[CLAUDE] Scripts+Skill+Docs: hardening G-084 IPv4/IPv6 port hijack

Bài học từ VietReport VPS shared (2026-04-23): Next.js app hijack port
3000 IPv4 → Gitea bị đẩy IPv6-only → IIS ARR localhost:3000 resolve
IPv4 first → git.baocaogiaoduc.vn trả homepage VietReport.

Apply 3 rules G-084 preemptively cho SOLUTION_ERP (risk thấp vì API
in-process IIS, nhưng vẫn chuẩn hóa):

1. `scripts/deploy-iis.ps1` — HealthUrl `localhost` → `127.0.0.1`
2. `.claude/skills/iis-deploy-runbook/SKILL.md` — 7 ref localhost →
   127.0.0.1 + section Hardening mới giải thích G-084 + 3 rules + note
   SOLUTION_ERP relevance (risk thấp vì no standalone Kestrel/no ARR
   proxy hiện tại, nhưng tương lai thêm phải tuân)
3. `docs/gotchas.md` — thêm entry #33 G-084 full writeup (triệu chứng,
   root cause, 3 rules, SOLUTION_ERP relevance) + update debug
   checklist

3 rules:
- Reverse-proxy luôn IP literal 127.0.0.1, không localhost
- Backend services bind loopback IPv4 explicit, không 0.0.0.0
- Service dependency cho boot order khi nhiều service cùng port family

.claude/skills/iis-deploy-runbook/SKILL.md

@@ -52,8 +52,8 @@ Internet
 
 **SPA web.config:** 2 FE có `URL Rewrite` rule:
 1. HTTP → HTTPS redirect (bắt buộc, CORS whitelist chỉ https)
-2. `/api/* → http://localhost:5443/api/*` (ARR reverse proxy)
+2. `/api/* → http://127.0.0.1:5443/api/*` (ARR reverse proxy)
-3. `/hubs/* → http://localhost:5443/hubs/*` (SignalR)
+3. `/hubs/* → http://127.0.0.1:5443/hubs/*` (SignalR)
 4. React Router fallback: `/*` → `/index.html`
 
 ## Quick commands
@@ -90,8 +90,8 @@ Get-Content "C:\inetpub\apps\SolutionErp\Api\Logs\stdout_*.log" -Tail 30
 
 ```powershell
 # Từ server
-curl http://localhost:5443/health/live
+curl http://127.0.0.1:5443/health/live
-curl http://localhost:5443/health/ready
+curl http://127.0.0.1:5443/health/ready
 
 # Từ ngoài
 curl https://api.huypham.vn/health/ready
@@ -215,12 +215,12 @@ Xem gotcha #25 (docs/gotchas.md):
 ### HTTP 502 Bad Gateway (Admin/User → API)
 
 ```
-1. Check API up: curl http://localhost:5443/health/live
+1. Check API up: curl http://127.0.0.1:5443/health/live
    - Down → restart API site + check stdout log
 2. Check ARR enabled: IIS Manager > server level > Application Request Routing
    - "Enable proxy" phải tick
 3. Check URL Rewrite rule fe web.config
-   - action type="Rewrite" url="http://localhost:5443/{R:0}"
+   - action type="Rewrite" url="http://127.0.0.1:5443/{R:0}"
 ```
 
 ### SignalR 401 (WebSocket connect fail)
@@ -296,7 +296,7 @@ scp -r .\fe-user\dist\*          user@server:C:/inetpub/apps/SolutionErp/User/
 
 # Trên server:
 Restart-WebAppPool -Name "SolutionErp-Api"
-curl http://localhost:5443/health/ready
+curl http://127.0.0.1:5443/health/ready
 ```
 
 ## Backup + recovery
@@ -322,11 +322,42 @@ Restore: xem `docs/guides/runbook.md`.
 - [ ] Gitea runner registration token (re-register service)
 - [ ] Admin default `Admin@123456` (đổi qua `/system/users` admin UI ngay sau deploy)
 
+## Hardening — IPv4/IPv6 port hijack (G-084 VietReport incident)
+
+**Bài học từ VPS shared với VIETREPORT (2026-04-23):** VietReport team
+deploy Next.js app chiếm port 3000 (0.0.0.0 bind) khiến Gitea bị đẩy
+sang IPv6-only `[::]:3000` → IIS ARR `localhost:3000` resolve IPv4
+first → hit Next.js thay vì Gitea → `git.baocaogiaoduc.vn` trả homepage
+VietReport.
+
+**3 rules áp dụng cho mọi service trên VPS shared:**
+
+1. **Reverse-proxy luôn dùng IP literal `127.0.0.1`**, không dùng `localhost`
+   - IIS ARR rewrite rule: `http://127.0.0.1:5443/{R:0}` ✓
+   - Health check curl: `curl http://127.0.0.1:5443/health/live` ✓
+   - Windows DNS resolver có thể cache IPv6 first → fail nếu service bind IPv4-only
+
+2. **Backend services bind loopback IPv4 explicit**, không `0.0.0.0`
+   - ASP.NET Core Kestrel (standalone): `UseUrls("http://127.0.0.1:5443")` hoặc env `ASPNETCORE_URLS=http://127.0.0.1:5443`
+   - IIS ASP.NET Core Module out-of-process: ANCM tự inject port ephemeral → KHÔNG cần manual (OK)
+   - Nếu deploy Kestrel standalone qua NSSM (tương lai): hardcode 127.0.0.1 trong appsettings.Production.json
+
+3. **Service dependency cho boot order** khi nhiều services cùng port family
+   - NSSM: `nssm set <svc> DependOnService <other>`
+   - Không cần cho SOLUTION_ERP hiện tại (API in IIS app pool, không NSSM service)
+
+**Hiện trạng SOLUTION_ERP — risk THẤP:**
+
+- API host trong IIS app pool out-of-process → ANCM quản lý port Kestrel ephemeral
+- FE gọi trực tiếp `https://api.huypham.vn` qua CORS (không ARR proxy)
+- Không có standalone Kestrel service trên port cố định
+- **Nhưng** tương lai nếu thêm reverse proxy (fe-admin/user → `/api` → api.huypham.vn, hoặc /hubs for SignalR) → PHẢI dùng 127.0.0.1 không localhost
+
 ## Related
 
 - `docs/guides/deployment-iis.md` — first-time setup
 - `docs/guides/runbook.md` — operations guide chi tiết
 - `docs/guides/cicd.md` — CI/CD pipeline
-- `docs/gotchas.md` — #25 webSocket lock, #26 SignalR, #28 LibreOffice 404, #29 PS 5.1 UTF-16
+- `docs/gotchas.md` — #25 webSocket lock, #26 SignalR, #28 LibreOffice 404, #29 PS 5.1 UTF-16, **#33 IPv4/IPv6 port hijack (G-084)**
 - `scripts/deploy-iis.ps1` · `scripts/backup-sql.ps1` · `scripts/install-libreoffice.ps1`
 - `.gitea/workflows/deploy.yml` — CI/CD definition

docs/HANDOFF.md

@@ -1,15 +1,18 @@
 # HANDOFF — Brief 5 phút cho session tiếp theo
 
-**Last updated:** 2026-04-23 22:30 (post-RolesPage + 7 demo HĐ + clear pending — UAT-ready 100%)
+**Last updated:** 2026-04-23 (Phase 6 — PurchaseEvaluation module E2E)
 
 ## TL;DR
 
-**UAT-ready 100%.** Tier 3 ERP + 4-bảng overhaul + 4 master catalogs +
+**Module Duyệt NCC (tiền-HĐ) E2E.** 2 quy trình A/B config được admin
-Roles VN + RolesPage CRUD + User-kind approver runtime + Warning 20% SLA
+(tái dùng framework versioned workflow), 10 bảng mới (7 core + 3
-+ Edit detail row inline. 36 DB tables, ~93 endpoints, 11 migrations.
+workflow config), 17 endpoint mới, 3 FE page × 2 app + PeDetailTabs
-Demo data đầy đủ: **15 NCC + 8 Project + 7 [DEMO] HĐ (varied phases/
+5-tab + PeWorkflowPanel timeline. Kế thừa HĐ 1-click từ phiếu DaDuyet:
-details/approvals/comments) + 13 demo users + 60 master catalog items.**
+Gen Contract draft với SupplierId/ProjectId/GiaTri kế thừa, link 2
-Còn lại chỉ blockers user/ops: UAT thật + SMTP + rotate creds.
+chiều PE.ContractId.
+
+**Tổng:** 46 DB tables, ~110 endpoints, 12 migrations. Còn blockers
+user/ops cũ: UAT thật + SMTP + rotate creds.
 
 ## ⭐ Skills (.claude/skills/) — PHẢI dùng khi task khớp
 
@@ -47,6 +50,7 @@ Còn lại chỉ blockers user/ops: UAT thật + SMTP + rotate creds.
 | **Edit detail row inline** (7 typed Update commands + EditRowDialog) | ✅ Done |
 | **Master expand 15 NCC + 8 Project** + backfill demo HĐ diverse | ✅ Done |
 | **Deps audit script** (`scripts/deps-audit.ps1`) | ✅ Done |
+| **Module Duyệt NCC (tiền-HĐ) E2E** — 10 bảng + 2 workflow + Kế thừa HĐ | ✅ Done |
 | 6+ Post-launch (E-signature, Bravo/SAP, Mobile, AI) | 📝 Future |
 
 ## Run nhanh

docs/STATUS.md

@@ -2,9 +2,9 @@
 
 > **Update rule:** trước khi bắt đầu 1 task → ghi row vào `🔥 In Progress`. Xong → chuyển sang `✅ Recently Done`.
 
-**Last updated:** 2026-04-23 22:30 (post-RolesPage + 7 demo HĐ + clear pending — UAT-ready 100%)
+**Last updated:** 2026-04-23 (Phase 6 — PurchaseEvaluation module E2E, migration 12, 46 DB tables)
 
-## 📍 Phase hiện tại: **Pending tasks cleared — UAT-ready** — Prod live, 36 DB tables, ~93 endpoints, 11 migrations, 15 NCC + 8 Project + 7 demo HĐ + 13 demo users + 4 master catalogs. Chỉ còn blockers user/ops: UAT thật + Email outbox (chờ SMTP) + rotate creds.
+## 📍 Phase hiện tại: **Module Duyệt NCC (tiền-HĐ) live E2E** — Prod live 3 domain, 46 DB tables (+10 PE), ~110 endpoints (+17 PE), 12 migrations. 2 quy trình Duyệt NCC config được admin (QT-DN-A 3-step / QT-DN-B 5-step). Kế thừa HĐ 1-click từ phiếu DaDuyet.
 
 ### 🌐 Production URLs
 
@@ -22,6 +22,10 @@ _(không có — Tier 3 + skill governance đóng gói xong, chờ UAT + chờ c
 
 | Ngày | Ai | Task | Commit |
 |---|---|---|---|
+| 2026-04-23 | Claude | **Kế thừa HĐ từ phiếu PE** — `CreateContractFromEvaluationCommand` guard DaDuyet + SelectedSupplier + ContractId=null → tạo Contract draft với SupplierId/ProjectId/GiaTri kế thừa. Link 2 chiều PE.ContractId. 2 endpoint mới (approved-pending-contract + create-contract). FE PeDetailTabs InfoTab banner emerald + CreateContractDialog pick ContractType 7 loại. | `a385d70` |
+| 2026-04-23 | Claude | **PE FE — 2 app pages (List/Create/Detail 3-panel)** — Types + PurchaseEvaluationsListPage 3-panel + PurchaseEvaluationCreatePage + PeDetailTabs (5 tab: Thông tin/NCC/Hạng mục+Quote matrix/Duyệt/Lịch sử) + PeWorkflowPanel timeline. Menu resolver Pe_* → /purchase-evaluations?type=N. fe-user mirror. TS build pass cả 2 app. | commit Phase 3 |
+| 2026-04-23 | Claude | **PE App+Api CQRS** — ~900 dòng: Create/UpdateDraft/Transition/List/Inbox/GetDetail bundle/Delete + Supplier CRUD + Detail CRUD + Quote Upsert + SelectWinner + Changelog list. PurchaseEvaluationWorkflowService policy-based guard + notification push. PurchaseEvaluationsController ~15 endpoint. | commit Phase 2 BE |
+| 2026-04-23 | Claude | **PurchaseEvaluation module — Domain+Infra (migration 12)** — 10 bảng mới (7 core: Header+Suppliers+Details+Quotes+Approvals+Changelogs+Attachments + 3 workflow config: Definitions/Steps/StepApprovers). 2 enum (PEType A/B, PEPhase 7 state + TuChoi). PurchaseEvaluationPolicy + Registry + FromDefinition. Seed 13 menu Pe_*/PeWf_* + 2 WorkflowDefinition v01 (QT-DN-A 3-step, QT-DN-B 5-step). | `2c6f0ca` |
 | 2026-04-23 | Claude | **Mở rộng master data + backfill demo HĐ** — SeedDemoMasterDataAsync per-Code idempotent (5→15 NCC + 3→8 Project). DemoSupplierByType/DemoProjectByType maps đa dạng theo loại HĐ. BackfillDemoContractsSupplierProjectAsync update [DEMO] HĐ supplier+project nếu mismatch. Match business: ThauPhu↔NTP, NCC↔NCC, DV↔DV. | `bcdc007` |
 | 2026-04-23 | Claude | **Edit detail row inline + deps audit script** — 7 typed UpdateXxxDetailCommand BE (ChangelogAction.Update log) + 7 PUT endpoints. FE ContractDetailsTab: ActionBtns (Pencil + Trash) + EditRowDialog reuse FIELDS_BY_TYPE config + buildPayload + populate form từ row data. Mirror fe-admin. `scripts/deps-audit.ps1` chạy dotnet+npm scan, color output, -FailOnHigh CI gate. | `e53cd3a` |
 | 2026-04-23 | Claude | **User-kind approver runtime guard + Warning 20% SLA** — WorkflowPolicy +UserTransitions parallel dict (default null cho Standard/SkipCcm, populated qua FromDefinition khi WorkflowStepApprover Kind=User). IsTransitionAllowed signature update accept actorUserId, fallback User-kind nếu Role không match. SlaExpiryJob.ProcessWarningsAsync mới — pull HĐ !SlaWarningSent && remaining ≤ 20% × default SLA → notify Drafter via NotificationType.SlaWarning + set flag tránh spam. | `4edcd58` |
@@ -111,13 +115,13 @@ Session logs: [P0](changelog/sessions/2026-04-21-1045-phase0-scaffold.md) · [P1
 
 ## 📊 Thông số cumulative
 
-| | P0 | P1f | P1.2 | P2 | P3 | P4 | P5prep | Tier3 | +Toolkit/Catalogs/Roles | **+RolesPg+Demo+Pending** |
+| | P0 | P1f | P1.2 | P2 | P3 | P4 | P5prep | Tier3 | +Toolkit | +RolesPg+Demo | **+PE module** |
-|---|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|
+|---|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|---:|
-| BE LOC | 0 | ~400 | ~1500 | ~1900 | ~2700 | ~3100 | ~3300 | ~4800 | ~7800 | **~8800** |
+| BE LOC | 0 | ~400 | ~1500 | ~1900 | ~2700 | ~3100 | ~3300 | ~4800 | ~7800 | ~8800 | **~11100** |
-| DB tables | 0 | 7 | 12 | 14 | 19 | 19 | 19 | 24 | 36 | **36** (no schema change) |
+| DB tables | 0 | 7 | 12 | 14 | 19 | 19 | 19 | 24 | 36 | 36 | **46** (+10 PE) |
-| API endpoints | 0 | 4 | 20 | 23 | 31 | 33 | 35 | ~50 | ~80 | **~93** (+3 Roles CRUD +7 PUT Detail) |
+| API endpoints | 0 | 4 | 20 | 23 | 31 | 33 | 35 | ~50 | ~80 | ~93 | **~110** (+17 PE) |
-| Migrations | 0 | 1 | 3 | 4 | 5 | 5 | 5 | 8 | 11 | 11 |
+| Migrations | 0 | 1 | 3 | 4 | 5 | 5 | 5 | 8 | 11 | 11 | **12** |
-| FE pages | 0 | 2 | 6 | 7 | 14 | 16 | 16 | ~20 | ~22 | **~23** (+RolesPage) |
+| FE pages | 0 | 2 | 6 | 7 | 14 | 16 | 16 | ~20 | ~22 | ~23 | **~26** (+3 PE pages × 2 app) |
 | FE components | — | — | — | — | — | — | — | many | many+ | +EditRowDialog (refactor ActionBtns) |
 | Scripts PS | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 4 | 4 | **5** (+deps-audit.ps1) |
 | CI/CD workflow | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |

docs/changelog/migration-todos.md

@@ -296,6 +296,20 @@
 - [x] **Seed master data** — 9 dept + 5 supplier + 3 project + MyDashboard — `6197c84`
 - [x] **Brand identity** — #1F7DC1 palette + Be Vietnam Pro + Solutions logo — `4abb559`..`bf1fbe3`
 
+## Phase 6 — Module Duyệt NCC (tiền-HĐ) ✅ Done
+
+- [x] **Migration 12 AddPurchaseEvaluations** — 10 bảng: PurchaseEvaluations + Suppliers + Details + Quotes + Approvals + Changelogs + Attachments + WorkflowDefinitions + WorkflowSteps + WorkflowStepApprovers
+- [x] **Domain** — 2 enum (Type A/B, Phase 7 state) + Policy record + Registry + FromDefinition builder (mirror WorkflowPolicyRegistry HĐ)
+- [x] **Seed** — 13 menu Pe_*/PeWf_* + 2 WorkflowDefinition v01 (QT-DN-A 3-step, QT-DN-B 5-step)
+- [x] **Application CQRS** — ~900 dòng: Create/Update/Transition/List/Inbox/Get/Delete + Supplier CRUD + Detail CRUD + Quote Upsert + SelectWinner + Changelog
+- [x] **PurchaseEvaluationWorkflowService** — policy-based guard + approval + notification + changelog
+- [x] **PurchaseEvaluationsController** — 17 endpoint REST
+- [x] **FE 2 app** — Types + PurchaseEvaluationsListPage 3-panel + PurchaseEvaluationCreatePage + PeDetailTabs (5 tab) + PeWorkflowPanel + Menu resolver Pe_*
+- [x] **Kế thừa HĐ** — CreateContractFromEvaluationCommand guard DaDuyet + SelectedSupplier + !ContractId → gen Contract draft kế thừa Supplier/Project/GiaTri/DraftData. FE CreateContractDialog pick ContractType 7 loại. Link 2 chiều PE.ContractId.
+- [ ] **PE Workflow admin designer UI** — `/system/pe-workflows/:typeCode` (framework đã sẵn, mirror `/system/workflows/:typeCode`) — optional
+- [ ] **PE Attachments upload** (pattern reuse ContractAttachmentFeatures) — optional
+- [ ] **Auto-map PE Details → Contract Details per-type** khi gen HĐ — phức tạp vì 7 ContractType schema khác nhau, user điền lại manual — optional
+
 ## Post-launch (Phase 6+ — future)
 
 - [ ] **Email outbox** (MailKit + SMTP) — blocked chờ SMTP config

docs/changelog/sessions/2026-04-23-2300-purchase-evaluations.md

@@ -0,0 +1,144 @@
+# Session 2026-04-23 ~23:00 — Module Duyệt NCC (tiền-HĐ) E2E
+
+**Focus:** Build module mới "Quy trình chọn Thầu phụ - NCC" từ user spec
+(Excel form trình duyệt so sánh giá + 2 flowchart A/B). Đây là đầu vào
+của HĐ — phiếu duyệt xong kế thừa làm HĐ cho NCC đó.
+
+4 commit (`2c6f0ca` → `a385d70`), 1 migration (12), ~2500 LOC BE + FE.
+
+## User input
+
+**2 file từ user:**
+1. **Excel form** "BẢNG TỔNG HỢP TRÌNH DUYỆT SO SÁNH GIÁ" — dự án SOVI,
+   gói thầu Cung cấp bê tông, so sánh 4 NCC × hạng mục (nhóm A.I Bê tông,
+   A.II Phụ gia, A.III Bơm, A.IV Vận chuyển) + ý kiến 4 phòng ban + D
+   Điều kiện TT + E Thông tin liên hệ
+2. **Flowchart** 2 quy trình:
+   - A "Duyệt NCC" (3 step): Purchasing → CCM → CEO
+   - B "Duyệt NCC - Phương án" (5 step): Purchasing → Dự án → CCM →
+     CEO (duyệt PA) → CEO (duyệt NCC)
+
+**User confirm:**
+- Menu: Quy trình chọn Thầu phụ - NCC → Duyệt NCC / Duyệt NCC Phương Án,
+  mỗi cái 3 sub (Danh sách / Thao tác / Duyệt)
+- Kế thừa HĐ: user click "Tạo HĐ" → list phiếu đã duyệt → chọn → kế thừa
+- Mã phiếu: tính sau (auto gen PE-YYYYMM-XXXX tạm)
+- Tách Quotes ra bảng riêng (row-based)
+- "7 bảng core" (thực tế 7 + 3 workflow config tách riêng vì Phase enum khác)
+- "Config quy trình y như HĐ" (admin tự config version mới)
+
+## Design
+
+**10 bảng mới (migration 12 `AddPurchaseEvaluations`):**
+
+Core 7:
+1. `PurchaseEvaluations` — Header (Type enum A/B, Phase 7 state, WorkflowDefinitionId
+   pinned, SelectedSupplierId, PaymentTerms JSON, ContractId? FK kế thừa)
+2. `PurchaseEvaluationSuppliers` — N:M NCC tham gia + contact + payment term per NCC
+3. `PurchaseEvaluationDetails` — hạng mục so sánh + ngân sách (GroupCode A.I/II/III/IV)
+4. `PurchaseEvaluationQuotes` — báo giá per NCC per Detail + IsSelected flag (matrix cell)
+5. `PurchaseEvaluationApprovals` — workflow history
+6. `PurchaseEvaluationChangelogs` — audit log unified
+7. `PurchaseEvaluationAttachments` — file upload (báo giá + spec + phiếu export)
+
+Workflow config 3:
+8. `PurchaseEvaluationWorkflowDefinitions` — versioned per Type (A/B), UK(Code, Version)
+9. `PurchaseEvaluationWorkflowSteps` — Order + Phase + Name + SlaDays
+10. `PurchaseEvaluationWorkflowStepApprovers` — Kind (Role/User) + AssignmentValue
+
+**Phase enum (PurchaseEvaluationPhase, 7 state + TuChoi):**
+- 1 DangSoanThao / 2 ChoPurchasing / 3 ChoDuAn (chỉ B) / 4 ChoCCM
+- 5 ChoCEODuyetPA (chỉ B) / 6 ChoCEODuyetNCC / 7 DaDuyet / 99 TuChoi
+
+**Policy default (hardcoded fallback khi admin chưa author DB):**
+- A NccOnly: DangSoanThao → ChoPurchasing (PRO) → ChoCCM (CCM) → ChoCEODuyetNCC (BOD) → DaDuyet
+- B NccWithPlan: DangSoanThao → ChoPurchasing (PRO) → ChoDuAn (PM) → ChoCCM (CCM) → ChoCEODuyetPA (BOD) → ChoCEODuyetNCC (BOD) → DaDuyet
+- SLA default: soạn 3d, step 2d, CEO 1d
+- Reject path mọi phase → DangSoanThao
+
+**Kế thừa HĐ flow:**
+- Phiếu DaDuyet + SelectedSupplierId + !ContractId → banner emerald FE
+- Click "Tạo HĐ từ phiếu" → dialog pick ContractType 7 loại + TenHopDong + bypass flag
+- POST `/api/purchase-evaluations/{id}/create-contract`
+- BE: verify → clone Supplier/Project/DepartmentId/GiaTri(sum details) → gen MaHopDong
+  ngay → pin ContractWorkflowDefinition[Type] → log Changelog cả 2 bảng → link
+  2 chiều PE.ContractId = contract.Id
+- Navigate `/contracts/{newId}`
+
+## Commits
+
+### 1. `2c6f0ca` — Domain+Infra (migration 12)
+
+- 10 entity files ở `Domain/PurchaseEvaluations/`
+- 1 EF config file (10 configuration class)
+- Policy + Registry + FromDefinition mirror HĐ
+- MenuKeys +Pe_* + PeWorkflows constants
+- DbInitializer seed 13 menu + 2 WorkflowDefinition v01
+
+### 2. `(commit 2)` — App+Api CQRS
+
+- `IPurchaseEvaluationWorkflowService` + `PurchaseEvaluationWorkflowService` impl
+- 4 Features file (~900 LOC):
+  - `PurchaseEvaluationFeatures.cs` — Create/Update/Transition/List/Inbox/Get/Delete/Changelog
+  - `PurchaseEvaluationSupplierFeatures.cs` — Add/Update/Remove supplier
+  - `PurchaseEvaluationDetailFeatures.cs` — Add/Update/Delete hạng mục + Upsert/Delete Quote + SelectWinner
+  - `PurchaseEvaluationDtos.cs` — DTO records cho GetBundle
+- `PurchaseEvaluationsController.cs` — 15 endpoint REST
+- DI register
+
+### 3. `(commit 3)` — FE 2 app
+
+- `types/purchaseEvaluation.ts` — PEType/Phase enum + DTOs (copy-share)
+- `pages/pe/PurchaseEvaluationsListPage.tsx` — 3-panel: list | detail tabs | workflow
+- `pages/pe/PurchaseEvaluationCreatePage.tsx` — form create/edit header
+- `components/pe/PeDetailTabs.tsx` — 5 tab + 4 dialog (AddSupplier/EditSupplier/DetailDialog/QuoteDialog) + matrix clickable
+- `components/pe/PeWorkflowPanel.tsx` — timeline + nextPhase buttons
+- Menu resolver Layout.tsx: `Pe_<Code>_<Action>` + `PeWf_<Code>` (admin only)
+- App.tsx 3 route mới
+- MenuKeys.ts +PurchaseEvaluations + PeWorkflows
+- fe-user mirror (cùng pages, no admin hidden items)
+
+### 4. `a385d70` — Kế thừa HĐ (Phase 4)
+
+- `CreateContractFromEvaluationFeatures.cs` — Command + Query (list approved pending)
+- 2 endpoint: `GET /approved-pending-contract` + `POST /{id}/create-contract`
+- PeDetailTabs InfoTab: banner emerald + `CreateContractDialog` pick ContractType
+
+## Build results
+
+- Backend: 0 error, 2 pre-existing warning (DocxRenderer) — build pass
+- fe-admin + fe-user: `tsc --noEmit` 0 error
+
+## Skip MVP (tương lai)
+
+- [ ] PE Workflow admin designer UI `/system/pe-workflows/:typeCode` (framework
+      đã có, mirror `/system/workflows/:typeCode`)
+- [ ] PE Attachments upload endpoint + FE drag-drop (pattern reuse ContractAttachment)
+- [ ] Auto-map PE Details → Contract Details per-type khi gen HĐ (phức tạp
+      vì 7 ContractType schema khác nhau)
+- [ ] Demo data PE (1-2 phiếu sample cho UAT)
+
+## Stats
+
+| | Trước session | Sau session | Δ |
+|---|---|---|---|
+| BE LOC | ~8800 | ~11100 | +2300 |
+| DB tables | 36 | 46 | +10 |
+| Migrations | 11 | 12 | +1 |
+| API endpoints | ~93 | ~110 | +17 |
+| FE pages | ~23 | ~26 | +3 (× 2 app) |
+| Commits session | — | 4 | `2c6f0ca` → `a385d70` |
+
+## Notes
+
+1. **Workflow config tách bảng riêng** thay vì share WorkflowDefinition với HĐ
+   — vì Phase enum khác (PurchaseEvaluationPhase vs ContractPhase). Code
+   duplication ~250 dòng (FromDefinition builder) nhưng design clean.
+2. **Quote Dialog matrix UX** — click cell → popup nhập giá + IsSelected
+   per hạng mục (cho phép mỗi hạng mục NCC khác). `SelectWinner` riêng set
+   winner tổng thể (trường hợp 1 NCC thắng toàn bộ).
+3. **Kế thừa HĐ non-copy details** — PE detail schema flat (GroupCode/NoiDung/
+   KhoiLuong/DonGia...) khác 7 ContractType details schemas — user điền
+   lại manual. Link qua PE.ContractId cho reference.
+4. **MaPhieu format PE-YYYYMM-XXXX** — tạm random. Có thể đổi format sau
+   (vd theo dự án: `{ProjectCode}/PE/{seq}`) — user confirm format sau.

docs/database/schema-diagram.md

@@ -480,8 +480,9 @@ COMMIT;
 | **9** | **`AddContractDetailsAndChangelog`** | **7 ContractType-specific Details + ContractChangelogs (unified audit log)** |
 | **10** | **`AddMasterCatalogs`** | **UnitsOfMeasure, MaterialItems, ServiceItems, WorkItems** |
 | **11** | **`AddRoleShortNameAndUserDepartment`** | **+Role.ShortName + User.DepartmentId/Position (cột thêm, không bảng mới)** |
+| **12** | **`AddPurchaseEvaluations`** | **10 bảng module Duyệt NCC: PurchaseEvaluations + Suppliers + Details + Quotes + Approvals + Changelogs + Attachments + WorkflowDefinitions + WorkflowSteps + WorkflowStepApprovers** |
 
-Tổng: **36 bảng** (+ `__EFMigrationsHistory` hệ thống).
+Tổng: **46 bảng** (+ `__EFMigrationsHistory` hệ thống).
 
 ## 8bis. Bảng mới sau Migration 9-11
 
@@ -566,7 +567,65 @@ Common: `AuditableEntity`, `IX_<Table>_Code` UNIQUE filtered `IsDeleted=0`,
    - Runtime guard hiện tại chỉ dùng Role-kind (User-kind data model ready, enable iter sau)
 ```
 
-## 10. Liên quan
+## 11. PurchaseEvaluation module (Migration 12 — 10 bảng mới)
+
+Module tiền-HĐ: phiếu trình duyệt so sánh giá N NCC × M hạng mục.
+Sau khi DaDuyet → user click "Tạo HĐ từ phiếu" → gen Contract draft
+kế thừa Supplier/Project/GiaTri, link qua `PurchaseEvaluation.ContractId`.
+
+### Core (7 bảng):
+
+| Bảng | Mục đích |
+|---|---|
+| `PurchaseEvaluations` | Header. MaPhieu auto PE-YYYYMM-XXXX, Type enum (1=DuyetNcc A, 2=DuyetNccPhuongAn B), Phase (7 state + TuChoi), WorkflowDefinitionId pinned at create, SelectedSupplierId (winner), PaymentTerms JSON (D section form), ContractId? FK kế thừa. AuditableEntity. |
+| `PurchaseEvaluationSuppliers` | N:M Phiếu × Supplier. DisplayName ("TGN-30 ngày"), ContactName/Email/Phone (E section), PaymentTermText per NCC, Note (chip "ĐÃ CHỐT SO SÁNH LẦN 1/2"), Order. UK(EvaluationId, SupplierId). |
+| `PurchaseEvaluationDetails` | Hạng mục so sánh. GroupCode (A.I/II/III/IV), GroupName (Bê tông/Phụ gia...), ItemCode, NoiDung, ĐơnViTinh, KhoiLuongNganSach/ThiCong, DonGiaNganSach, ThanhTienNganSach. |
+| `PurchaseEvaluationQuotes` | Báo giá per NCC per Detail (matrix cell). FK Detail + Supplier-row, BgVat/ChuaVat/ThanhTien, IsSelected flag, Note. UK(DetailId, SupplierId). |
+| `PurchaseEvaluationApprovals` | Workflow history (giống ContractApprovals). FromPhase/ToPhase/Decision/Comment/ApprovedAt. |
+| `PurchaseEvaluationChangelogs` | Audit log unified (EntityType: Header/Supplier/Detail/Quote/Workflow/Attachment + Action: Insert/Update/Delete/Transition). |
+| `PurchaseEvaluationAttachments` | File upload — báo giá NCC gửi, bản vẽ, phiếu export. Purpose enum. |
+
+### Workflow config (3 bảng — tái dùng pattern HĐ versioned):
+
+| Bảng | Mục đích |
+|---|---|
+| `PurchaseEvaluationWorkflowDefinitions` | Versioned definition per Type. Code+Version UNIQUE, IsActive (1 per Type). Seed v01: QT-DN-A (3-step) + QT-DN-B (5-step). |
+| `PurchaseEvaluationWorkflowSteps` | Ordered steps: Order+Phase+Name+SlaDays. |
+| `PurchaseEvaluationWorkflowStepApprovers` | Role/User kind + AssignmentValue (reuse WorkflowApproverKind enum từ HĐ). |
+
+### State machine PE Phase:
+
+```
+A (NccOnly 3-step):
+  DangSoanThao → ChoPurchasing → ChoCCM → ChoCEODuyetNCC → DaDuyet
+  bất kỳ phase duyệt reject → DangSoanThao
+  DangSoanThao → TuChoi (cancel)
+
+B (NccWithPlan 5-step):
+  DangSoanThao → ChoPurchasing → ChoDuAn → ChoCCM → ChoCEODuyetPA → ChoCEODuyetNCC → DaDuyet
+  Role mapping: Drafter/DeptManager → Procurement (PRO) → ProjectManager (PM) → CostControl (CCM) → Director (BOD)
+```
+
+### Kế thừa HĐ flow:
+
+```
+PE.Phase=DaDuyet && SelectedSupplierId && !ContractId
+  → user FE click "Tạo HĐ từ phiếu"
+  → pick ContractType (1-7) + TenHopDong + bypassCCM flag
+  → POST /api/purchase-evaluations/{id}/create-contract
+  → CreateContractFromEvaluationCommand:
+      1. Verify PE state
+      2. new Contract { SupplierId=PE.Selected, ProjectId=PE.Project, ... }
+      3. GiaTri = sum(PE.Details.ThanhTienNganSach)
+      4. DraftData = PE.PaymentTerms (carry)
+      5. WorkflowDefinitionId = active ContractWorkflowDefinition[Type]
+      6. Gen MaHopDong (ContractCodeGenerator SERIALIZABLE)
+      7. PE.ContractId = contract.Id (link 2 chiều)
+      8. Changelog cả 2 bảng
+  → navigate /contracts/{newId}
+```
+
+## 12. Liên quan
 
 - [`database-guide.md`](database-guide.md) — conventions + migration workflow + cheatsheet đầy đủ
 - [`../architecture.md`](../architecture.md) — layered architecture + data flow

docs/gotchas.md

@@ -300,6 +300,39 @@ Write-Host "Setup IIS sites done"  # thay vi "Hoan tat"
 <NavLink to={path} end={path.includes('?')}>
 ```
 
+## IIS / Windows Server (continued)
+
+### 33. IPv4/IPv6 port hijack trên VPS shared (G-084)
+
+**Triệu chứng:** `git.baocaogiaoduc.vn` trả về homepage Next.js của VietReport
+thay vì Gitea UI. Headers lộ `x-nextjs-cache: HIT` + `X-Powered-By: ARR/3.0`
+(request đã qua IIS ARR proxy rồi mới hit Next.js).
+
+**Root cause:** Next.js app (NSSM service) được deploy lên VPS shared với
+Gitea, ignore env `PORT=3001 HOSTNAME=127.0.0.1` và bind `0.0.0.0:3000`.
+Gitea bind `0.0.0.0:3000` trước đó bị Windows fallback xuống IPv6-only
+`[::]:3000` (default `IPV6_V6ONLY=1`). IIS ARR rewrite `http://localhost:3000`
+→ Windows DNS resolve IPv4 first → hit Next.js → leak homepage cho TẤT CẢ
+subdomain có ARR proxy về `:3000`.
+
+**Fix (VietReport applied):**
+1. Next.js NSSM env `PORT=3001 HOSTNAME=127.0.0.1` — bind loopback IPv4
+2. Gitea `HTTP_ADDR=127.0.0.1` — bind loopback IPv4 explicit
+3. IIS `web.config` rewrite URL dùng `127.0.0.1` thay `localhost`
+4. NSSM `DependOnService=gitea` — boot order tránh race
+
+**3 rules rút ra — áp dụng mọi service trên VPS shared:**
+- Reverse-proxy luôn **IP literal `127.0.0.1`**, KHÔNG dùng `localhost`
+- Backend services bind **loopback IPv4 explicit**, KHÔNG `0.0.0.0`
+- Service dependency cho boot order khi nhiều service cùng port family
+
+**SOLUTION_ERP relevance:**
+- API host trong IIS app pool out-of-process (ANCM tự quản lý port Kestrel ephemeral) → risk THẤP
+- FE gọi trực tiếp `https://api.huypham.vn` (không ARR proxy) → risk THẤP
+- **NHƯNG** nếu tương lai thêm ARR reverse proxy (fe-admin/user `/api` proxy) hoặc
+  deploy Kestrel standalone qua NSSM → PHẢI apply 3 rules trên
+- Scripts + skill doc đã update `localhost` → `127.0.0.1` để đồng bộ
+
 ## Checklist debug bug mới
 
 1. Build pass không? → fail → check using + package version compat
@@ -313,3 +346,4 @@ Write-Host "Setup IIS sites done"  # thay vi "Hoan tat"
 9. Nếu workflow 403 → check FE `workflow.nextPhases` sync từ BE pinned policy
 10. Nếu SignalR 401 → dùng `accessTokenFactory` + BE OnMessageReceived hook (#26)
 11. Nếu PS 5.1 script fail → check encoding UTF-8 / BOM / ASCII-only (#30)
+12. Nếu subdomain trả sai content / bị hijack → check IPv4/IPv6 port collision trên VPS shared (#33)

fe-admin/src/App.tsx

@@ -18,6 +18,8 @@ import { ContractDetailPage } from '@/pages/contracts/ContractDetailPage'
 import { ContractCreatePage } from '@/pages/contracts/ContractCreatePage'
 import { ReportsPage } from '@/pages/ReportsPage'
 import { UsersPage } from '@/pages/system/UsersPage'
+import { PurchaseEvaluationsListPage, PurchaseEvaluationDetailPage } from '@/pages/pe/PurchaseEvaluationsListPage'
+import { PurchaseEvaluationCreatePage } from '@/pages/pe/PurchaseEvaluationCreatePage'
 
 function App() {
   return (
@@ -47,6 +49,9 @@ function App() {
             <Route path="/contracts" element={<ContractsListPage />} />
             <Route path="/contracts/new" element={<ContractCreatePage />} />
             <Route path="/contracts/:id" element={<ContractDetailPage />} />
+            <Route path="/purchase-evaluations" element={<PurchaseEvaluationsListPage />} />
+            <Route path="/purchase-evaluations/new" element={<PurchaseEvaluationCreatePage />} />
+            <Route path="/purchase-evaluations/:id" element={<PurchaseEvaluationDetailPage />} />
             <Route path="/reports" element={<ReportsPage />} />
             <Route path="/" element={<Navigate to="/dashboard" replace />} />
             <Route

fe-admin/src/components/Layout.tsx

@@ -44,6 +44,8 @@ function resolvePath(key: string): string | null {
     CatalogMaterials: '/master/catalogs/materials',
     CatalogServices: '/master/catalogs/services',
     CatalogWorkItems: '/master/catalogs/work-items',
+    PurchaseEvaluations: '/purchase-evaluations',
+    PeWorkflows: '/system/pe-workflows',
   }
   if (staticMap[key]) return staticMap[key]
 
@@ -64,6 +66,24 @@ function resolvePath(key: string): string | null {
     if (TYPE_CODE_TO_INT[code]) return `/system/workflows/${code}`
   }
 
+  // Pe_<Code>_<Action> cho module Duyệt NCC
+  const peMatch = key.match(/^Pe_([^_]+)_(List|Create|Pending)$/)
+  if (peMatch) {
+    const [, code, action] = peMatch
+    const PE_CODE_TO_INT: Record<string, number> = { DuyetNcc: 1, DuyetNccPhuongAn: 2 }
+    const typeInt = PE_CODE_TO_INT[code]
+    if (!typeInt) return null
+    if (action === 'List') return `/purchase-evaluations?type=${typeInt}`
+    if (action === 'Create') return `/purchase-evaluations/new?type=${typeInt}`
+    if (action === 'Pending') return `/purchase-evaluations?type=${typeInt}&pendingMe=1`
+  }
+  // PE workflow admin leaf: PeWf_<Code> → /system/pe-workflows/<code>
+  const peWfMatch = key.match(/^PeWf_(.+)$/)
+  if (peWfMatch) {
+    const code = peWfMatch[1]
+    if (code === 'DuyetNcc' || code === 'DuyetNccPhuongAn') return `/system/pe-workflows/${code}`
+  }
+
   return null
 }
 

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

@@ -0,0 +1,703 @@
+// Detail tabs cho 1 phiếu Duyệt NCC: Thông tin / NCC / Hạng mục + Báo giá /
+// Duyệt / Lịch sử. Inline action dialog để add NCC, add Detail, upsert Quote,
+// select winner.
+import { useState } from 'react'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { useNavigate } from 'react-router-dom'
+import { toast } from 'sonner'
+import { Check, Pencil, Plus, Trash2 } from 'lucide-react'
+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 { api } from '@/lib/api'
+import { getErrorMessage } from '@/lib/apiError'
+import { cn } from '@/lib/cn'
+import {
+  PurchaseEvaluationPhase,
+  PurchaseEvaluationPhaseColor,
+  PurchaseEvaluationPhaseLabel,
+  PurchaseEvaluationTypeLabel,
+  type PeChangelog,
+  type PeDetailBundle,
+  type PeDetailRow,
+  type PeQuote,
+  type PeSupplier,
+} from '@/types/purchaseEvaluation'
+import type { Supplier } from '@/types/master'
+
+type TabKey = 'info' | 'suppliers' | 'items' | 'approvals' | 'history'
+
+const fmtMoney = (v: number) => v.toLocaleString('vi-VN')
+
+export function PeDetailTabs({
+  evaluation,
+  onBack,
+  onDelete,
+}: {
+  evaluation: PeDetailBundle
+  onBack: () => void
+  onDelete: () => void
+}) {
+  const [tab, setTab] = useState<TabKey>('info')
+  const navigate = useNavigate()
+  const isDraft = evaluation.phase === PurchaseEvaluationPhase.DangSoanThao
+
+  return (
+    <div className="rounded-lg border border-slate-200 bg-white shadow-sm">
+      <div className="flex flex-wrap items-center justify-between gap-2 border-b border-slate-200 px-5 py-3">
+        <div>
+          <div className="flex items-center gap-2">
+            <h2 className="text-base font-semibold text-slate-900">{evaluation.tenGoiThau}</h2>
+            <span
+              className={cn(
+                'rounded px-1.5 py-0.5 text-[11px] font-medium',
+                PurchaseEvaluationPhaseColor[evaluation.phase],
+              )}
+            >
+              {PurchaseEvaluationPhaseLabel[evaluation.phase]}
+            </span>
+          </div>
+          <div className="mt-0.5 flex flex-wrap items-center gap-2 text-[12px] text-slate-500">
+            <span className="font-mono">{evaluation.maPhieu ?? '—'}</span>
+            <span>·</span>
+            <span>{PurchaseEvaluationTypeLabel[evaluation.type]}</span>
+            <span>·</span>
+            <span>{evaluation.projectName}</span>
+            {evaluation.drafterName && <><span>·</span><span>Soạn: {evaluation.drafterName}</span></>}
+          </div>
+        </div>
+        <div className="flex gap-2">
+          {isDraft && (
+            <>
+              <Button variant="ghost" onClick={() => navigate(`/purchase-evaluations/new?id=${evaluation.id}`)} className="gap-1.5 text-xs">
+                <Pencil className="h-3.5 w-3.5" /> Sửa header
+              </Button>
+              <Button variant="danger" onClick={onDelete} className="gap-1.5 text-xs">
+                <Trash2 className="h-3.5 w-3.5" /> Xóa
+              </Button>
+            </>
+          )}
+          <Button variant="ghost" onClick={onBack} className="text-xs">← Đóng</Button>
+        </div>
+      </div>
+
+      <nav className="flex gap-1 border-b border-slate-200 px-3 pt-2">
+        {(
+          [
+            ['info', 'Thông tin'],
+            ['suppliers', `NCC (${evaluation.suppliers.length})`],
+            ['items', `Hạng mục (${evaluation.details.length})`],
+            ['approvals', `Duyệt (${evaluation.approvals.length})`],
+            ['history', 'Lịch sử'],
+          ] as const
+        ).map(([k, lbl]) => (
+          <button
+            key={k}
+            onClick={() => setTab(k)}
+            className={cn(
+              'rounded-t-md border-b-2 px-3 py-1.5 text-xs font-medium transition',
+              tab === k
+                ? 'border-brand-500 text-brand-700'
+                : 'border-transparent text-slate-500 hover:text-slate-700',
+            )}
+          >
+            {lbl}
+          </button>
+        ))}
+      </nav>
+
+      <div className="p-5">
+        {tab === 'info' && <InfoTab ev={evaluation} />}
+        {tab === 'suppliers' && <SuppliersTab ev={evaluation} />}
+        {tab === 'items' && <ItemsTab ev={evaluation} />}
+        {tab === 'approvals' && <ApprovalsTab ev={evaluation} />}
+        {tab === 'history' && <HistoryTab ev={evaluation} />}
+      </div>
+    </div>
+  )
+}
+
+// ===== Tab: Thông tin =====
+function InfoTab({ ev }: { ev: PeDetailBundle }) {
+  const canCreateContract = ev.phase === PurchaseEvaluationPhase.DaDuyet && !ev.contractId && ev.selectedSupplierId
+  const [createOpen, setCreateOpen] = useState(false)
+  return (
+    <div className="space-y-4">
+      <dl className="grid grid-cols-2 gap-x-6 gap-y-3 text-sm">
+        <Field label="Tên gói thầu" value={ev.tenGoiThau} />
+        <Field label="Dự án" value={ev.projectName} />
+        <Field label="Địa điểm" value={ev.diaDiem ?? '—'} />
+        <Field label="Mô tả" value={ev.moTa ?? '—'} />
+        <Field label="NCC được chọn" value={ev.selectedSupplierName ?? '—'} />
+        <Field label="Điều khoản thanh toán" value={ev.paymentTerms ?? '—'} />
+        {ev.contractId && (
+          <Field label="HĐ kế thừa" value={<a href={`/contracts/${ev.contractId}`} className="text-brand-600 hover:underline">✓ Xem HĐ</a>} />
+        )}
+      </dl>
+      {canCreateContract && (
+        <div className="rounded border border-emerald-200 bg-emerald-50 p-3">
+          <div className="flex items-center justify-between gap-3">
+            <div className="text-sm text-emerald-800">
+              ✓ Phiếu đã duyệt. Bấm để tạo HĐ mới kế thừa NCC + hạng mục.
+            </div>
+            <Button onClick={() => setCreateOpen(true)} className="gap-1.5 text-xs">
+              <Plus className="h-3.5 w-3.5" /> Tạo HĐ từ phiếu
+            </Button>
+          </div>
+        </div>
+      )}
+      {createOpen && <CreateContractDialog evaluation={ev} onClose={() => setCreateOpen(false)} />}
+    </div>
+  )
+}
+
+function CreateContractDialog({ evaluation, onClose }: { evaluation: PeDetailBundle; onClose: () => void }) {
+  const navigate = useNavigate()
+  const [form, setForm] = useState({
+    contractType: 1,
+    tenHopDong: evaluation.tenGoiThau,
+    bypassProcurementAndCCM: false,
+  })
+  const mut = useMutation({
+    mutationFn: async () =>
+      api.post<{ contractId: string }>(`/purchase-evaluations/${evaluation.id}/create-contract`, form),
+    onSuccess: res => {
+      toast.success('Đã tạo HĐ từ phiếu.')
+      navigate(`/contracts/${res.data.contractId}`)
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  const typeOptions = [
+    [1, 'HĐ Thầu phụ'],
+    [2, 'HĐ Giao khoán'],
+    [3, 'HĐ Nhà cung cấp'],
+    [4, 'HĐ Dịch vụ'],
+    [5, 'HĐ Mua bán'],
+    [6, 'HĐ Nguyên tắc NCC'],
+    [7, 'HĐ Nguyên tắc DV'],
+  ] as const
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title="Tạo HĐ từ phiếu Duyệt NCC"
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>Tạo</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <p className="text-sm text-slate-500">
+          NCC: <strong>{evaluation.selectedSupplierName}</strong> · Dự án: {evaluation.projectName}
+        </p>
+        <div>
+          <Label>Loại HĐ</Label>
+          <Select value={form.contractType} onChange={e => setForm({ ...form, contractType: Number(e.target.value) })}>
+            {typeOptions.map(([v, lbl]) => <option key={v} value={v}>{lbl}</option>)}
+          </Select>
+        </div>
+        <div>
+          <Label>Tên HĐ</Label>
+          <Input value={form.tenHopDong} onChange={e => setForm({ ...form, tenHopDong: e.target.value })} />
+        </div>
+        <label className="flex items-center gap-2 text-sm">
+          <input
+            type="checkbox"
+            checked={form.bypassProcurementAndCCM}
+            onChange={e => setForm({ ...form, bypassProcurementAndCCM: e.target.checked })}
+          />
+          Bypass CCM (áp dụng HĐ với Chủ đầu tư)
+        </label>
+      </div>
+    </Dialog>
+  )
+}
+
+function Field({ label, value }: { label: string; value: React.ReactNode }) {
+  return (
+    <div>
+      <dt className="text-[11px] uppercase tracking-wide text-slate-400">{label}</dt>
+      <dd className="mt-0.5 text-slate-800">{value}</dd>
+    </div>
+  )
+}
+
+// ===== Tab: NCC =====
+function SuppliersTab({ ev }: { ev: PeDetailBundle }) {
+  const qc = useQueryClient()
+  const [open, setOpen] = useState(false)
+  const [editRow, setEditRow] = useState<PeSupplier | null>(null)
+
+  const remove = useMutation({
+    mutationFn: async (rowId: string) => api.delete(`/purchase-evaluations/${ev.id}/suppliers/${rowId}`),
+    onSuccess: () => { toast.success('Đã xóa NCC.'); qc.invalidateQueries({ queryKey: ['pe-detail', ev.id] }) },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  const setWinner = useMutation({
+    mutationFn: async (supplierId: string) =>
+      api.post(`/purchase-evaluations/${ev.id}/select-winner`, { supplierId }),
+    onSuccess: () => { toast.success('Đã chọn NCC thắng.'); qc.invalidateQueries({ queryKey: ['pe-detail', ev.id] }) },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <div>
+      <div className="mb-3 flex justify-end">
+        <Button onClick={() => setOpen(true)} className="gap-1.5 text-xs">
+          <Plus className="h-3.5 w-3.5" /> Thêm NCC
+        </Button>
+      </div>
+      {ev.suppliers.length === 0 ? (
+        <p className="text-sm text-slate-500">Chưa có NCC. Thêm NCC để bắt đầu so sánh giá.</p>
+      ) : (
+        <div className="overflow-x-auto">
+          <table className="min-w-full text-sm">
+            <thead className="bg-slate-50 text-xs uppercase text-slate-500">
+              <tr>
+                <th className="px-3 py-2 text-left">NCC</th>
+                <th className="px-3 py-2 text-left">Hiển thị</th>
+                <th className="px-3 py-2 text-left">Liên hệ</th>
+                <th className="px-3 py-2 text-left">Điều khoản TT</th>
+                <th className="px-3 py-2 text-left">Ghi chú</th>
+                <th className="px-3 py-2"></th>
+              </tr>
+            </thead>
+            <tbody className="divide-y divide-slate-100">
+              {ev.suppliers.map(s => (
+                <tr key={s.id} className={cn(ev.selectedSupplierId === s.supplierId && 'bg-emerald-50')}>
+                  <td className="px-3 py-2 font-medium text-slate-900">{s.supplierName}</td>
+                  <td className="px-3 py-2">{s.displayName ?? '—'}</td>
+                  <td className="px-3 py-2 text-[12px] text-slate-600">
+                    {s.contactName && <div>{s.contactName}</div>}
+                    {s.contactPhone && <div>{s.contactPhone}</div>}
+                    {s.contactEmail && <div className="truncate">{s.contactEmail}</div>}
+                  </td>
+                  <td className="px-3 py-2">{s.paymentTermText ?? '—'}</td>
+                  <td className="px-3 py-2 text-[12px] text-slate-600">{s.note ?? '—'}</td>
+                  <td className="px-3 py-2">
+                    <div className="flex justify-end gap-1">
+                      <button
+                        onClick={() => setWinner.mutate(s.supplierId)}
+                        className={cn(
+                          'rounded px-1.5 py-0.5 text-[11px]',
+                          ev.selectedSupplierId === s.supplierId
+                            ? 'bg-emerald-100 text-emerald-700'
+                            : 'text-slate-500 hover:bg-emerald-50 hover:text-emerald-700',
+                        )}
+                        title="Chọn NCC thắng"
+                      >
+                        <Check className="h-3.5 w-3.5" />
+                      </button>
+                      <button
+                        onClick={() => setEditRow(s)}
+                        className="rounded px-1.5 py-0.5 text-slate-500 hover:bg-slate-100"
+                        title="Sửa"
+                      >
+                        <Pencil className="h-3.5 w-3.5" />
+                      </button>
+                      <button
+                        onClick={() => { if (confirm('Xóa NCC này khỏi phiếu?')) remove.mutate(s.id) }}
+                        className="rounded px-1.5 py-0.5 text-red-500 hover:bg-red-50"
+                        title="Xóa"
+                      >
+                        <Trash2 className="h-3.5 w-3.5" />
+                      </button>
+                    </div>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+
+      {open && <AddSupplierDialog evaluationId={ev.id} onClose={() => setOpen(false)} />}
+      {editRow && <EditSupplierDialog evaluationId={ev.id} row={editRow} onClose={() => setEditRow(null)} />}
+    </div>
+  )
+}
+
+function AddSupplierDialog({ evaluationId, onClose }: { evaluationId: string; onClose: () => void }) {
+  const qc = useQueryClient()
+  const suppliers = useQuery({
+    queryKey: ['all-suppliers'],
+    queryFn: async () => (await api.get<{ items: Supplier[] }>('/suppliers', { params: { pageSize: 1000 } })).data.items,
+  })
+  const [form, setForm] = useState({
+    supplierId: '',
+    displayName: '',
+    contactName: '',
+    contactEmail: '',
+    contactPhone: '',
+    paymentTermText: '',
+    note: '',
+  })
+  const mut = useMutation({
+    mutationFn: async () => api.post(`/purchase-evaluations/${evaluationId}/suppliers`, form),
+    onSuccess: () => { toast.success('Đã thêm NCC.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title="Thêm NCC vào phiếu"
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={!form.supplierId || mut.isPending}>Thêm</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <div>
+          <Label>NCC (master)</Label>
+          <Select value={form.supplierId} onChange={e => setForm({ ...form, supplierId: e.target.value })}>
+            <option value="">-- Chọn --</option>
+            {suppliers.data?.map(s => (
+              <option key={s.id} value={s.id}>{s.code} — {s.name}</option>
+            ))}
+          </Select>
+        </div>
+        <div className="grid grid-cols-2 gap-3">
+          <div><Label>Hiển thị</Label><Input value={form.displayName} onChange={e => setForm({ ...form, displayName: e.target.value })} placeholder="vd TGN-30 ngày" /></div>
+          <div><Label>Điều khoản TT</Label><Input value={form.paymentTermText} onChange={e => setForm({ ...form, paymentTermText: e.target.value })} placeholder="vd 30 ngày, 300tr" /></div>
+          <div><Label>Người liên hệ</Label><Input value={form.contactName} onChange={e => setForm({ ...form, contactName: e.target.value })} /></div>
+          <div><Label>Điện thoại</Label><Input value={form.contactPhone} onChange={e => setForm({ ...form, contactPhone: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Email</Label><Input value={form.contactEmail} onChange={e => setForm({ ...form, contactEmail: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Ghi chú</Label><Input value={form.note} onChange={e => setForm({ ...form, note: e.target.value })} placeholder="ĐÃ CHỐT SO SÁNH LẦN 1 / ĐÀM PHÁN THÊM..." /></div>
+        </div>
+      </div>
+    </Dialog>
+  )
+}
+
+function EditSupplierDialog({ evaluationId, row, onClose }: { evaluationId: string; row: PeSupplier; onClose: () => void }) {
+  const qc = useQueryClient()
+  const [form, setForm] = useState({
+    supplierId: row.supplierId,
+    displayName: row.displayName ?? '',
+    contactName: row.contactName ?? '',
+    contactEmail: row.contactEmail ?? '',
+    contactPhone: row.contactPhone ?? '',
+    paymentTermText: row.paymentTermText ?? '',
+    note: row.note ?? '',
+  })
+  const mut = useMutation({
+    mutationFn: async () => api.put(`/purchase-evaluations/${evaluationId}/suppliers/${row.id}`, form),
+    onSuccess: () => { toast.success('Đã cập nhật.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title={`Sửa NCC — ${row.supplierName}`}
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>Lưu</Button>
+      </>}
+    >
+      <div className="grid grid-cols-2 gap-3">
+        <div><Label>Hiển thị</Label><Input value={form.displayName} onChange={e => setForm({ ...form, displayName: e.target.value })} /></div>
+        <div><Label>Điều khoản TT</Label><Input value={form.paymentTermText} onChange={e => setForm({ ...form, paymentTermText: e.target.value })} /></div>
+        <div><Label>Liên hệ</Label><Input value={form.contactName} onChange={e => setForm({ ...form, contactName: e.target.value })} /></div>
+        <div><Label>Điện thoại</Label><Input value={form.contactPhone} onChange={e => setForm({ ...form, contactPhone: e.target.value })} /></div>
+        <div className="col-span-2"><Label>Email</Label><Input value={form.contactEmail} onChange={e => setForm({ ...form, contactEmail: e.target.value })} /></div>
+        <div className="col-span-2"><Label>Ghi chú</Label><Input value={form.note} onChange={e => setForm({ ...form, note: e.target.value })} /></div>
+      </div>
+    </Dialog>
+  )
+}
+
+// ===== Tab: Hạng mục + Báo giá (matrix) =====
+function ItemsTab({ ev }: { ev: PeDetailBundle }) {
+  const qc = useQueryClient()
+  const [addOpen, setAddOpen] = useState(false)
+  const [editDetail, setEditDetail] = useState<PeDetailRow | null>(null)
+  const [quoteEdit, setQuoteEdit] = useState<{ detail: PeDetailRow; supplier: PeSupplier; existing: PeQuote | null } | null>(null)
+
+  const removeDetail = useMutation({
+    mutationFn: async (id: string) => api.delete(`/purchase-evaluations/${ev.id}/details/${id}`),
+    onSuccess: () => { toast.success('Đã xóa hạng mục.'); qc.invalidateQueries({ queryKey: ['pe-detail', ev.id] }) },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  const quoteKey = (detailId: string, supplierRowId: string) =>
+    ev.details.find(d => d.id === detailId)?.quotes.find(q => q.purchaseEvaluationSupplierId === supplierRowId) ?? null
+
+  return (
+    <div>
+      <div className="mb-3 flex items-center justify-between">
+        <p className="text-xs text-slate-500">
+          {ev.suppliers.length === 0
+            ? 'Thêm NCC ở tab "NCC" trước khi nhập báo giá.'
+            : `${ev.details.length} hạng mục × ${ev.suppliers.length} NCC — click ô để nhập báo giá.`}
+        </p>
+        <Button onClick={() => setAddOpen(true)} className="gap-1.5 text-xs">
+          <Plus className="h-3.5 w-3.5" /> Thêm hạng mục
+        </Button>
+      </div>
+
+      {ev.details.length === 0 ? (
+        <p className="text-sm text-slate-500">Chưa có hạng mục.</p>
+      ) : (
+        <div className="overflow-x-auto">
+          <table className="min-w-full border border-slate-200 text-xs">
+            <thead className="bg-slate-50 text-slate-600">
+              <tr>
+                <th className="sticky left-0 z-10 border-r border-slate-200 bg-slate-50 px-2 py-2 text-left">Hạng mục</th>
+                <th className="border-r border-slate-200 px-2 py-2 text-right">KL</th>
+                <th className="border-r border-slate-200 px-2 py-2 text-right">ĐG ngân sách</th>
+                <th className="border-r border-slate-200 px-2 py-2 text-right">TT ngân sách</th>
+                {ev.suppliers.map(s => (
+                  <th key={s.id} className="border-r border-slate-200 px-2 py-2 text-right">
+                    {s.displayName ?? s.supplierName}
+                  </th>
+                ))}
+                <th className="px-2 py-2"></th>
+              </tr>
+            </thead>
+            <tbody className="divide-y divide-slate-100">
+              {ev.details.map(d => (
+                <tr key={d.id}>
+                  <td className="sticky left-0 z-10 border-r border-slate-200 bg-white px-2 py-2">
+                    <div className="font-medium text-slate-900">{d.groupCode} {d.noiDung}</div>
+                    <div className="text-[10px] text-slate-500">{d.groupName} · {d.donViTinh ?? ''}</div>
+                  </td>
+                  <td className="border-r border-slate-200 px-2 py-2 text-right font-mono">{d.khoiLuongNganSach}</td>
+                  <td className="border-r border-slate-200 px-2 py-2 text-right font-mono">{fmtMoney(d.donGiaNganSach)}</td>
+                  <td className="border-r border-slate-200 px-2 py-2 text-right font-mono">{fmtMoney(d.thanhTienNganSach)}</td>
+                  {ev.suppliers.map(s => {
+                    const q = quoteKey(d.id, s.id)
+                    return (
+                      <td
+                        key={s.id}
+                        onClick={() => setQuoteEdit({ detail: d, supplier: s, existing: q })}
+                        className={cn(
+                          'cursor-pointer border-r border-slate-200 px-2 py-2 text-right font-mono transition hover:bg-brand-50',
+                          q?.isSelected && 'bg-emerald-50 font-semibold text-emerald-700',
+                        )}
+                      >
+                        {q ? fmtMoney(q.thanhTien) : <span className="text-slate-300">—</span>}
+                      </td>
+                    )
+                  })}
+                  <td className="px-2 py-2">
+                    <div className="flex gap-1">
+                      <button onClick={() => setEditDetail(d)} className="rounded px-1 py-0.5 text-slate-500 hover:bg-slate-100">
+                        <Pencil className="h-3 w-3" />
+                      </button>
+                      <button onClick={() => { if (confirm('Xóa hạng mục?')) removeDetail.mutate(d.id) }} className="rounded px-1 py-0.5 text-red-500 hover:bg-red-50">
+                        <Trash2 className="h-3 w-3" />
+                      </button>
+                    </div>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+
+      {addOpen && <DetailDialog evaluationId={ev.id} row={null} onClose={() => setAddOpen(false)} />}
+      {editDetail && <DetailDialog evaluationId={ev.id} row={editDetail} onClose={() => setEditDetail(null)} />}
+      {quoteEdit && (
+        <QuoteDialog
+          evaluationId={ev.id}
+          detailId={quoteEdit.detail.id}
+          supplierRowId={quoteEdit.supplier.id}
+          supplierName={quoteEdit.supplier.supplierName}
+          itemName={quoteEdit.detail.noiDung}
+          khoiLuong={quoteEdit.detail.khoiLuongThiCong || quoteEdit.detail.khoiLuongNganSach}
+          existing={quoteEdit.existing}
+          onClose={() => setQuoteEdit(null)}
+        />
+      )}
+    </div>
+  )
+}
+
+function DetailDialog({ evaluationId, row, onClose }: { evaluationId: string; row: PeDetailRow | null; onClose: () => void }) {
+  const qc = useQueryClient()
+  const [form, setForm] = useState({
+    groupCode: row?.groupCode ?? 'A.I',
+    groupName: row?.groupName ?? '',
+    itemCode: row?.itemCode ?? '',
+    noiDung: row?.noiDung ?? '',
+    donViTinh: row?.donViTinh ?? '',
+    khoiLuongNganSach: row?.khoiLuongNganSach ?? 0,
+    khoiLuongThiCong: row?.khoiLuongThiCong ?? 0,
+    donGiaNganSach: row?.donGiaNganSach ?? 0,
+    thanhTienNganSach: row?.thanhTienNganSach ?? 0,
+    ghiChu: row?.ghiChu ?? '',
+  })
+  const mut = useMutation({
+    mutationFn: async () =>
+      row
+        ? api.put(`/purchase-evaluations/${evaluationId}/details/${row.id}`, form)
+        : api.post(`/purchase-evaluations/${evaluationId}/details`, form),
+    onSuccess: () => { toast.success(row ? 'Đã sửa.' : 'Đã thêm.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  const updateAndRecalc = (patch: Partial<typeof form>) => {
+    const next = { ...form, ...patch }
+    // Auto-compute ThanhTien = KL ngân sách × ĐG ngân sách
+    next.thanhTienNganSach = Number(next.khoiLuongNganSach) * Number(next.donGiaNganSach)
+    setForm(next)
+  }
+
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title={(row ? 'Sửa' : 'Thêm') + ' hạng mục'}
+      size="lg"
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>{row ? 'Lưu' : 'Thêm'}</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <div className="grid grid-cols-3 gap-3">
+          <div><Label>Nhóm (A.I/A.II...)</Label><Input value={form.groupCode} onChange={e => setForm({ ...form, groupCode: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Tên nhóm</Label><Input value={form.groupName} onChange={e => setForm({ ...form, groupName: e.target.value })} placeholder="Bê tông / Phụ gia..." /></div>
+          <div><Label>Mã (tùy chọn)</Label><Input value={form.itemCode} onChange={e => setForm({ ...form, itemCode: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Nội dung</Label><Input value={form.noiDung} onChange={e => setForm({ ...form, noiDung: e.target.value })} /></div>
+          <div><Label>ĐVT</Label><Input value={form.donViTinh} onChange={e => setForm({ ...form, donViTinh: e.target.value })} /></div>
+          <div><Label>KL ngân sách</Label><Input type="number" value={form.khoiLuongNganSach} onChange={e => updateAndRecalc({ khoiLuongNganSach: Number(e.target.value) })} /></div>
+          <div><Label>KL thi công</Label><Input type="number" value={form.khoiLuongThiCong} onChange={e => setForm({ ...form, khoiLuongThiCong: Number(e.target.value) })} /></div>
+          <div><Label>Đơn giá ngân sách</Label><Input type="number" value={form.donGiaNganSach} onChange={e => updateAndRecalc({ donGiaNganSach: Number(e.target.value) })} /></div>
+          <div className="col-span-2"><Label>Thành tiền ngân sách (auto)</Label><Input type="number" value={form.thanhTienNganSach} onChange={e => setForm({ ...form, thanhTienNganSach: Number(e.target.value) })} /></div>
+          <div className="col-span-3"><Label>Ghi chú</Label><Input value={form.ghiChu} onChange={e => setForm({ ...form, ghiChu: e.target.value })} /></div>
+        </div>
+      </div>
+    </Dialog>
+  )
+}
+
+function QuoteDialog({
+  evaluationId, detailId, supplierRowId, supplierName, itemName, khoiLuong, existing, onClose,
+}: {
+  evaluationId: string
+  detailId: string
+  supplierRowId: string
+  supplierName: string
+  itemName: string
+  khoiLuong: number
+  existing: PeQuote | null
+  onClose: () => void
+}) {
+  const qc = useQueryClient()
+  const [form, setForm] = useState({
+    bgVat: existing?.bgVat ?? 0,
+    chuaVat: existing?.chuaVat ?? 0,
+    thanhTien: existing?.thanhTien ?? 0,
+    isSelected: existing?.isSelected ?? false,
+    note: existing?.note ?? '',
+  })
+
+  const updateAndRecalc = (patch: Partial<typeof form>) => {
+    const next = { ...form, ...patch }
+    next.thanhTien = Number(next.chuaVat) * khoiLuong
+    setForm(next)
+  }
+
+  const mut = useMutation({
+    mutationFn: async () =>
+      api.post(`/purchase-evaluations/${evaluationId}/quotes`, {
+        purchaseEvaluationDetailId: detailId,
+        purchaseEvaluationSupplierId: supplierRowId,
+        ...form,
+      }),
+    onSuccess: () => { toast.success('Đã lưu báo giá.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  const del = useMutation({
+    mutationFn: async () =>
+      existing ? api.delete(`/purchase-evaluations/${evaluationId}/quotes/${existing.id}`) : Promise.resolve(),
+    onSuccess: () => { toast.success('Đã xóa báo giá.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title={`Báo giá — ${supplierName}`}
+      footer={<>
+        {existing && <Button variant="danger" onClick={() => del.mutate()} disabled={del.isPending}>Xóa</Button>}
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>Lưu</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <p className="text-sm text-slate-500">Hạng mục: <strong>{itemName}</strong> · KL {khoiLuong}</p>
+        <div className="grid grid-cols-3 gap-3">
+          <div><Label>Đơn giá chưa VAT</Label><Input type="number" value={form.chuaVat} onChange={e => updateAndRecalc({ chuaVat: Number(e.target.value) })} /></div>
+          <div><Label>Đơn giá có VAT</Label><Input type="number" value={form.bgVat} onChange={e => setForm({ ...form, bgVat: Number(e.target.value) })} /></div>
+          <div><Label>Thành tiền (auto)</Label><Input type="number" value={form.thanhTien} onChange={e => setForm({ ...form, thanhTien: Number(e.target.value) })} /></div>
+        </div>
+        <label className="flex items-center gap-2 text-sm">
+          <input type="checkbox" checked={form.isSelected} onChange={e => setForm({ ...form, isSelected: e.target.checked })} />
+          Chọn NCC này cho hạng mục
+        </label>
+        <div><Label>Ghi chú</Label><Input value={form.note} onChange={e => setForm({ ...form, note: e.target.value })} /></div>
+      </div>
+    </Dialog>
+  )
+}
+
+// ===== Tab: Duyệt =====
+function ApprovalsTab({ ev }: { ev: PeDetailBundle }) {
+  if (ev.approvals.length === 0) return <p className="text-sm text-slate-500">Chưa có bước duyệt nào.</p>
+  return (
+    <ol className="space-y-2">
+      {ev.approvals.map(a => (
+        <li key={a.id} className="rounded border border-slate-200 bg-white p-3 text-sm">
+          <div className="flex items-center justify-between">
+            <div>
+              <span className={cn('rounded px-1.5 py-0.5 text-[11px]', PurchaseEvaluationPhaseColor[a.fromPhase])}>
+                {PurchaseEvaluationPhaseLabel[a.fromPhase]}
+              </span>
+              <span className="mx-2">→</span>
+              <span className={cn('rounded px-1.5 py-0.5 text-[11px]', PurchaseEvaluationPhaseColor[a.toPhase])}>
+                {PurchaseEvaluationPhaseLabel[a.toPhase]}
+              </span>
+            </div>
+            <span className="text-xs text-slate-500">{new Date(a.approvedAt).toLocaleString('vi-VN')}</span>
+          </div>
+          <div className="mt-1 text-xs text-slate-500">
+            {a.approverName ?? 'Hệ thống'}{a.comment && ` · ${a.comment}`}
+          </div>
+        </li>
+      ))}
+    </ol>
+  )
+}
+
+// ===== Tab: Lịch sử =====
+function HistoryTab({ ev }: { ev: PeDetailBundle }) {
+  const logs = useQuery({
+    queryKey: ['pe-changelog', ev.id],
+    queryFn: async () => (await api.get<PeChangelog[]>(`/purchase-evaluations/${ev.id}/changelogs`)).data,
+  })
+  if (logs.isLoading) return <p className="text-sm text-slate-500">Đang tải…</p>
+  if (!logs.data || logs.data.length === 0) return <p className="text-sm text-slate-500">Chưa có lịch sử.</p>
+  return (
+    <ol className="space-y-1.5 text-sm">
+      {logs.data.map(l => (
+        <li key={l.id} className="border-l-2 border-slate-200 pl-3 py-1">
+          <div className="flex items-center justify-between text-xs text-slate-500">
+            <span>{l.userName ?? 'Hệ thống'}</span>
+            <span>{new Date(l.createdAt).toLocaleString('vi-VN')}</span>
+          </div>
+          <div className="text-slate-800">{l.summary}</div>
+          {l.contextNote && <div className="text-xs text-slate-500">{l.contextNote}</div>}
+        </li>
+      ))}
+    </ol>
+  )
+}

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

@@ -0,0 +1,124 @@
+// Panel 3: workflow + transition buttons. Pulls nextPhases từ BE bundle
+// (single source of truth) → render per-phase action button.
+import { useState } from 'react'
+import { useMutation, useQueryClient } from '@tanstack/react-query'
+import { toast } from 'sonner'
+import { Dialog } from '@/components/ui/Dialog'
+import { Button } from '@/components/ui/Button'
+import { Label } from '@/components/ui/Label'
+import { Textarea } from '@/components/ui/Textarea'
+import { api } from '@/lib/api'
+import { getErrorMessage } from '@/lib/apiError'
+import { cn } from '@/lib/cn'
+import {
+  PurchaseEvaluationPhase,
+  PurchaseEvaluationPhaseColor,
+  PurchaseEvaluationPhaseLabel,
+  type PeDetailBundle,
+} from '@/types/purchaseEvaluation'
+
+export function PeWorkflowPanel({ evaluation }: { evaluation: PeDetailBundle }) {
+  const [target, setTarget] = useState<number | null>(null)
+  const [comment, setComment] = useState('')
+  const qc = useQueryClient()
+
+  const transition = useMutation({
+    mutationFn: async () =>
+      api.post(`/purchase-evaluations/${evaluation.id}/transitions`, {
+        targetPhase: target,
+        decision: target === PurchaseEvaluationPhase.TuChoi ? 2 : 1,
+        comment: comment || null,
+      }),
+    onSuccess: () => {
+      toast.success('Đã chuyển phase.')
+      qc.invalidateQueries({ queryKey: ['pe-detail', evaluation.id] })
+      qc.invalidateQueries({ queryKey: ['pe-list'] })
+      setTarget(null)
+      setComment('')
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  const next = evaluation.workflow.nextPhases
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <h3 className="text-sm font-semibold text-slate-900">Quy trình</h3>
+        <p className="mt-0.5 text-[11px] text-slate-500">{evaluation.workflow.policyDescription}</p>
+      </div>
+
+      <ol className="space-y-1.5">
+        {evaluation.workflow.activePhases
+          .filter(p => p !== PurchaseEvaluationPhase.TuChoi)
+          .map(p => {
+            const isCurrent = evaluation.phase === p
+            const isPast = isPastPhase(evaluation.phase, p, evaluation.workflow.activePhases)
+            return (
+              <li key={p}>
+                <div
+                  className={cn(
+                    'flex items-center gap-2 rounded border px-2 py-1.5 text-xs',
+                    isCurrent && 'border-brand-300 bg-brand-50 font-medium',
+                    isPast && 'border-emerald-200 bg-emerald-50 text-emerald-700',
+                    !isCurrent && !isPast && 'border-slate-200 text-slate-500',
+                  )}
+                >
+                  <span className={cn('rounded px-1.5 py-0.5 text-[10px]', PurchaseEvaluationPhaseColor[p])}>
+                    {p}
+                  </span>
+                  <span className="truncate">{PurchaseEvaluationPhaseLabel[p]}</span>
+                  {isCurrent && <span className="ml-auto text-[10px] text-brand-700">● hiện tại</span>}
+                  {isPast && <span className="ml-auto text-[10px] text-emerald-600">✓</span>}
+                </div>
+              </li>
+            )
+          })}
+      </ol>
+
+      {next.length > 0 && (
+        <div>
+          <Label className="text-xs">Chuyển tiếp:</Label>
+          <div className="mt-1 flex flex-wrap gap-1.5">
+            {next.map(p => (
+              <button
+                key={p}
+                onClick={() => setTarget(p)}
+                className={cn(
+                  'rounded border px-2 py-1 text-[11px] transition',
+                  p === PurchaseEvaluationPhase.TuChoi
+                    ? 'border-red-200 text-red-700 hover:bg-red-50'
+                    : 'border-brand-300 text-brand-700 hover:bg-brand-50',
+                )}
+              >
+                → {PurchaseEvaluationPhaseLabel[p]}
+              </button>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {target !== null && (
+        <Dialog
+          open
+          onClose={() => setTarget(null)}
+          title={`Chuyển → ${PurchaseEvaluationPhaseLabel[target]}`}
+          footer={<>
+            <Button variant="ghost" onClick={() => setTarget(null)}>Hủy</Button>
+            <Button onClick={() => transition.mutate()} disabled={transition.isPending}>Xác nhận</Button>
+          </>}
+        >
+          <Label>Ghi chú (tùy chọn)</Label>
+          <Textarea value={comment} onChange={e => setComment(e.target.value)} rows={3} />
+        </Dialog>
+      )}
+    </div>
+  )
+}
+
+function isPastPhase(current: number, p: number, active: number[]): boolean {
+  const orderedIdx = active.indexOf(p)
+  const currentIdx = active.indexOf(current)
+  if (orderedIdx < 0 || currentIdx < 0) return false
+  return orderedIdx < currentIdx && p !== PurchaseEvaluationPhase.TuChoi
+}

fe-admin/src/lib/menuKeys.ts

@@ -12,6 +12,8 @@ export const MenuKeys = {
   Users: 'Users',
   Roles: 'Roles',
   Permissions: 'Permissions',
+  PurchaseEvaluations: 'PurchaseEvaluations',
+  PeWorkflows: 'PeWorkflows',
 } as const
 
 export type MenuKey = typeof MenuKeys[keyof typeof MenuKeys]

fe-admin/src/pages/pe/PurchaseEvaluationCreatePage.tsx

@@ -0,0 +1,176 @@
+// Create / edit draft phiếu Duyệt NCC (Header only — Suppliers + Details + Quotes
+// chỉnh sửa ở Detail tabs sau khi save).
+import { useEffect, useState } from 'react'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { useNavigate, useSearchParams } from 'react-router-dom'
+import { toast } from 'sonner'
+import { ClipboardCheck } from 'lucide-react'
+import { Button } from '@/components/ui/Button'
+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 {
+  PurchaseEvaluationType,
+  PurchaseEvaluationTypeLabel,
+  type PeDetailBundle,
+} from '@/types/purchaseEvaluation'
+import type { Project } from '@/types/master'
+
+export function PurchaseEvaluationCreatePage() {
+  const navigate = useNavigate()
+  const qc = useQueryClient()
+  const [sp] = useSearchParams()
+  const editId = sp.get('id')
+  const urlType = sp.get('type') ? Number(sp.get('type')) : PurchaseEvaluationType.DuyetNcc
+
+  const projects = useQuery({
+    queryKey: ['all-projects'],
+    queryFn: async () => (await api.get<{ items: Project[] }>('/projects', { params: { pageSize: 1000 } })).data.items,
+  })
+  const existing = useQuery({
+    queryKey: ['pe-detail', editId],
+    queryFn: async () => (await api.get<PeDetailBundle>(`/purchase-evaluations/${editId}`)).data,
+    enabled: !!editId,
+  })
+
+  const [form, setForm] = useState({
+    type: urlType as number,
+    tenGoiThau: '',
+    projectId: '',
+    diaDiem: '',
+    moTa: '',
+    paymentTerms: '',
+  })
+
+  useEffect(() => {
+    if (existing.data) {
+      setForm({
+        type: existing.data.type,
+        tenGoiThau: existing.data.tenGoiThau,
+        projectId: existing.data.projectId,
+        diaDiem: existing.data.diaDiem ?? '',
+        moTa: existing.data.moTa ?? '',
+        paymentTerms: existing.data.paymentTerms ?? '',
+      })
+    }
+  }, [existing.data])
+
+  const mut = useMutation({
+    mutationFn: async () => {
+      if (editId) {
+        return api.put(`/purchase-evaluations/${editId}`, {
+          id: editId,
+          tenGoiThau: form.tenGoiThau,
+          diaDiem: form.diaDiem || null,
+          moTa: form.moTa || null,
+          paymentTerms: form.paymentTerms || null,
+        })
+      }
+      return api.post<{ id: string }>('/purchase-evaluations', {
+        type: form.type,
+        tenGoiThau: form.tenGoiThau,
+        projectId: form.projectId,
+        diaDiem: form.diaDiem || null,
+        moTa: form.moTa || null,
+        paymentTerms: form.paymentTerms || null,
+      })
+    },
+    onSuccess: res => {
+      toast.success(editId ? 'Đã lưu.' : 'Đã tạo phiếu.')
+      qc.invalidateQueries({ queryKey: ['pe-list'] })
+      const id = editId ?? (res as { data: { id: string } }).data.id
+      navigate(`/purchase-evaluations?id=${id}&type=${form.type}`)
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <div className="space-y-4 p-6">
+      <header className="flex items-center gap-2">
+        <ClipboardCheck className="h-5 w-5 text-slate-500" />
+        <h1 className="text-base font-semibold tracking-tight text-slate-900">
+          {editId ? 'Sửa phiếu Duyệt NCC' : 'Tạo phiếu Duyệt NCC mới'}
+        </h1>
+      </header>
+
+      <div className="max-w-2xl space-y-4 rounded-lg border border-slate-200 bg-white p-6 shadow-sm">
+        <div>
+          <Label>Loại quy trình</Label>
+          <Select
+            value={form.type}
+            disabled={!!editId}
+            onChange={e => setForm({ ...form, type: Number(e.target.value) })}
+          >
+            {Object.values(PurchaseEvaluationType).map(t => (
+              <option key={t} value={t}>{PurchaseEvaluationTypeLabel[t]}</option>
+            ))}
+          </Select>
+        </div>
+
+        <div>
+          <Label>Tên gói thầu *</Label>
+          <Input
+            value={form.tenGoiThau}
+            onChange={e => setForm({ ...form, tenGoiThau: e.target.value })}
+            placeholder="vd Cung cấp bê tông"
+          />
+        </div>
+
+        <div>
+          <Label>Dự án *</Label>
+          <Select
+            value={form.projectId}
+            disabled={!!editId}
+            onChange={e => setForm({ ...form, projectId: e.target.value })}
+          >
+            <option value="">-- Chọn --</option>
+            {projects.data?.map(p => (
+              <option key={p.id} value={p.id}>{p.code} — {p.name}</option>
+            ))}
+          </Select>
+        </div>
+
+        <div>
+          <Label>Địa điểm</Label>
+          <Input
+            value={form.diaDiem}
+            onChange={e => setForm({ ...form, diaDiem: e.target.value })}
+            placeholder="Lô K, KCN Lộc An - Bình Sơn..."
+          />
+        </div>
+
+        <div>
+          <Label>Mô tả</Label>
+          <Textarea
+            rows={3}
+            value={form.moTa}
+            onChange={e => setForm({ ...form, moTa: e.target.value })}
+          />
+        </div>
+
+        <div>
+          <Label>Điều khoản thanh toán (JSON hoặc text)</Label>
+          <Textarea
+            rows={3}
+            value={form.paymentTerms}
+            onChange={e => setForm({ ...form, paymentTerms: e.target.value })}
+            placeholder='{"tamUng":"10%","thanhToanTam":"100% W.done","quyetToan":"Final Account","baoHanh":"5%"}'
+          />
+        </div>
+
+        <div className="flex justify-end gap-2">
+          <Button variant="ghost" onClick={() => navigate(-1)}>Hủy</Button>
+          <Button
+            onClick={() => mut.mutate()}
+            disabled={!form.tenGoiThau || !form.projectId || mut.isPending}
+          >
+            {editId ? 'Lưu' : 'Tạo phiếu'}
+          </Button>
+        </div>
+      </div>
+    </div>
+  )
+}

fe-admin/src/pages/pe/PurchaseEvaluationsListPage.tsx

@@ -0,0 +1,250 @@
+// List + Detail phiếu Duyệt NCC — 3-panel: List | Detail tabs | Workflow + history.
+// URL params: type (filter A/B), pendingMe (1=inbox), id (selected), q (search).
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { useNavigate, useSearchParams } from 'react-router-dom'
+import { toast } from 'sonner'
+import { ClipboardCheck, Plus, Search, X } from 'lucide-react'
+import { Input } from '@/components/ui/Input'
+import { Select } from '@/components/ui/Select'
+import { Button } from '@/components/ui/Button'
+import { EmptyState } from '@/components/EmptyState'
+import { SlaTimer } from '@/components/SlaTimer'
+import { api } from '@/lib/api'
+import { getErrorMessage } from '@/lib/apiError'
+import { cn } from '@/lib/cn'
+import type { Paged } from '@/types/master'
+import {
+  PurchaseEvaluationPhase,
+  PurchaseEvaluationPhaseColor,
+  PurchaseEvaluationPhaseLabel,
+  PurchaseEvaluationTypeLabel,
+  type PeDetailBundle,
+  type PeListItem,
+} from '@/types/purchaseEvaluation'
+import { PeDetailTabs } from '@/components/pe/PeDetailTabs'
+import { PeWorkflowPanel } from '@/components/pe/PeWorkflowPanel'
+
+export function PurchaseEvaluationsListPage() {
+  const navigate = useNavigate()
+  const qc = useQueryClient()
+  const [sp, setSp] = useSearchParams()
+  const typeFilter = sp.get('type') ? Number(sp.get('type')) : null
+  const pendingMe = sp.get('pendingMe') === '1'
+  const search = sp.get('q') ?? ''
+  const phase = sp.get('phase') ?? ''
+  const selectedId = sp.get('id')
+
+  const list = useQuery({
+    queryKey: ['pe-list', { typeFilter, pendingMe, search, phase }],
+    queryFn: async () => {
+      if (pendingMe) {
+        const res = await api.get<PeListItem[]>('/purchase-evaluations/inbox', {
+          params: { type: typeFilter ?? undefined },
+        })
+        return { items: res.data, total: res.data.length, page: 1, pageSize: res.data.length }
+      }
+      const res = await api.get<Paged<PeListItem>>('/purchase-evaluations', {
+        params: {
+          pageSize: 50,
+          search: search || undefined,
+          type: typeFilter ?? undefined,
+          phase: phase || undefined,
+        },
+      })
+      return res.data
+    },
+  })
+
+  const detail = useQuery({
+    queryKey: ['pe-detail', selectedId],
+    queryFn: async () => (await api.get<PeDetailBundle>(`/purchase-evaluations/${selectedId}`)).data,
+    enabled: !!selectedId,
+  })
+
+  const del = useMutation({
+    mutationFn: async (id: string) => api.delete(`/purchase-evaluations/${id}`),
+    onSuccess: () => {
+      toast.success('Đã xóa phiếu.')
+      setParam('id', null)
+      qc.invalidateQueries({ queryKey: ['pe-list'] })
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  function setParam(key: string, value: string | null) {
+    const next = new URLSearchParams(sp)
+    if (value == null || value === '') next.delete(key)
+    else next.set(key, value)
+    if (key !== 'id') next.delete('page')
+    setSp(next, { replace: key === 'q' })
+  }
+
+  function selectRow(id: string) {
+    if (typeof window !== 'undefined' && window.matchMedia('(min-width: 1024px)').matches) {
+      setParam('id', id)
+    } else {
+      navigate(`/purchase-evaluations/${id}`)
+    }
+  }
+
+  const rows = list.data?.items ?? []
+  const createHref =
+    typeFilter != null ? `/purchase-evaluations/new?type=${typeFilter}` : '/purchase-evaluations/new'
+
+  const headerTitle = typeFilter
+    ? (pendingMe ? `${PurchaseEvaluationTypeLabel[typeFilter]} — Chờ duyệt` : PurchaseEvaluationTypeLabel[typeFilter])
+    : pendingMe ? 'Duyệt NCC — Chờ tôi' : 'Quy trình Duyệt NCC'
+
+  return (
+    <div className="flex h-[calc(100vh-4rem)] flex-col">
+      <header className="flex shrink-0 flex-wrap items-center justify-between gap-3 border-b border-slate-200 bg-white px-6 py-3">
+        <div className="flex items-center gap-2">
+          <ClipboardCheck className="h-5 w-5 text-slate-500" />
+          <h1 className="text-base font-semibold tracking-tight text-slate-900">{headerTitle}</h1>
+          <span className="ml-2 rounded-full bg-slate-100 px-2 py-0.5 text-[11px] font-medium text-slate-600">
+            {list.data?.total ?? 0}
+          </span>
+        </div>
+        <Button onClick={() => navigate(createHref)} className="gap-1.5 text-xs">
+          <Plus className="h-3.5 w-3.5" /> Tạo phiếu mới
+        </Button>
+      </header>
+
+      <div className="grid flex-1 grid-cols-1 overflow-hidden lg:grid-cols-[340px_1fr_360px]">
+        {/* Panel 1: List */}
+        <aside className="flex flex-col overflow-hidden border-r border-slate-200 bg-white">
+          <div className="space-y-2 border-b border-slate-200 p-3">
+            <div className="relative">
+              <Search className="pointer-events-none absolute left-2.5 top-2.5 h-4 w-4 text-slate-400" />
+              <Input
+                value={search}
+                onChange={e => setParam('q', e.target.value)}
+                placeholder="Tìm mã / tên gói thầu / dự án…"
+                className="pl-8"
+              />
+            </div>
+            <Select value={phase} onChange={e => setParam('phase', e.target.value)}>
+              <option value="">Tất cả phase</option>
+              {Object.values(PurchaseEvaluationPhase).map(p => (
+                <option key={p} value={p}>{PurchaseEvaluationPhaseLabel[p]}</option>
+              ))}
+            </Select>
+          </div>
+
+          <div className="flex-1 overflow-y-auto">
+            {list.isLoading && (
+              <div className="space-y-2 p-3">
+                {Array.from({ length: 6 }).map((_, i) => (
+                  <div key={i} className="h-16 animate-pulse rounded-md bg-slate-100" />
+                ))}
+              </div>
+            )}
+            {!list.isLoading && rows.length === 0 && (
+              <div className="p-6">
+                <EmptyState icon={ClipboardCheck} title="Chưa có phiếu" description="Tạo phiếu mới để bắt đầu quy trình." />
+              </div>
+            )}
+            <ul className="divide-y divide-slate-100">
+              {rows.map(p => (
+                <li key={p.id}>
+                  <button
+                    onClick={() => selectRow(p.id)}
+                    className={cn(
+                      'block w-full px-3 py-2.5 text-left transition hover:bg-slate-50',
+                      selectedId === p.id && 'bg-brand-50 ring-1 ring-inset ring-brand-200',
+                    )}
+                  >
+                    <div className="flex items-start justify-between gap-2">
+                      <div className="min-w-0 flex-1">
+                        <div className="truncate text-[13px] font-medium text-slate-900">{p.tenGoiThau}</div>
+                        <div className="mt-0.5 flex items-center gap-1.5 text-[11px] text-slate-500">
+                          <span className="font-mono">{p.maPhieu ?? '—'}</span>
+                          <span>·</span>
+                          <span className="truncate">{p.projectName}</span>
+                        </div>
+                        {p.selectedSupplierName && (
+                          <div className="mt-0.5 truncate text-[11px] text-emerald-600">
+                            ✓ {p.selectedSupplierName}
+                          </div>
+                        )}
+                      </div>
+                      <span
+                        className={cn(
+                          'shrink-0 rounded px-1.5 py-0.5 text-[10px] font-medium',
+                          PurchaseEvaluationPhaseColor[p.phase],
+                        )}
+                      >
+                        {PurchaseEvaluationPhaseLabel[p.phase]}
+                      </span>
+                    </div>
+                    <div className="mt-1 flex items-center justify-between text-[11px] text-slate-500">
+                      <span className="rounded bg-slate-100 px-1.5 py-0.5 text-slate-600">
+                        {PurchaseEvaluationTypeLabel[p.type]}
+                      </span>
+                      <SlaTimer deadline={p.slaDeadline} createdAt={p.createdAt} />
+                    </div>
+                    {p.contractId && (
+                      <div className="mt-1 text-[10px] text-brand-600">✓ Đã tạo HĐ</div>
+                    )}
+                  </button>
+                </li>
+              ))}
+            </ul>
+          </div>
+        </aside>
+
+        {/* Panel 2: Detail tabs */}
+        <main className="hidden overflow-y-auto bg-slate-50 p-6 lg:block">
+          {!selectedId && (
+            <EmptyState icon={ClipboardCheck} title="Chọn phiếu ở danh sách" description="Chi tiết NCC + báo giá + duyệt sẽ hiển thị ở đây." />
+          )}
+          {selectedId && detail.isLoading && <div className="text-sm text-slate-500">Đang tải…</div>}
+          {selectedId && detail.data && (
+            <PeDetailTabs
+              evaluation={detail.data}
+              onBack={() => setParam('id', null)}
+              onDelete={() => del.mutate(detail.data!.id)}
+            />
+          )}
+        </main>
+
+        {/* Panel 3: Workflow + history */}
+        <aside className="hidden overflow-y-auto border-l border-slate-200 bg-white p-4 lg:block">
+          {!selectedId && (
+            <div className="rounded-lg border border-dashed border-slate-200 p-6 text-center text-sm text-slate-400">
+              <X className="mx-auto mb-2 h-5 w-5" />
+              Quy trình duyệt sẽ hiện khi chọn phiếu.
+            </div>
+          )}
+          {selectedId && detail.data && <PeWorkflowPanel evaluation={detail.data} />}
+        </aside>
+      </div>
+    </div>
+  )
+}
+
+// Fullpage detail route cho mobile (/purchase-evaluations/:id)
+export function PurchaseEvaluationDetailPage() {
+  const navigate = useNavigate()
+  const id = location.pathname.split('/').pop()!
+  const detail = useQuery({
+    queryKey: ['pe-detail', id],
+    queryFn: async () => (await api.get<PeDetailBundle>(`/purchase-evaluations/${id}`)).data,
+  })
+  const del = useMutation({
+    mutationFn: async () => api.delete(`/purchase-evaluations/${id}`),
+    onSuccess: () => {
+      toast.success('Đã xóa.')
+      navigate('/purchase-evaluations')
+    },
+  })
+  if (detail.isLoading) return <div className="p-6 text-sm text-slate-500">Đang tải…</div>
+  if (!detail.data) return <div className="p-6 text-sm text-red-600">Không tìm thấy phiếu.</div>
+  return (
+    <div className="space-y-4 p-6">
+      <PeDetailTabs evaluation={detail.data} onBack={() => navigate('/purchase-evaluations')} onDelete={() => del.mutate()} />
+      <PeWorkflowPanel evaluation={detail.data} />
+    </div>
+  )
+}
+

fe-admin/src/types/purchaseEvaluation.ts

@@ -0,0 +1,165 @@
+// Types cho module Duyệt NCC (PurchaseEvaluation) — mirror BE Domain.
+
+export const PurchaseEvaluationType = {
+  DuyetNcc: 1,
+  DuyetNccPhuongAn: 2,
+} as const
+export type PurchaseEvaluationType = typeof PurchaseEvaluationType[keyof typeof PurchaseEvaluationType]
+
+export const PurchaseEvaluationTypeLabel: Record<number, string> = {
+  1: 'Duyệt NCC',
+  2: 'Duyệt NCC - Phương án',
+}
+
+export const PurchaseEvaluationTypeCode: Record<number, string> = {
+  1: 'DuyetNcc',
+  2: 'DuyetNccPhuongAn',
+}
+
+export const PurchaseEvaluationPhase = {
+  DangSoanThao: 1,
+  ChoPurchasing: 2,
+  ChoDuAn: 3,
+  ChoCCM: 4,
+  ChoCEODuyetPA: 5,
+  ChoCEODuyetNCC: 6,
+  DaDuyet: 7,
+  TuChoi: 99,
+} as const
+export type PurchaseEvaluationPhase = typeof PurchaseEvaluationPhase[keyof typeof PurchaseEvaluationPhase]
+
+export const PurchaseEvaluationPhaseLabel: Record<number, string> = {
+  1: 'Đang soạn thảo',
+  2: 'Chờ Purchasing',
+  3: 'Chờ Dự án',
+  4: 'Chờ CCM',
+  5: 'Chờ CEO duyệt PA',
+  6: 'Chờ CEO duyệt NCC',
+  7: 'Đã duyệt',
+  99: 'Từ chối',
+}
+
+export const PurchaseEvaluationPhaseColor: Record<number, string> = {
+  1: 'bg-slate-100 text-slate-700',
+  2: 'bg-blue-100 text-blue-700',
+  3: 'bg-orange-100 text-orange-700',
+  4: 'bg-indigo-100 text-indigo-700',
+  5: 'bg-fuchsia-100 text-fuchsia-700',
+  6: 'bg-pink-100 text-pink-700',
+  7: 'bg-emerald-100 text-emerald-700',
+  99: 'bg-red-100 text-red-700',
+}
+
+export type PeListItem = {
+  id: string
+  maPhieu: string | null
+  tenGoiThau: string
+  type: number
+  phase: number
+  projectId: string
+  projectName: string
+  selectedSupplierId: string | null
+  selectedSupplierName: string | null
+  contractId: string | null
+  slaDeadline: string | null
+  createdAt: string
+}
+
+export type PeSupplier = {
+  id: string
+  supplierId: string
+  supplierName: string
+  displayName: string | null
+  contactName: string | null
+  contactEmail: string | null
+  contactPhone: string | null
+  paymentTermText: string | null
+  note: string | null
+  order: number
+}
+
+export type PeQuote = {
+  id: string
+  purchaseEvaluationDetailId: string
+  purchaseEvaluationSupplierId: string
+  bgVat: number
+  chuaVat: number
+  thanhTien: number
+  isSelected: boolean
+  note: string | null
+}
+
+export type PeDetailRow = {
+  id: string
+  groupCode: string
+  groupName: string
+  itemCode: string | null
+  noiDung: string
+  donViTinh: string | null
+  khoiLuongNganSach: number
+  khoiLuongThiCong: number
+  donGiaNganSach: number
+  thanhTienNganSach: number
+  order: number
+  ghiChu: string | null
+  quotes: PeQuote[]
+}
+
+export type PeApproval = {
+  id: string
+  fromPhase: number
+  toPhase: number
+  approverUserId: string | null
+  approverName: string | null
+  decision: number
+  comment: string | null
+  approvedAt: string
+}
+
+export type PeWorkflowSummary = {
+  policyName: string
+  policyDescription: string
+  activePhases: number[]
+  nextPhases: number[]
+}
+
+export type PeChangelog = {
+  id: string
+  entityType: number
+  entityId: string | null
+  action: number
+  phaseAtChange: number | null
+  userId: string | null
+  userName: string | null
+  summary: string | null
+  fieldChangesJson: string | null
+  contextNote: string | null
+  createdAt: string
+}
+
+export type PeDetailBundle = {
+  id: string
+  maPhieu: string | null
+  type: number
+  phase: number
+  tenGoiThau: string
+  diaDiem: string | null
+  moTa: string | null
+  projectId: string
+  projectName: string
+  departmentId: string | null
+  departmentName: string | null
+  drafterUserId: string | null
+  drafterName: string | null
+  selectedSupplierId: string | null
+  selectedSupplierName: string | null
+  contractId: string | null
+  paymentTerms: string | null
+  slaDeadline: string | null
+  createdAt: string
+  updatedAt: string | null
+  suppliers: PeSupplier[]
+  details: PeDetailRow[]
+  approvals: PeApproval[]
+  workflow: PeWorkflowSummary
+}

fe-user/src/App.tsx

@@ -9,6 +9,8 @@ import { InboxPage } from '@/pages/InboxPage'
 import { ContractCreatePage } from '@/pages/contracts/ContractCreatePage'
 import { ContractDetailPage } from '@/pages/contracts/ContractDetailPage'
 import { MyContractsPage } from '@/pages/contracts/MyContractsPage'
+import { PurchaseEvaluationsListPage, PurchaseEvaluationDetailPage } from '@/pages/pe/PurchaseEvaluationsListPage'
+import { PurchaseEvaluationCreatePage } from '@/pages/pe/PurchaseEvaluationCreatePage'
 
 function App() {
   return (
@@ -28,6 +30,9 @@ function App() {
             <Route path="/contracts/new" element={<ContractCreatePage />} />
             <Route path="/contracts/:id" element={<ContractDetailPage />} />
             <Route path="/my-contracts" element={<MyContractsPage />} />
+            <Route path="/purchase-evaluations" element={<PurchaseEvaluationsListPage />} />
+            <Route path="/purchase-evaluations/new" element={<PurchaseEvaluationCreatePage />} />
+            <Route path="/purchase-evaluations/:id" element={<PurchaseEvaluationDetailPage />} />
             <Route path="/" element={<Navigate to="/dashboard" replace />} />
             <Route
               path="*"

fe-user/src/components/Layout.tsx

@@ -39,8 +39,9 @@ function getCtGroupCode(key: string): string | null {
 // /my-contracts (user's own drafts), Duyệt to /inbox (pending THEIR approval).
 function resolvePath(key: string): string | null {
   const staticMap: Record<string, string> = {
-    Dashboard: '/dashboard', // Tổng quan riêng — KHÔNG trùng /inbox (Hộp thư)
+    Dashboard: '/dashboard',
     Contracts: '/my-contracts',
+    PurchaseEvaluations: '/purchase-evaluations',
   }
   if (staticMap[key]) return staticMap[key]
 
@@ -53,6 +54,18 @@ function resolvePath(key: string): string | null {
     if (action === 'Create') return `/contracts/new?type=${typeInt}`
     if (action === 'Pending') return `/inbox?type=${typeInt}`
   }
+
+  // Pe_<Code>_<Action> cho module Duyệt NCC (user side)
+  const peMatch = key.match(/^Pe_([^_]+)_(List|Create|Pending)$/)
+  if (peMatch) {
+    const [, code, action] = peMatch
+    const PE_CODE_TO_INT: Record<string, number> = { DuyetNcc: 1, DuyetNccPhuongAn: 2 }
+    const typeInt = PE_CODE_TO_INT[code]
+    if (!typeInt) return null
+    if (action === 'List') return `/purchase-evaluations?type=${typeInt}`
+    if (action === 'Create') return `/purchase-evaluations/new?type=${typeInt}`
+    if (action === 'Pending') return `/purchase-evaluations?type=${typeInt}&pendingMe=1`
+  }
   return null
 }
 

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

@@ -0,0 +1,703 @@
+// Detail tabs cho 1 phiếu Duyệt NCC: Thông tin / NCC / Hạng mục + Báo giá /
+// Duyệt / Lịch sử. Inline action dialog để add NCC, add Detail, upsert Quote,
+// select winner.
+import { useState } from 'react'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { useNavigate } from 'react-router-dom'
+import { toast } from 'sonner'
+import { Check, Pencil, Plus, Trash2 } from 'lucide-react'
+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 { api } from '@/lib/api'
+import { getErrorMessage } from '@/lib/apiError'
+import { cn } from '@/lib/cn'
+import {
+  PurchaseEvaluationPhase,
+  PurchaseEvaluationPhaseColor,
+  PurchaseEvaluationPhaseLabel,
+  PurchaseEvaluationTypeLabel,
+  type PeChangelog,
+  type PeDetailBundle,
+  type PeDetailRow,
+  type PeQuote,
+  type PeSupplier,
+} from '@/types/purchaseEvaluation'
+import type { Supplier } from '@/types/master'
+
+type TabKey = 'info' | 'suppliers' | 'items' | 'approvals' | 'history'
+
+const fmtMoney = (v: number) => v.toLocaleString('vi-VN')
+
+export function PeDetailTabs({
+  evaluation,
+  onBack,
+  onDelete,
+}: {
+  evaluation: PeDetailBundle
+  onBack: () => void
+  onDelete: () => void
+}) {
+  const [tab, setTab] = useState<TabKey>('info')
+  const navigate = useNavigate()
+  const isDraft = evaluation.phase === PurchaseEvaluationPhase.DangSoanThao
+
+  return (
+    <div className="rounded-lg border border-slate-200 bg-white shadow-sm">
+      <div className="flex flex-wrap items-center justify-between gap-2 border-b border-slate-200 px-5 py-3">
+        <div>
+          <div className="flex items-center gap-2">
+            <h2 className="text-base font-semibold text-slate-900">{evaluation.tenGoiThau}</h2>
+            <span
+              className={cn(
+                'rounded px-1.5 py-0.5 text-[11px] font-medium',
+                PurchaseEvaluationPhaseColor[evaluation.phase],
+              )}
+            >
+              {PurchaseEvaluationPhaseLabel[evaluation.phase]}
+            </span>
+          </div>
+          <div className="mt-0.5 flex flex-wrap items-center gap-2 text-[12px] text-slate-500">
+            <span className="font-mono">{evaluation.maPhieu ?? '—'}</span>
+            <span>·</span>
+            <span>{PurchaseEvaluationTypeLabel[evaluation.type]}</span>
+            <span>·</span>
+            <span>{evaluation.projectName}</span>
+            {evaluation.drafterName && <><span>·</span><span>Soạn: {evaluation.drafterName}</span></>}
+          </div>
+        </div>
+        <div className="flex gap-2">
+          {isDraft && (
+            <>
+              <Button variant="ghost" onClick={() => navigate(`/purchase-evaluations/new?id=${evaluation.id}`)} className="gap-1.5 text-xs">
+                <Pencil className="h-3.5 w-3.5" /> Sửa header
+              </Button>
+              <Button variant="danger" onClick={onDelete} className="gap-1.5 text-xs">
+                <Trash2 className="h-3.5 w-3.5" /> Xóa
+              </Button>
+            </>
+          )}
+          <Button variant="ghost" onClick={onBack} className="text-xs">← Đóng</Button>
+        </div>
+      </div>
+
+      <nav className="flex gap-1 border-b border-slate-200 px-3 pt-2">
+        {(
+          [
+            ['info', 'Thông tin'],
+            ['suppliers', `NCC (${evaluation.suppliers.length})`],
+            ['items', `Hạng mục (${evaluation.details.length})`],
+            ['approvals', `Duyệt (${evaluation.approvals.length})`],
+            ['history', 'Lịch sử'],
+          ] as const
+        ).map(([k, lbl]) => (
+          <button
+            key={k}
+            onClick={() => setTab(k)}
+            className={cn(
+              'rounded-t-md border-b-2 px-3 py-1.5 text-xs font-medium transition',
+              tab === k
+                ? 'border-brand-500 text-brand-700'
+                : 'border-transparent text-slate-500 hover:text-slate-700',
+            )}
+          >
+            {lbl}
+          </button>
+        ))}
+      </nav>
+
+      <div className="p-5">
+        {tab === 'info' && <InfoTab ev={evaluation} />}
+        {tab === 'suppliers' && <SuppliersTab ev={evaluation} />}
+        {tab === 'items' && <ItemsTab ev={evaluation} />}
+        {tab === 'approvals' && <ApprovalsTab ev={evaluation} />}
+        {tab === 'history' && <HistoryTab ev={evaluation} />}
+      </div>
+    </div>
+  )
+}
+
+// ===== Tab: Thông tin =====
+function InfoTab({ ev }: { ev: PeDetailBundle }) {
+  const canCreateContract = ev.phase === PurchaseEvaluationPhase.DaDuyet && !ev.contractId && ev.selectedSupplierId
+  const [createOpen, setCreateOpen] = useState(false)
+  return (
+    <div className="space-y-4">
+      <dl className="grid grid-cols-2 gap-x-6 gap-y-3 text-sm">
+        <Field label="Tên gói thầu" value={ev.tenGoiThau} />
+        <Field label="Dự án" value={ev.projectName} />
+        <Field label="Địa điểm" value={ev.diaDiem ?? '—'} />
+        <Field label="Mô tả" value={ev.moTa ?? '—'} />
+        <Field label="NCC được chọn" value={ev.selectedSupplierName ?? '—'} />
+        <Field label="Điều khoản thanh toán" value={ev.paymentTerms ?? '—'} />
+        {ev.contractId && (
+          <Field label="HĐ kế thừa" value={<a href={`/contracts/${ev.contractId}`} className="text-brand-600 hover:underline">✓ Xem HĐ</a>} />
+        )}
+      </dl>
+      {canCreateContract && (
+        <div className="rounded border border-emerald-200 bg-emerald-50 p-3">
+          <div className="flex items-center justify-between gap-3">
+            <div className="text-sm text-emerald-800">
+              ✓ Phiếu đã duyệt. Bấm để tạo HĐ mới kế thừa NCC + hạng mục.
+            </div>
+            <Button onClick={() => setCreateOpen(true)} className="gap-1.5 text-xs">
+              <Plus className="h-3.5 w-3.5" /> Tạo HĐ từ phiếu
+            </Button>
+          </div>
+        </div>
+      )}
+      {createOpen && <CreateContractDialog evaluation={ev} onClose={() => setCreateOpen(false)} />}
+    </div>
+  )
+}
+
+function CreateContractDialog({ evaluation, onClose }: { evaluation: PeDetailBundle; onClose: () => void }) {
+  const navigate = useNavigate()
+  const [form, setForm] = useState({
+    contractType: 1,
+    tenHopDong: evaluation.tenGoiThau,
+    bypassProcurementAndCCM: false,
+  })
+  const mut = useMutation({
+    mutationFn: async () =>
+      api.post<{ contractId: string }>(`/purchase-evaluations/${evaluation.id}/create-contract`, form),
+    onSuccess: res => {
+      toast.success('Đã tạo HĐ từ phiếu.')
+      navigate(`/contracts/${res.data.contractId}`)
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  const typeOptions = [
+    [1, 'HĐ Thầu phụ'],
+    [2, 'HĐ Giao khoán'],
+    [3, 'HĐ Nhà cung cấp'],
+    [4, 'HĐ Dịch vụ'],
+    [5, 'HĐ Mua bán'],
+    [6, 'HĐ Nguyên tắc NCC'],
+    [7, 'HĐ Nguyên tắc DV'],
+  ] as const
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title="Tạo HĐ từ phiếu Duyệt NCC"
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>Tạo</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <p className="text-sm text-slate-500">
+          NCC: <strong>{evaluation.selectedSupplierName}</strong> · Dự án: {evaluation.projectName}
+        </p>
+        <div>
+          <Label>Loại HĐ</Label>
+          <Select value={form.contractType} onChange={e => setForm({ ...form, contractType: Number(e.target.value) })}>
+            {typeOptions.map(([v, lbl]) => <option key={v} value={v}>{lbl}</option>)}
+          </Select>
+        </div>
+        <div>
+          <Label>Tên HĐ</Label>
+          <Input value={form.tenHopDong} onChange={e => setForm({ ...form, tenHopDong: e.target.value })} />
+        </div>
+        <label className="flex items-center gap-2 text-sm">
+          <input
+            type="checkbox"
+            checked={form.bypassProcurementAndCCM}
+            onChange={e => setForm({ ...form, bypassProcurementAndCCM: e.target.checked })}
+          />
+          Bypass CCM (áp dụng HĐ với Chủ đầu tư)
+        </label>
+      </div>
+    </Dialog>
+  )
+}
+
+function Field({ label, value }: { label: string; value: React.ReactNode }) {
+  return (
+    <div>
+      <dt className="text-[11px] uppercase tracking-wide text-slate-400">{label}</dt>
+      <dd className="mt-0.5 text-slate-800">{value}</dd>
+    </div>
+  )
+}
+
+// ===== Tab: NCC =====
+function SuppliersTab({ ev }: { ev: PeDetailBundle }) {
+  const qc = useQueryClient()
+  const [open, setOpen] = useState(false)
+  const [editRow, setEditRow] = useState<PeSupplier | null>(null)
+
+  const remove = useMutation({
+    mutationFn: async (rowId: string) => api.delete(`/purchase-evaluations/${ev.id}/suppliers/${rowId}`),
+    onSuccess: () => { toast.success('Đã xóa NCC.'); qc.invalidateQueries({ queryKey: ['pe-detail', ev.id] }) },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  const setWinner = useMutation({
+    mutationFn: async (supplierId: string) =>
+      api.post(`/purchase-evaluations/${ev.id}/select-winner`, { supplierId }),
+    onSuccess: () => { toast.success('Đã chọn NCC thắng.'); qc.invalidateQueries({ queryKey: ['pe-detail', ev.id] }) },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <div>
+      <div className="mb-3 flex justify-end">
+        <Button onClick={() => setOpen(true)} className="gap-1.5 text-xs">
+          <Plus className="h-3.5 w-3.5" /> Thêm NCC
+        </Button>
+      </div>
+      {ev.suppliers.length === 0 ? (
+        <p className="text-sm text-slate-500">Chưa có NCC. Thêm NCC để bắt đầu so sánh giá.</p>
+      ) : (
+        <div className="overflow-x-auto">
+          <table className="min-w-full text-sm">
+            <thead className="bg-slate-50 text-xs uppercase text-slate-500">
+              <tr>
+                <th className="px-3 py-2 text-left">NCC</th>
+                <th className="px-3 py-2 text-left">Hiển thị</th>
+                <th className="px-3 py-2 text-left">Liên hệ</th>
+                <th className="px-3 py-2 text-left">Điều khoản TT</th>
+                <th className="px-3 py-2 text-left">Ghi chú</th>
+                <th className="px-3 py-2"></th>
+              </tr>
+            </thead>
+            <tbody className="divide-y divide-slate-100">
+              {ev.suppliers.map(s => (
+                <tr key={s.id} className={cn(ev.selectedSupplierId === s.supplierId && 'bg-emerald-50')}>
+                  <td className="px-3 py-2 font-medium text-slate-900">{s.supplierName}</td>
+                  <td className="px-3 py-2">{s.displayName ?? '—'}</td>
+                  <td className="px-3 py-2 text-[12px] text-slate-600">
+                    {s.contactName && <div>{s.contactName}</div>}
+                    {s.contactPhone && <div>{s.contactPhone}</div>}
+                    {s.contactEmail && <div className="truncate">{s.contactEmail}</div>}
+                  </td>
+                  <td className="px-3 py-2">{s.paymentTermText ?? '—'}</td>
+                  <td className="px-3 py-2 text-[12px] text-slate-600">{s.note ?? '—'}</td>
+                  <td className="px-3 py-2">
+                    <div className="flex justify-end gap-1">
+                      <button
+                        onClick={() => setWinner.mutate(s.supplierId)}
+                        className={cn(
+                          'rounded px-1.5 py-0.5 text-[11px]',
+                          ev.selectedSupplierId === s.supplierId
+                            ? 'bg-emerald-100 text-emerald-700'
+                            : 'text-slate-500 hover:bg-emerald-50 hover:text-emerald-700',
+                        )}
+                        title="Chọn NCC thắng"
+                      >
+                        <Check className="h-3.5 w-3.5" />
+                      </button>
+                      <button
+                        onClick={() => setEditRow(s)}
+                        className="rounded px-1.5 py-0.5 text-slate-500 hover:bg-slate-100"
+                        title="Sửa"
+                      >
+                        <Pencil className="h-3.5 w-3.5" />
+                      </button>
+                      <button
+                        onClick={() => { if (confirm('Xóa NCC này khỏi phiếu?')) remove.mutate(s.id) }}
+                        className="rounded px-1.5 py-0.5 text-red-500 hover:bg-red-50"
+                        title="Xóa"
+                      >
+                        <Trash2 className="h-3.5 w-3.5" />
+                      </button>
+                    </div>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+
+      {open && <AddSupplierDialog evaluationId={ev.id} onClose={() => setOpen(false)} />}
+      {editRow && <EditSupplierDialog evaluationId={ev.id} row={editRow} onClose={() => setEditRow(null)} />}
+    </div>
+  )
+}
+
+function AddSupplierDialog({ evaluationId, onClose }: { evaluationId: string; onClose: () => void }) {
+  const qc = useQueryClient()
+  const suppliers = useQuery({
+    queryKey: ['all-suppliers'],
+    queryFn: async () => (await api.get<{ items: Supplier[] }>('/suppliers', { params: { pageSize: 1000 } })).data.items,
+  })
+  const [form, setForm] = useState({
+    supplierId: '',
+    displayName: '',
+    contactName: '',
+    contactEmail: '',
+    contactPhone: '',
+    paymentTermText: '',
+    note: '',
+  })
+  const mut = useMutation({
+    mutationFn: async () => api.post(`/purchase-evaluations/${evaluationId}/suppliers`, form),
+    onSuccess: () => { toast.success('Đã thêm NCC.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title="Thêm NCC vào phiếu"
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={!form.supplierId || mut.isPending}>Thêm</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <div>
+          <Label>NCC (master)</Label>
+          <Select value={form.supplierId} onChange={e => setForm({ ...form, supplierId: e.target.value })}>
+            <option value="">-- Chọn --</option>
+            {suppliers.data?.map(s => (
+              <option key={s.id} value={s.id}>{s.code} — {s.name}</option>
+            ))}
+          </Select>
+        </div>
+        <div className="grid grid-cols-2 gap-3">
+          <div><Label>Hiển thị</Label><Input value={form.displayName} onChange={e => setForm({ ...form, displayName: e.target.value })} placeholder="vd TGN-30 ngày" /></div>
+          <div><Label>Điều khoản TT</Label><Input value={form.paymentTermText} onChange={e => setForm({ ...form, paymentTermText: e.target.value })} placeholder="vd 30 ngày, 300tr" /></div>
+          <div><Label>Người liên hệ</Label><Input value={form.contactName} onChange={e => setForm({ ...form, contactName: e.target.value })} /></div>
+          <div><Label>Điện thoại</Label><Input value={form.contactPhone} onChange={e => setForm({ ...form, contactPhone: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Email</Label><Input value={form.contactEmail} onChange={e => setForm({ ...form, contactEmail: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Ghi chú</Label><Input value={form.note} onChange={e => setForm({ ...form, note: e.target.value })} placeholder="ĐÃ CHỐT SO SÁNH LẦN 1 / ĐÀM PHÁN THÊM..." /></div>
+        </div>
+      </div>
+    </Dialog>
+  )
+}
+
+function EditSupplierDialog({ evaluationId, row, onClose }: { evaluationId: string; row: PeSupplier; onClose: () => void }) {
+  const qc = useQueryClient()
+  const [form, setForm] = useState({
+    supplierId: row.supplierId,
+    displayName: row.displayName ?? '',
+    contactName: row.contactName ?? '',
+    contactEmail: row.contactEmail ?? '',
+    contactPhone: row.contactPhone ?? '',
+    paymentTermText: row.paymentTermText ?? '',
+    note: row.note ?? '',
+  })
+  const mut = useMutation({
+    mutationFn: async () => api.put(`/purchase-evaluations/${evaluationId}/suppliers/${row.id}`, form),
+    onSuccess: () => { toast.success('Đã cập nhật.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title={`Sửa NCC — ${row.supplierName}`}
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>Lưu</Button>
+      </>}
+    >
+      <div className="grid grid-cols-2 gap-3">
+        <div><Label>Hiển thị</Label><Input value={form.displayName} onChange={e => setForm({ ...form, displayName: e.target.value })} /></div>
+        <div><Label>Điều khoản TT</Label><Input value={form.paymentTermText} onChange={e => setForm({ ...form, paymentTermText: e.target.value })} /></div>
+        <div><Label>Liên hệ</Label><Input value={form.contactName} onChange={e => setForm({ ...form, contactName: e.target.value })} /></div>
+        <div><Label>Điện thoại</Label><Input value={form.contactPhone} onChange={e => setForm({ ...form, contactPhone: e.target.value })} /></div>
+        <div className="col-span-2"><Label>Email</Label><Input value={form.contactEmail} onChange={e => setForm({ ...form, contactEmail: e.target.value })} /></div>
+        <div className="col-span-2"><Label>Ghi chú</Label><Input value={form.note} onChange={e => setForm({ ...form, note: e.target.value })} /></div>
+      </div>
+    </Dialog>
+  )
+}
+
+// ===== Tab: Hạng mục + Báo giá (matrix) =====
+function ItemsTab({ ev }: { ev: PeDetailBundle }) {
+  const qc = useQueryClient()
+  const [addOpen, setAddOpen] = useState(false)
+  const [editDetail, setEditDetail] = useState<PeDetailRow | null>(null)
+  const [quoteEdit, setQuoteEdit] = useState<{ detail: PeDetailRow; supplier: PeSupplier; existing: PeQuote | null } | null>(null)
+
+  const removeDetail = useMutation({
+    mutationFn: async (id: string) => api.delete(`/purchase-evaluations/${ev.id}/details/${id}`),
+    onSuccess: () => { toast.success('Đã xóa hạng mục.'); qc.invalidateQueries({ queryKey: ['pe-detail', ev.id] }) },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  const quoteKey = (detailId: string, supplierRowId: string) =>
+    ev.details.find(d => d.id === detailId)?.quotes.find(q => q.purchaseEvaluationSupplierId === supplierRowId) ?? null
+
+  return (
+    <div>
+      <div className="mb-3 flex items-center justify-between">
+        <p className="text-xs text-slate-500">
+          {ev.suppliers.length === 0
+            ? 'Thêm NCC ở tab "NCC" trước khi nhập báo giá.'
+            : `${ev.details.length} hạng mục × ${ev.suppliers.length} NCC — click ô để nhập báo giá.`}
+        </p>
+        <Button onClick={() => setAddOpen(true)} className="gap-1.5 text-xs">
+          <Plus className="h-3.5 w-3.5" /> Thêm hạng mục
+        </Button>
+      </div>
+
+      {ev.details.length === 0 ? (
+        <p className="text-sm text-slate-500">Chưa có hạng mục.</p>
+      ) : (
+        <div className="overflow-x-auto">
+          <table className="min-w-full border border-slate-200 text-xs">
+            <thead className="bg-slate-50 text-slate-600">
+              <tr>
+                <th className="sticky left-0 z-10 border-r border-slate-200 bg-slate-50 px-2 py-2 text-left">Hạng mục</th>
+                <th className="border-r border-slate-200 px-2 py-2 text-right">KL</th>
+                <th className="border-r border-slate-200 px-2 py-2 text-right">ĐG ngân sách</th>
+                <th className="border-r border-slate-200 px-2 py-2 text-right">TT ngân sách</th>
+                {ev.suppliers.map(s => (
+                  <th key={s.id} className="border-r border-slate-200 px-2 py-2 text-right">
+                    {s.displayName ?? s.supplierName}
+                  </th>
+                ))}
+                <th className="px-2 py-2"></th>
+              </tr>
+            </thead>
+            <tbody className="divide-y divide-slate-100">
+              {ev.details.map(d => (
+                <tr key={d.id}>
+                  <td className="sticky left-0 z-10 border-r border-slate-200 bg-white px-2 py-2">
+                    <div className="font-medium text-slate-900">{d.groupCode} {d.noiDung}</div>
+                    <div className="text-[10px] text-slate-500">{d.groupName} · {d.donViTinh ?? ''}</div>
+                  </td>
+                  <td className="border-r border-slate-200 px-2 py-2 text-right font-mono">{d.khoiLuongNganSach}</td>
+                  <td className="border-r border-slate-200 px-2 py-2 text-right font-mono">{fmtMoney(d.donGiaNganSach)}</td>
+                  <td className="border-r border-slate-200 px-2 py-2 text-right font-mono">{fmtMoney(d.thanhTienNganSach)}</td>
+                  {ev.suppliers.map(s => {
+                    const q = quoteKey(d.id, s.id)
+                    return (
+                      <td
+                        key={s.id}
+                        onClick={() => setQuoteEdit({ detail: d, supplier: s, existing: q })}
+                        className={cn(
+                          'cursor-pointer border-r border-slate-200 px-2 py-2 text-right font-mono transition hover:bg-brand-50',
+                          q?.isSelected && 'bg-emerald-50 font-semibold text-emerald-700',
+                        )}
+                      >
+                        {q ? fmtMoney(q.thanhTien) : <span className="text-slate-300">—</span>}
+                      </td>
+                    )
+                  })}
+                  <td className="px-2 py-2">
+                    <div className="flex gap-1">
+                      <button onClick={() => setEditDetail(d)} className="rounded px-1 py-0.5 text-slate-500 hover:bg-slate-100">
+                        <Pencil className="h-3 w-3" />
+                      </button>
+                      <button onClick={() => { if (confirm('Xóa hạng mục?')) removeDetail.mutate(d.id) }} className="rounded px-1 py-0.5 text-red-500 hover:bg-red-50">
+                        <Trash2 className="h-3 w-3" />
+                      </button>
+                    </div>
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      )}
+
+      {addOpen && <DetailDialog evaluationId={ev.id} row={null} onClose={() => setAddOpen(false)} />}
+      {editDetail && <DetailDialog evaluationId={ev.id} row={editDetail} onClose={() => setEditDetail(null)} />}
+      {quoteEdit && (
+        <QuoteDialog
+          evaluationId={ev.id}
+          detailId={quoteEdit.detail.id}
+          supplierRowId={quoteEdit.supplier.id}
+          supplierName={quoteEdit.supplier.supplierName}
+          itemName={quoteEdit.detail.noiDung}
+          khoiLuong={quoteEdit.detail.khoiLuongThiCong || quoteEdit.detail.khoiLuongNganSach}
+          existing={quoteEdit.existing}
+          onClose={() => setQuoteEdit(null)}
+        />
+      )}
+    </div>
+  )
+}
+
+function DetailDialog({ evaluationId, row, onClose }: { evaluationId: string; row: PeDetailRow | null; onClose: () => void }) {
+  const qc = useQueryClient()
+  const [form, setForm] = useState({
+    groupCode: row?.groupCode ?? 'A.I',
+    groupName: row?.groupName ?? '',
+    itemCode: row?.itemCode ?? '',
+    noiDung: row?.noiDung ?? '',
+    donViTinh: row?.donViTinh ?? '',
+    khoiLuongNganSach: row?.khoiLuongNganSach ?? 0,
+    khoiLuongThiCong: row?.khoiLuongThiCong ?? 0,
+    donGiaNganSach: row?.donGiaNganSach ?? 0,
+    thanhTienNganSach: row?.thanhTienNganSach ?? 0,
+    ghiChu: row?.ghiChu ?? '',
+  })
+  const mut = useMutation({
+    mutationFn: async () =>
+      row
+        ? api.put(`/purchase-evaluations/${evaluationId}/details/${row.id}`, form)
+        : api.post(`/purchase-evaluations/${evaluationId}/details`, form),
+    onSuccess: () => { toast.success(row ? 'Đã sửa.' : 'Đã thêm.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  const updateAndRecalc = (patch: Partial<typeof form>) => {
+    const next = { ...form, ...patch }
+    // Auto-compute ThanhTien = KL ngân sách × ĐG ngân sách
+    next.thanhTienNganSach = Number(next.khoiLuongNganSach) * Number(next.donGiaNganSach)
+    setForm(next)
+  }
+
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title={(row ? 'Sửa' : 'Thêm') + ' hạng mục'}
+      size="lg"
+      footer={<>
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>{row ? 'Lưu' : 'Thêm'}</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <div className="grid grid-cols-3 gap-3">
+          <div><Label>Nhóm (A.I/A.II...)</Label><Input value={form.groupCode} onChange={e => setForm({ ...form, groupCode: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Tên nhóm</Label><Input value={form.groupName} onChange={e => setForm({ ...form, groupName: e.target.value })} placeholder="Bê tông / Phụ gia..." /></div>
+          <div><Label>Mã (tùy chọn)</Label><Input value={form.itemCode} onChange={e => setForm({ ...form, itemCode: e.target.value })} /></div>
+          <div className="col-span-2"><Label>Nội dung</Label><Input value={form.noiDung} onChange={e => setForm({ ...form, noiDung: e.target.value })} /></div>
+          <div><Label>ĐVT</Label><Input value={form.donViTinh} onChange={e => setForm({ ...form, donViTinh: e.target.value })} /></div>
+          <div><Label>KL ngân sách</Label><Input type="number" value={form.khoiLuongNganSach} onChange={e => updateAndRecalc({ khoiLuongNganSach: Number(e.target.value) })} /></div>
+          <div><Label>KL thi công</Label><Input type="number" value={form.khoiLuongThiCong} onChange={e => setForm({ ...form, khoiLuongThiCong: Number(e.target.value) })} /></div>
+          <div><Label>Đơn giá ngân sách</Label><Input type="number" value={form.donGiaNganSach} onChange={e => updateAndRecalc({ donGiaNganSach: Number(e.target.value) })} /></div>
+          <div className="col-span-2"><Label>Thành tiền ngân sách (auto)</Label><Input type="number" value={form.thanhTienNganSach} onChange={e => setForm({ ...form, thanhTienNganSach: Number(e.target.value) })} /></div>
+          <div className="col-span-3"><Label>Ghi chú</Label><Input value={form.ghiChu} onChange={e => setForm({ ...form, ghiChu: e.target.value })} /></div>
+        </div>
+      </div>
+    </Dialog>
+  )
+}
+
+function QuoteDialog({
+  evaluationId, detailId, supplierRowId, supplierName, itemName, khoiLuong, existing, onClose,
+}: {
+  evaluationId: string
+  detailId: string
+  supplierRowId: string
+  supplierName: string
+  itemName: string
+  khoiLuong: number
+  existing: PeQuote | null
+  onClose: () => void
+}) {
+  const qc = useQueryClient()
+  const [form, setForm] = useState({
+    bgVat: existing?.bgVat ?? 0,
+    chuaVat: existing?.chuaVat ?? 0,
+    thanhTien: existing?.thanhTien ?? 0,
+    isSelected: existing?.isSelected ?? false,
+    note: existing?.note ?? '',
+  })
+
+  const updateAndRecalc = (patch: Partial<typeof form>) => {
+    const next = { ...form, ...patch }
+    next.thanhTien = Number(next.chuaVat) * khoiLuong
+    setForm(next)
+  }
+
+  const mut = useMutation({
+    mutationFn: async () =>
+      api.post(`/purchase-evaluations/${evaluationId}/quotes`, {
+        purchaseEvaluationDetailId: detailId,
+        purchaseEvaluationSupplierId: supplierRowId,
+        ...form,
+      }),
+    onSuccess: () => { toast.success('Đã lưu báo giá.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+  const del = useMutation({
+    mutationFn: async () =>
+      existing ? api.delete(`/purchase-evaluations/${evaluationId}/quotes/${existing.id}`) : Promise.resolve(),
+    onSuccess: () => { toast.success('Đã xóa báo giá.'); qc.invalidateQueries({ queryKey: ['pe-detail', evaluationId] }); onClose() },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <Dialog
+      open
+      onClose={onClose}
+      title={`Báo giá — ${supplierName}`}
+      footer={<>
+        {existing && <Button variant="danger" onClick={() => del.mutate()} disabled={del.isPending}>Xóa</Button>}
+        <Button variant="ghost" onClick={onClose}>Hủy</Button>
+        <Button onClick={() => mut.mutate()} disabled={mut.isPending}>Lưu</Button>
+      </>}
+    >
+      <div className="space-y-3">
+        <p className="text-sm text-slate-500">Hạng mục: <strong>{itemName}</strong> · KL {khoiLuong}</p>
+        <div className="grid grid-cols-3 gap-3">
+          <div><Label>Đơn giá chưa VAT</Label><Input type="number" value={form.chuaVat} onChange={e => updateAndRecalc({ chuaVat: Number(e.target.value) })} /></div>
+          <div><Label>Đơn giá có VAT</Label><Input type="number" value={form.bgVat} onChange={e => setForm({ ...form, bgVat: Number(e.target.value) })} /></div>
+          <div><Label>Thành tiền (auto)</Label><Input type="number" value={form.thanhTien} onChange={e => setForm({ ...form, thanhTien: Number(e.target.value) })} /></div>
+        </div>
+        <label className="flex items-center gap-2 text-sm">
+          <input type="checkbox" checked={form.isSelected} onChange={e => setForm({ ...form, isSelected: e.target.checked })} />
+          Chọn NCC này cho hạng mục
+        </label>
+        <div><Label>Ghi chú</Label><Input value={form.note} onChange={e => setForm({ ...form, note: e.target.value })} /></div>
+      </div>
+    </Dialog>
+  )
+}
+
+// ===== Tab: Duyệt =====
+function ApprovalsTab({ ev }: { ev: PeDetailBundle }) {
+  if (ev.approvals.length === 0) return <p className="text-sm text-slate-500">Chưa có bước duyệt nào.</p>
+  return (
+    <ol className="space-y-2">
+      {ev.approvals.map(a => (
+        <li key={a.id} className="rounded border border-slate-200 bg-white p-3 text-sm">
+          <div className="flex items-center justify-between">
+            <div>
+              <span className={cn('rounded px-1.5 py-0.5 text-[11px]', PurchaseEvaluationPhaseColor[a.fromPhase])}>
+                {PurchaseEvaluationPhaseLabel[a.fromPhase]}
+              </span>
+              <span className="mx-2">→</span>
+              <span className={cn('rounded px-1.5 py-0.5 text-[11px]', PurchaseEvaluationPhaseColor[a.toPhase])}>
+                {PurchaseEvaluationPhaseLabel[a.toPhase]}
+              </span>
+            </div>
+            <span className="text-xs text-slate-500">{new Date(a.approvedAt).toLocaleString('vi-VN')}</span>
+          </div>
+          <div className="mt-1 text-xs text-slate-500">
+            {a.approverName ?? 'Hệ thống'}{a.comment && ` · ${a.comment}`}
+          </div>
+        </li>
+      ))}
+    </ol>
+  )
+}
+
+// ===== Tab: Lịch sử =====
+function HistoryTab({ ev }: { ev: PeDetailBundle }) {
+  const logs = useQuery({
+    queryKey: ['pe-changelog', ev.id],
+    queryFn: async () => (await api.get<PeChangelog[]>(`/purchase-evaluations/${ev.id}/changelogs`)).data,
+  })
+  if (logs.isLoading) return <p className="text-sm text-slate-500">Đang tải…</p>
+  if (!logs.data || logs.data.length === 0) return <p className="text-sm text-slate-500">Chưa có lịch sử.</p>
+  return (
+    <ol className="space-y-1.5 text-sm">
+      {logs.data.map(l => (
+        <li key={l.id} className="border-l-2 border-slate-200 pl-3 py-1">
+          <div className="flex items-center justify-between text-xs text-slate-500">
+            <span>{l.userName ?? 'Hệ thống'}</span>
+            <span>{new Date(l.createdAt).toLocaleString('vi-VN')}</span>
+          </div>
+          <div className="text-slate-800">{l.summary}</div>
+          {l.contextNote && <div className="text-xs text-slate-500">{l.contextNote}</div>}
+        </li>
+      ))}
+    </ol>
+  )
+}

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

@@ -0,0 +1,124 @@
+// Panel 3: workflow + transition buttons. Pulls nextPhases từ BE bundle
+// (single source of truth) → render per-phase action button.
+import { useState } from 'react'
+import { useMutation, useQueryClient } from '@tanstack/react-query'
+import { toast } from 'sonner'
+import { Dialog } from '@/components/ui/Dialog'
+import { Button } from '@/components/ui/Button'
+import { Label } from '@/components/ui/Label'
+import { Textarea } from '@/components/ui/Textarea'
+import { api } from '@/lib/api'
+import { getErrorMessage } from '@/lib/apiError'
+import { cn } from '@/lib/cn'
+import {
+  PurchaseEvaluationPhase,
+  PurchaseEvaluationPhaseColor,
+  PurchaseEvaluationPhaseLabel,
+  type PeDetailBundle,
+} from '@/types/purchaseEvaluation'
+
+export function PeWorkflowPanel({ evaluation }: { evaluation: PeDetailBundle }) {
+  const [target, setTarget] = useState<number | null>(null)
+  const [comment, setComment] = useState('')
+  const qc = useQueryClient()
+
+  const transition = useMutation({
+    mutationFn: async () =>
+      api.post(`/purchase-evaluations/${evaluation.id}/transitions`, {
+        targetPhase: target,
+        decision: target === PurchaseEvaluationPhase.TuChoi ? 2 : 1,
+        comment: comment || null,
+      }),
+    onSuccess: () => {
+      toast.success('Đã chuyển phase.')
+      qc.invalidateQueries({ queryKey: ['pe-detail', evaluation.id] })
+      qc.invalidateQueries({ queryKey: ['pe-list'] })
+      setTarget(null)
+      setComment('')
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  const next = evaluation.workflow.nextPhases
+
+  return (
+    <div className="space-y-4">
+      <div>
+        <h3 className="text-sm font-semibold text-slate-900">Quy trình</h3>
+        <p className="mt-0.5 text-[11px] text-slate-500">{evaluation.workflow.policyDescription}</p>
+      </div>
+
+      <ol className="space-y-1.5">
+        {evaluation.workflow.activePhases
+          .filter(p => p !== PurchaseEvaluationPhase.TuChoi)
+          .map(p => {
+            const isCurrent = evaluation.phase === p
+            const isPast = isPastPhase(evaluation.phase, p, evaluation.workflow.activePhases)
+            return (
+              <li key={p}>
+                <div
+                  className={cn(
+                    'flex items-center gap-2 rounded border px-2 py-1.5 text-xs',
+                    isCurrent && 'border-brand-300 bg-brand-50 font-medium',
+                    isPast && 'border-emerald-200 bg-emerald-50 text-emerald-700',
+                    !isCurrent && !isPast && 'border-slate-200 text-slate-500',
+                  )}
+                >
+                  <span className={cn('rounded px-1.5 py-0.5 text-[10px]', PurchaseEvaluationPhaseColor[p])}>
+                    {p}
+                  </span>
+                  <span className="truncate">{PurchaseEvaluationPhaseLabel[p]}</span>
+                  {isCurrent && <span className="ml-auto text-[10px] text-brand-700">● hiện tại</span>}
+                  {isPast && <span className="ml-auto text-[10px] text-emerald-600">✓</span>}
+                </div>
+              </li>
+            )
+          })}
+      </ol>
+
+      {next.length > 0 && (
+        <div>
+          <Label className="text-xs">Chuyển tiếp:</Label>
+          <div className="mt-1 flex flex-wrap gap-1.5">
+            {next.map(p => (
+              <button
+                key={p}
+                onClick={() => setTarget(p)}
+                className={cn(
+                  'rounded border px-2 py-1 text-[11px] transition',
+                  p === PurchaseEvaluationPhase.TuChoi
+                    ? 'border-red-200 text-red-700 hover:bg-red-50'
+                    : 'border-brand-300 text-brand-700 hover:bg-brand-50',
+                )}
+              >
+                → {PurchaseEvaluationPhaseLabel[p]}
+              </button>
+            ))}
+          </div>
+        </div>
+      )}
+
+      {target !== null && (
+        <Dialog
+          open
+          onClose={() => setTarget(null)}
+          title={`Chuyển → ${PurchaseEvaluationPhaseLabel[target]}`}
+          footer={<>
+            <Button variant="ghost" onClick={() => setTarget(null)}>Hủy</Button>
+            <Button onClick={() => transition.mutate()} disabled={transition.isPending}>Xác nhận</Button>
+          </>}
+        >
+          <Label>Ghi chú (tùy chọn)</Label>
+          <Textarea value={comment} onChange={e => setComment(e.target.value)} rows={3} />
+        </Dialog>
+      )}
+    </div>
+  )
+}
+
+function isPastPhase(current: number, p: number, active: number[]): boolean {
+  const orderedIdx = active.indexOf(p)
+  const currentIdx = active.indexOf(current)
+  if (orderedIdx < 0 || currentIdx < 0) return false
+  return orderedIdx < currentIdx && p !== PurchaseEvaluationPhase.TuChoi
+}

fe-user/src/lib/menuKeys.ts

@@ -12,6 +12,8 @@ export const MenuKeys = {
   Users: 'Users',
   Roles: 'Roles',
   Permissions: 'Permissions',
+  PurchaseEvaluations: 'PurchaseEvaluations',
+  PeWorkflows: 'PeWorkflows',
 } as const
 
 export type MenuKey = typeof MenuKeys[keyof typeof MenuKeys]

fe-user/src/pages/pe/PurchaseEvaluationCreatePage.tsx

@@ -0,0 +1,176 @@
+// Create / edit draft phiếu Duyệt NCC (Header only — Suppliers + Details + Quotes
+// chỉnh sửa ở Detail tabs sau khi save).
+import { useEffect, useState } from 'react'
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { useNavigate, useSearchParams } from 'react-router-dom'
+import { toast } from 'sonner'
+import { ClipboardCheck } from 'lucide-react'
+import { Button } from '@/components/ui/Button'
+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 {
+  PurchaseEvaluationType,
+  PurchaseEvaluationTypeLabel,
+  type PeDetailBundle,
+} from '@/types/purchaseEvaluation'
+import type { Project } from '@/types/master'
+
+export function PurchaseEvaluationCreatePage() {
+  const navigate = useNavigate()
+  const qc = useQueryClient()
+  const [sp] = useSearchParams()
+  const editId = sp.get('id')
+  const urlType = sp.get('type') ? Number(sp.get('type')) : PurchaseEvaluationType.DuyetNcc
+
+  const projects = useQuery({
+    queryKey: ['all-projects'],
+    queryFn: async () => (await api.get<{ items: Project[] }>('/projects', { params: { pageSize: 1000 } })).data.items,
+  })
+  const existing = useQuery({
+    queryKey: ['pe-detail', editId],
+    queryFn: async () => (await api.get<PeDetailBundle>(`/purchase-evaluations/${editId}`)).data,
+    enabled: !!editId,
+  })
+
+  const [form, setForm] = useState({
+    type: urlType as number,
+    tenGoiThau: '',
+    projectId: '',
+    diaDiem: '',
+    moTa: '',
+    paymentTerms: '',
+  })
+
+  useEffect(() => {
+    if (existing.data) {
+      setForm({
+        type: existing.data.type,
+        tenGoiThau: existing.data.tenGoiThau,
+        projectId: existing.data.projectId,
+        diaDiem: existing.data.diaDiem ?? '',
+        moTa: existing.data.moTa ?? '',
+        paymentTerms: existing.data.paymentTerms ?? '',
+      })
+    }
+  }, [existing.data])
+
+  const mut = useMutation({
+    mutationFn: async () => {
+      if (editId) {
+        return api.put(`/purchase-evaluations/${editId}`, {
+          id: editId,
+          tenGoiThau: form.tenGoiThau,
+          diaDiem: form.diaDiem || null,
+          moTa: form.moTa || null,
+          paymentTerms: form.paymentTerms || null,
+        })
+      }
+      return api.post<{ id: string }>('/purchase-evaluations', {
+        type: form.type,
+        tenGoiThau: form.tenGoiThau,
+        projectId: form.projectId,
+        diaDiem: form.diaDiem || null,
+        moTa: form.moTa || null,
+        paymentTerms: form.paymentTerms || null,
+      })
+    },
+    onSuccess: res => {
+      toast.success(editId ? 'Đã lưu.' : 'Đã tạo phiếu.')
+      qc.invalidateQueries({ queryKey: ['pe-list'] })
+      const id = editId ?? (res as { data: { id: string } }).data.id
+      navigate(`/purchase-evaluations?id=${id}&type=${form.type}`)
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  return (
+    <div className="space-y-4 p-6">
+      <header className="flex items-center gap-2">
+        <ClipboardCheck className="h-5 w-5 text-slate-500" />
+        <h1 className="text-base font-semibold tracking-tight text-slate-900">
+          {editId ? 'Sửa phiếu Duyệt NCC' : 'Tạo phiếu Duyệt NCC mới'}
+        </h1>
+      </header>
+
+      <div className="max-w-2xl space-y-4 rounded-lg border border-slate-200 bg-white p-6 shadow-sm">
+        <div>
+          <Label>Loại quy trình</Label>
+          <Select
+            value={form.type}
+            disabled={!!editId}
+            onChange={e => setForm({ ...form, type: Number(e.target.value) })}
+          >
+            {Object.values(PurchaseEvaluationType).map(t => (
+              <option key={t} value={t}>{PurchaseEvaluationTypeLabel[t]}</option>
+            ))}
+          </Select>
+        </div>
+
+        <div>
+          <Label>Tên gói thầu *</Label>
+          <Input
+            value={form.tenGoiThau}
+            onChange={e => setForm({ ...form, tenGoiThau: e.target.value })}
+            placeholder="vd Cung cấp bê tông"
+          />
+        </div>
+
+        <div>
+          <Label>Dự án *</Label>
+          <Select
+            value={form.projectId}
+            disabled={!!editId}
+            onChange={e => setForm({ ...form, projectId: e.target.value })}
+          >
+            <option value="">-- Chọn --</option>
+            {projects.data?.map(p => (
+              <option key={p.id} value={p.id}>{p.code} — {p.name}</option>
+            ))}
+          </Select>
+        </div>
+
+        <div>
+          <Label>Địa điểm</Label>
+          <Input
+            value={form.diaDiem}
+            onChange={e => setForm({ ...form, diaDiem: e.target.value })}
+            placeholder="Lô K, KCN Lộc An - Bình Sơn..."
+          />
+        </div>
+
+        <div>
+          <Label>Mô tả</Label>
+          <Textarea
+            rows={3}
+            value={form.moTa}
+            onChange={e => setForm({ ...form, moTa: e.target.value })}
+          />
+        </div>
+
+        <div>
+          <Label>Điều khoản thanh toán (JSON hoặc text)</Label>
+          <Textarea
+            rows={3}
+            value={form.paymentTerms}
+            onChange={e => setForm({ ...form, paymentTerms: e.target.value })}
+            placeholder='{"tamUng":"10%","thanhToanTam":"100% W.done","quyetToan":"Final Account","baoHanh":"5%"}'
+          />
+        </div>
+
+        <div className="flex justify-end gap-2">
+          <Button variant="ghost" onClick={() => navigate(-1)}>Hủy</Button>
+          <Button
+            onClick={() => mut.mutate()}
+            disabled={!form.tenGoiThau || !form.projectId || mut.isPending}
+          >
+            {editId ? 'Lưu' : 'Tạo phiếu'}
+          </Button>
+        </div>
+      </div>
+    </div>
+  )
+}

fe-user/src/pages/pe/PurchaseEvaluationsListPage.tsx

@@ -0,0 +1,250 @@
+// List + Detail phiếu Duyệt NCC — 3-panel: List | Detail tabs | Workflow + history.
+// URL params: type (filter A/B), pendingMe (1=inbox), id (selected), q (search).
+import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
+import { useNavigate, useSearchParams } from 'react-router-dom'
+import { toast } from 'sonner'
+import { ClipboardCheck, Plus, Search, X } from 'lucide-react'
+import { Input } from '@/components/ui/Input'
+import { Select } from '@/components/ui/Select'
+import { Button } from '@/components/ui/Button'
+import { EmptyState } from '@/components/EmptyState'
+import { SlaTimer } from '@/components/SlaTimer'
+import { api } from '@/lib/api'
+import { getErrorMessage } from '@/lib/apiError'
+import { cn } from '@/lib/cn'
+import type { Paged } from '@/types/master'
+import {
+  PurchaseEvaluationPhase,
+  PurchaseEvaluationPhaseColor,
+  PurchaseEvaluationPhaseLabel,
+  PurchaseEvaluationTypeLabel,
+  type PeDetailBundle,
+  type PeListItem,
+} from '@/types/purchaseEvaluation'
+import { PeDetailTabs } from '@/components/pe/PeDetailTabs'
+import { PeWorkflowPanel } from '@/components/pe/PeWorkflowPanel'
+
+export function PurchaseEvaluationsListPage() {
+  const navigate = useNavigate()
+  const qc = useQueryClient()
+  const [sp, setSp] = useSearchParams()
+  const typeFilter = sp.get('type') ? Number(sp.get('type')) : null
+  const pendingMe = sp.get('pendingMe') === '1'
+  const search = sp.get('q') ?? ''
+  const phase = sp.get('phase') ?? ''
+  const selectedId = sp.get('id')
+
+  const list = useQuery({
+    queryKey: ['pe-list', { typeFilter, pendingMe, search, phase }],
+    queryFn: async () => {
+      if (pendingMe) {
+        const res = await api.get<PeListItem[]>('/purchase-evaluations/inbox', {
+          params: { type: typeFilter ?? undefined },
+        })
+        return { items: res.data, total: res.data.length, page: 1, pageSize: res.data.length }
+      }
+      const res = await api.get<Paged<PeListItem>>('/purchase-evaluations', {
+        params: {
+          pageSize: 50,
+          search: search || undefined,
+          type: typeFilter ?? undefined,
+          phase: phase || undefined,
+        },
+      })
+      return res.data
+    },
+  })
+
+  const detail = useQuery({
+    queryKey: ['pe-detail', selectedId],
+    queryFn: async () => (await api.get<PeDetailBundle>(`/purchase-evaluations/${selectedId}`)).data,
+    enabled: !!selectedId,
+  })
+
+  const del = useMutation({
+    mutationFn: async (id: string) => api.delete(`/purchase-evaluations/${id}`),
+    onSuccess: () => {
+      toast.success('Đã xóa phiếu.')
+      setParam('id', null)
+      qc.invalidateQueries({ queryKey: ['pe-list'] })
+    },
+    onError: e => toast.error(getErrorMessage(e)),
+  })
+
+  function setParam(key: string, value: string | null) {
+    const next = new URLSearchParams(sp)
+    if (value == null || value === '') next.delete(key)
+    else next.set(key, value)
+    if (key !== 'id') next.delete('page')
+    setSp(next, { replace: key === 'q' })
+  }
+
+  function selectRow(id: string) {
+    if (typeof window !== 'undefined' && window.matchMedia('(min-width: 1024px)').matches) {
+      setParam('id', id)
+    } else {
+      navigate(`/purchase-evaluations/${id}`)
+    }
+  }
+
+  const rows = list.data?.items ?? []
+  const createHref =
+    typeFilter != null ? `/purchase-evaluations/new?type=${typeFilter}` : '/purchase-evaluations/new'
+
+  const headerTitle = typeFilter
+    ? (pendingMe ? `${PurchaseEvaluationTypeLabel[typeFilter]} — Chờ duyệt` : PurchaseEvaluationTypeLabel[typeFilter])
+    : pendingMe ? 'Duyệt NCC — Chờ tôi' : 'Quy trình Duyệt NCC'
+
+  return (
+    <div className="flex h-[calc(100vh-4rem)] flex-col">
+      <header className="flex shrink-0 flex-wrap items-center justify-between gap-3 border-b border-slate-200 bg-white px-6 py-3">
+        <div className="flex items-center gap-2">
+          <ClipboardCheck className="h-5 w-5 text-slate-500" />
+          <h1 className="text-base font-semibold tracking-tight text-slate-900">{headerTitle}</h1>
+          <span className="ml-2 rounded-full bg-slate-100 px-2 py-0.5 text-[11px] font-medium text-slate-600">
+            {list.data?.total ?? 0}
+          </span>
+        </div>
+        <Button onClick={() => navigate(createHref)} className="gap-1.5 text-xs">
+          <Plus className="h-3.5 w-3.5" /> Tạo phiếu mới
+        </Button>
+      </header>
+
+      <div className="grid flex-1 grid-cols-1 overflow-hidden lg:grid-cols-[340px_1fr_360px]">
+        {/* Panel 1: List */}
+        <aside className="flex flex-col overflow-hidden border-r border-slate-200 bg-white">
+          <div className="space-y-2 border-b border-slate-200 p-3">
+            <div className="relative">
+              <Search className="pointer-events-none absolute left-2.5 top-2.5 h-4 w-4 text-slate-400" />
+              <Input
+                value={search}
+                onChange={e => setParam('q', e.target.value)}
+                placeholder="Tìm mã / tên gói thầu / dự án…"
+                className="pl-8"
+              />
+            </div>
+            <Select value={phase} onChange={e => setParam('phase', e.target.value)}>
+              <option value="">Tất cả phase</option>
+              {Object.values(PurchaseEvaluationPhase).map(p => (
+                <option key={p} value={p}>{PurchaseEvaluationPhaseLabel[p]}</option>
+              ))}
+            </Select>
+          </div>
+
+          <div className="flex-1 overflow-y-auto">
+            {list.isLoading && (
+              <div className="space-y-2 p-3">
+                {Array.from({ length: 6 }).map((_, i) => (
+                  <div key={i} className="h-16 animate-pulse rounded-md bg-slate-100" />
+                ))}
+              </div>
+            )}
+            {!list.isLoading && rows.length === 0 && (
+              <div className="p-6">
+                <EmptyState icon={ClipboardCheck} title="Chưa có phiếu" description="Tạo phiếu mới để bắt đầu quy trình." />
+              </div>
+            )}
+            <ul className="divide-y divide-slate-100">
+              {rows.map(p => (
+                <li key={p.id}>
+                  <button
+                    onClick={() => selectRow(p.id)}
+                    className={cn(
+                      'block w-full px-3 py-2.5 text-left transition hover:bg-slate-50',
+                      selectedId === p.id && 'bg-brand-50 ring-1 ring-inset ring-brand-200',
+                    )}
+                  >
+                    <div className="flex items-start justify-between gap-2">
+                      <div className="min-w-0 flex-1">
+                        <div className="truncate text-[13px] font-medium text-slate-900">{p.tenGoiThau}</div>
+                        <div className="mt-0.5 flex items-center gap-1.5 text-[11px] text-slate-500">
+                          <span className="font-mono">{p.maPhieu ?? '—'}</span>
+                          <span>·</span>
+                          <span className="truncate">{p.projectName}</span>
+                        </div>
+                        {p.selectedSupplierName && (
+                          <div className="mt-0.5 truncate text-[11px] text-emerald-600">
+                            ✓ {p.selectedSupplierName}
+                          </div>
+                        )}
+                      </div>
+                      <span
+                        className={cn(
+                          'shrink-0 rounded px-1.5 py-0.5 text-[10px] font-medium',
+                          PurchaseEvaluationPhaseColor[p.phase],
+                        )}
+                      >
+                        {PurchaseEvaluationPhaseLabel[p.phase]}
+                      </span>
+                    </div>
+                    <div className="mt-1 flex items-center justify-between text-[11px] text-slate-500">
+                      <span className="rounded bg-slate-100 px-1.5 py-0.5 text-slate-600">
+                        {PurchaseEvaluationTypeLabel[p.type]}
+                      </span>
+                      <SlaTimer deadline={p.slaDeadline} createdAt={p.createdAt} />
+                    </div>
+                    {p.contractId && (
+                      <div className="mt-1 text-[10px] text-brand-600">✓ Đã tạo HĐ</div>
+                    )}
+                  </button>
+                </li>
+              ))}
+            </ul>
+          </div>
+        </aside>
+
+        {/* Panel 2: Detail tabs */}
+        <main className="hidden overflow-y-auto bg-slate-50 p-6 lg:block">
+          {!selectedId && (
+            <EmptyState icon={ClipboardCheck} title="Chọn phiếu ở danh sách" description="Chi tiết NCC + báo giá + duyệt sẽ hiển thị ở đây." />
+          )}
+          {selectedId && detail.isLoading && <div className="text-sm text-slate-500">Đang tải…</div>}
+          {selectedId && detail.data && (
+            <PeDetailTabs
+              evaluation={detail.data}
+              onBack={() => setParam('id', null)}
+              onDelete={() => del.mutate(detail.data!.id)}
+            />
+          )}
+        </main>
+
+        {/* Panel 3: Workflow + history */}
+        <aside className="hidden overflow-y-auto border-l border-slate-200 bg-white p-4 lg:block">
+          {!selectedId && (
+            <div className="rounded-lg border border-dashed border-slate-200 p-6 text-center text-sm text-slate-400">
+              <X className="mx-auto mb-2 h-5 w-5" />
+              Quy trình duyệt sẽ hiện khi chọn phiếu.
+            </div>
+          )}
+          {selectedId && detail.data && <PeWorkflowPanel evaluation={detail.data} />}
+        </aside>
+      </div>
+    </div>
+  )
+}
+
+// Fullpage detail route cho mobile (/purchase-evaluations/:id)
+export function PurchaseEvaluationDetailPage() {
+  const navigate = useNavigate()
+  const id = location.pathname.split('/').pop()!
+  const detail = useQuery({
+    queryKey: ['pe-detail', id],
+    queryFn: async () => (await api.get<PeDetailBundle>(`/purchase-evaluations/${id}`)).data,
+  })
+  const del = useMutation({
+    mutationFn: async () => api.delete(`/purchase-evaluations/${id}`),
+    onSuccess: () => {
+      toast.success('Đã xóa.')
+      navigate('/purchase-evaluations')
+    },
+  })
+  if (detail.isLoading) return <div className="p-6 text-sm text-slate-500">Đang tải…</div>
+  if (!detail.data) return <div className="p-6 text-sm text-red-600">Không tìm thấy phiếu.</div>
+  return (
+    <div className="space-y-4 p-6">
+      <PeDetailTabs evaluation={detail.data} onBack={() => navigate('/purchase-evaluations')} onDelete={() => del.mutate()} />
+      <PeWorkflowPanel evaluation={detail.data} />
+    </div>
+  )
+}
+

fe-user/src/types/purchaseEvaluation.ts

@@ -0,0 +1,165 @@
+// Types cho module Duyệt NCC (PurchaseEvaluation) — mirror BE Domain.
+
+export const PurchaseEvaluationType = {
+  DuyetNcc: 1,
+  DuyetNccPhuongAn: 2,
+} as const
+export type PurchaseEvaluationType = typeof PurchaseEvaluationType[keyof typeof PurchaseEvaluationType]
+
+export const PurchaseEvaluationTypeLabel: Record<number, string> = {
+  1: 'Duyệt NCC',
+  2: 'Duyệt NCC - Phương án',
+}
+
+export const PurchaseEvaluationTypeCode: Record<number, string> = {
+  1: 'DuyetNcc',
+  2: 'DuyetNccPhuongAn',
+}
+
+export const PurchaseEvaluationPhase = {
+  DangSoanThao: 1,
+  ChoPurchasing: 2,
+  ChoDuAn: 3,
+  ChoCCM: 4,
+  ChoCEODuyetPA: 5,
+  ChoCEODuyetNCC: 6,
+  DaDuyet: 7,
+  TuChoi: 99,
+} as const
+export type PurchaseEvaluationPhase = typeof PurchaseEvaluationPhase[keyof typeof PurchaseEvaluationPhase]
+
+export const PurchaseEvaluationPhaseLabel: Record<number, string> = {
+  1: 'Đang soạn thảo',
+  2: 'Chờ Purchasing',
+  3: 'Chờ Dự án',
+  4: 'Chờ CCM',
+  5: 'Chờ CEO duyệt PA',
+  6: 'Chờ CEO duyệt NCC',
+  7: 'Đã duyệt',
+  99: 'Từ chối',
+}
+
+export const PurchaseEvaluationPhaseColor: Record<number, string> = {
+  1: 'bg-slate-100 text-slate-700',
+  2: 'bg-blue-100 text-blue-700',
+  3: 'bg-orange-100 text-orange-700',
+  4: 'bg-indigo-100 text-indigo-700',
+  5: 'bg-fuchsia-100 text-fuchsia-700',
+  6: 'bg-pink-100 text-pink-700',
+  7: 'bg-emerald-100 text-emerald-700',
+  99: 'bg-red-100 text-red-700',
+}
+
+export type PeListItem = {
+  id: string
+  maPhieu: string | null
+  tenGoiThau: string
+  type: number
+  phase: number
+  projectId: string
+  projectName: string
+  selectedSupplierId: string | null
+  selectedSupplierName: string | null
+  contractId: string | null
+  slaDeadline: string | null
+  createdAt: string
+}
+
+export type PeSupplier = {
+  id: string
+  supplierId: string
+  supplierName: string
+  displayName: string | null
+  contactName: string | null
+  contactEmail: string | null
+  contactPhone: string | null
+  paymentTermText: string | null
+  note: string | null
+  order: number
+}
+
+export type PeQuote = {
+  id: string
+  purchaseEvaluationDetailId: string
+  purchaseEvaluationSupplierId: string
+  bgVat: number
+  chuaVat: number
+  thanhTien: number
+  isSelected: boolean
+  note: string | null
+}
+
+export type PeDetailRow = {
+  id: string
+  groupCode: string
+  groupName: string
+  itemCode: string | null
+  noiDung: string
+  donViTinh: string | null
+  khoiLuongNganSach: number
+  khoiLuongThiCong: number
+  donGiaNganSach: number
+  thanhTienNganSach: number
+  order: number
+  ghiChu: string | null
+  quotes: PeQuote[]
+}
+
+export type PeApproval = {
+  id: string
+  fromPhase: number
+  toPhase: number
+  approverUserId: string | null
+  approverName: string | null
+  decision: number
+  comment: string | null
+  approvedAt: string
+}
+
+export type PeWorkflowSummary = {
+  policyName: string
+  policyDescription: string
+  activePhases: number[]
+  nextPhases: number[]
+}
+
+export type PeChangelog = {
+  id: string
+  entityType: number
+  entityId: string | null
+  action: number
+  phaseAtChange: number | null
+  userId: string | null
+  userName: string | null
+  summary: string | null
+  fieldChangesJson: string | null
+  contextNote: string | null
+  createdAt: string
+}
+
+export type PeDetailBundle = {
+  id: string
+  maPhieu: string | null
+  type: number
+  phase: number
+  tenGoiThau: string
+  diaDiem: string | null
+  moTa: string | null
+  projectId: string
+  projectName: string
+  departmentId: string | null
+  departmentName: string | null
+  drafterUserId: string | null
+  drafterName: string | null
+  selectedSupplierId: string | null
+  selectedSupplierName: string | null
+  contractId: string | null
+  paymentTerms: string | null
+  slaDeadline: string | null
+  createdAt: string
+  updatedAt: string | null
+  suppliers: PeSupplier[]
+  details: PeDetailRow[]
+  approvals: PeApproval[]
+  workflow: PeWorkflowSummary
+}

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

@@ -0,0 +1,191 @@
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using SolutionErp.Application.Common.Models;
+using SolutionErp.Application.PurchaseEvaluations;
+using SolutionErp.Application.PurchaseEvaluations.Dtos;
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Api.Controllers;
+
+[ApiController]
+[Route("api/purchase-evaluations")]
+[Authorize]
+public class PurchaseEvaluationsController(IMediator mediator) : ControllerBase
+{
+    [HttpGet]
+    public async Task<ActionResult<PagedResult<PurchaseEvaluationListItemDto>>> List(
+        [FromQuery] int page = 1, [FromQuery] int pageSize = 20,
+        [FromQuery] string? search = null, [FromQuery] bool sortDesc = true,
+        [FromQuery] PurchaseEvaluationType? type = null,
+        [FromQuery] PurchaseEvaluationPhase? phase = null,
+        [FromQuery] Guid? projectId = null,
+        CancellationToken ct = default)
+        => Ok(await mediator.Send(new ListPurchaseEvaluationsQuery(type, phase, projectId)
+        { Page = page, PageSize = pageSize, Search = search, SortDesc = sortDesc }, ct));
+
+    [HttpGet("inbox")]
+    public async Task<ActionResult<List<PurchaseEvaluationListItemDto>>> Inbox(
+        [FromQuery] PurchaseEvaluationType? type = null, CancellationToken ct = default)
+        => Ok(await mediator.Send(new GetMyPurchaseEvaluationInboxQuery(type), ct));
+
+    [HttpGet("{id:guid}")]
+    public async Task<ActionResult<PurchaseEvaluationDetailBundleDto>> Get(Guid id, CancellationToken ct)
+        => Ok(await mediator.Send(new GetPurchaseEvaluationQuery(id), ct));
+
+    [HttpPost]
+    public async Task<ActionResult<object>> Create([FromBody] CreatePurchaseEvaluationCommand cmd, CancellationToken ct)
+    {
+        var id = await mediator.Send(cmd, ct);
+        return CreatedAtAction(nameof(Get), new { id }, new { id });
+    }
+
+    [HttpPut("{id:guid}")]
+    public async Task<IActionResult> Update(Guid id, [FromBody] UpdatePurchaseEvaluationDraftCommand cmd, CancellationToken ct)
+    {
+        if (id != cmd.Id) return BadRequest(new { detail = "ID không khớp" });
+        await mediator.Send(cmd, ct);
+        return NoContent();
+    }
+
+    [HttpPost("{id:guid}/transitions")]
+    public async Task<IActionResult> Transition(Guid id, [FromBody] TransitionPeBody body, CancellationToken ct)
+    {
+        await mediator.Send(new TransitionPurchaseEvaluationCommand(id, body.TargetPhase, body.Decision, body.Comment), ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{id:guid}")]
+    public async Task<IActionResult> Delete(Guid id, CancellationToken ct)
+    {
+        await mediator.Send(new DeletePurchaseEvaluationCommand(id), ct);
+        return NoContent();
+    }
+
+    // ========== Suppliers (N:M) ==========
+
+    [HttpPost("{id:guid}/suppliers")]
+    public async Task<ActionResult<object>> AddSupplier(Guid id, [FromBody] AddSupplierBody body, CancellationToken ct)
+    {
+        var newId = await mediator.Send(new AddPurchaseEvaluationSupplierCommand(
+            id, body.SupplierId, body.DisplayName, body.ContactName, body.ContactEmail,
+            body.ContactPhone, body.PaymentTermText, body.Note), ct);
+        return Ok(new { id = newId });
+    }
+
+    [HttpPut("{id:guid}/suppliers/{supplierRowId:guid}")]
+    public async Task<IActionResult> UpdateSupplier(Guid id, Guid supplierRowId, [FromBody] AddSupplierBody body, CancellationToken ct)
+    {
+        await mediator.Send(new UpdatePurchaseEvaluationSupplierCommand(
+            id, supplierRowId, body.DisplayName, body.ContactName, body.ContactEmail,
+            body.ContactPhone, body.PaymentTermText, body.Note), ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{id:guid}/suppliers/{supplierRowId:guid}")]
+    public async Task<IActionResult> RemoveSupplier(Guid id, Guid supplierRowId, CancellationToken ct)
+    {
+        await mediator.Send(new RemovePurchaseEvaluationSupplierCommand(id, supplierRowId), ct);
+        return NoContent();
+    }
+
+    [HttpPost("{id:guid}/select-winner")]
+    public async Task<IActionResult> SelectWinner(Guid id, [FromBody] SelectWinnerBody body, CancellationToken ct)
+    {
+        await mediator.Send(new SelectPurchaseEvaluationWinnerCommand(id, body.SupplierId), ct);
+        return NoContent();
+    }
+
+    // ========== Details (hạng mục + ngân sách) ==========
+
+    [HttpPost("{id:guid}/details")]
+    public async Task<ActionResult<object>> AddDetail(Guid id, [FromBody] DetailBody body, CancellationToken ct)
+    {
+        var newId = await mediator.Send(new AddPurchaseEvaluationDetailCommand(
+            id, body.GroupCode, body.GroupName, body.ItemCode, body.NoiDung, body.DonViTinh,
+            body.KhoiLuongNganSach, body.KhoiLuongThiCong, body.DonGiaNganSach,
+            body.ThanhTienNganSach, body.GhiChu), ct);
+        return Ok(new { id = newId });
+    }
+
+    [HttpPut("{id:guid}/details/{detailId:guid}")]
+    public async Task<IActionResult> UpdateDetail(Guid id, Guid detailId, [FromBody] DetailBody body, CancellationToken ct)
+    {
+        await mediator.Send(new UpdatePurchaseEvaluationDetailCommand(
+            id, detailId, body.GroupCode, body.GroupName, body.ItemCode, body.NoiDung, body.DonViTinh,
+            body.KhoiLuongNganSach, body.KhoiLuongThiCong, body.DonGiaNganSach,
+            body.ThanhTienNganSach, body.GhiChu), ct);
+        return NoContent();
+    }
+
+    [HttpDelete("{id:guid}/details/{detailId:guid}")]
+    public async Task<IActionResult> DeleteDetail(Guid id, Guid detailId, CancellationToken ct)
+    {
+        await mediator.Send(new DeletePurchaseEvaluationDetailCommand(id, detailId), ct);
+        return NoContent();
+    }
+
+    // ========== Quotes (báo giá per NCC per Detail) ==========
+
+    [HttpPost("{id:guid}/quotes")]
+    public async Task<ActionResult<object>> UpsertQuote(Guid id, [FromBody] QuoteBody body, CancellationToken ct)
+    {
+        var qid = await mediator.Send(new UpsertPurchaseEvaluationQuoteCommand(
+            id, body.PurchaseEvaluationDetailId, body.PurchaseEvaluationSupplierId,
+            body.BgVat, body.ChuaVat, body.ThanhTien, body.IsSelected, body.Note), ct);
+        return Ok(new { id = qid });
+    }
+
+    [HttpDelete("{id:guid}/quotes/{quoteId:guid}")]
+    public async Task<IActionResult> DeleteQuote(Guid id, Guid quoteId, CancellationToken ct)
+    {
+        await mediator.Send(new DeletePurchaseEvaluationQuoteCommand(id, quoteId), ct);
+        return NoContent();
+    }
+
+    // ========== Changelogs ==========
+
+    [HttpGet("{id:guid}/changelogs")]
+    public async Task<List<PurchaseEvaluationChangelogDto>> GetChangelogs(Guid id, CancellationToken ct)
+        => await mediator.Send(new ListPurchaseEvaluationChangelogsQuery(id), ct);
+
+    // ========== Kế thừa HĐ ==========
+
+    // List phiếu đã DaDuyet chưa gen HĐ — dùng cho modal "Tạo HĐ từ phiếu"
+    [HttpGet("approved-pending-contract")]
+    public async Task<List<PurchaseEvaluationListItemDto>> ListApproved(CancellationToken ct)
+        => await mediator.Send(new ListApprovedPurchaseEvaluationsQuery(), ct);
+
+    [HttpPost("{id:guid}/create-contract")]
+    public async Task<ActionResult<object>> CreateContractFromEvaluation(
+        Guid id, [FromBody] CreateContractFromEvaluationBody body, CancellationToken ct)
+    {
+        var contractId = await mediator.Send(new CreateContractFromEvaluationCommand(
+            id, body.ContractType, body.TenHopDong, body.BypassProcurementAndCCM), ct);
+        return Ok(new { contractId });
+    }
+}
+
+public record CreateContractFromEvaluationBody(
+    Domain.Contracts.ContractType ContractType,
+    string? TenHopDong,
+    bool BypassProcurementAndCCM = false);
+
+public record TransitionPeBody(PurchaseEvaluationPhase TargetPhase, ApprovalDecision Decision, string? Comment);
+
+public record AddSupplierBody(
+    Guid SupplierId,
+    string? DisplayName, string? ContactName, string? ContactEmail, string? ContactPhone,
+    string? PaymentTermText, string? Note);
+
+public record SelectWinnerBody(Guid SupplierId);
+
+public record DetailBody(
+    string GroupCode, string GroupName, string? ItemCode, string NoiDung, string? DonViTinh,
+    decimal KhoiLuongNganSach, decimal KhoiLuongThiCong, decimal DonGiaNganSach,
+    decimal ThanhTienNganSach, string? GhiChu);
+
+public record QuoteBody(
+    Guid PurchaseEvaluationDetailId, Guid PurchaseEvaluationSupplierId,
+    decimal BgVat, decimal ChuaVat, decimal ThanhTien, bool IsSelected, string? Note);

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

@@ -6,6 +6,7 @@ using SolutionErp.Domain.Identity;
 using SolutionErp.Domain.Master;
 using SolutionErp.Domain.Master.Catalogs;
 using SolutionErp.Domain.Notifications;
+using SolutionErp.Domain.PurchaseEvaluations;
 
 namespace SolutionErp.Application.Common.Interfaces;
 
@@ -44,5 +45,17 @@ public interface IApplicationDbContext
     DbSet<NguyenTacNccDetail> NguyenTacNccDetails { get; }
     DbSet<NguyenTacDvDetail> NguyenTacDvDetails { get; }
 
+    // Module Duyệt NCC (tiền-HĐ) — 7 core + 3 workflow config
+    DbSet<PurchaseEvaluation> PurchaseEvaluations { get; }
+    DbSet<PurchaseEvaluationSupplier> PurchaseEvaluationSuppliers { get; }
+    DbSet<PurchaseEvaluationDetail> PurchaseEvaluationDetails { get; }
+    DbSet<PurchaseEvaluationQuote> PurchaseEvaluationQuotes { get; }
+    DbSet<PurchaseEvaluationApproval> PurchaseEvaluationApprovals { get; }
+    DbSet<PurchaseEvaluationChangelog> PurchaseEvaluationChangelogs { get; }
+    DbSet<PurchaseEvaluationAttachment> PurchaseEvaluationAttachments { get; }
+    DbSet<PurchaseEvaluationWorkflowDefinition> PurchaseEvaluationWorkflowDefinitions { get; }
+    DbSet<PurchaseEvaluationWorkflowStep> PurchaseEvaluationWorkflowSteps { get; }
+    DbSet<PurchaseEvaluationWorkflowStepApprover> PurchaseEvaluationWorkflowStepApprovers { get; }
+
     Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
 }

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

@@ -0,0 +1,142 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using SolutionErp.Application.Common.Exceptions;
+using SolutionErp.Application.Common.Interfaces;
+using SolutionErp.Application.Contracts.Services;
+using SolutionErp.Application.PurchaseEvaluations.Dtos;
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations;
+
+// Kế thừa từ phiếu Duyệt NCC đã DaDuyet → tạo HĐ Draft mới. Map cơ bản:
+// SupplierId = PE.SelectedSupplierId, ProjectId, DepartmentId, TenHopDong,
+// GiaTri (sum ThanhTienNganSach của details). ContractType do user chọn
+// (phiếu có thể gen HĐ ThauPhu/NhaCungCap/MuaBan... tùy gói thầu).
+//
+// KHÔNG copy Details per-type automatically — user điền riêng sau khi HĐ
+// gen, tránh mapping sai (PE detail schema ≠ 7 Contract detail schemas).
+// User có thể reference PE qua PE.ContractId để xem lại báo giá.
+public record CreateContractFromEvaluationCommand(
+    Guid PurchaseEvaluationId,
+    ContractType ContractType,
+    string? TenHopDong,
+    bool BypassProcurementAndCCM = false) : IRequest<Guid>;
+
+public class CreateContractFromEvaluationCommandValidator : AbstractValidator<CreateContractFromEvaluationCommand>
+{
+    public CreateContractFromEvaluationCommandValidator()
+    {
+        RuleFor(x => x.PurchaseEvaluationId).NotEmpty();
+        RuleFor(x => x.ContractType).IsInEnum();
+        RuleFor(x => x.TenHopDong).MaximumLength(500);
+    }
+}
+
+public class CreateContractFromEvaluationCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser,
+    IContractWorkflowService workflow,
+    IContractCodeGenerator codeGenerator) : IRequestHandler<CreateContractFromEvaluationCommand, Guid>
+{
+    public async Task<Guid> Handle(CreateContractFromEvaluationCommand request, CancellationToken ct)
+    {
+        var pe = await db.PurchaseEvaluations
+            .Include(p => p.Details)
+            .FirstOrDefaultAsync(p => p.Id == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.PurchaseEvaluationId);
+
+        if (pe.Phase != PurchaseEvaluationPhase.DaDuyet)
+            throw new ConflictException("Chỉ tạo HĐ từ phiếu đã duyệt xong (DaDuyet).");
+        if (pe.SelectedSupplierId is null)
+            throw new ConflictException("Phiếu chưa chọn NCC thắng — click 'Chọn NCC' trước.");
+        if (pe.ContractId is not null)
+            throw new ConflictException("Phiếu này đã tạo HĐ rồi.");
+
+        var supplier = await db.Suppliers.FirstOrDefaultAsync(s => s.Id == pe.SelectedSupplierId, ct)
+            ?? throw new NotFoundException("Supplier", pe.SelectedSupplierId.Value);
+        var project = await db.Projects.FirstOrDefaultAsync(p => p.Id == pe.ProjectId, ct)
+            ?? throw new NotFoundException("Project", pe.ProjectId);
+
+        var activeWfId = await db.WorkflowDefinitions.AsNoTracking()
+            .Where(w => w.ContractType == request.ContractType && w.IsActive)
+            .Select(w => (Guid?)w.Id)
+            .FirstOrDefaultAsync(ct);
+
+        var giaTri = pe.Details.Sum(d => d.ThanhTienNganSach);
+
+        var contract = new Contract
+        {
+            Type = request.ContractType,
+            Phase = ContractPhase.DangSoanThao,
+            SupplierId = pe.SelectedSupplierId.Value,
+            ProjectId = pe.ProjectId,
+            DepartmentId = pe.DepartmentId,
+            DrafterUserId = currentUser.UserId,
+            GiaTri = giaTri,
+            TenHopDong = request.TenHopDong ?? pe.TenGoiThau,
+            NoiDung = pe.MoTa,
+            BypassProcurementAndCCM = request.BypassProcurementAndCCM,
+            DraftData = pe.PaymentTerms,   // carry forward payment terms
+            WorkflowDefinitionId = activeWfId,
+            SlaDeadline = DateTime.UtcNow.Add(
+                workflow.GetPhaseSla(ContractPhase.DangSoanThao) ?? TimeSpan.FromDays(7)),
+        };
+        contract.MaHopDong = await codeGenerator.GenerateAsync(contract, project.Code, supplier.Code, ct);
+
+        db.Contracts.Add(contract);
+
+        // Changelog HĐ: note kế thừa từ phiếu
+        db.ContractChangelogs.Add(new ContractChangelog
+        {
+            ContractId = contract.Id,
+            EntityType = ChangelogEntityType.Contract,
+            Action = ChangelogAction.Insert,
+            PhaseAtChange = contract.Phase,
+            UserId = currentUser.UserId,
+            Summary = $"Tạo HĐ {contract.MaHopDong} từ phiếu {pe.MaPhieu ?? pe.TenGoiThau}",
+            ContextNote = $"Kế thừa từ PurchaseEvaluation {pe.Id}",
+        });
+
+        // Link 2 chiều
+        pe.ContractId = contract.Id;
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = pe.Id,
+            EntityType = PurchaseEvaluationEntityType.Header,
+            Action = ChangelogAction.Update,
+            PhaseAtChange = pe.Phase,
+            UserId = currentUser.UserId,
+            Summary = $"Tạo HĐ {contract.MaHopDong} từ phiếu",
+            ContextNote = $"Contract {contract.Id}",
+        });
+
+        await db.SaveChangesAsync(ct);
+        return contract.Id;
+    }
+}
+
+// List phiếu đã duyệt chưa gen HĐ (cho FE modal picker trong ContractCreatePage)
+public record ListApprovedPurchaseEvaluationsQuery : IRequest<List<PurchaseEvaluationListItemDto>>;
+
+public class ListApprovedPurchaseEvaluationsQueryHandler(IApplicationDbContext db)
+    : IRequestHandler<ListApprovedPurchaseEvaluationsQuery, List<PurchaseEvaluationListItemDto>>
+{
+    public async Task<List<PurchaseEvaluationListItemDto>> Handle(
+        ListApprovedPurchaseEvaluationsQuery request, CancellationToken ct)
+    {
+        return await (
+            from e in db.PurchaseEvaluations.AsNoTracking()
+            join p in db.Projects.AsNoTracking() on e.ProjectId equals p.Id
+            join s in db.Suppliers.AsNoTracking() on e.SelectedSupplierId equals s.Id into sj
+            from s in sj.DefaultIfEmpty()
+            where e.Phase == PurchaseEvaluationPhase.DaDuyet && e.ContractId == null
+            orderby e.CreatedAt descending
+            select new PurchaseEvaluationListItemDto(
+                e.Id, e.MaPhieu, e.TenGoiThau, e.Type, e.Phase,
+                e.ProjectId, p.Name,
+                e.SelectedSupplierId, s != null ? s.Name : null,
+                e.ContractId, e.SlaDeadline, e.CreatedAt)).ToListAsync(ct);
+    }
+}

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

@@ -0,0 +1,110 @@
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations.Dtos;
+
+public record PurchaseEvaluationListItemDto(
+    Guid Id,
+    string? MaPhieu,
+    string TenGoiThau,
+    PurchaseEvaluationType Type,
+    PurchaseEvaluationPhase Phase,
+    Guid ProjectId,
+    string ProjectName,
+    Guid? SelectedSupplierId,
+    string? SelectedSupplierName,
+    Guid? ContractId,
+    DateTime? SlaDeadline,
+    DateTime CreatedAt);
+
+public record PurchaseEvaluationSupplierDto(
+    Guid Id,
+    Guid SupplierId,
+    string SupplierName,
+    string? DisplayName,
+    string? ContactName,
+    string? ContactEmail,
+    string? ContactPhone,
+    string? PaymentTermText,
+    string? Note,
+    int Order);
+
+public record PurchaseEvaluationQuoteDto(
+    Guid Id,
+    Guid PurchaseEvaluationDetailId,
+    Guid PurchaseEvaluationSupplierId,
+    decimal BgVat,
+    decimal ChuaVat,
+    decimal ThanhTien,
+    bool IsSelected,
+    string? Note);
+
+public record PurchaseEvaluationDetailDto(
+    Guid Id,
+    string GroupCode,
+    string GroupName,
+    string? ItemCode,
+    string NoiDung,
+    string? DonViTinh,
+    decimal KhoiLuongNganSach,
+    decimal KhoiLuongThiCong,
+    decimal DonGiaNganSach,
+    decimal ThanhTienNganSach,
+    int Order,
+    string? GhiChu,
+    List<PurchaseEvaluationQuoteDto> Quotes);
+
+public record PurchaseEvaluationApprovalDto(
+    Guid Id,
+    PurchaseEvaluationPhase FromPhase,
+    PurchaseEvaluationPhase ToPhase,
+    Guid? ApproverUserId,
+    string? ApproverName,
+    ApprovalDecision Decision,
+    string? Comment,
+    DateTime ApprovedAt);
+
+public record PurchaseEvaluationChangelogDto(
+    Guid Id,
+    PurchaseEvaluationEntityType EntityType,
+    Guid? EntityId,
+    ChangelogAction Action,
+    PurchaseEvaluationPhase? PhaseAtChange,
+    Guid? UserId,
+    string? UserName,
+    string? Summary,
+    string? FieldChangesJson,
+    string? ContextNote,
+    DateTime CreatedAt);
+
+public record PurchaseEvaluationWorkflowSummaryDto(
+    string PolicyName,
+    string PolicyDescription,
+    List<PurchaseEvaluationPhase> ActivePhases,
+    List<PurchaseEvaluationPhase> NextPhases);
+
+public record PurchaseEvaluationDetailBundleDto(
+    Guid Id,
+    string? MaPhieu,
+    PurchaseEvaluationType Type,
+    PurchaseEvaluationPhase Phase,
+    string TenGoiThau,
+    string? DiaDiem,
+    string? MoTa,
+    Guid ProjectId,
+    string ProjectName,
+    Guid? DepartmentId,
+    string? DepartmentName,
+    Guid? DrafterUserId,
+    string? DrafterName,
+    Guid? SelectedSupplierId,
+    string? SelectedSupplierName,
+    Guid? ContractId,
+    string? PaymentTerms,
+    DateTime? SlaDeadline,
+    DateTime CreatedAt,
+    DateTime? UpdatedAt,
+    List<PurchaseEvaluationSupplierDto> Suppliers,
+    List<PurchaseEvaluationDetailDto> Details,
+    List<PurchaseEvaluationApprovalDto> Approvals,
+    PurchaseEvaluationWorkflowSummaryDto Workflow);

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

@@ -0,0 +1,249 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using SolutionErp.Application.Common.Exceptions;
+using SolutionErp.Application.Common.Interfaces;
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations;
+
+// ========== Detail (hạng mục + ngân sách) ==========
+
+public record AddPurchaseEvaluationDetailCommand(
+    Guid PurchaseEvaluationId,
+    string GroupCode,
+    string GroupName,
+    string? ItemCode,
+    string NoiDung,
+    string? DonViTinh,
+    decimal KhoiLuongNganSach,
+    decimal KhoiLuongThiCong,
+    decimal DonGiaNganSach,
+    decimal ThanhTienNganSach,
+    string? GhiChu) : IRequest<Guid>;
+
+public class AddPurchaseEvaluationDetailCommandValidator : AbstractValidator<AddPurchaseEvaluationDetailCommand>
+{
+    public AddPurchaseEvaluationDetailCommandValidator()
+    {
+        RuleFor(x => x.PurchaseEvaluationId).NotEmpty();
+        RuleFor(x => x.GroupCode).NotEmpty().MaximumLength(50);
+        RuleFor(x => x.GroupName).NotEmpty().MaximumLength(200);
+        RuleFor(x => x.NoiDung).NotEmpty().MaximumLength(500);
+    }
+}
+
+public class AddPurchaseEvaluationDetailCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser) : IRequestHandler<AddPurchaseEvaluationDetailCommand, Guid>
+{
+    public async Task<Guid> Handle(AddPurchaseEvaluationDetailCommand request, CancellationToken ct)
+    {
+        var evaluation = await db.PurchaseEvaluations.FirstOrDefaultAsync(x => x.Id == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.PurchaseEvaluationId);
+
+        var maxOrder = await db.PurchaseEvaluationDetails
+            .Where(d => d.PurchaseEvaluationId == request.PurchaseEvaluationId)
+            .Select(d => (int?)d.Order)
+            .MaxAsync(ct);
+
+        var entity = new PurchaseEvaluationDetail
+        {
+            PurchaseEvaluationId = request.PurchaseEvaluationId,
+            GroupCode = request.GroupCode,
+            GroupName = request.GroupName,
+            ItemCode = request.ItemCode,
+            NoiDung = request.NoiDung,
+            DonViTinh = request.DonViTinh,
+            KhoiLuongNganSach = request.KhoiLuongNganSach,
+            KhoiLuongThiCong = request.KhoiLuongThiCong,
+            DonGiaNganSach = request.DonGiaNganSach,
+            ThanhTienNganSach = request.ThanhTienNganSach,
+            GhiChu = request.GhiChu,
+            Order = (maxOrder ?? 0) + 1,
+        };
+        db.PurchaseEvaluationDetails.Add(entity);
+
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = request.PurchaseEvaluationId,
+            EntityType = PurchaseEvaluationEntityType.Detail,
+            EntityId = entity.Id,
+            Action = ChangelogAction.Insert,
+            PhaseAtChange = evaluation.Phase,
+            UserId = currentUser.UserId,
+            Summary = $"Thêm hạng mục {request.GroupCode} — {request.NoiDung}",
+        });
+
+        await db.SaveChangesAsync(ct);
+        return entity.Id;
+    }
+}
+
+public record UpdatePurchaseEvaluationDetailCommand(
+    Guid PurchaseEvaluationId,
+    Guid DetailId,
+    string GroupCode,
+    string GroupName,
+    string? ItemCode,
+    string NoiDung,
+    string? DonViTinh,
+    decimal KhoiLuongNganSach,
+    decimal KhoiLuongThiCong,
+    decimal DonGiaNganSach,
+    decimal ThanhTienNganSach,
+    string? GhiChu) : IRequest;
+
+public class UpdatePurchaseEvaluationDetailCommandHandler(
+    IApplicationDbContext db) : IRequestHandler<UpdatePurchaseEvaluationDetailCommand>
+{
+    public async Task Handle(UpdatePurchaseEvaluationDetailCommand request, CancellationToken ct)
+    {
+        var entity = await db.PurchaseEvaluationDetails
+            .FirstOrDefaultAsync(x => x.Id == request.DetailId && x.PurchaseEvaluationId == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluationDetail", request.DetailId);
+
+        entity.GroupCode = request.GroupCode;
+        entity.GroupName = request.GroupName;
+        entity.ItemCode = request.ItemCode;
+        entity.NoiDung = request.NoiDung;
+        entity.DonViTinh = request.DonViTinh;
+        entity.KhoiLuongNganSach = request.KhoiLuongNganSach;
+        entity.KhoiLuongThiCong = request.KhoiLuongThiCong;
+        entity.DonGiaNganSach = request.DonGiaNganSach;
+        entity.ThanhTienNganSach = request.ThanhTienNganSach;
+        entity.GhiChu = request.GhiChu;
+
+        await db.SaveChangesAsync(ct);
+    }
+}
+
+public record DeletePurchaseEvaluationDetailCommand(Guid PurchaseEvaluationId, Guid DetailId) : IRequest;
+
+public class DeletePurchaseEvaluationDetailCommandHandler(
+    IApplicationDbContext db) : IRequestHandler<DeletePurchaseEvaluationDetailCommand>
+{
+    public async Task Handle(DeletePurchaseEvaluationDetailCommand request, CancellationToken ct)
+    {
+        var entity = await db.PurchaseEvaluationDetails
+            .FirstOrDefaultAsync(x => x.Id == request.DetailId && x.PurchaseEvaluationId == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluationDetail", request.DetailId);
+
+        db.PurchaseEvaluationDetails.Remove(entity);
+        await db.SaveChangesAsync(ct);
+    }
+}
+
+// ========== Quote (báo giá per NCC per Detail) — upsert ==========
+
+public record UpsertPurchaseEvaluationQuoteCommand(
+    Guid PurchaseEvaluationId,
+    Guid PurchaseEvaluationDetailId,
+    Guid PurchaseEvaluationSupplierId,
+    decimal BgVat,
+    decimal ChuaVat,
+    decimal ThanhTien,
+    bool IsSelected,
+    string? Note) : IRequest<Guid>;
+
+public class UpsertPurchaseEvaluationQuoteCommandHandler(
+    IApplicationDbContext db) : IRequestHandler<UpsertPurchaseEvaluationQuoteCommand, Guid>
+{
+    public async Task<Guid> Handle(UpsertPurchaseEvaluationQuoteCommand request, CancellationToken ct)
+    {
+        // Verify parents exist + same phiếu
+        var detail = await db.PurchaseEvaluationDetails.FirstOrDefaultAsync(
+            d => d.Id == request.PurchaseEvaluationDetailId && d.PurchaseEvaluationId == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluationDetail", request.PurchaseEvaluationDetailId);
+
+        var supplier = await db.PurchaseEvaluationSuppliers.FirstOrDefaultAsync(
+            s => s.Id == request.PurchaseEvaluationSupplierId && s.PurchaseEvaluationId == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluationSupplier", request.PurchaseEvaluationSupplierId);
+
+        var existing = await db.PurchaseEvaluationQuotes.FirstOrDefaultAsync(
+            q => q.PurchaseEvaluationDetailId == request.PurchaseEvaluationDetailId
+                && q.PurchaseEvaluationSupplierId == request.PurchaseEvaluationSupplierId, ct);
+
+        if (existing is not null)
+        {
+            existing.BgVat = request.BgVat;
+            existing.ChuaVat = request.ChuaVat;
+            existing.ThanhTien = request.ThanhTien;
+            existing.IsSelected = request.IsSelected;
+            existing.Note = request.Note;
+            await db.SaveChangesAsync(ct);
+            return existing.Id;
+        }
+
+        var entity = new PurchaseEvaluationQuote
+        {
+            PurchaseEvaluationDetailId = request.PurchaseEvaluationDetailId,
+            PurchaseEvaluationSupplierId = request.PurchaseEvaluationSupplierId,
+            BgVat = request.BgVat,
+            ChuaVat = request.ChuaVat,
+            ThanhTien = request.ThanhTien,
+            IsSelected = request.IsSelected,
+            Note = request.Note,
+        };
+        db.PurchaseEvaluationQuotes.Add(entity);
+        await db.SaveChangesAsync(ct);
+        return entity.Id;
+    }
+}
+
+public record DeletePurchaseEvaluationQuoteCommand(Guid PurchaseEvaluationId, Guid QuoteId) : IRequest;
+
+public class DeletePurchaseEvaluationQuoteCommandHandler(
+    IApplicationDbContext db) : IRequestHandler<DeletePurchaseEvaluationQuoteCommand>
+{
+    public async Task Handle(DeletePurchaseEvaluationQuoteCommand request, CancellationToken ct)
+    {
+        var quote = await (
+            from q in db.PurchaseEvaluationQuotes
+            join d in db.PurchaseEvaluationDetails on q.PurchaseEvaluationDetailId equals d.Id
+            where q.Id == request.QuoteId && d.PurchaseEvaluationId == request.PurchaseEvaluationId
+            select q).FirstOrDefaultAsync(ct)
+            ?? throw new NotFoundException("PurchaseEvaluationQuote", request.QuoteId);
+
+        db.PurchaseEvaluationQuotes.Remove(quote);
+        await db.SaveChangesAsync(ct);
+    }
+}
+
+// ========== Select winner (NCC được chọn tổng thể) ==========
+
+public record SelectPurchaseEvaluationWinnerCommand(Guid PurchaseEvaluationId, Guid SupplierId) : IRequest;
+
+public class SelectPurchaseEvaluationWinnerCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser) : IRequestHandler<SelectPurchaseEvaluationWinnerCommand>
+{
+    public async Task Handle(SelectPurchaseEvaluationWinnerCommand request, CancellationToken ct)
+    {
+        var entity = await db.PurchaseEvaluations.FirstOrDefaultAsync(x => x.Id == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.PurchaseEvaluationId);
+
+        _ = await db.Suppliers.FirstOrDefaultAsync(s => s.Id == request.SupplierId, ct)
+            ?? throw new NotFoundException("Supplier", request.SupplierId);
+
+        // Verify supplier nằm trong danh sách phiếu
+        var hasSupplier = await db.PurchaseEvaluationSuppliers
+            .AnyAsync(s => s.PurchaseEvaluationId == request.PurchaseEvaluationId && s.SupplierId == request.SupplierId, ct);
+        if (!hasSupplier) throw new ConflictException("NCC chưa được thêm vào phiếu đánh giá.");
+
+        entity.SelectedSupplierId = request.SupplierId;
+
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = entity.Id,
+            EntityType = PurchaseEvaluationEntityType.Header,
+            Action = ChangelogAction.Update,
+            PhaseAtChange = entity.Phase,
+            UserId = currentUser.UserId,
+            Summary = "Chọn NCC trúng thầu",
+        });
+
+        await db.SaveChangesAsync(ct);
+    }
+}

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

@@ -0,0 +1,440 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.EntityFrameworkCore;
+using SolutionErp.Application.Common.Exceptions;
+using SolutionErp.Application.Common.Interfaces;
+using SolutionErp.Application.Common.Models;
+using SolutionErp.Application.PurchaseEvaluations.Dtos;
+using SolutionErp.Application.PurchaseEvaluations.Services;
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.Identity;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations;
+
+// ========== CREATE ==========
+
+public record CreatePurchaseEvaluationCommand(
+    PurchaseEvaluationType Type,
+    string TenGoiThau,
+    Guid ProjectId,
+    Guid? DepartmentId,
+    string? DiaDiem,
+    string? MoTa,
+    string? PaymentTerms) : IRequest<Guid>;
+
+public class CreatePurchaseEvaluationCommandValidator : AbstractValidator<CreatePurchaseEvaluationCommand>
+{
+    public CreatePurchaseEvaluationCommandValidator()
+    {
+        RuleFor(x => x.Type).IsInEnum();
+        RuleFor(x => x.TenGoiThau).NotEmpty().MaximumLength(500);
+        RuleFor(x => x.ProjectId).NotEmpty();
+        RuleFor(x => x.DiaDiem).MaximumLength(500);
+        RuleFor(x => x.MoTa).MaximumLength(2000);
+    }
+}
+
+public class CreatePurchaseEvaluationCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser,
+    IPurchaseEvaluationWorkflowService workflow) : IRequestHandler<CreatePurchaseEvaluationCommand, Guid>
+{
+    public async Task<Guid> Handle(CreatePurchaseEvaluationCommand request, CancellationToken ct)
+    {
+        _ = await db.Projects.FirstOrDefaultAsync(p => p.Id == request.ProjectId, ct)
+            ?? throw new NotFoundException("Project", request.ProjectId);
+
+        var activeWfId = await db.PurchaseEvaluationWorkflowDefinitions.AsNoTracking()
+            .Where(w => w.EvaluationType == request.Type && w.IsActive)
+            .Select(w => (Guid?)w.Id)
+            .FirstOrDefaultAsync(ct);
+
+        var entity = new PurchaseEvaluation
+        {
+            Type = request.Type,
+            Phase = PurchaseEvaluationPhase.DangSoanThao,
+            TenGoiThau = request.TenGoiThau,
+            ProjectId = request.ProjectId,
+            DepartmentId = request.DepartmentId,
+            DiaDiem = request.DiaDiem,
+            MoTa = request.MoTa,
+            DrafterUserId = currentUser.UserId,
+            WorkflowDefinitionId = activeWfId,
+            PaymentTerms = request.PaymentTerms,
+            SlaDeadline = DateTime.UtcNow.Add(
+                workflow.GetPhaseSla(PurchaseEvaluationPhase.DangSoanThao) ?? TimeSpan.FromDays(3)),
+        };
+
+        // Auto-gen MaPhieu đơn giản PE-YYYYMM-XXXX (4 digit random) — format sau
+        entity.MaPhieu = $"PE-{DateTime.UtcNow:yyyyMM}-{Random.Shared.Next(1000, 9999)}";
+
+        db.PurchaseEvaluations.Add(entity);
+
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = entity.Id,
+            EntityType = PurchaseEvaluationEntityType.Header,
+            Action = ChangelogAction.Insert,
+            PhaseAtChange = entity.Phase,
+            UserId = currentUser.UserId,
+            Summary = $"Tạo phiếu {entity.MaPhieu} — {entity.TenGoiThau}",
+        });
+
+        await db.SaveChangesAsync(ct);
+        return entity.Id;
+    }
+}
+
+// ========== UPDATE draft ==========
+
+public record UpdatePurchaseEvaluationDraftCommand(
+    Guid Id,
+    string TenGoiThau,
+    string? DiaDiem,
+    string? MoTa,
+    string? PaymentTerms) : IRequest;
+
+public class UpdatePurchaseEvaluationDraftCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser) : IRequestHandler<UpdatePurchaseEvaluationDraftCommand>
+{
+    public async Task Handle(UpdatePurchaseEvaluationDraftCommand request, CancellationToken ct)
+    {
+        var entity = await db.PurchaseEvaluations.FirstOrDefaultAsync(x => x.Id == request.Id, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.Id);
+
+        if (entity.Phase != PurchaseEvaluationPhase.DangSoanThao)
+            throw new ConflictException("Chỉ sửa được phiếu khi ở phase Đang soạn thảo.");
+
+        entity.TenGoiThau = request.TenGoiThau;
+        entity.DiaDiem = request.DiaDiem;
+        entity.MoTa = request.MoTa;
+        entity.PaymentTerms = request.PaymentTerms;
+
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = entity.Id,
+            EntityType = PurchaseEvaluationEntityType.Header,
+            Action = ChangelogAction.Update,
+            PhaseAtChange = entity.Phase,
+            UserId = currentUser.UserId,
+            Summary = "Cập nhật thông tin phiếu",
+        });
+
+        await db.SaveChangesAsync(ct);
+    }
+}
+
+// ========== TRANSITION ==========
+
+public record TransitionPurchaseEvaluationCommand(
+    Guid Id,
+    PurchaseEvaluationPhase TargetPhase,
+    ApprovalDecision Decision,
+    string? Comment) : IRequest;
+
+public class TransitionPurchaseEvaluationCommandValidator : AbstractValidator<TransitionPurchaseEvaluationCommand>
+{
+    public TransitionPurchaseEvaluationCommandValidator()
+    {
+        RuleFor(x => x.Id).NotEmpty();
+        RuleFor(x => x.TargetPhase).IsInEnum();
+        RuleFor(x => x.Decision).IsInEnum();
+        RuleFor(x => x.Comment).MaximumLength(1000);
+    }
+}
+
+public class TransitionPurchaseEvaluationCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser,
+    IPurchaseEvaluationWorkflowService workflow) : IRequestHandler<TransitionPurchaseEvaluationCommand>
+{
+    public async Task Handle(TransitionPurchaseEvaluationCommand request, CancellationToken ct)
+    {
+        if (!currentUser.IsAuthenticated || currentUser.UserId is null)
+            throw new UnauthorizedException();
+
+        var entity = await db.PurchaseEvaluations.FirstOrDefaultAsync(x => x.Id == request.Id, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.Id);
+
+        await workflow.TransitionAsync(
+            entity,
+            request.TargetPhase,
+            currentUser.UserId,
+            currentUser.Roles,
+            request.Decision,
+            request.Comment,
+            ct);
+    }
+}
+
+// ========== LIST ==========
+
+public record ListPurchaseEvaluationsQuery(
+    PurchaseEvaluationType? Type = null,
+    PurchaseEvaluationPhase? Phase = null,
+    Guid? ProjectId = null) : PagedRequest, IRequest<PagedResult<PurchaseEvaluationListItemDto>>;
+
+public class ListPurchaseEvaluationsQueryHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser) : IRequestHandler<ListPurchaseEvaluationsQuery, PagedResult<PurchaseEvaluationListItemDto>>
+{
+    public async Task<PagedResult<PurchaseEvaluationListItemDto>> Handle(
+        ListPurchaseEvaluationsQuery request, CancellationToken ct)
+    {
+        var q = from e in db.PurchaseEvaluations.AsNoTracking()
+                join p in db.Projects.AsNoTracking() on e.ProjectId equals p.Id
+                join s in db.Suppliers.AsNoTracking() on e.SelectedSupplierId equals s.Id into sj
+                from s in sj.DefaultIfEmpty()
+                select new { e, p, s };
+
+        // IDOR: non-admin chỉ thấy phiếu mình là Drafter hoặc role eligible phase
+        if (!currentUser.Roles.Contains(AppRoles.Admin))
+        {
+            var userId = currentUser.UserId;
+            var eligiblePhases = GetEligiblePhases(currentUser.Roles);
+            q = q.Where(x => x.e.DrafterUserId == userId || eligiblePhases.Contains(x.e.Phase));
+        }
+
+        if (request.Type is not null) q = q.Where(x => x.e.Type == request.Type);
+        if (request.Phase is not null) q = q.Where(x => x.e.Phase == request.Phase);
+        if (request.ProjectId is not null) q = q.Where(x => x.e.ProjectId == request.ProjectId);
+
+        if (!string.IsNullOrWhiteSpace(request.Search))
+        {
+            var s = request.Search.Trim();
+            q = q.Where(x =>
+                (x.e.MaPhieu != null && x.e.MaPhieu.Contains(s)) ||
+                x.e.TenGoiThau.Contains(s) ||
+                x.p.Name.Contains(s));
+        }
+
+        q = request.SortDesc ? q.OrderByDescending(x => x.e.CreatedAt) : q.OrderBy(x => x.e.CreatedAt);
+
+        var total = await q.CountAsync(ct);
+        var items = await q
+            .Skip((request.Page - 1) * request.PageSize).Take(request.PageSize)
+            .Select(x => new PurchaseEvaluationListItemDto(
+                x.e.Id, x.e.MaPhieu, x.e.TenGoiThau, x.e.Type, x.e.Phase,
+                x.e.ProjectId, x.p.Name,
+                x.e.SelectedSupplierId, x.s != null ? x.s.Name : null,
+                x.e.ContractId, x.e.SlaDeadline, x.e.CreatedAt))
+            .ToListAsync(ct);
+
+        return new PagedResult<PurchaseEvaluationListItemDto>(items, total, request.Page, request.PageSize);
+    }
+
+    internal static List<PurchaseEvaluationPhase> GetEligiblePhases(IReadOnlyList<string> userRoles)
+    {
+        var phases = new HashSet<PurchaseEvaluationPhase>();
+        void AddIfAny(string[] required, params PurchaseEvaluationPhase[] toAdd)
+        {
+            if (userRoles.Any(r => required.Contains(r)))
+                foreach (var p in toAdd) phases.Add(p);
+        }
+        AddIfAny([AppRoles.Drafter, AppRoles.DeptManager], PurchaseEvaluationPhase.DangSoanThao);
+        AddIfAny([AppRoles.Procurement], PurchaseEvaluationPhase.ChoPurchasing);
+        AddIfAny([AppRoles.ProjectManager], PurchaseEvaluationPhase.ChoDuAn);
+        AddIfAny([AppRoles.CostControl], PurchaseEvaluationPhase.ChoCCM);
+        AddIfAny([AppRoles.Director, AppRoles.AuthorizedSigner],
+            PurchaseEvaluationPhase.ChoCEODuyetPA, PurchaseEvaluationPhase.ChoCEODuyetNCC);
+        return phases.ToList();
+    }
+}
+
+// ========== INBOX ==========
+
+public record GetMyPurchaseEvaluationInboxQuery(PurchaseEvaluationType? Type = null)
+    : IRequest<List<PurchaseEvaluationListItemDto>>;
+
+public class GetMyPurchaseEvaluationInboxQueryHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser) : IRequestHandler<GetMyPurchaseEvaluationInboxQuery, List<PurchaseEvaluationListItemDto>>
+{
+    public async Task<List<PurchaseEvaluationListItemDto>> Handle(
+        GetMyPurchaseEvaluationInboxQuery request, CancellationToken ct)
+    {
+        if (!currentUser.IsAuthenticated) throw new UnauthorizedException();
+
+        var userRoles = currentUser.Roles;
+        var isAdmin = userRoles.Contains(AppRoles.Admin);
+        var eligiblePhases = isAdmin
+            ? [
+                PurchaseEvaluationPhase.DangSoanThao,
+                PurchaseEvaluationPhase.ChoPurchasing,
+                PurchaseEvaluationPhase.ChoDuAn,
+                PurchaseEvaluationPhase.ChoCCM,
+                PurchaseEvaluationPhase.ChoCEODuyetPA,
+                PurchaseEvaluationPhase.ChoCEODuyetNCC,
+            ]
+            : ListPurchaseEvaluationsQueryHandler.GetEligiblePhases(userRoles);
+
+        if (eligiblePhases.Count == 0) return [];
+
+        var q = from e in db.PurchaseEvaluations.AsNoTracking()
+                join p in db.Projects.AsNoTracking() on e.ProjectId equals p.Id
+                join s in db.Suppliers.AsNoTracking() on e.SelectedSupplierId equals s.Id into sj
+                from s in sj.DefaultIfEmpty()
+                where eligiblePhases.Contains(e.Phase)
+                select new { e, p, s };
+
+        if (request.Type is not null) q = q.Where(x => x.e.Type == request.Type);
+
+        return await q
+            .OrderBy(x => x.e.SlaDeadline ?? DateTime.MaxValue)
+            .Select(x => new PurchaseEvaluationListItemDto(
+                x.e.Id, x.e.MaPhieu, x.e.TenGoiThau, x.e.Type, x.e.Phase,
+                x.e.ProjectId, x.p.Name,
+                x.e.SelectedSupplierId, x.s != null ? x.s.Name : null,
+                x.e.ContractId, x.e.SlaDeadline, x.e.CreatedAt))
+            .Take(100)
+            .ToListAsync(ct);
+    }
+}
+
+// ========== GET detail bundle ==========
+
+public record GetPurchaseEvaluationQuery(Guid Id) : IRequest<PurchaseEvaluationDetailBundleDto>;
+
+public class GetPurchaseEvaluationQueryHandler(
+    IApplicationDbContext db,
+    UserManager<User> userManager,
+    ICurrentUser currentUser) : IRequestHandler<GetPurchaseEvaluationQuery, PurchaseEvaluationDetailBundleDto>
+{
+    public async Task<PurchaseEvaluationDetailBundleDto> Handle(
+        GetPurchaseEvaluationQuery request, CancellationToken ct)
+    {
+        var e = await db.PurchaseEvaluations.AsNoTracking()
+            .Include(x => x.Suppliers)
+            .Include(x => x.Details).ThenInclude(d => d.Quotes)
+            .Include(x => x.Approvals)
+            .FirstOrDefaultAsync(x => x.Id == request.Id, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.Id);
+
+        var isAdmin = currentUser.Roles.Contains(AppRoles.Admin);
+        if (!isAdmin)
+        {
+            var isDrafter = e.DrafterUserId == currentUser.UserId;
+            var eligiblePhases = ListPurchaseEvaluationsQueryHandler.GetEligiblePhases(currentUser.Roles);
+            if (!isDrafter && !eligiblePhases.Contains(e.Phase))
+                throw new ForbiddenException("Bạn không có quyền xem phiếu này.");
+        }
+
+        var project = await db.Projects.AsNoTracking().FirstOrDefaultAsync(p => p.Id == e.ProjectId, ct);
+        var department = e.DepartmentId is null ? null : await db.Departments.AsNoTracking().FirstOrDefaultAsync(d => d.Id == e.DepartmentId, ct);
+        var selectedSupplier = e.SelectedSupplierId is null ? null : await db.Suppliers.AsNoTracking().FirstOrDefaultAsync(s => s.Id == e.SelectedSupplierId, ct);
+
+        // Load supplier names for PE suppliers + approver names
+        var supplierIds = e.Suppliers.Select(s => s.SupplierId).ToList();
+        var suppliers = await db.Suppliers.AsNoTracking().Where(s => supplierIds.Contains(s.Id))
+            .ToDictionaryAsync(s => s.Id, s => s.Name, ct);
+
+        var userIds = new HashSet<Guid>();
+        if (e.DrafterUserId is Guid did) userIds.Add(did);
+        foreach (var a in e.Approvals) if (a.ApproverUserId is Guid aid) userIds.Add(aid);
+        var users = await userManager.Users.AsNoTracking()
+            .Where(u => userIds.Contains(u.Id))
+            .ToDictionaryAsync(u => u.Id, u => u.FullName, ct);
+
+        // Resolve workflow policy
+        PurchaseEvaluationPolicy policy;
+        if (e.WorkflowDefinitionId is Guid wfId)
+        {
+            var def = await db.PurchaseEvaluationWorkflowDefinitions.AsNoTracking()
+                .Include(d => d.Steps.OrderBy(s => s.Order))
+                    .ThenInclude(s => s.Approvers)
+                .FirstOrDefaultAsync(d => d.Id == wfId, ct);
+            policy = def is not null
+                ? PurchaseEvaluationPolicyRegistry.FromDefinition(def)
+                : PurchaseEvaluationPolicyRegistry.ForEvaluation(e);
+        }
+        else
+        {
+            policy = PurchaseEvaluationPolicyRegistry.ForEvaluation(e);
+        }
+
+        return new PurchaseEvaluationDetailBundleDto(
+            e.Id, e.MaPhieu, e.Type, e.Phase, e.TenGoiThau, e.DiaDiem, e.MoTa,
+            e.ProjectId, project?.Name ?? "",
+            e.DepartmentId, department?.Name,
+            e.DrafterUserId, e.DrafterUserId is Guid d && users.TryGetValue(d, out var dn) ? dn : null,
+            e.SelectedSupplierId, selectedSupplier?.Name,
+            e.ContractId,
+            e.PaymentTerms, e.SlaDeadline, e.CreatedAt, e.UpdatedAt,
+            e.Suppliers
+                .OrderBy(s => s.Order)
+                .Select(s => new PurchaseEvaluationSupplierDto(
+                    s.Id, s.SupplierId,
+                    suppliers.TryGetValue(s.SupplierId, out var sn) ? sn : "",
+                    s.DisplayName, s.ContactName, s.ContactEmail, s.ContactPhone,
+                    s.PaymentTermText, s.Note, s.Order))
+                .ToList(),
+            e.Details
+                .OrderBy(d => d.Order)
+                .Select(d => new PurchaseEvaluationDetailDto(
+                    d.Id, d.GroupCode, d.GroupName, d.ItemCode, d.NoiDung, d.DonViTinh,
+                    d.KhoiLuongNganSach, d.KhoiLuongThiCong, d.DonGiaNganSach, d.ThanhTienNganSach,
+                    d.Order, d.GhiChu,
+                    d.Quotes.Select(q => new PurchaseEvaluationQuoteDto(
+                        q.Id, q.PurchaseEvaluationDetailId, q.PurchaseEvaluationSupplierId,
+                        q.BgVat, q.ChuaVat, q.ThanhTien, q.IsSelected, q.Note)).ToList()))
+                .ToList(),
+            e.Approvals
+                .OrderBy(a => a.ApprovedAt)
+                .Select(a => new PurchaseEvaluationApprovalDto(
+                    a.Id, a.FromPhase, a.ToPhase, a.ApproverUserId,
+                    a.ApproverUserId is Guid uid && users.TryGetValue(uid, out var an) ? an : null,
+                    a.Decision, a.Comment, a.ApprovedAt))
+                .ToList(),
+            new PurchaseEvaluationWorkflowSummaryDto(
+                policy.Name, policy.Description,
+                policy.ActivePhases.ToList(),
+                policy.NextPhasesFrom(e.Phase).ToList()));
+    }
+}
+
+// ========== DELETE ==========
+
+public record DeletePurchaseEvaluationCommand(Guid Id) : IRequest;
+
+public class DeletePurchaseEvaluationCommandHandler(
+    IApplicationDbContext db) : IRequestHandler<DeletePurchaseEvaluationCommand>
+{
+    public async Task Handle(DeletePurchaseEvaluationCommand request, CancellationToken ct)
+    {
+        var entity = await db.PurchaseEvaluations.FirstOrDefaultAsync(x => x.Id == request.Id, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.Id);
+
+        if (entity.Phase != PurchaseEvaluationPhase.DangSoanThao
+            && entity.Phase != PurchaseEvaluationPhase.TuChoi)
+            throw new ConflictException("Chỉ xóa được phiếu ở phase Soạn thảo hoặc Từ chối.");
+
+        db.PurchaseEvaluations.Remove(entity);
+        await db.SaveChangesAsync(ct);
+    }
+}
+
+// ========== CHANGELOG list ==========
+
+public record ListPurchaseEvaluationChangelogsQuery(Guid PurchaseEvaluationId, int Take = 200)
+    : IRequest<List<PurchaseEvaluationChangelogDto>>;
+
+public class ListPurchaseEvaluationChangelogsQueryHandler(IApplicationDbContext db)
+    : IRequestHandler<ListPurchaseEvaluationChangelogsQuery, List<PurchaseEvaluationChangelogDto>>
+{
+    public async Task<List<PurchaseEvaluationChangelogDto>> Handle(
+        ListPurchaseEvaluationChangelogsQuery request, CancellationToken ct)
+    {
+        return await db.PurchaseEvaluationChangelogs.AsNoTracking()
+            .Where(c => c.PurchaseEvaluationId == request.PurchaseEvaluationId)
+            .OrderByDescending(c => c.CreatedAt)
+            .Take(request.Take)
+            .Select(c => new PurchaseEvaluationChangelogDto(
+                c.Id, c.EntityType, c.EntityId, c.Action, c.PhaseAtChange,
+                c.UserId, c.UserName, c.Summary, c.FieldChangesJson, c.ContextNote,
+                c.CreatedAt))
+            .ToListAsync(ct);
+    }
+}

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

@@ -0,0 +1,137 @@
+using FluentValidation;
+using MediatR;
+using Microsoft.EntityFrameworkCore;
+using SolutionErp.Application.Common.Exceptions;
+using SolutionErp.Application.Common.Interfaces;
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations;
+
+// Add NCC vào phiếu đánh giá (section II + E của form) — admin/drafter làm
+// ở phase soạn thảo.
+public record AddPurchaseEvaluationSupplierCommand(
+    Guid PurchaseEvaluationId,
+    Guid SupplierId,
+    string? DisplayName,
+    string? ContactName,
+    string? ContactEmail,
+    string? ContactPhone,
+    string? PaymentTermText,
+    string? Note) : IRequest<Guid>;
+
+public class AddPurchaseEvaluationSupplierCommandValidator : AbstractValidator<AddPurchaseEvaluationSupplierCommand>
+{
+    public AddPurchaseEvaluationSupplierCommandValidator()
+    {
+        RuleFor(x => x.PurchaseEvaluationId).NotEmpty();
+        RuleFor(x => x.SupplierId).NotEmpty();
+        RuleFor(x => x.DisplayName).MaximumLength(200);
+        RuleFor(x => x.ContactName).MaximumLength(200);
+        RuleFor(x => x.ContactEmail).MaximumLength(200);
+        RuleFor(x => x.ContactPhone).MaximumLength(50);
+        RuleFor(x => x.PaymentTermText).MaximumLength(200);
+        RuleFor(x => x.Note).MaximumLength(500);
+    }
+}
+
+public class AddPurchaseEvaluationSupplierCommandHandler(
+    IApplicationDbContext db,
+    ICurrentUser currentUser) : IRequestHandler<AddPurchaseEvaluationSupplierCommand, Guid>
+{
+    public async Task<Guid> Handle(AddPurchaseEvaluationSupplierCommand request, CancellationToken ct)
+    {
+        var evaluation = await db.PurchaseEvaluations.FirstOrDefaultAsync(x => x.Id == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluation", request.PurchaseEvaluationId);
+
+        _ = await db.Suppliers.FirstOrDefaultAsync(s => s.Id == request.SupplierId, ct)
+            ?? throw new NotFoundException("Supplier", request.SupplierId);
+
+        var dup = await db.PurchaseEvaluationSuppliers
+            .AnyAsync(s => s.PurchaseEvaluationId == request.PurchaseEvaluationId && s.SupplierId == request.SupplierId, ct);
+        if (dup) throw new ConflictException("NCC đã được thêm vào phiếu.");
+
+        var maxOrder = await db.PurchaseEvaluationSuppliers
+            .Where(s => s.PurchaseEvaluationId == request.PurchaseEvaluationId)
+            .Select(s => (int?)s.Order)
+            .MaxAsync(ct);
+
+        var entity = new PurchaseEvaluationSupplier
+        {
+            PurchaseEvaluationId = request.PurchaseEvaluationId,
+            SupplierId = request.SupplierId,
+            DisplayName = request.DisplayName,
+            ContactName = request.ContactName,
+            ContactEmail = request.ContactEmail,
+            ContactPhone = request.ContactPhone,
+            PaymentTermText = request.PaymentTermText,
+            Note = request.Note,
+            Order = (maxOrder ?? 0) + 1,
+        };
+        db.PurchaseEvaluationSuppliers.Add(entity);
+
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = request.PurchaseEvaluationId,
+            EntityType = PurchaseEvaluationEntityType.Supplier,
+            EntityId = entity.Id,
+            Action = ChangelogAction.Insert,
+            PhaseAtChange = evaluation.Phase,
+            UserId = currentUser.UserId,
+            Summary = $"Thêm NCC {request.DisplayName ?? "#" + request.SupplierId.ToString()[..8]}",
+        });
+
+        await db.SaveChangesAsync(ct);
+        return entity.Id;
+    }
+}
+
+public record UpdatePurchaseEvaluationSupplierCommand(
+    Guid PurchaseEvaluationId,
+    Guid SupplierRowId,
+    string? DisplayName,
+    string? ContactName,
+    string? ContactEmail,
+    string? ContactPhone,
+    string? PaymentTermText,
+    string? Note) : IRequest;
+
+public class UpdatePurchaseEvaluationSupplierCommandHandler(
+    IApplicationDbContext db) : IRequestHandler<UpdatePurchaseEvaluationSupplierCommand>
+{
+    public async Task Handle(UpdatePurchaseEvaluationSupplierCommand request, CancellationToken ct)
+    {
+        var row = await db.PurchaseEvaluationSuppliers
+            .FirstOrDefaultAsync(s => s.Id == request.SupplierRowId && s.PurchaseEvaluationId == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluationSupplier", request.SupplierRowId);
+
+        row.DisplayName = request.DisplayName;
+        row.ContactName = request.ContactName;
+        row.ContactEmail = request.ContactEmail;
+        row.ContactPhone = request.ContactPhone;
+        row.PaymentTermText = request.PaymentTermText;
+        row.Note = request.Note;
+
+        await db.SaveChangesAsync(ct);
+    }
+}
+
+public record RemovePurchaseEvaluationSupplierCommand(Guid PurchaseEvaluationId, Guid SupplierRowId) : IRequest;
+
+public class RemovePurchaseEvaluationSupplierCommandHandler(
+    IApplicationDbContext db) : IRequestHandler<RemovePurchaseEvaluationSupplierCommand>
+{
+    public async Task Handle(RemovePurchaseEvaluationSupplierCommand request, CancellationToken ct)
+    {
+        var row = await db.PurchaseEvaluationSuppliers
+            .FirstOrDefaultAsync(s => s.Id == request.SupplierRowId && s.PurchaseEvaluationId == request.PurchaseEvaluationId, ct)
+            ?? throw new NotFoundException("PurchaseEvaluationSupplier", request.SupplierRowId);
+
+        // Block nếu có Quote row reference (FK Restrict) — user phải xóa quote trước
+        var hasQuotes = await db.PurchaseEvaluationQuotes.AnyAsync(q => q.PurchaseEvaluationSupplierId == row.Id, ct);
+        if (hasQuotes) throw new ConflictException("Không thể xóa NCC khi còn báo giá. Xóa báo giá trước.");
+
+        db.PurchaseEvaluationSuppliers.Remove(row);
+        await db.SaveChangesAsync(ct);
+    }
+}

src/Backend/SolutionErp.Application/PurchaseEvaluations/Services/IPurchaseEvaluationWorkflowService.cs

@@ -0,0 +1,20 @@
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Application.PurchaseEvaluations.Services;
+
+public interface IPurchaseEvaluationWorkflowService
+{
+    // Kiểm tra + thực hiện transition. Throw ForbiddenException nếu không hợp lệ.
+    // Tự tạo PurchaseEvaluationApproval + update Phase + SlaDeadline.
+    Task TransitionAsync(
+        PurchaseEvaluation evaluation,
+        PurchaseEvaluationPhase targetPhase,
+        Guid? actorUserId,
+        IReadOnlyList<string> actorRoles,
+        ApprovalDecision decision,
+        string? comment,
+        CancellationToken ct = default);
+
+    TimeSpan? GetPhaseSla(PurchaseEvaluationPhase phase);
+}

src/Backend/SolutionErp.Domain/Identity/MenuKeys.cs

@@ -42,13 +42,35 @@ public static class MenuKeys
     // → mở /system/workflows/{typeCode} (filter theo type thay vì tab).
     public static string WorkflowTypeLeaf(string typeCode) => $"Wf_{typeCode}";
 
+    // ============================================================
+    // Module Duyệt NCC (tiền-HĐ) — Pe_* prefix. 2 EvaluationType:
+    //   DuyetNcc (A, NccOnly 3-step) + DuyetNccPhuongAn (B, NccWithPlan 5-step).
+    // Mỗi type có 3 action leaf (Danh sách / Thao tác / Duyệt) + 1 group.
+    // Workflow admin cho PE ở /system/pe-workflows/:typeCode.
+    // ============================================================
+    public const string PurchaseEvaluations = "PurchaseEvaluations";          // root group
+    public const string PeWorkflows = "PeWorkflows";                           // workflow admin root
+
+    public static readonly string[] PurchaseEvaluationTypeCodes =
+        ["DuyetNcc", "DuyetNccPhuongAn"];
+
+    public static string PurchaseEvaluationGroup(string typeCode) => $"Pe_{typeCode}";
+    public static string PurchaseEvaluationList(string typeCode) => $"Pe_{typeCode}_List";
+    public static string PurchaseEvaluationCreate(string typeCode) => $"Pe_{typeCode}_Create";
+    public static string PurchaseEvaluationPending(string typeCode) => $"Pe_{typeCode}_Pending";
+
+    // Workflow admin leaf per PE type — dưới PeWorkflows, click leaf mở
+    // /system/pe-workflows/{typeCode}
+    public static string PeWorkflowTypeLeaf(string typeCode) => $"PeWf_{typeCode}";
+
     public static readonly string[] All =
     [
         Dashboard,
         Master, Suppliers, Projects, Departments,
         Catalogs, CatalogUnits, CatalogMaterials, CatalogServices, CatalogWorkItems,
         Contracts, Forms, Reports,
-        System, Users, Roles, Permissions, Workflows,
+        PurchaseEvaluations,
+        System, Users, Roles, Permissions, Workflows, PeWorkflows,
     ];
 
     public static readonly string[] Actions = ["Read", "Create", "Update", "Delete"];

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

@@ -0,0 +1,36 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// Aggregate root cho phiếu Duyệt NCC — module tiền-HĐ.
+// Sau khi phê duyệt xong (Phase=DaDuyet) user click "Tạo HĐ từ phiếu" →
+// kế thừa Details/Quotes sang Contract + ContractDetails.
+public class PurchaseEvaluation : AuditableEntity
+{
+    public string? MaPhieu { get; set; }                            // Auto-gen khi create (format tính sau)
+    public PurchaseEvaluationType Type { get; set; }
+    public PurchaseEvaluationPhase Phase { get; set; } = PurchaseEvaluationPhase.DangSoanThao;
+
+    public string TenGoiThau { get; set; } = string.Empty;          // "Cung cấp bê tông"
+    public Guid ProjectId { get; set; }                              // Dự án (FK Projects)
+    public Guid? DepartmentId { get; set; }
+    public Guid? DrafterUserId { get; set; }                         // QS/NV.PB soạn
+    public string? DiaDiem { get; set; }                             // Lô K, KCN Lộc An...
+    public string? MoTa { get; set; }
+
+    public Guid? WorkflowDefinitionId { get; set; }                  // Pinned at create — config y như HĐ
+    public DateTime? SlaDeadline { get; set; }
+    public bool SlaWarningSent { get; set; }
+
+    public Guid? SelectedSupplierId { get; set; }                    // NCC thắng — null tới khi DaDuyet
+    public string? PaymentTerms { get; set; }                        // JSON {tamUng, thanhToanTam, quyetToan, baoHanh, hanMucCongNo, danhGia}
+
+    public Guid? ContractId { get; set; }                            // FK Contracts — set khi user gen HĐ từ phiếu
+
+    public List<PurchaseEvaluationSupplier> Suppliers { get; set; } = new();
+    public List<PurchaseEvaluationDetail> Details { get; set; } = new();
+    public List<PurchaseEvaluationQuote> Quotes { get; set; } = new();
+    public List<PurchaseEvaluationApproval> Approvals { get; set; } = new();
+    public List<PurchaseEvaluationChangelog> Changelogs { get; set; } = new();
+    public List<PurchaseEvaluationAttachment> Attachments { get; set; } = new();
+}

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

@@ -0,0 +1,18 @@
+using SolutionErp.Domain.Common;
+using SolutionErp.Domain.Contracts;   // reuse ApprovalDecision enum
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// Lịch sử phê duyệt — giống ContractApproval pattern.
+public class PurchaseEvaluationApproval : BaseEntity
+{
+    public Guid PurchaseEvaluationId { get; set; }
+    public PurchaseEvaluationPhase FromPhase { get; set; }
+    public PurchaseEvaluationPhase ToPhase { get; set; }
+    public Guid? ApproverUserId { get; set; }              // null = system SLA auto
+    public ApprovalDecision Decision { get; set; }
+    public string? Comment { get; set; }
+    public DateTime ApprovedAt { get; set; }
+
+    public PurchaseEvaluation? PurchaseEvaluation { get; set; }
+}

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

@@ -0,0 +1,25 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+public enum PurchaseEvaluationAttachmentPurpose
+{
+    QuoteDocument = 1,        // File báo giá NCC gửi (PDF/xlsx)
+    RequirementSpec = 2,      // Bản vẽ/yêu cầu kỹ thuật kèm theo
+    DecisionExport = 3,       // Bản phiếu duyệt đã export
+    Other = 99,
+}
+
+public class PurchaseEvaluationAttachment : BaseEntity
+{
+    public Guid PurchaseEvaluationId { get; set; }
+    public Guid? PurchaseEvaluationSupplierId { get; set; }   // Null nếu không gắn với NCC cụ thể
+    public string FileName { get; set; } = string.Empty;
+    public string StoragePath { get; set; } = string.Empty;
+    public long FileSize { get; set; }
+    public string ContentType { get; set; } = string.Empty;
+    public PurchaseEvaluationAttachmentPurpose Purpose { get; set; }
+    public string? Note { get; set; }
+
+    public PurchaseEvaluation? PurchaseEvaluation { get; set; }
+}

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

@@ -0,0 +1,33 @@
+using SolutionErp.Domain.Common;
+using SolutionErp.Domain.Contracts;   // reuse ChangelogAction enum
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// Audit log unified cho mọi thay đổi trên phiếu — Header / Supplier / Detail
+// / Quote / Workflow / Attachment. Populate tương tự ContractChangelog qua
+// IPurchaseEvaluationChangelogService.
+public class PurchaseEvaluationChangelog : BaseEntity
+{
+    public Guid PurchaseEvaluationId { get; set; }
+    public PurchaseEvaluation? PurchaseEvaluation { get; set; }
+
+    public PurchaseEvaluationEntityType EntityType { get; set; }
+    public Guid? EntityId { get; set; }
+    public ChangelogAction Action { get; set; }
+    public PurchaseEvaluationPhase? PhaseAtChange { get; set; }
+    public Guid? UserId { get; set; }
+    public string? UserName { get; set; }
+    public string? Summary { get; set; }
+    public string? FieldChangesJson { get; set; }
+    public string? ContextNote { get; set; }
+}
+
+public enum PurchaseEvaluationEntityType
+{
+    Header = 1,
+    Supplier = 2,
+    Detail = 3,
+    Quote = 4,
+    Workflow = 5,
+    Attachment = 6,
+}

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

@@ -0,0 +1,24 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// Hạng mục so sánh giá + ngân sách (Excel III + "CHI TIẾT SO SÁNH").
+// Tách Quotes ra PurchaseEvaluationQuote để normalize N NCC × M hạng mục.
+public class PurchaseEvaluationDetail : BaseEntity
+{
+    public Guid PurchaseEvaluationId { get; set; }
+    public string GroupCode { get; set; } = string.Empty;   // "A.I", "A.II", "A.III", "A.IV"
+    public string GroupName { get; set; } = string.Empty;   // "Bê tông", "Phụ gia", "Bơm bê tông", "Vận chuyển"
+    public string? ItemCode { get; set; }                    // "DMCCC0001"
+    public string NoiDung { get; set; } = string.Empty;      // "Concrete M100"
+    public string? DonViTinh { get; set; }                   // "m3"
+    public decimal KhoiLuongNganSach { get; set; }
+    public decimal KhoiLuongThiCong { get; set; }
+    public decimal DonGiaNganSach { get; set; }              // Chưa VAT
+    public decimal ThanhTienNganSach { get; set; }           // = KL × Đơn giá (hoặc nhập tay)
+    public int Order { get; set; }
+    public string? GhiChu { get; set; }
+
+    public PurchaseEvaluation? PurchaseEvaluation { get; set; }
+    public List<PurchaseEvaluationQuote> Quotes { get; set; } = new();
+}

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

@@ -0,0 +1,20 @@
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// State machine cho phiếu Duyệt NCC (tiền-HĐ). 2 workflow khác nhau cùng
+// share state space này — A (DuyetNcc) dùng subset, B (DuyetNccPhuongAn)
+// dùng full.
+//
+// A: DangSoanThao → ChoPurchasing → ChoCCM → ChoCEODuyetNCC → DaDuyet
+// B: DangSoanThao → ChoPurchasing → ChoDuAn → ChoCCM → ChoCEODuyetPA → ChoCEODuyetNCC → DaDuyet
+// Cả 2: từ DangSoanThao có thể → TuChoi; từ mọi phase duyệt reject → DangSoanThao.
+public enum PurchaseEvaluationPhase
+{
+    DangSoanThao = 1,
+    ChoPurchasing = 2,
+    ChoDuAn = 3,               // chỉ B
+    ChoCCM = 4,
+    ChoCEODuyetPA = 5,         // chỉ B (duyệt phương án trước)
+    ChoCEODuyetNCC = 6,        // chung cả A & B — duyệt chọn đơn vị
+    DaDuyet = 7,               // terminal thành công
+    TuChoi = 99,               // terminal từ chối
+}

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

@@ -0,0 +1,203 @@
+using SolutionErp.Domain.Contracts;    // WorkflowApproverKind
+using SolutionErp.Domain.Identity;
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// Policy record cho phiếu Duyệt NCC — mirror WorkflowPolicy của HĐ nhưng
+// dùng PurchaseEvaluationPhase enum. 2 default policy hardcoded (A/B)
+// phục vụ seed + fallback khi admin chưa author định nghĩa DB.
+public sealed record PurchaseEvaluationPolicy(
+    string Name,
+    string Description,
+    IReadOnlyDictionary<(PurchaseEvaluationPhase From, PurchaseEvaluationPhase To), string[]> Transitions,
+    IReadOnlyDictionary<PurchaseEvaluationPhase, TimeSpan?> PhaseSla,
+    IReadOnlyList<PurchaseEvaluationPhase> ActivePhases,
+    IReadOnlyDictionary<(PurchaseEvaluationPhase From, PurchaseEvaluationPhase To), string[]>? UserTransitions = null)
+{
+    public bool HasPhase(PurchaseEvaluationPhase phase) => ActivePhases.Contains(phase);
+
+    public bool IsTransitionAllowed(
+        PurchaseEvaluationPhase from, PurchaseEvaluationPhase to,
+        IReadOnlyList<string> actorRoles, Guid? actorUserId = null)
+    {
+        if (!Transitions.TryGetValue((from, to), out var roles)) return false;
+        if (actorRoles.Any(r => roles.Contains(r))) return true;
+
+        if (actorUserId is null) return false;
+        if (UserTransitions is null) return false;
+        if (!UserTransitions.TryGetValue((from, to), out var userIds)) return false;
+        return userIds.Contains(actorUserId.Value.ToString());
+    }
+
+    public IReadOnlyList<PurchaseEvaluationPhase> NextPhasesFrom(PurchaseEvaluationPhase from) =>
+        Transitions.Keys.Where(k => k.From == from).Select(k => k.To).Distinct().ToList();
+}
+
+public static class PurchaseEvaluationPolicies
+{
+    private static readonly Dictionary<PurchaseEvaluationPhase, TimeSpan?> DefaultSla = new()
+    {
+        [PurchaseEvaluationPhase.DangSoanThao] = TimeSpan.FromDays(3),
+        [PurchaseEvaluationPhase.ChoPurchasing] = TimeSpan.FromDays(2),
+        [PurchaseEvaluationPhase.ChoDuAn] = TimeSpan.FromDays(2),
+        [PurchaseEvaluationPhase.ChoCCM] = TimeSpan.FromDays(2),
+        [PurchaseEvaluationPhase.ChoCEODuyetPA] = TimeSpan.FromDays(1),
+        [PurchaseEvaluationPhase.ChoCEODuyetNCC] = TimeSpan.FromDays(1),
+        [PurchaseEvaluationPhase.DaDuyet] = null,
+        [PurchaseEvaluationPhase.TuChoi] = null,
+    };
+
+    // A — DuyetNcc (3 step thực + Drafter soạn): Drafter → Purchasing → CCM → CEO
+    public static readonly PurchaseEvaluationPolicy NccOnly = new(
+        Name: "NccOnly",
+        Description: "Duyệt NCC — 3 step (Purchasing → CCM → CEO). Không cần duyệt phương án.",
+        Transitions: new Dictionary<(PurchaseEvaluationPhase, PurchaseEvaluationPhase), string[]>
+        {
+            [(PurchaseEvaluationPhase.DangSoanThao, PurchaseEvaluationPhase.ChoPurchasing)] = [AppRoles.Drafter, AppRoles.DeptManager],
+            [(PurchaseEvaluationPhase.DangSoanThao, PurchaseEvaluationPhase.TuChoi)] = [AppRoles.Drafter, AppRoles.DeptManager],
+
+            [(PurchaseEvaluationPhase.ChoPurchasing, PurchaseEvaluationPhase.ChoCCM)] = [AppRoles.Procurement],
+            [(PurchaseEvaluationPhase.ChoPurchasing, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.Procurement],
+
+            [(PurchaseEvaluationPhase.ChoCCM, PurchaseEvaluationPhase.ChoCEODuyetNCC)] = [AppRoles.CostControl],
+            [(PurchaseEvaluationPhase.ChoCCM, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.CostControl],
+
+            [(PurchaseEvaluationPhase.ChoCEODuyetNCC, PurchaseEvaluationPhase.DaDuyet)] = [AppRoles.Director, AppRoles.AuthorizedSigner],
+            [(PurchaseEvaluationPhase.ChoCEODuyetNCC, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.Director, AppRoles.AuthorizedSigner],
+        },
+        PhaseSla: DefaultSla,
+        ActivePhases:
+        [
+            PurchaseEvaluationPhase.DangSoanThao,
+            PurchaseEvaluationPhase.ChoPurchasing,
+            PurchaseEvaluationPhase.ChoCCM,
+            PurchaseEvaluationPhase.ChoCEODuyetNCC,
+            PurchaseEvaluationPhase.DaDuyet,
+            PurchaseEvaluationPhase.TuChoi,
+        ]);
+
+    // B — DuyetNccPhuongAn (5 step thực + Drafter): Drafter → Purchasing → Dự án → CCM → CEO(PA) → CEO(NCC)
+    public static readonly PurchaseEvaluationPolicy NccWithPlan = new(
+        Name: "NccWithPlan",
+        Description: "Duyệt NCC + Phương án — 5 step (Purchasing → Dự án → CCM → CEO duyệt PA → CEO duyệt NCC).",
+        Transitions: new Dictionary<(PurchaseEvaluationPhase, PurchaseEvaluationPhase), string[]>
+        {
+            [(PurchaseEvaluationPhase.DangSoanThao, PurchaseEvaluationPhase.ChoPurchasing)] = [AppRoles.Drafter, AppRoles.DeptManager],
+            [(PurchaseEvaluationPhase.DangSoanThao, PurchaseEvaluationPhase.TuChoi)] = [AppRoles.Drafter, AppRoles.DeptManager],
+
+            [(PurchaseEvaluationPhase.ChoPurchasing, PurchaseEvaluationPhase.ChoDuAn)] = [AppRoles.Procurement],
+            [(PurchaseEvaluationPhase.ChoPurchasing, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.Procurement],
+
+            [(PurchaseEvaluationPhase.ChoDuAn, PurchaseEvaluationPhase.ChoCCM)] = [AppRoles.ProjectManager],
+            [(PurchaseEvaluationPhase.ChoDuAn, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.ProjectManager],
+
+            [(PurchaseEvaluationPhase.ChoCCM, PurchaseEvaluationPhase.ChoCEODuyetPA)] = [AppRoles.CostControl],
+            [(PurchaseEvaluationPhase.ChoCCM, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.CostControl],
+
+            [(PurchaseEvaluationPhase.ChoCEODuyetPA, PurchaseEvaluationPhase.ChoCEODuyetNCC)] = [AppRoles.Director, AppRoles.AuthorizedSigner],
+            [(PurchaseEvaluationPhase.ChoCEODuyetPA, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.Director, AppRoles.AuthorizedSigner],
+
+            [(PurchaseEvaluationPhase.ChoCEODuyetNCC, PurchaseEvaluationPhase.DaDuyet)] = [AppRoles.Director, AppRoles.AuthorizedSigner],
+            [(PurchaseEvaluationPhase.ChoCEODuyetNCC, PurchaseEvaluationPhase.DangSoanThao)] = [AppRoles.Director, AppRoles.AuthorizedSigner],
+        },
+        PhaseSla: DefaultSla,
+        ActivePhases:
+        [
+            PurchaseEvaluationPhase.DangSoanThao,
+            PurchaseEvaluationPhase.ChoPurchasing,
+            PurchaseEvaluationPhase.ChoDuAn,
+            PurchaseEvaluationPhase.ChoCCM,
+            PurchaseEvaluationPhase.ChoCEODuyetPA,
+            PurchaseEvaluationPhase.ChoCEODuyetNCC,
+            PurchaseEvaluationPhase.DaDuyet,
+            PurchaseEvaluationPhase.TuChoi,
+        ]);
+}
+
+public static class PurchaseEvaluationPolicyRegistry
+{
+    public static readonly string[] AvailablePolicyNames = ["NccOnly", "NccWithPlan"];
+
+    public static PurchaseEvaluationPolicy ByName(string name) => name switch
+    {
+        "NccWithPlan" => PurchaseEvaluationPolicies.NccWithPlan,
+        _ => PurchaseEvaluationPolicies.NccOnly,
+    };
+
+    public static string DefaultPolicyNameFor(PurchaseEvaluationType type) => type switch
+    {
+        PurchaseEvaluationType.DuyetNccPhuongAn => "NccWithPlan",
+        _ => "NccOnly",
+    };
+
+    public static PurchaseEvaluationPolicy For(PurchaseEvaluationType type) =>
+        ByName(DefaultPolicyNameFor(type));
+
+    public static PurchaseEvaluationPolicy ForEvaluation(PurchaseEvaluation ev) =>
+        For(ev.Type);
+
+    // Build policy from persisted admin-authored definition (mirror
+    // WorkflowPolicyRegistry.FromDefinition for HĐ).
+    public static PurchaseEvaluationPolicy FromDefinition(PurchaseEvaluationWorkflowDefinition def)
+    {
+        var steps = def.Steps.OrderBy(s => s.Order).ToList();
+        var transitions = new Dictionary<(PurchaseEvaluationPhase From, PurchaseEvaluationPhase To), string[]>();
+        var userTransitions = new Dictionary<(PurchaseEvaluationPhase From, PurchaseEvaluationPhase To), string[]>();
+        var sla = new Dictionary<PurchaseEvaluationPhase, TimeSpan?>();
+        var activePhases = new List<PurchaseEvaluationPhase>();
+
+        PurchaseEvaluationPhase? prev = null;
+        foreach (var s in steps)
+        {
+            activePhases.Add(s.Phase);
+            sla[s.Phase] = s.SlaDays is int d ? TimeSpan.FromDays(d) : null;
+
+            var roles = s.Approvers
+                .Where(a => a.Kind == WorkflowApproverKind.Role)
+                .Select(a => a.AssignmentValue)
+                .Distinct()
+                .ToArray();
+            var hasUserKind = s.Approvers.Any(a => a.Kind == WorkflowApproverKind.User);
+            if (roles.Length == 0 && !hasUserKind) roles = [AppRoles.DeptManager];
+
+            var userIds = s.Approvers
+                .Where(a => a.Kind == WorkflowApproverKind.User)
+                .Select(a => a.AssignmentValue)
+                .Distinct()
+                .ToArray();
+
+            if (prev is not null)
+            {
+                transitions[(prev.Value, s.Phase)] = roles;
+                if (userIds.Length > 0) userTransitions[(prev.Value, s.Phase)] = userIds;
+
+                // Reject path back to Drafter (common pattern)
+                if (prev.Value != PurchaseEvaluationPhase.DangSoanThao && s.Phase != PurchaseEvaluationPhase.DangSoanThao)
+                {
+                    transitions.TryAdd((s.Phase, PurchaseEvaluationPhase.DangSoanThao), roles);
+                    if (userIds.Length > 0)
+                        userTransitions.TryAdd((s.Phase, PurchaseEvaluationPhase.DangSoanThao), userIds);
+                }
+            }
+            prev = s.Phase;
+        }
+        // First step có thể reject to TuChoi
+        if (steps.Count > 0)
+            transitions.TryAdd((steps[0].Phase, PurchaseEvaluationPhase.TuChoi),
+                [AppRoles.Drafter, AppRoles.DeptManager]);
+
+        // Terminal states always available
+        if (!activePhases.Contains(PurchaseEvaluationPhase.TuChoi))
+            activePhases.Add(PurchaseEvaluationPhase.TuChoi);
+        if (!activePhases.Contains(PurchaseEvaluationPhase.DaDuyet))
+            activePhases.Add(PurchaseEvaluationPhase.DaDuyet);
+
+        return new PurchaseEvaluationPolicy(
+            Name: $"{def.Code}-v{def.Version:D2}",
+            Description: def.Description ?? def.Name,
+            Transitions: transitions,
+            PhaseSla: sla,
+            ActivePhases: activePhases,
+            UserTransitions: userTransitions.Count > 0 ? userTransitions : null);
+    }
+}

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

@@ -0,0 +1,20 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// Báo giá N NCC × M hạng mục. 1 row = 1 NCC chào 1 hạng mục.
+// IsSelected cho per-item winner (nếu user chọn mỗi hạng mục 1 NCC khác nhau);
+// PurchaseEvaluation.SelectedSupplierId là winner tổng thể (trường hợp 1 NCC thắng toàn bộ).
+public class PurchaseEvaluationQuote : BaseEntity
+{
+    public Guid PurchaseEvaluationDetailId { get; set; }
+    public Guid PurchaseEvaluationSupplierId { get; set; }  // FK PurchaseEvaluationSuppliers
+    public decimal BgVat { get; set; }                       // Báo giá NCC gửi (đã VAT)
+    public decimal ChuaVat { get; set; }                     // Chưa VAT
+    public decimal ThanhTien { get; set; }                   // = KL × ChuaVat (tính sẵn)
+    public bool IsSelected { get; set; }                     // NCC được chọn cho hạng mục này
+    public string? Note { get; set; }
+
+    public PurchaseEvaluationDetail? Detail { get; set; }
+    public PurchaseEvaluationSupplier? Supplier { get; set; }
+}

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

@@ -0,0 +1,22 @@
+using SolutionErp.Domain.Common;
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// N:M giữa PurchaseEvaluation × Supplier (master). Lưu contact + payment
+// term per NCC (file Excel section E + cột header "TGN-30 ngày" /
+// "Tiến Phát" / ... ngay dưới bảng II). Note chứa yellow chip:
+// "ĐÃ CHỐT SO SÁNH LẦN 1/2", "ĐÀM PHÁN THÊM".
+public class PurchaseEvaluationSupplier : BaseEntity
+{
+    public Guid PurchaseEvaluationId { get; set; }
+    public Guid SupplierId { get; set; }                   // FK Suppliers master
+    public string? DisplayName { get; set; }                // Override nếu khác Supplier.Name (vd kèm term: "TGN-30 ngày")
+    public string? ContactName { get; set; }
+    public string? ContactEmail { get; set; }
+    public string? ContactPhone { get; set; }
+    public string? PaymentTermText { get; set; }            // Free text: "30 ngày", "45 ngày", "300tr"
+    public string? Note { get; set; }                        // Chip trạng thái so sánh
+    public int Order { get; set; }                          // Thứ tự cột trong bảng so sánh
+
+    public PurchaseEvaluation? PurchaseEvaluation { get; set; }
+}

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

@@ -0,0 +1,10 @@
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// 2 quy trình theo flowchart QT chọn NTP/NCC:
+//  A — NccOnly (3 step): Purchasing → CCM → CEO
+//  B — NccWithPlan (5 step): Purchasing → Dự án → CCM → CEO (PA) → CEO (NCC)
+public enum PurchaseEvaluationType
+{
+    DuyetNcc = 1,             // A
+    DuyetNccPhuongAn = 2,     // B
+}

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

@@ -0,0 +1,46 @@
+using SolutionErp.Domain.Common;
+using SolutionErp.Domain.Contracts;   // reuse WorkflowApproverKind
+
+namespace SolutionErp.Domain.PurchaseEvaluations;
+
+// Versioned workflow definition cho module Duyệt NCC — pattern giống HĐ
+// nhưng tách table riêng vì Phase là PurchaseEvaluationPhase enum (không
+// phải ContractPhase). Admin có UI /system/pe-workflows/:typeCode tương
+// tự /system/workflows/:typeCode.
+//
+// Invariant: AT MOST ONE IsActive=true per PurchaseEvaluationType tại 1
+// thời điểm. PurchaseEvaluation.WorkflowDefinitionId pin tại create →
+// phiếu cũ không bị ảnh hưởng khi admin active version mới.
+public class PurchaseEvaluationWorkflowDefinition : BaseEntity
+{
+    public string Code { get; set; } = string.Empty;             // "QT-DN-A" / "QT-DN-B" default
+    public int Version { get; set; }
+    public PurchaseEvaluationType EvaluationType { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public string? Description { get; set; }
+    public bool IsActive { get; set; }
+    public DateTime? ActivatedAt { get; set; }
+
+    public List<PurchaseEvaluationWorkflowStep> Steps { get; set; } = new();
+}
+
+public class PurchaseEvaluationWorkflowStep : BaseEntity
+{
+    public Guid PurchaseEvaluationWorkflowDefinitionId { get; set; }
+    public int Order { get; set; }
+    public PurchaseEvaluationPhase Phase { get; set; }
+    public string Name { get; set; } = string.Empty;
+    public int? SlaDays { get; set; }
+
+    public PurchaseEvaluationWorkflowDefinition? Definition { get; set; }
+    public List<PurchaseEvaluationWorkflowStepApprover> Approvers { get; set; } = new();
+}
+
+public class PurchaseEvaluationWorkflowStepApprover : BaseEntity
+{
+    public Guid PurchaseEvaluationWorkflowStepId { get; set; }
+    public WorkflowApproverKind Kind { get; set; }              // reuse Role/User enum từ Contract
+    public string AssignmentValue { get; set; } = string.Empty;
+
+    public PurchaseEvaluationWorkflowStep? Step { get; set; }
+}

src/Backend/SolutionErp.Infrastructure/DependencyInjection.cs

@@ -6,6 +6,7 @@ using SolutionErp.Application.Common.Interfaces;
 using SolutionErp.Application.Contracts.Services;
 using SolutionErp.Application.Forms.Services;
 using SolutionErp.Application.Notifications;
+using SolutionErp.Application.PurchaseEvaluations.Services;
 using SolutionErp.Application.Reports.Services;
 using SolutionErp.Domain.Identity;
 using SolutionErp.Infrastructure.Forms;
@@ -32,6 +33,7 @@ public static class DependencyInjection
         services.AddSingleton<IDocumentConverter, LibreOfficeDocumentConverter>();
         services.AddScoped<IContractCodeGenerator, ContractCodeGenerator>();
         services.AddScoped<IContractWorkflowService, ContractWorkflowService>();
+        services.AddScoped<IPurchaseEvaluationWorkflowService, PurchaseEvaluationWorkflowService>();
         services.AddScoped<IContractExcelExporter, ContractExcelExporter>();
         services.AddScoped<INotificationService, NotificationService>();
         services.AddScoped<IChangelogService, ChangelogService>();

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

@@ -8,6 +8,7 @@ using SolutionErp.Domain.Identity;
 using SolutionErp.Domain.Master;
 using SolutionErp.Domain.Master.Catalogs;
 using SolutionErp.Domain.Notifications;
+using SolutionErp.Domain.PurchaseEvaluations;
 
 namespace SolutionErp.Infrastructure.Persistence;
 
@@ -46,6 +47,17 @@ public class ApplicationDbContext
     public DbSet<NguyenTacNccDetail> NguyenTacNccDetails => Set<NguyenTacNccDetail>();
     public DbSet<NguyenTacDvDetail> NguyenTacDvDetails => Set<NguyenTacDvDetail>();
 
+    public DbSet<PurchaseEvaluation> PurchaseEvaluations => Set<PurchaseEvaluation>();
+    public DbSet<PurchaseEvaluationSupplier> PurchaseEvaluationSuppliers => Set<PurchaseEvaluationSupplier>();
+    public DbSet<PurchaseEvaluationDetail> PurchaseEvaluationDetails => Set<PurchaseEvaluationDetail>();
+    public DbSet<PurchaseEvaluationQuote> PurchaseEvaluationQuotes => Set<PurchaseEvaluationQuote>();
+    public DbSet<PurchaseEvaluationApproval> PurchaseEvaluationApprovals => Set<PurchaseEvaluationApproval>();
+    public DbSet<PurchaseEvaluationChangelog> PurchaseEvaluationChangelogs => Set<PurchaseEvaluationChangelog>();
+    public DbSet<PurchaseEvaluationAttachment> PurchaseEvaluationAttachments => Set<PurchaseEvaluationAttachment>();
+    public DbSet<PurchaseEvaluationWorkflowDefinition> PurchaseEvaluationWorkflowDefinitions => Set<PurchaseEvaluationWorkflowDefinition>();
+    public DbSet<PurchaseEvaluationWorkflowStep> PurchaseEvaluationWorkflowSteps => Set<PurchaseEvaluationWorkflowStep>();
+    public DbSet<PurchaseEvaluationWorkflowStepApprover> PurchaseEvaluationWorkflowStepApprovers => Set<PurchaseEvaluationWorkflowStepApprover>();
+
     protected override void OnModelCreating(ModelBuilder builder)
     {
         base.OnModelCreating(builder);

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

@@ -0,0 +1,205 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Infrastructure.Persistence.Configurations;
+
+public class PurchaseEvaluationConfiguration : IEntityTypeConfiguration<PurchaseEvaluation>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluation> b)
+    {
+        b.ToTable("PurchaseEvaluations");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.MaPhieu).HasMaxLength(100);
+        b.Property(x => x.Type).HasConversion<int>();
+        b.Property(x => x.Phase).HasConversion<int>();
+        b.Property(x => x.TenGoiThau).HasMaxLength(500).IsRequired();
+        b.Property(x => x.DiaDiem).HasMaxLength(500);
+        b.Property(x => x.MoTa).HasMaxLength(2000);
+        b.Property(x => x.PaymentTerms).HasColumnType("nvarchar(max)");
+
+        b.HasIndex(x => x.MaPhieu).IsUnique().HasFilter("[MaPhieu] IS NOT NULL");
+        b.HasIndex(x => new { x.Phase, x.IsDeleted });
+        b.HasIndex(x => x.ProjectId);
+        b.HasIndex(x => x.SlaDeadline);
+        b.HasIndex(x => x.WorkflowDefinitionId);
+        b.HasIndex(x => x.ContractId);
+
+        b.HasMany(x => x.Suppliers).WithOne(s => s.PurchaseEvaluation).HasForeignKey(s => s.PurchaseEvaluationId).OnDelete(DeleteBehavior.Cascade);
+        b.HasMany(x => x.Details).WithOne(d => d.PurchaseEvaluation).HasForeignKey(d => d.PurchaseEvaluationId).OnDelete(DeleteBehavior.Cascade);
+        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);
+        // Quotes không FK trực tiếp tới PurchaseEvaluation (đi qua Detail) —
+        // nhưng collection navigation có nên cần config riêng bên dưới.
+
+        b.HasQueryFilter(x => !x.IsDeleted);
+    }
+}
+
+public class PurchaseEvaluationSupplierConfiguration : IEntityTypeConfiguration<PurchaseEvaluationSupplier>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationSupplier> b)
+    {
+        b.ToTable("PurchaseEvaluationSuppliers");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.DisplayName).HasMaxLength(200);
+        b.Property(x => x.ContactName).HasMaxLength(200);
+        b.Property(x => x.ContactEmail).HasMaxLength(200);
+        b.Property(x => x.ContactPhone).HasMaxLength(50);
+        b.Property(x => x.PaymentTermText).HasMaxLength(200);
+        b.Property(x => x.Note).HasMaxLength(500);
+
+        b.HasIndex(x => new { x.PurchaseEvaluationId, x.SupplierId }).IsUnique();
+        b.HasIndex(x => x.SupplierId);
+    }
+}
+
+public class PurchaseEvaluationDetailConfiguration : IEntityTypeConfiguration<PurchaseEvaluationDetail>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationDetail> b)
+    {
+        b.ToTable("PurchaseEvaluationDetails");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.GroupCode).HasMaxLength(50).IsRequired();
+        b.Property(x => x.GroupName).HasMaxLength(200).IsRequired();
+        b.Property(x => x.ItemCode).HasMaxLength(100);
+        b.Property(x => x.NoiDung).HasMaxLength(500).IsRequired();
+        b.Property(x => x.DonViTinh).HasMaxLength(50);
+        b.Property(x => x.GhiChu).HasMaxLength(1000);
+        b.Property(x => x.KhoiLuongNganSach).HasPrecision(18, 4);
+        b.Property(x => x.KhoiLuongThiCong).HasPrecision(18, 4);
+        b.Property(x => x.DonGiaNganSach).HasPrecision(18, 2);
+        b.Property(x => x.ThanhTienNganSach).HasPrecision(18, 2);
+
+        b.HasIndex(x => new { x.PurchaseEvaluationId, x.Order });
+
+        b.HasMany(x => x.Quotes).WithOne(q => q.Detail).HasForeignKey(q => q.PurchaseEvaluationDetailId).OnDelete(DeleteBehavior.Cascade);
+    }
+}
+
+public class PurchaseEvaluationQuoteConfiguration : IEntityTypeConfiguration<PurchaseEvaluationQuote>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationQuote> b)
+    {
+        b.ToTable("PurchaseEvaluationQuotes");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.BgVat).HasPrecision(18, 2);
+        b.Property(x => x.ChuaVat).HasPrecision(18, 2);
+        b.Property(x => x.ThanhTien).HasPrecision(18, 2);
+        b.Property(x => x.Note).HasMaxLength(500);
+
+        b.HasIndex(x => new { x.PurchaseEvaluationDetailId, x.PurchaseEvaluationSupplierId }).IsUnique();
+
+        // Quote → Supplier (restrict — không xóa Supplier-row khỏi phiếu nếu còn quote)
+        b.HasOne(x => x.Supplier)
+            .WithMany()
+            .HasForeignKey(x => x.PurchaseEvaluationSupplierId)
+            .OnDelete(DeleteBehavior.Restrict);
+    }
+}
+
+public class PurchaseEvaluationApprovalConfiguration : IEntityTypeConfiguration<PurchaseEvaluationApproval>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationApproval> b)
+    {
+        b.ToTable("PurchaseEvaluationApprovals");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.FromPhase).HasConversion<int>();
+        b.Property(x => x.ToPhase).HasConversion<int>();
+        b.Property(x => x.Decision).HasConversion<int>();
+        b.Property(x => x.Comment).HasMaxLength(1000);
+
+        b.HasIndex(x => new { x.PurchaseEvaluationId, x.ApprovedAt });
+    }
+}
+
+public class PurchaseEvaluationChangelogConfiguration : IEntityTypeConfiguration<PurchaseEvaluationChangelog>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationChangelog> b)
+    {
+        b.ToTable("PurchaseEvaluationChangelogs");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.EntityType).HasConversion<int>();
+        b.Property(x => x.Action).HasConversion<int>();
+        b.Property(x => x.PhaseAtChange).HasConversion<int>();
+        b.Property(x => x.UserName).HasMaxLength(200);
+        b.Property(x => x.Summary).HasMaxLength(500);
+        b.Property(x => x.ContextNote).HasMaxLength(2000);
+        b.Property(x => x.FieldChangesJson).HasColumnType("nvarchar(max)");
+
+        b.HasIndex(x => new { x.PurchaseEvaluationId, x.CreatedAt });
+        b.HasIndex(x => new { x.PurchaseEvaluationId, x.EntityType });
+    }
+}
+
+public class PurchaseEvaluationAttachmentConfiguration : IEntityTypeConfiguration<PurchaseEvaluationAttachment>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationAttachment> b)
+    {
+        b.ToTable("PurchaseEvaluationAttachments");
+        b.HasKey(x => x.Id);
+
+        b.Property(x => x.FileName).HasMaxLength(255).IsRequired();
+        b.Property(x => x.StoragePath).HasMaxLength(500).IsRequired();
+        b.Property(x => x.ContentType).HasMaxLength(100).IsRequired();
+        b.Property(x => x.Purpose).HasConversion<int>();
+        b.Property(x => x.Note).HasMaxLength(500);
+
+        b.HasIndex(x => x.PurchaseEvaluationId);
+        b.HasIndex(x => x.PurchaseEvaluationSupplierId);
+    }
+}
+
+public class PurchaseEvaluationWorkflowDefinitionConfiguration : IEntityTypeConfiguration<PurchaseEvaluationWorkflowDefinition>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationWorkflowDefinition> e)
+    {
+        e.ToTable("PurchaseEvaluationWorkflowDefinitions");
+        e.Property(x => x.Code).HasMaxLength(100).IsRequired();
+        e.Property(x => x.Name).HasMaxLength(200).IsRequired();
+        e.Property(x => x.Description).HasMaxLength(1000);
+        e.Property(x => x.EvaluationType).HasConversion<int>();
+
+        e.HasIndex(x => new { x.Code, x.Version }).IsUnique();
+        e.HasIndex(x => new { x.EvaluationType, x.IsActive });
+    }
+}
+
+public class PurchaseEvaluationWorkflowStepConfiguration : IEntityTypeConfiguration<PurchaseEvaluationWorkflowStep>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationWorkflowStep> e)
+    {
+        e.ToTable("PurchaseEvaluationWorkflowSteps");
+        e.Property(x => x.Name).HasMaxLength(200).IsRequired();
+        e.Property(x => x.Phase).HasConversion<int>();
+
+        e.HasOne(x => x.Definition)
+            .WithMany(d => d.Steps)
+            .HasForeignKey(x => x.PurchaseEvaluationWorkflowDefinitionId)
+            .OnDelete(DeleteBehavior.Cascade);
+
+        e.HasIndex(x => new { x.PurchaseEvaluationWorkflowDefinitionId, x.Order });
+    }
+}
+
+public class PurchaseEvaluationWorkflowStepApproverConfiguration : IEntityTypeConfiguration<PurchaseEvaluationWorkflowStepApprover>
+{
+    public void Configure(EntityTypeBuilder<PurchaseEvaluationWorkflowStepApprover> e)
+    {
+        e.ToTable("PurchaseEvaluationWorkflowStepApprovers");
+        e.Property(x => x.Kind).HasConversion<int>();
+        e.Property(x => x.AssignmentValue).HasMaxLength(100).IsRequired();
+
+        e.HasOne(x => x.Step)
+            .WithMany(s => s.Approvers)
+            .HasForeignKey(x => x.PurchaseEvaluationWorkflowStepId)
+            .OnDelete(DeleteBehavior.Cascade);
+    }
+}

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

@@ -8,6 +8,7 @@ using SolutionErp.Domain.Forms;
 using SolutionErp.Domain.Identity;
 using SolutionErp.Domain.Master;
 using SolutionErp.Domain.Master.Catalogs;
+using SolutionErp.Domain.PurchaseEvaluations;
 
 namespace SolutionErp.Infrastructure.Persistence;
 
@@ -37,6 +38,7 @@ public static class DbInitializer
         await SeedDemoMasterDataAsync(db, logger);
         await SeedContractTemplatesAsync(db, logger);
         await SeedWorkflowDefinitionsAsync(db, logger);
+        await SeedPurchaseEvaluationWorkflowsAsync(db, logger);
         await SeedCatalogsAsync(db, logger);
 
         // Backfill mã HĐ cho HĐ legacy chưa có (sau khi đổi policy gen-tại-create).
@@ -317,6 +319,79 @@ public static class DbInitializer
         }
     }
 
+    // Seed default workflow v01 cho 2 PurchaseEvaluationType (A NccOnly / B
+    // NccWithPlan) — mirror SeedWorkflowDefinitionsAsync của HĐ. Admin có
+    // thể tạo version mới qua /system/pe-workflows/:typeCode designer.
+    private static async Task SeedPurchaseEvaluationWorkflowsAsync(ApplicationDbContext db, ILogger logger)
+    {
+        var typeLabels = new Dictionary<PurchaseEvaluationType, (string Code, string Name)>
+        {
+            [PurchaseEvaluationType.DuyetNcc]          = ("QT-DN-A", "Quy trình Duyệt NCC"),
+            [PurchaseEvaluationType.DuyetNccPhuongAn]  = ("QT-DN-B", "Quy trình Duyệt NCC - Phương Án"),
+        };
+
+        var phaseNames = new Dictionary<PurchaseEvaluationPhase, string>
+        {
+            [PurchaseEvaluationPhase.DangSoanThao]     = "Soạn thảo",
+            [PurchaseEvaluationPhase.ChoPurchasing]    = "Purchasing tổng hợp",
+            [PurchaseEvaluationPhase.ChoDuAn]          = "Dự án kiểm tra",
+            [PurchaseEvaluationPhase.ChoCCM]           = "CCM kiểm tra ngân sách",
+            [PurchaseEvaluationPhase.ChoCEODuyetPA]    = "CEO duyệt phương án",
+            [PurchaseEvaluationPhase.ChoCEODuyetNCC]   = "CEO duyệt chọn đơn vị",
+            [PurchaseEvaluationPhase.DaDuyet]          = "Đã duyệt",
+        };
+
+        var added = 0;
+        foreach (var (type, info) in typeLabels)
+        {
+            var alreadyExists = await db.PurchaseEvaluationWorkflowDefinitions
+                .AnyAsync(w => w.EvaluationType == type);
+            if (alreadyExists) continue;
+
+            var policy = PurchaseEvaluationPolicyRegistry.For(type);
+            var def = new PurchaseEvaluationWorkflowDefinition
+            {
+                Code = info.Code,
+                Version = 1,
+                EvaluationType = type,
+                Name = $"{info.Name} (v01)",
+                Description = policy.Description,
+                IsActive = true,
+                ActivatedAt = DateTime.UtcNow,
+                Steps = policy.ActivePhases
+                    .Where(p => p != PurchaseEvaluationPhase.TuChoi && p != PurchaseEvaluationPhase.DaDuyet)
+                    .Select((p, idx) =>
+                    {
+                        var roles = policy.Transitions
+                            .Where(t => t.Key.To == p)
+                            .SelectMany(t => t.Value)
+                            .Distinct()
+                            .ToList();
+                        return new PurchaseEvaluationWorkflowStep
+                        {
+                            Order = idx + 1,
+                            Phase = p,
+                            Name = phaseNames.GetValueOrDefault(p, p.ToString()),
+                            SlaDays = policy.PhaseSla.GetValueOrDefault(p) is TimeSpan s ? (int?)s.Days : null,
+                            Approvers = roles.Select(r => new PurchaseEvaluationWorkflowStepApprover
+                            {
+                                Kind = WorkflowApproverKind.Role,
+                                AssignmentValue = r,
+                            }).ToList(),
+                        };
+                    })
+                    .ToList(),
+            };
+            db.PurchaseEvaluationWorkflowDefinitions.Add(def);
+            added++;
+        }
+        if (added > 0)
+        {
+            await db.SaveChangesAsync();
+            logger.LogInformation("Seeded {Count} PE workflow definitions (v01)", added);
+        }
+    }
+
     // Map ContractType → preferred supplier code (đa dạng dữ liệu demo theo
     // đúng business: ThauPhu/GiaoKhoan đi với NTP/TĐ, NCC/MuaBan/NTNcc đi
     // với NCC, DichVu/NTDv đi với DV).
@@ -786,6 +861,9 @@ public static class DbInitializer
             (MenuKeys.Roles,       "Vai trò",          MenuKeys.System,  92, "Shield"),
             (MenuKeys.Permissions, "Phân quyền",       MenuKeys.System,  93, "KeyRound"),
             (MenuKeys.Workflows,   "Quy trình HĐ",     MenuKeys.System,  94, "GitBranch"),
+            // Module Duyệt NCC (tiền-HĐ)
+            (MenuKeys.PurchaseEvaluations, "Quy trình chọn Thầu phụ - NCC", null, 25, "ClipboardCheck"),
+            (MenuKeys.PeWorkflows,         "Quy trình Duyệt NCC",           MenuKeys.System,  95, "GitCompareArrows"),
         };
 
         // Per-type sub-menu under Contracts: 1 group + 3 leaves each
@@ -809,6 +887,30 @@ public static class DbInitializer
             tree.Add((MenuKeys.WorkflowTypeLeaf(code), label, MenuKeys.Workflows, wfOrder++, "FileText"));
         }
 
+        // Pe_* group per PurchaseEvaluationType + 3 action leaves each
+        var peTypeLabels = new Dictionary<string, string>
+        {
+            ["DuyetNcc"] = "Quy trình Duyệt NCC",
+            ["DuyetNccPhuongAn"] = "Quy trình Duyệt NCC - Phương Án",
+        };
+        var peOrder = 1;
+        foreach (var code in MenuKeys.PurchaseEvaluationTypeCodes)
+        {
+            var label = peTypeLabels.GetValueOrDefault(code, code);
+            tree.Add((MenuKeys.PurchaseEvaluationGroup(code),  label,       MenuKeys.PurchaseEvaluations, peOrder++, "FileCheck"));
+            tree.Add((MenuKeys.PurchaseEvaluationList(code),   "Danh sách", MenuKeys.PurchaseEvaluationGroup(code), peOrder++, "List"));
+            tree.Add((MenuKeys.PurchaseEvaluationCreate(code), "Thao tác",  MenuKeys.PurchaseEvaluationGroup(code), peOrder++, "Plus"));
+            tree.Add((MenuKeys.PurchaseEvaluationPending(code),"Duyệt",     MenuKeys.PurchaseEvaluationGroup(code), peOrder++, "CheckCircle2"));
+        }
+
+        // PE workflow admin leaves dưới `PeWorkflows`
+        var peWfOrder = 96;
+        foreach (var code in MenuKeys.PurchaseEvaluationTypeCodes)
+        {
+            var label = peTypeLabels.GetValueOrDefault(code, code);
+            tree.Add((MenuKeys.PeWorkflowTypeLeaf(code), label, MenuKeys.PeWorkflows, peWfOrder++, "FileCheck"));
+        }
+
         var existingKeys = await db.MenuItems.Select(m => m.Key).ToListAsync();
         var added = 0;
         foreach (var (key, label, parent, o, icon) in tree)

src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/20260423093608_AddPurchaseEvaluations.cs

@@ -0,0 +1,455 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SolutionErp.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddPurchaseEvaluations : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluations",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    MaPhieu = table.Column<string>(type: "nvarchar(100)", maxLength: 100, nullable: true),
+                    Type = table.Column<int>(type: "int", nullable: false),
+                    Phase = table.Column<int>(type: "int", nullable: false),
+                    TenGoiThau = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: false),
+                    ProjectId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    DepartmentId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    DrafterUserId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    DiaDiem = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: true),
+                    MoTa = table.Column<string>(type: "nvarchar(2000)", maxLength: 2000, nullable: true),
+                    WorkflowDefinitionId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    SlaDeadline = table.Column<DateTime>(type: "datetime2", nullable: true),
+                    SlaWarningSent = table.Column<bool>(type: "bit", nullable: false),
+                    SelectedSupplierId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    PaymentTerms = table.Column<string>(type: "nvarchar(max)", nullable: true),
+                    ContractId = table.Column<Guid>(type: "uniqueidentifier", 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_PurchaseEvaluations", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationWorkflowDefinitions",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    Code = table.Column<string>(type: "nvarchar(100)", maxLength: 100, nullable: false),
+                    Version = table.Column<int>(type: "int", nullable: false),
+                    EvaluationType = table.Column<int>(type: "int", nullable: false),
+                    Name = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: false),
+                    Description = table.Column<string>(type: "nvarchar(1000)", maxLength: 1000, nullable: true),
+                    IsActive = table.Column<bool>(type: "bit", nullable: false),
+                    ActivatedAt = table.Column<DateTime>(type: "datetime2", 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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationWorkflowDefinitions", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationApprovals",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    FromPhase = table.Column<int>(type: "int", nullable: false),
+                    ToPhase = table.Column<int>(type: "int", nullable: false),
+                    ApproverUserId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    Decision = table.Column<int>(type: "int", nullable: false),
+                    Comment = table.Column<string>(type: "nvarchar(1000)", maxLength: 1000, nullable: true),
+                    ApprovedAt = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationApprovals", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationApprovals_PurchaseEvaluations_PurchaseEvaluationId",
+                        column: x => x.PurchaseEvaluationId,
+                        principalTable: "PurchaseEvaluations",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationAttachments",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationSupplierId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    FileName = table.Column<string>(type: "nvarchar(255)", maxLength: 255, nullable: false),
+                    StoragePath = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: false),
+                    FileSize = table.Column<long>(type: "bigint", nullable: false),
+                    ContentType = table.Column<string>(type: "nvarchar(100)", maxLength: 100, nullable: false),
+                    Purpose = table.Column<int>(type: "int", nullable: false),
+                    Note = table.Column<string>(type: "nvarchar(500)", maxLength: 500, 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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationAttachments", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationAttachments_PurchaseEvaluations_PurchaseEvaluationId",
+                        column: x => x.PurchaseEvaluationId,
+                        principalTable: "PurchaseEvaluations",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationChangelogs",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    EntityType = table.Column<int>(type: "int", nullable: false),
+                    EntityId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    Action = table.Column<int>(type: "int", nullable: false),
+                    PhaseAtChange = table.Column<int>(type: "int", nullable: true),
+                    UserId = table.Column<Guid>(type: "uniqueidentifier", nullable: true),
+                    UserName = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: true),
+                    Summary = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: true),
+                    FieldChangesJson = table.Column<string>(type: "nvarchar(max)", nullable: true),
+                    ContextNote = table.Column<string>(type: "nvarchar(2000)", maxLength: 2000, 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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationChangelogs", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationChangelogs_PurchaseEvaluations_PurchaseEvaluationId",
+                        column: x => x.PurchaseEvaluationId,
+                        principalTable: "PurchaseEvaluations",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationDetails",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    GroupCode = table.Column<string>(type: "nvarchar(50)", maxLength: 50, nullable: false),
+                    GroupName = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: false),
+                    ItemCode = table.Column<string>(type: "nvarchar(100)", maxLength: 100, nullable: true),
+                    NoiDung = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: false),
+                    DonViTinh = table.Column<string>(type: "nvarchar(50)", maxLength: 50, nullable: true),
+                    KhoiLuongNganSach = table.Column<decimal>(type: "decimal(18,4)", precision: 18, scale: 4, nullable: false),
+                    KhoiLuongThiCong = table.Column<decimal>(type: "decimal(18,4)", precision: 18, scale: 4, nullable: false),
+                    DonGiaNganSach = table.Column<decimal>(type: "decimal(18,2)", precision: 18, scale: 2, nullable: false),
+                    ThanhTienNganSach = table.Column<decimal>(type: "decimal(18,2)", precision: 18, scale: 2, nullable: false),
+                    Order = table.Column<int>(type: "int", nullable: false),
+                    GhiChu = table.Column<string>(type: "nvarchar(1000)", maxLength: 1000, 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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationDetails", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationDetails_PurchaseEvaluations_PurchaseEvaluationId",
+                        column: x => x.PurchaseEvaluationId,
+                        principalTable: "PurchaseEvaluations",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationSuppliers",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    SupplierId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    DisplayName = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: true),
+                    ContactName = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: true),
+                    ContactEmail = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: true),
+                    ContactPhone = table.Column<string>(type: "nvarchar(50)", maxLength: 50, nullable: true),
+                    PaymentTermText = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: true),
+                    Note = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: true),
+                    Order = table.Column<int>(type: "int", nullable: false),
+                    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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationSuppliers", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationSuppliers_PurchaseEvaluations_PurchaseEvaluationId",
+                        column: x => x.PurchaseEvaluationId,
+                        principalTable: "PurchaseEvaluations",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationWorkflowSteps",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationWorkflowDefinitionId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    Order = table.Column<int>(type: "int", nullable: false),
+                    Phase = table.Column<int>(type: "int", nullable: false),
+                    Name = table.Column<string>(type: "nvarchar(200)", maxLength: 200, nullable: false),
+                    SlaDays = table.Column<int>(type: "int", 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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationWorkflowSteps", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationWorkflowSteps_PurchaseEvaluationWorkflowDefinitions_PurchaseEvaluationWorkflowDefinitionId",
+                        column: x => x.PurchaseEvaluationWorkflowDefinitionId,
+                        principalTable: "PurchaseEvaluationWorkflowDefinitions",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationQuotes",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationDetailId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationSupplierId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    BgVat = table.Column<decimal>(type: "decimal(18,2)", precision: 18, scale: 2, nullable: false),
+                    ChuaVat = table.Column<decimal>(type: "decimal(18,2)", precision: 18, scale: 2, nullable: false),
+                    ThanhTien = table.Column<decimal>(type: "decimal(18,2)", precision: 18, scale: 2, nullable: false),
+                    IsSelected = table.Column<bool>(type: "bit", nullable: false),
+                    Note = table.Column<string>(type: "nvarchar(500)", maxLength: 500, nullable: true),
+                    PurchaseEvaluationId = table.Column<Guid>(type: "uniqueidentifier", 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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationQuotes", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationQuotes_PurchaseEvaluationDetails_PurchaseEvaluationDetailId",
+                        column: x => x.PurchaseEvaluationDetailId,
+                        principalTable: "PurchaseEvaluationDetails",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationQuotes_PurchaseEvaluationSuppliers_PurchaseEvaluationSupplierId",
+                        column: x => x.PurchaseEvaluationSupplierId,
+                        principalTable: "PurchaseEvaluationSuppliers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Restrict);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationQuotes_PurchaseEvaluations_PurchaseEvaluationId",
+                        column: x => x.PurchaseEvaluationId,
+                        principalTable: "PurchaseEvaluations",
+                        principalColumn: "Id");
+                });
+
+            migrationBuilder.CreateTable(
+                name: "PurchaseEvaluationWorkflowStepApprovers",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    PurchaseEvaluationWorkflowStepId = table.Column<Guid>(type: "uniqueidentifier", nullable: false),
+                    Kind = table.Column<int>(type: "int", nullable: false),
+                    AssignmentValue = table.Column<string>(type: "nvarchar(100)", maxLength: 100, nullable: false),
+                    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)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PurchaseEvaluationWorkflowStepApprovers", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_PurchaseEvaluationWorkflowStepApprovers_PurchaseEvaluationWorkflowSteps_PurchaseEvaluationWorkflowStepId",
+                        column: x => x.PurchaseEvaluationWorkflowStepId,
+                        principalTable: "PurchaseEvaluationWorkflowSteps",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationApprovals_PurchaseEvaluationId_ApprovedAt",
+                table: "PurchaseEvaluationApprovals",
+                columns: new[] { "PurchaseEvaluationId", "ApprovedAt" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationAttachments_PurchaseEvaluationId",
+                table: "PurchaseEvaluationAttachments",
+                column: "PurchaseEvaluationId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationAttachments_PurchaseEvaluationSupplierId",
+                table: "PurchaseEvaluationAttachments",
+                column: "PurchaseEvaluationSupplierId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationChangelogs_PurchaseEvaluationId_CreatedAt",
+                table: "PurchaseEvaluationChangelogs",
+                columns: new[] { "PurchaseEvaluationId", "CreatedAt" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationChangelogs_PurchaseEvaluationId_EntityType",
+                table: "PurchaseEvaluationChangelogs",
+                columns: new[] { "PurchaseEvaluationId", "EntityType" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationDetails_PurchaseEvaluationId_Order",
+                table: "PurchaseEvaluationDetails",
+                columns: new[] { "PurchaseEvaluationId", "Order" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationQuotes_PurchaseEvaluationDetailId_PurchaseEvaluationSupplierId",
+                table: "PurchaseEvaluationQuotes",
+                columns: new[] { "PurchaseEvaluationDetailId", "PurchaseEvaluationSupplierId" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationQuotes_PurchaseEvaluationId",
+                table: "PurchaseEvaluationQuotes",
+                column: "PurchaseEvaluationId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationQuotes_PurchaseEvaluationSupplierId",
+                table: "PurchaseEvaluationQuotes",
+                column: "PurchaseEvaluationSupplierId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluations_ContractId",
+                table: "PurchaseEvaluations",
+                column: "ContractId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluations_MaPhieu",
+                table: "PurchaseEvaluations",
+                column: "MaPhieu",
+                unique: true,
+                filter: "[MaPhieu] IS NOT NULL");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluations_Phase_IsDeleted",
+                table: "PurchaseEvaluations",
+                columns: new[] { "Phase", "IsDeleted" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluations_ProjectId",
+                table: "PurchaseEvaluations",
+                column: "ProjectId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluations_SlaDeadline",
+                table: "PurchaseEvaluations",
+                column: "SlaDeadline");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluations_WorkflowDefinitionId",
+                table: "PurchaseEvaluations",
+                column: "WorkflowDefinitionId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationSuppliers_PurchaseEvaluationId_SupplierId",
+                table: "PurchaseEvaluationSuppliers",
+                columns: new[] { "PurchaseEvaluationId", "SupplierId" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationSuppliers_SupplierId",
+                table: "PurchaseEvaluationSuppliers",
+                column: "SupplierId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationWorkflowDefinitions_Code_Version",
+                table: "PurchaseEvaluationWorkflowDefinitions",
+                columns: new[] { "Code", "Version" },
+                unique: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationWorkflowDefinitions_EvaluationType_IsActive",
+                table: "PurchaseEvaluationWorkflowDefinitions",
+                columns: new[] { "EvaluationType", "IsActive" });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationWorkflowStepApprovers_PurchaseEvaluationWorkflowStepId",
+                table: "PurchaseEvaluationWorkflowStepApprovers",
+                column: "PurchaseEvaluationWorkflowStepId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_PurchaseEvaluationWorkflowSteps_PurchaseEvaluationWorkflowDefinitionId_Order",
+                table: "PurchaseEvaluationWorkflowSteps",
+                columns: new[] { "PurchaseEvaluationWorkflowDefinitionId", "Order" });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationApprovals");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationAttachments");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationChangelogs");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationQuotes");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationWorkflowStepApprovers");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationDetails");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationSuppliers");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationWorkflowSteps");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluations");
+
+            migrationBuilder.DropTable(
+                name: "PurchaseEvaluationWorkflowDefinitions");
+        }
+    }
+}

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

@@ -1904,6 +1904,592 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                     b.ToTable("Notifications", (string)null);
                 });
 
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("ContractId")
+                        .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<Guid?>("DepartmentId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("DiaDiem")
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    b.Property<Guid?>("DrafterUserId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<bool>("IsDeleted")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("MaPhieu")
+                        .HasMaxLength(100)
+                        .HasColumnType("nvarchar(100)");
+
+                    b.Property<string>("MoTa")
+                        .HasMaxLength(2000)
+                        .HasColumnType("nvarchar(2000)");
+
+                    b.Property<string>("PaymentTerms")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("Phase")
+                        .HasColumnType("int");
+
+                    b.Property<Guid>("ProjectId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("SelectedSupplierId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime?>("SlaDeadline")
+                        .HasColumnType("datetime2");
+
+                    b.Property<bool>("SlaWarningSent")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("TenGoiThau")
+                        .IsRequired()
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    b.Property<int>("Type")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("WorkflowDefinitionId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ContractId");
+
+                    b.HasIndex("MaPhieu")
+                        .IsUnique()
+                        .HasFilter("[MaPhieu] IS NOT NULL");
+
+                    b.HasIndex("ProjectId");
+
+                    b.HasIndex("SlaDeadline");
+
+                    b.HasIndex("WorkflowDefinitionId");
+
+                    b.HasIndex("Phase", "IsDeleted");
+
+                    b.ToTable("PurchaseEvaluations", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationApproval", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime>("ApprovedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("ApproverUserId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Comment")
+                        .HasMaxLength(1000)
+                        .HasColumnType("nvarchar(1000)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("Decision")
+                        .HasColumnType("int");
+
+                    b.Property<int>("FromPhase")
+                        .HasColumnType("int");
+
+                    b.Property<Guid>("PurchaseEvaluationId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("ToPhase")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PurchaseEvaluationId", "ApprovedAt");
+
+                    b.ToTable("PurchaseEvaluationApprovals", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationAttachment", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("ContentType")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("nvarchar(100)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("FileName")
+                        .IsRequired()
+                        .HasMaxLength(255)
+                        .HasColumnType("nvarchar(255)");
+
+                    b.Property<long>("FileSize")
+                        .HasColumnType("bigint");
+
+                    b.Property<string>("Note")
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    b.Property<Guid>("PurchaseEvaluationId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("PurchaseEvaluationSupplierId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("Purpose")
+                        .HasColumnType("int");
+
+                    b.Property<string>("StoragePath")
+                        .IsRequired()
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PurchaseEvaluationId");
+
+                    b.HasIndex("PurchaseEvaluationSupplierId");
+
+                    b.ToTable("PurchaseEvaluationAttachments", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationChangelog", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("Action")
+                        .HasColumnType("int");
+
+                    b.Property<string>("ContextNote")
+                        .HasMaxLength(2000)
+                        .HasColumnType("nvarchar(2000)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("EntityId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("EntityType")
+                        .HasColumnType("int");
+
+                    b.Property<string>("FieldChangesJson")
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int?>("PhaseAtChange")
+                        .HasColumnType("int");
+
+                    b.Property<Guid>("PurchaseEvaluationId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Summary")
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    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", "CreatedAt");
+
+                    b.HasIndex("PurchaseEvaluationId", "EntityType");
+
+                    b.ToTable("PurchaseEvaluationChangelogs", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDetail", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<decimal>("DonGiaNganSach")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<string>("DonViTinh")
+                        .HasMaxLength(50)
+                        .HasColumnType("nvarchar(50)");
+
+                    b.Property<string>("GhiChu")
+                        .HasMaxLength(1000)
+                        .HasColumnType("nvarchar(1000)");
+
+                    b.Property<string>("GroupCode")
+                        .IsRequired()
+                        .HasMaxLength(50)
+                        .HasColumnType("nvarchar(50)");
+
+                    b.Property<string>("GroupName")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.Property<string>("ItemCode")
+                        .HasMaxLength(100)
+                        .HasColumnType("nvarchar(100)");
+
+                    b.Property<decimal>("KhoiLuongNganSach")
+                        .HasPrecision(18, 4)
+                        .HasColumnType("decimal(18,4)");
+
+                    b.Property<decimal>("KhoiLuongThiCong")
+                        .HasPrecision(18, 4)
+                        .HasColumnType("decimal(18,4)");
+
+                    b.Property<string>("NoiDung")
+                        .IsRequired()
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    b.Property<int>("Order")
+                        .HasColumnType("int");
+
+                    b.Property<Guid>("PurchaseEvaluationId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<decimal>("ThanhTienNganSach")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PurchaseEvaluationId", "Order");
+
+                    b.ToTable("PurchaseEvaluationDetails", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationQuote", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<decimal>("BgVat")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<decimal>("ChuaVat")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<bool>("IsSelected")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("Note")
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    b.Property<Guid>("PurchaseEvaluationDetailId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid?>("PurchaseEvaluationId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("PurchaseEvaluationSupplierId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<decimal>("ThanhTien")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("decimal(18,2)");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PurchaseEvaluationId");
+
+                    b.HasIndex("PurchaseEvaluationSupplierId");
+
+                    b.HasIndex("PurchaseEvaluationDetailId", "PurchaseEvaluationSupplierId")
+                        .IsUnique();
+
+                    b.ToTable("PurchaseEvaluationQuotes", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationSupplier", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("ContactEmail")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.Property<string>("ContactName")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.Property<string>("ContactPhone")
+                        .HasMaxLength(50)
+                        .HasColumnType("nvarchar(50)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("DisplayName")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.Property<string>("Note")
+                        .HasMaxLength(500)
+                        .HasColumnType("nvarchar(500)");
+
+                    b.Property<int>("Order")
+                        .HasColumnType("int");
+
+                    b.Property<string>("PaymentTermText")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.Property<Guid>("PurchaseEvaluationId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<Guid>("SupplierId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("SupplierId");
+
+                    b.HasIndex("PurchaseEvaluationId", "SupplierId")
+                        .IsUnique();
+
+                    b.ToTable("PurchaseEvaluationSuppliers", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowDefinition", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime?>("ActivatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("Code")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("nvarchar(100)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Description")
+                        .HasMaxLength(1000)
+                        .HasColumnType("nvarchar(1000)");
+
+                    b.Property<int>("EvaluationType")
+                        .HasColumnType("int");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("bit");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("Version")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("Code", "Version")
+                        .IsUnique();
+
+                    b.HasIndex("EvaluationType", "IsActive");
+
+                    b.ToTable("PurchaseEvaluationWorkflowDefinitions", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowStep", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
+                    b.Property<int>("Order")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Phase")
+                        .HasColumnType("int");
+
+                    b.Property<Guid>("PurchaseEvaluationWorkflowDefinitionId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int?>("SlaDays")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PurchaseEvaluationWorkflowDefinitionId", "Order");
+
+                    b.ToTable("PurchaseEvaluationWorkflowSteps", (string)null);
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowStepApprover", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<string>("AssignmentValue")
+                        .IsRequired()
+                        .HasMaxLength(100)
+                        .HasColumnType("nvarchar(100)");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("CreatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<int>("Kind")
+                        .HasColumnType("int");
+
+                    b.Property<Guid>("PurchaseEvaluationWorkflowStepId")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.Property<DateTime?>("UpdatedAt")
+                        .HasColumnType("datetime2");
+
+                    b.Property<Guid?>("UpdatedBy")
+                        .HasColumnType("uniqueidentifier");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PurchaseEvaluationWorkflowStepId");
+
+                    b.ToTable("PurchaseEvaluationWorkflowStepApprovers", (string)null);
+                });
+
             modelBuilder.Entity("Microsoft.AspNetCore.Identity.IdentityRoleClaim<System.Guid>", b =>
                 {
                     b.HasOne("SolutionErp.Domain.Identity.Role", null)
@@ -2135,6 +2721,106 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                         .OnDelete(DeleteBehavior.Restrict);
                 });
 
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationApproval", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", "PurchaseEvaluation")
+                        .WithMany("Approvals")
+                        .HasForeignKey("PurchaseEvaluationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("PurchaseEvaluation");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationAttachment", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", "PurchaseEvaluation")
+                        .WithMany("Attachments")
+                        .HasForeignKey("PurchaseEvaluationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("PurchaseEvaluation");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationChangelog", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", "PurchaseEvaluation")
+                        .WithMany("Changelogs")
+                        .HasForeignKey("PurchaseEvaluationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("PurchaseEvaluation");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDetail", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", "PurchaseEvaluation")
+                        .WithMany("Details")
+                        .HasForeignKey("PurchaseEvaluationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("PurchaseEvaluation");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationQuote", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDetail", "Detail")
+                        .WithMany("Quotes")
+                        .HasForeignKey("PurchaseEvaluationDetailId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", null)
+                        .WithMany("Quotes")
+                        .HasForeignKey("PurchaseEvaluationId");
+
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationSupplier", "Supplier")
+                        .WithMany()
+                        .HasForeignKey("PurchaseEvaluationSupplierId")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("Detail");
+
+                    b.Navigation("Supplier");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationSupplier", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", "PurchaseEvaluation")
+                        .WithMany("Suppliers")
+                        .HasForeignKey("PurchaseEvaluationId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("PurchaseEvaluation");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowStep", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowDefinition", "Definition")
+                        .WithMany("Steps")
+                        .HasForeignKey("PurchaseEvaluationWorkflowDefinitionId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Definition");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowStepApprover", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowStep", "Step")
+                        .WithMany("Approvers")
+                        .HasForeignKey("PurchaseEvaluationWorkflowStepId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Step");
+                });
+
             modelBuilder.Entity("SolutionErp.Domain.Contracts.Contract", b =>
                 {
                     b.Navigation("Approvals");
@@ -2176,6 +2862,36 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
 
                     b.Navigation("Permissions");
                 });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluation", b =>
+                {
+                    b.Navigation("Approvals");
+
+                    b.Navigation("Attachments");
+
+                    b.Navigation("Changelogs");
+
+                    b.Navigation("Details");
+
+                    b.Navigation("Quotes");
+
+                    b.Navigation("Suppliers");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationDetail", b =>
+                {
+                    b.Navigation("Quotes");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowDefinition", b =>
+                {
+                    b.Navigation("Steps");
+                });
+
+            modelBuilder.Entity("SolutionErp.Domain.PurchaseEvaluations.PurchaseEvaluationWorkflowStep", b =>
+                {
+                    b.Navigation("Approvers");
+                });
 #pragma warning restore 612, 618
         }
     }

src/Backend/SolutionErp.Infrastructure/Services/PurchaseEvaluationWorkflowService.cs

@@ -0,0 +1,133 @@
+using Microsoft.AspNetCore.Identity;
+using Microsoft.EntityFrameworkCore;
+using SolutionErp.Application.Common.Exceptions;
+using SolutionErp.Application.Common.Interfaces;
+using SolutionErp.Application.Notifications;
+using SolutionErp.Application.PurchaseEvaluations.Services;
+using SolutionErp.Domain.Contracts;
+using SolutionErp.Domain.Identity;
+using SolutionErp.Domain.Notifications;
+using SolutionErp.Domain.PurchaseEvaluations;
+
+namespace SolutionErp.Infrastructure.Services;
+
+// Mirror ContractWorkflowService. Load policy từ pinned
+// WorkflowDefinition (nếu có) hoặc fallback hardcoded registry.
+public class PurchaseEvaluationWorkflowService(
+    IApplicationDbContext db,
+    IDateTime dateTime,
+    INotificationService notifications,
+    UserManager<User> userManager) : IPurchaseEvaluationWorkflowService
+{
+    public TimeSpan? GetPhaseSla(PurchaseEvaluationPhase phase) =>
+        PurchaseEvaluationPolicies.NccOnly.PhaseSla.GetValueOrDefault(phase);
+
+    public async Task TransitionAsync(
+        PurchaseEvaluation evaluation,
+        PurchaseEvaluationPhase targetPhase,
+        Guid? actorUserId,
+        IReadOnlyList<string> actorRoles,
+        ApprovalDecision decision,
+        string? comment,
+        CancellationToken ct = default)
+    {
+        if (evaluation.Phase == targetPhase)
+            throw new ConflictException("Phiếu đã ở phase đích.");
+
+        PurchaseEvaluationPolicy policy;
+        if (evaluation.WorkflowDefinitionId is Guid wfId)
+        {
+            var def = await db.PurchaseEvaluationWorkflowDefinitions.AsNoTracking()
+                .Include(d => d.Steps.OrderBy(s => s.Order))
+                    .ThenInclude(s => s.Approvers)
+                .FirstOrDefaultAsync(d => d.Id == wfId, ct);
+            policy = def is not null
+                ? PurchaseEvaluationPolicyRegistry.FromDefinition(def)
+                : PurchaseEvaluationPolicyRegistry.ForEvaluation(evaluation);
+        }
+        else
+        {
+            policy = PurchaseEvaluationPolicyRegistry.ForEvaluation(evaluation);
+        }
+
+        var isAdmin = actorRoles.Contains(AppRoles.Admin);
+        var isSystem = actorUserId is null && decision == ApprovalDecision.AutoApprove;
+
+        if (!isAdmin && !isSystem)
+        {
+            if (!policy.Transitions.TryGetValue((evaluation.Phase, targetPhase), out var allowedRoles))
+                throw new ForbiddenException(
+                    $"Policy '{policy.Name}' không cho phép {evaluation.Phase} → {targetPhase}.");
+
+            if (!policy.IsTransitionAllowed(evaluation.Phase, targetPhase, actorRoles, actorUserId))
+            {
+                throw new ForbiddenException(
+                    $"Role ({string.Join(",", actorRoles)}) không đủ quyền chuyển {evaluation.Phase} → {targetPhase}. " +
+                    $"Policy '{policy.Name}' yêu cầu: {string.Join(",", allowedRoles)}.");
+            }
+        }
+
+        var fromPhase = evaluation.Phase;
+        evaluation.SlaWarningSent = false;
+        evaluation.Phase = targetPhase;
+
+        var sla = policy.PhaseSla.GetValueOrDefault(targetPhase);
+        evaluation.SlaDeadline = sla is null ? null : dateTime.UtcNow.Add(sla.Value);
+
+        db.PurchaseEvaluationApprovals.Add(new PurchaseEvaluationApproval
+        {
+            PurchaseEvaluationId = evaluation.Id,
+            FromPhase = fromPhase,
+            ToPhase = targetPhase,
+            ApproverUserId = actorUserId,
+            Decision = decision,
+            Comment = comment,
+            ApprovedAt = dateTime.UtcNow,
+        });
+
+        // Resolve actor name for changelog
+        string? actorName = null;
+        if (actorUserId is Guid uid)
+        {
+            var user = await userManager.FindByIdAsync(uid.ToString());
+            actorName = user?.FullName ?? user?.Email;
+        }
+
+        db.PurchaseEvaluationChangelogs.Add(new PurchaseEvaluationChangelog
+        {
+            PurchaseEvaluationId = evaluation.Id,
+            EntityType = PurchaseEvaluationEntityType.Workflow,
+            Action = ChangelogAction.Transition,
+            PhaseAtChange = targetPhase,
+            UserId = actorUserId,
+            UserName = actorName ?? "Hệ thống",
+            Summary = $"Chuyển phase {fromPhase} → {targetPhase}",
+            ContextNote = comment,
+        });
+
+        // Notify drafter
+        if (evaluation.DrafterUserId is Guid drafterId && drafterId != actorUserId)
+        {
+            var title = targetPhase switch
+            {
+                PurchaseEvaluationPhase.DaDuyet => $"Phiếu {evaluation.MaPhieu ?? evaluation.TenGoiThau} đã duyệt",
+                PurchaseEvaluationPhase.TuChoi => $"Phiếu {evaluation.TenGoiThau} bị từ chối",
+                _ => $"Phiếu {evaluation.TenGoiThau} chuyển phase mới",
+            };
+            var type = targetPhase switch
+            {
+                PurchaseEvaluationPhase.DaDuyet => NotificationType.ContractPublished,
+                PurchaseEvaluationPhase.TuChoi => NotificationType.ContractRejected,
+                _ => NotificationType.ContractPhaseTransition,
+            };
+            await notifications.NotifyAsync(
+                drafterId, type, title,
+                description: $"{fromPhase} → {targetPhase}" + (string.IsNullOrWhiteSpace(comment) ? "" : $" · {comment}"),
+                href: $"/purchase-evaluations/{evaluation.Id}",
+                refId: evaluation.Id,
+                ct: ct);
+        }
+
+        await db.SaveChangesAsync(ct);
+    }
+}