavior.Cascade);
         b.HasMany(x => x.Changelogs).WithOne(c => c.PurchaseEvaluation).HasForeignKey(c => c.PurchaseEvaluationId).OnDelete(DeleteBehavior.Cascade);
         b.HasMany(x => x.Attachments).WithOne(a => a.PurchaseEvaluation).HasForeignKey(a => a.PurchaseEvaluationId).OnDelete(DeleteBehavior.Cascade);
+        b.HasMany(x => x.DepartmentOpinions).WithOne(o => o.PurchaseEvaluation).HasForeignKey(o => o.PurchaseEvaluationId).OnDelete(DeleteBehavior.Cascade);
         // Quotes không FK trực tiếp tới PurchaseEvaluation (đi qua Detail) —
         // nhưng collection navigation có nên cần config riêng bên dưới.
 
@@ -217,3 +218,21 @@ public class PurchaseEvaluationCodeSequenceConfiguration
         b.Property(x => x.Prefix).HasMaxLength(100);
     }
 }
+
+public class PurchaseEvaluationDepartmentOpinionConfiguration
+    : IEntityTypeConfiguration<PurchaseEvaluationDepartmentOpinion>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationDepartmentOpinion> b)
+    {
+        b.ToTable("PurchaseEvaluationDepartmentOpinions");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.Kind).HasConversion<int>();
+        b.Property(x => x.Opinion).HasMaxLength(2000);
+        b.Property(x => x.UserName).HasMaxLength(200);
+
+        // Each PE × Kind unique — max 1 ý kiến per phòng ban per phiếu.
+        // UPDATE in-place khi user đổi ý → audit qua Changelog.
+        b.HasIndex(x => new { x.PurchaseEvaluationId, x.Kind }).IsUnique();
+    }
+}

src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/20260429041117_AddPurchaseEvaluationDepartmentOpinions.cs

@@ -0,0 +1,58 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SolutionErp.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddPurchaseEvaluationDepartmentOpinions : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationDepartmentOpinions",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    Kind = table.Column<int>(type: "int", nullable: false),
+                    Opinion = table.Column<string>(type: "nvarchar(2000)", maxLength: 2000, nullable: true),
+                    SignedAt = table.Column<DateTime>(type: "datetime2", nullable: true),
+                    UserId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    UserName = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: true),
+                    CreatedAt = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    UpdatedAt = table.Column<DateTime>(type: "datetime2", nullable: true),
+                    CreatedBy = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    UpdatedBy = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    IsDeleted = table.Column<bool>(type: "bit", nullable: false),
+                    DeletedAt = table.Column<DateTime>(type: "datetime2", nullable: true),
+                    DeletedBy = table.Column<Guid>(type: "uniqueidentifier", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationDepartmentOpinions", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationDepartmentOpinions_PurchaseEvaluations_PurchaseEvaluationId",
+                        column: x => x.PurchaseEvaluationId,
+                        principalTable: "PurchaseEvaluations",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationDepartmentOpinions_PurchaseEvaluationId_Kind",
+                table: "PurchaseEvaluationDepartmentOpinions",
+                columns: new[] { "PurchaseEvaluationId", "Kind" },
+                unique: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationDepartmentOpinions");
+        }
+    }
+}

src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/ApplicationDbContextModelSnapshot.cs

@@ -2451,6 +2451,61 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                     b.ToTable("PurchaseEvaluationCodeSequences", (string)null);
                 });
 
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDepartmentOpinion", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime?>("DeletedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("DeletedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("bit");
+
+                    b.Property<int>("Kind")
+                        .HasColumnType("int");
+
+                    b.Property<string>("Opinion")
+                        .HasMaxLength(2000)
+                        .HasColumnType("nvarchar(2000)");
+
+                    b.Property<Guid>("PurchaseEvaluationId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime?>("SignedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("UserId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("UserName")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PurchaseEvaluationId", "Kind")
+                        .IsUnique();
+
+                    b.ToTable("PurchaseEvaluationDepartmentOpinions", (string)null);
+                });
+
             modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDetail", b =>
                 {
                     b.Property<Guid>("Id")
@@ -3073,6 +3128,17 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                     b.Navigation("PurchaseEvaluation");
                 });
 
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDepartmentOpinion", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", "PurchaseEvaluation")
+                        .WithMany("DepartmentOpinions")
+                        .HasForeignKey("PurchaseEvaluationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("PurchaseEvaluation");
+                });
+
             modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDetail", b =>
                 {
                     b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", "PurchaseEvaluation")
@@ -3199,6 +3265,8 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
 
                     b.Navigation("Changelogs");
 
+                    b.Navigation("DepartmentOpinions");
+
                     b.Navigation("Details");
 
                     b.Navigation("Quotes");