[CLAUDE] Domain+Infra+App+FE-Admin: per-ContractType nested sidebar menu

User request: mỗi loại HĐ có menu riêng với 3 action Danh sách /
Thao tác / Duyệt.

Sidebar giờ 3-level under "Hợp đồng":
  Hợp đồng (group, expandable)
  ├── HĐ Thầu phụ (sub-group)
  │   ├── Danh sách → /contracts?type=1
  │   ├── Thao tác  → /contracts/new?type=1
  │   └── Duyệt      → /contracts?type=1&pendingMe=1
  ├── HĐ Giao khoán (sub-group)
  ├── HĐ NCC / Dịch vụ / Mua bán / Nguyên tắc NCC / Nguyên tắc DV
  └── ... (7 types × 4 = 28 new menu items)

BE:
- MenuKeys.cs: ContractTypeCodes array + helpers ContractTypeGroup/
  List/Create/Pending → key format Ct_<TypeCode>[_<Action>]
- DbInitializer.SeedMenuTreeAsync: loop seeds 28 entries under Contracts
- GetMyMenuTreeQuery.BuildChildren: descendants of `Contracts` inherit
  parent permission (avoid adding 28 rows to Permissions table per role)

FE:
- Layout.tsx recursive: MenuNodeRenderer dispatches group vs leaf by
  depth; nested groups collapsed by default (top-level expanded).
  Deeper levels get smaller padding/text + left border guide.
- Pattern-based resolvePath: Ct_<Type>_<Action> → URL with query.
- Contract type code → int map (matches Domain ContractType enum).
- ContractsListPage reads ?type + ?pendingMe, filters client-side.
  Header title + description reflect active filter. "← Tất cả loại"
  quick-reset button.
- ContractCreatePage new cho admin (copy từ fe-user), pre-select type
  từ ?type URL param.
- App.tsx route /contracts/new → ContractCreatePage.

Pure navigation UX; no new permissions needed. Admin + any role with
Contracts.Read see full menu; leaves click-through to filtered views.

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

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

@@ -88,7 +88,18 @@ public static class DbInitializer
 
     private static async Task SeedMenuTreeAsync(ApplicationDbContext db, ILogger logger)
     {
-        var tree = new (string Key, string Label, string? Parent, int Order, string Icon)[]
+        var typeLabels = new Dictionary<string, string>
+        {
+            ["ThauPhu"] = "HĐ Thầu phụ",
+            ["GiaoKhoan"] = "HĐ Giao khoán",
+            ["NhaCungCap"] = "HĐ Nhà cung cấp",
+            ["DichVu"] = "HĐ Dịch vụ",
+            ["MuaBan"] = "HĐ Mua bán",
+            ["NguyenTacNcc"] = "HĐ Nguyên tắc NCC",
+            ["NguyenTacDv"] = "HĐ Nguyên tắc Dịch vụ",
+        };
+
+        var tree = new List<(string Key, string Label, string? Parent, int Order, string Icon)>
         {
             (MenuKeys.Dashboard,   "Tổng quan",        null,             10, "LayoutDashboard"),
             (MenuKeys.Master,      "Danh mục",         null,             20, "Database"),
@@ -104,12 +115,24 @@ public static class DbInitializer
             (MenuKeys.Permissions, "Phân quyền",       MenuKeys.System,  93, "KeyRound"),
         };
 
+        // Per-type sub-menu under Contracts: 1 group + 3 leaves each
+        // (Danh sách / Thao tác / Duyệt).
+        var order = 31;
+        foreach (var code in MenuKeys.ContractTypeCodes)
+        {
+            var label = typeLabels.GetValueOrDefault(code, code);
+            tree.Add((MenuKeys.ContractTypeGroup(code),  label,       MenuKeys.Contracts,                order++, "FileText"));
+            tree.Add((MenuKeys.ContractTypeList(code),   "Danh sách", MenuKeys.ContractTypeGroup(code),  order++, "List"));
+            tree.Add((MenuKeys.ContractTypeCreate(code), "Thao tác",  MenuKeys.ContractTypeGroup(code),  order++, "Plus"));
+            tree.Add((MenuKeys.ContractTypePending(code),"Duyệt",     MenuKeys.ContractTypeGroup(code),  order++, "CheckCircle2"));
+        }
+
         var existingKeys = await db.MenuItems.Select(m => m.Key).ToListAsync();
         var added = 0;
-        foreach (var (key, label, parent, order, icon) in tree)
+        foreach (var (key, label, parent, o, icon) in tree)
         {
             if (existingKeys.Contains(key)) continue;
-            db.MenuItems.Add(new MenuItem { Key = key, Label = label, ParentKey = parent, Order = order, Icon = icon });
+            db.MenuItems.Add(new MenuItem { Key = key, Label = label, ParentKey = parent, Order = o, Icon = icon });
             added++;
         }
         if (added > 0)