[CLAUDE] Domain+App+Infra: Role ShortName + User Department/Position + 13 demo users (migration 11)

User feedback: chi tiết hóa Users/Phòng ban + gán roles. Roles label
tiếng Việt có Mã (ShortName) + Tên đầy đủ (Description).

## Entity changes

### Role (Domain/Identity/Role.cs)
+ ShortName (max 50)  — Mã viết tắt VN: QTV/BOD/CCM/PRO/FIN/...
+ Description (đã có) — Tên đầy đủ VN
- Identity Name = code English giữ nguyên (FK + [Authorize] attr)

### User (Domain/Identity/User.cs)
+ DepartmentId Guid? FK Departments (Restrict — không xóa dept nếu user reference)
+ Position string? max 200 — chức vụ free text

## Migration 11: AddRoleShortNameAndUserDepartment

3-file rule. Apply LocalDB OK. DB total: 36 tables (không tăng — chỉ
thêm cột vào existing).

## Seed VN labels (12 roles)

| Code | ShortName | Description |
|---|---|---|
| Admin | QTV | Quản trị viên hệ thống |
| Drafter | NV.PB | Nhân viên phòng ban (soạn thảo HĐ) |
| DeptManager | TPB | Trưởng phòng ban |
| ProjectManager | PM | Giám đốc dự án |
| Procurement | PRO | Phòng Cung ứng |
| CostControl | CCM | Phòng Kiểm soát chi phí |
| Finance | FIN | Phòng Tài chính |
| Accounting | ACT | Phòng Kế toán |
| Equipment | EQU | Phòng Thiết bị |
| Director | BOD | Ban Giám đốc |
| AuthorizedSigner | NĐUQ | Người được Ủy quyền ký HĐ |
| HrAdmin | HRA | Phòng Nhân sự - Hành chính |

SeedRolesAsync idempotent + backfill (existing role thiếu ShortName/
Description → update).

## Seed 13 demo users

Default password: User@123456 (warn log để rotate prod). Coverage full
org chart:
- bod.huynh (Tổng GĐ — Director, BOD dept)
- bod.le (Phó GĐ NĐUQ — AuthorizedSigner, BOD dept)
- pm.nguyen (PM FLOCK 01 — ProjectManager, PM dept)
- ccm.tran (TPB CCM — CostControl + DeptManager, CCM dept)
- pro.pham (TPB PRO — Procurement + DeptManager, PRO dept)
- fin.do, act.vu, equ.bui, hra.dang (TPB respective dept)
- qs.hoang, qs.ngo (Drafter — QS dept)
- nv.cao, nv.dinh (Drafter — PRO/FIN dept)

Idempotent (skip nếu email đã tồn tại).

## DTOs + Commands updated

- RoleDto + ShortName field
- UserDto + DepartmentId/DepartmentName/Position
- CreateUserCommand + DepartmentId/Position params (defaults null)
- UpdateUserCommand + DepartmentId/Position
- ListUsersQueryHandler load dept names denormalize per page
- UpdateUserCommandHandler set UpdatedAt

## Note

FE updates (UsersPage dept dropdown + role label VN) ở commit kế tiếp.

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

src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/20260423072019_AddRoleShortNameAndUserDepartment.cs

@@ -0,0 +1,72 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SolutionErp.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddRoleShortNameAndUserDepartment : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<Guid>(
+                name: "DepartmentId",
+                table: "Users",
+                type: "uniqueidentifier",
+                nullable: true);
+
+            migrationBuilder.AddColumn<string>(
+                name: "Position",
+                table: "Users",
+                type: "nvarchar(200)",
+                maxLength: 200,
+                nullable: true);
+
+            migrationBuilder.AddColumn<string>(
+                name: "ShortName",
+                table: "Roles",
+                type: "nvarchar(50)",
+                maxLength: 50,
+                nullable: true);
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Users_DepartmentId",
+                table: "Users",
+                column: "DepartmentId");
+
+            migrationBuilder.AddForeignKey(
+                name: "FK_Users_Departments_DepartmentId",
+                table: "Users",
+                column: "DepartmentId",
+                principalTable: "Departments",
+                principalColumn: "Id",
+                onDelete: ReferentialAction.Restrict);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropForeignKey(
+                name: "FK_Users_Departments_DepartmentId",
+                table: "Users");
+
+            migrationBuilder.DropIndex(
+                name: "IX_Users_DepartmentId",
+                table: "Users");
+
+            migrationBuilder.DropColumn(
+                name: "DepartmentId",
+                table: "Users");
+
+            migrationBuilder.DropColumn(
+                name: "Position",
+                table: "Users");
+
+            migrationBuilder.DropColumn(
+                name: "ShortName",
+                table: "Roles");
+        }
+    }
+}

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

@@ -1311,6 +1311,10 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                         .HasMaxLength(256)
                         .HasColumnType("nvarchar(256)");
 
+                    b.Property<string>("ShortName")
+                        .HasMaxLength(50)
+                        .HasColumnType("nvarchar(50)");
+
                     b.HasKey("Id");
 
                     b.HasIndex("NormalizedName")
@@ -1337,6 +1341,9 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                     b.Property<DateTime>("CreatedAt")
                         .HasColumnType("datetime2");
 
+                    b.Property<Guid?>("DepartmentId")
+                        .HasColumnType("uniqueidentifier");
+
                     b.Property<string>("Email")
                         .HasMaxLength(256)
                         .HasColumnType("nvarchar(256)");
@@ -1375,6 +1382,10 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                     b.Property<bool>("PhoneNumberConfirmed")
                         .HasColumnType("bit");
 
+                    b.Property<string>("Position")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
                     b.Property<string>("RefreshToken")
                         .HasMaxLength(512)
                         .HasColumnType("nvarchar(512)");
@@ -1397,6 +1408,8 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
 
                     b.HasKey("Id");
 
+                    b.HasIndex("DepartmentId");
+
                     b.HasIndex("NormalizedEmail")
                         .HasDatabaseName("EmailIndex");
 
@@ -2114,6 +2127,14 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                     b.Navigation("Role");
                 });
 
+            modelBuilder.Entity("SolutionErp.Domain.Identity.User", b =>
+                {
+                    b.HasOne("SolutionErp.Domain.Master.Department", null)
+                        .WithMany()
+                        .HasForeignKey("DepartmentId")
+                        .OnDelete(DeleteBehavior.Restrict);
+                });
+
             modelBuilder.Entity("SolutionErp.Domain.Contracts.Contract", b =>
                 {
                     b.Navigation("Approvals");