[CLAUDE] Docs: chốt session 5 — Budget FE + PE feature complete + Tests Phase 1-2 + CI gate

Session 5 (29/04) — 6 commit feature + 1 chốt MD này.

==== Stats sau session 5 ====
- 52 DB tables (+1 PEDeptOpinions)
- 15 migrations (+`AddPurchaseEvaluationDepartmentOpinions`)
- ~128 API endpoints (+4)
- ~31 FE pages (+5 Budget + 1 PeWorkflowsPage)
- 71 unit test pass (54 Domain + 17 Infra) — CI gate live, fail → no deploy
- ~13050 BE LOC (+1300)
- 30 demo user, 38 gotchas, 6 skill (no change)

==== MD touched ====
- STATUS.md: header Phase 8 + 6 row Recently Done session 5 + cumulative cột S5 + In Progress S6 (Hard blockers + Optional polish + Tests Phase 3-5 + Ops)
- HANDOFF.md: TL;DR 6 milestone S5 + Cảnh báo S6 (CI test gate workflow mới) + Priority 0 S6 (UAT + Ops focus) + Phase status table cập nhật
- migration-todos.md: Phase 8 done với A/B/C/D/E (FE Budget / PE-HD integration / PE WF Designer / Ý kiến 4 PB / Tests Phase 1-2) + Phase 9 active (UAT + Ops + carry over)
- architecture.md: §11 Testing strategy mới (test pyramid bottom-heavy + stack + CI gate + phased priority + quy tắc bổ sung mỗi feature)
- database/schema-diagram.md: Migration 15 row + total 52 tables + §13 PE Department Opinion (1 bảng UNIQUE PEId+Kind + Upsert behavior + SQL DDL)
- ef-core-migration SKILL: migration 15 entry + 52 tables total + Phase 8 update note
- CLAUDE.md (root): modules table + Tests row + scope `Tests` + Tests section mới + count update 15/52
- docs/CLAUDE.md: 7 module bullet + ERD 52 bảng + Roadmap Phase 8 done + Phase 9 active S6
- memory project_solution_erp.md: Phase 8 summary + Session 6 priority + workflow user mới (dotnet test → commit → push)
- session log 2026-04-29-chot-session-5-budget-fe-pe-tests.md (NEW — 10+ section detail)

==== Verify ====
- dotnet test SolutionErp.slnx → 71 pass / 2s
- git status clean sau commit này

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

docs/database/schema-diagram.md

@@ -483,8 +483,9 @@ COMMIT;
 | **12** | **`AddPurchaseEvaluations`** | **10 bảng module Duyệt NCC: PurchaseEvaluations + Suppliers + Details + Quotes + Approvals + Changelogs + Attachments + WorkflowDefinitions + WorkflowSteps + WorkflowStepApprovers** |
 | **13** | **`AddPurchaseEvaluationCodeSequences`** | **PurchaseEvaluationCodeSequences (Prefix PK, atomic seq mirror ContractCodeSequences). Format MaPhieu PE/{YYYY}/{A\|B}/{Seq:D3}** |
 | **14** | **`AddBudgets`** | **4 bảng module Ngân sách: Budgets + BudgetDetails + BudgetApprovals + BudgetChangelogs. + nullable FK index Contract.BudgetId & PurchaseEvaluation.BudgetId** |
+| **15** | **`AddPurchaseEvaluationDepartmentOpinions`** | **1 bảng `PurchaseEvaluationDepartmentOpinions` (UNIQUE PEId+Kind, max 1 row mỗi loại phòng ban per phiếu — UPDATE in-place, audit qua Changelog)** |
 
-Tổng: **51 bảng** (+ `__EFMigrationsHistory` hệ thống).
+Tổng: **52 bảng** (+ `__EFMigrationsHistory` hệ thống).
 
 ## 8bis. Bảng mới sau Migration 9-11
 
@@ -681,7 +682,39 @@ Không trigger DB → app layer tính lại sau mỗi mutation Detail. Đơn gi
 - **`AddBudgetCodeSequences`** — atomic SERIALIZABLE sequence khi format chốt chính thức (mirror Contract/PE pattern).
 - **`AddBudgetVersionedWorkflow`** — nếu Solutions cần admin config UI thay vì hardcoded policy. Pattern: `BudgetWorkflowDefinitions` + `Steps` + `StepApprovers` + `Budget.WorkflowDefinitionId?` pinned at create.
 
-## 13. Liên quan
+## 13. PE Department Opinion (Migration 15 — 1 bảng mới)
+
+Section "Ý kiến 4 phòng ban" trên PHIẾU TRÌNH KÝ CHỌN TP/NCC — sign-off block 4 box (Phê duyệt / P.CCM / P.MuaHàng / SM-PM). Lưu thành table riêng (1:N với PE) thay vì bloat 12 column nullable trong PE header.
+
+### Core (1 bảng):
+
+| Bảng | Mục đích |
+|---|---|
+| `PurchaseEvaluationDepartmentOpinions` | PEId FK Cascade + **Kind** enum `PeDepartmentKind` (1=PheDuyet, 2=Ccm, 3=MuaHang, 4=SmPm) + Opinion text(2000) + SignedAt? + UserId? + UserName denorm. UNIQUE(PEId, Kind) — max 1 row mỗi phòng ban per phiếu. AuditableEntity. |
+
+### Upsert behavior:
+
+- **Lần đầu (Add):** entity mới với Kind = X, Opinion = text, SignedAt = `Sign ? UtcNow : null`
+- **Lần sau (Update):** UPDATE in-place (gốc giữ Id), Opinion = new text. Sign=true → cập nhật SignedAt+UserId; Sign=false → giữ chữ ký cũ (chỉ update text)
+- Audit qua `PurchaseEvaluationChangelog` mỗi lần Upsert/Delete
+
+```sql
+CREATE TABLE PurchaseEvaluationDepartmentOpinions (
+  Id UNIQUEIDENTIFIER PRIMARY KEY,
+  PurchaseEvaluationId UNIQUEIDENTIFIER NOT NULL,
+  Kind INT NOT NULL,
+  Opinion NVARCHAR(2000) NULL,
+  SignedAt DATETIME2 NULL,
+  UserId UNIQUEIDENTIFIER NULL,
+  UserName NVARCHAR(200) NULL,
+  -- audit
+  CreatedAt, CreatedBy, UpdatedAt, UpdatedBy, IsDeleted, DeletedAt, DeletedBy,
+  CONSTRAINT FK_... FOREIGN KEY (PurchaseEvaluationId) REFERENCES PurchaseEvaluations(Id) ON DELETE CASCADE
+);
+CREATE UNIQUE INDEX IX_PEDeptOpinions_PEId_Kind ON PurchaseEvaluationDepartmentOpinions (PurchaseEvaluationId, Kind);
+```
+
+## 14. Liên quan
 
 - [`database-guide.md`](database-guide.md) — conventions + migration workflow + cheatsheet đầy đủ
 - [`../architecture.md`](../architecture.md) — layered architecture + data flow