[CLAUDE] Infra: Mig 27 — Chunk A MenuItem +IsVisible +DisplayLabel

Session 20 turn 7: admin có thể Ẩn/Hiện + Đổi tên hiển thị menu cho fe-user
(eOffice). Admin sidebar luôn giữ Label gốc (user Q2=b "chỉ của eOffice thôi").

Domain MenuItem: +IsVisible bool=true +DisplayLabel string?(200)
EF Configuration: HasDefaultValue(true) + HasMaxLength(200)
Migration 27 AddVisibilityAndDisplayLabelToMenuItems — 3-file rule:
  + AddColumn IsVisible bit NOT NULL DEFAULT 1
  + AddColumn DisplayLabel nvarchar(200) NULL

Verify:
- dotnet build SolutionErp.slnx — 0 warn / 0 err
- dotnet ef database update --connection SolutionErp_Dev — applied OK
- dotnet ef database update SolutionErp_Design — applied OK

Pending: B (BE API) → C (FE admin page) → D (FE user render) → E (Docs)

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

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

@@ -3,11 +3,18 @@ namespace SolutionErp.Domain.Identity;
 public class MenuItem
 {
     public string Key { get; set; } = string.Empty;           // PK, PascalCase
-    public string Label { get; set; } = string.Empty;         // Tiếng Việt display
+    public string Label { get; set; } = string.Empty;         // Tiếng Việt display (label gốc — admin sidebar luôn dùng)
     public string? ParentKey { get; set; }                    // NULL nếu root
     public int Order { get; set; }
     public string? Icon { get; set; }                         // lucide-react icon name
 
+    // Session 20 Mig 27 — admin có thể custom hiển thị menu cho fe-user (eOffice):
+    //   IsVisible = false  → ẩn khỏi response /menus/me FE-user, fe-admin vẫn thấy
+    //   DisplayLabel = "X" → fe-user render "X" thay Label gốc, fe-admin giữ Label
+    // Admin null/true mặc định cho menu mới seed.
+    public bool IsVisible { get; set; } = true;
+    public string? DisplayLabel { get; set; }                 // override label fe-user, null = dùng Label gốc
+
     public MenuItem? Parent { get; set; }
     public List<MenuItem> Children { get; set; } = new();
     public List<Permission> Permissions { get; set; } = new();

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

@@ -15,6 +15,8 @@ public class MenuItemConfiguration : IEntityTypeConfiguration<MenuItem>
         b.Property(x => x.Label).HasMaxLength(200).IsRequired();
         b.Property(x => x.ParentKey).HasMaxLength(50);
         b.Property(x => x.Icon).HasMaxLength(50);
+        b.Property(x => x.IsVisible).HasDefaultValue(true);
+        b.Property(x => x.DisplayLabel).HasMaxLength(200);
 
         b.HasOne(x => x.Parent)
             .WithMany(x => x.Children)

src/Backend/SolutionErp.Infrastructure/Persistence/Migrations/20260511042830_AddVisibilityAndDisplayLabelToMenuItems.cs

@@ -0,0 +1,40 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SolutionErp.Infrastructure.Persistence.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddVisibilityAndDisplayLabelToMenuItems : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<string>(
+                name: "DisplayLabel",
+                table: "MenuItems",
+                type: "nvarchar(200)",
+                maxLength: 200,
+                nullable: true);
+
+            migrationBuilder.AddColumn<bool>(
+                name: "IsVisible",
+                table: "MenuItems",
+                type: "bit",
+                nullable: false,
+                defaultValue: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "DisplayLabel",
+                table: "MenuItems");
+
+            migrationBuilder.DropColumn(
+                name: "IsVisible",
+                table: "MenuItems");
+        }
+    }
+}

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

@@ -1799,10 +1799,19 @@ namespace SolutionErp.Infrastructure.Persistence.Migrations
                         .HasMaxLength(50)
                         .HasColumnType("nvarchar(50)");
 
+                    b.Property<string>("DisplayLabel")
+                        .HasMaxLength(200)
+                        .HasColumnType("nvarchar(200)");
+
                     b.Property<string>("Icon")
                         .HasMaxLength(50)
                         .HasColumnType("nvarchar(50)");
 
+                    b.Property<bool>("IsVisible")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("bit")
+                        .HasDefaultValue(true);
+
                     b.Property<string>("Label")
                         .IsRequired()
                         .HasMaxLength(200)