diff --git a/docs/changelog/sessions/2026-04-25-1430-chot-session-3-final-cleanup.md b/docs/changelog/sessions/2026-04-25-1430-chot-session-3-final-cleanup.md
new file mode 100644
index 0000000..d3416b2
--- /dev/null
+++ b/docs/changelog/sessions/2026-04-25-1430-chot-session-3-final-cleanup.md
@@ -0,0 +1,94 @@
+# Session 2026-04-25 ~14:30 — Chốt session 3 final cleanup
+
+**Focus:** Tái cấu trúc + cleanup MD docs theo yêu cầu user "review cập nhật và
+tái cấu trúc lại MD sao cho phù hợp nhất với hiện tại". Audit toàn bộ + archive
+phần thừa + compact.
+
+## Cleanup outcomes
+
+### 1. Archive Phase 0 raw dump
+
+| File | Trước | Sau |
+|---|---|---|
+| `forms-spec-raw.md` (657 line) | `docs/` | `docs/_archive/` |
+| `workflow-raw.md` (62 line) | `docs/` | `docs/_archive/` |
+
+Update reference link trong `forms-spec.md` + `workflow-contract.md`.
+
+### 2. Compact docs
+
+| File | Trước | Sau | Δ |
+|---|---:|---:|---:|
+| `migration-todos.md` | 386 line | 114 line | **-71%** |
+| `STATUS.md` § In Progress | 17 row ✅ done + 12 pending | 5+ task pending only | -50% |
+| Tổng docs active | ~8480 | ~7660 | -800 line |
+
+### 3. Update outdated references
+
+- `database/database-guide.md`: header note "47 bảng 13 migration" + redirect schema-diagram. Email demo `@solutionerp.local` → `@solutions.com.vn`
+- `guides/runbook.md`: reset-password command email mới
+- `flows/README.md`: 6 flow tất cả ✅ Implemented + thêm row PE module
+- `docs/CLAUDE.md`: project layout + Roadmap thêm Phase 6 + 7. Login prod thêm `admin@solutions.com.vn` + 3 domain.
+
+### 4. Skill audit
+
+| Skill | Status | Update |
+|---|---|---|
+| `contract-workflow` | ✅ Active | (đã có Phase 6 cross-ref note session 2) |
+| `form-engine` | ✅ Active | OK |
+| `permission-matrix` | ✅ Active | (đã có Pe_*/PeWf_* note session 2) |
+| `dependency-audit-erp` | ✅ Active | OK |
+| `ef-core-migration` | ✅ Updated | 13 migration label + Phase 6 update note |
+| `iis-deploy-runbook` | ✅ Active | (đã có G-084 hardening session 2) |
+
+Cron audit `solution-erp-skill-audit-monthly` next 2026-05-01.
+
+## Stats cuối session 3 (cộng dồn 3 phiên 23-24-25)
+
+| Metric | Đầu session 3 | Cuối |
+|---|---:|---:|
+| BE LOC | ~11100 | ~11900 |
+| DB tables | 46 | **47** |
+| Migrations | 12 | **13** |
+| API endpoints | ~110 | ~113 (+3 PE attachments) |
+| Gotchas | 33 | **38** |
+| Commits session 3 | 0 | ~30 (a667665..e71e0eb) |
+
+## Session 4 — đọc thứ tự
+
+```
+1. docs/STATUS.md                                   (compact, In Progress 5+ task)
+2. docs/HANDOFF.md                                  (TL;DR session 3 + Priority 0)
+3. docs/changelog/sessions/2026-04-25-1430-chot-session-3-final-cleanup.md (file này)
+4. docs/changelog/migration-todos.md §Phase 7       (3 PE feature gap + ops)
+5. docs/gotchas.md §34-38                           (NavLink/inheritance/Vite/PS/Email gotcha mới)
+```
+
+## Priority 0 session 4 — 3 PE feature gap
+
+1. **PE Workflow admin designer UI** `/system/pe-workflows/:typeCode`
+   - BE `PeWorkflowAdminFeatures.cs` + `PeWorkflowsController.cs` (mirror Contract)
+   - FE `PeWorkflowsPage.tsx` + `PeWorkflowDesigner.tsx`
+   - Route + menu PeWf_* + resolver đã sẵn
+2. **Section "Ý kiến 4 phòng ban"** (Phê duyệt/CCM/MuaHàng/SM-PM) ở tab Thông tin
+   - Option A: 4 text field + signoff date + UserId vào header
+   - Option B: dùng PurchaseEvaluationApprovals với roleKind extra field
+3. **Export phiếu PDF/Excel** — tái dùng IDocumentConverter + template `PE-TrinhDuyet.docx`
+
+## Ops blockers còn
+
+- Remove binding `.huypham.vn` sau verify stable (script `migrate-domains.ps1 -RemoveOld -SkipCert`)
+- Fix win-acme scheduled task unhealthy (cert expire 2026-06-18)
+- UAT thật 1 tuần với 2-3 user
+- SMTP config → Email outbox
+- Rotate creds (admin + 16 demo + SA + vrapp + JWT)
+- Schedule SQL backup Task Scheduler
+
+## Notes cho session 4
+
+1. **Login email mới:** `admin@solutions.com.vn` / `Admin@123456`. Old email 401.
+2. **3 domain prod live:** api/admin/eoffice.solutions.com.vn (HTTPS Let's Encrypt).
+3. **Old domains `.huypham.vn`** vẫn fallback active — chưa remove.
+4. **VPS shared với VietReport** — gotcha #33 G-084 IPv4/IPv6 port hijack.
+5. **PE module hoàn thiện UX** — feature gap còn 3 task không-blocker (Designer UI optional, Ý kiến 4 phòng ban scope tùy user, Export PDF nice-to-have).
+6. **SSH config sẵn:** `ssh vietreport-vps` (key id_ed25519).
diff --git a/docs/database/database-guide.md b/docs/database/database-guide.md
index 748e6d8..9e283e5 100644
--- a/docs/database/database-guide.md
+++ b/docs/database/database-guide.md
@@ -1,8 +1,11 @@
 # Database Guide — SOLUTION_ERP
 
 > **DB engine:** SQL Server 2022 (LocalDB dev, full instance prod)
-> **ORM:** EF Core 10 Code-First migrations
+> **ORM:** EF Core 10 Code-First migrations — **47 bảng, 13 migration** (Init → AddPurchaseEvaluationCodeSequences)
 > **DbContext:** [`ApplicationDbContext`](../../src/Backend/SolutionErp.Infrastructure/Persistence/ApplicationDbContext.cs) extends `IdentityDbContext<User, Role, Guid>`
+> **Current schema + ERD:** xem [`schema-diagram.md`](schema-diagram.md) (luôn cập nhật)
+>
+> File này = conventions + migration workflow + cheatsheet. Section "Schema dự kiến" (§4) là Phase 0 historical — actual schema xem `schema-diagram.md`.
 
 ## 1. Connection strings
 
@@ -156,7 +159,7 @@ erDiagram
 
 | Field | Value |
 |---|---|
-| Email | `admin@solutionerp.local` |
+| Email | `admin@solutions.com.vn` |
 | Password | `Admin@123456` |
 | FullName | `Administrator` |
 | Roles | `[Admin]` |
diff --git a/docs/guides/runbook.md b/docs/guides/runbook.md
index 9a61b51..28bd64b 100644
--- a/docs/guides/runbook.md
+++ b/docs/guides/runbook.md
@@ -96,7 +96,7 @@ DELETE FROM ContractCodeSequences;
 ```powershell
 # Run script one-off trên server
 cd C:\inetpub\solution-erp\api
-dotnet SolutionErp.Api.dll --reset-password admin@solutionerp.local NewPassword@2026
+dotnet SolutionErp.Api.dll --reset-password admin@solutions.com.vn NewPassword@2026
 # (Feature chưa có — Phase 5.1)
 ```