feat: add user and role view sheets with detailed information display

- Created UserViewSheet component to display user details including username, full name, role, status, and timestamps.
- Created RoleViewSheet component to display role details including name, level, status, creation date, and associated permissions.
- Introduced permissions configuration in a new permissions.ts file, defining categories and permission codes for better management.
- Implemented middleware for authentication, ensuring access control for protected routes.

Distribution/Data/Seed/AdminSeed.cs

@@ -0,0 +1,25 @@
+using Distribution.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace Distribution.Data.Seed;
+
+public static class AdminSeed
+{
+    private static readonly DateTime SeedDate = new(2026, 10, 13);
+
+    // Same GUID as the AuthHex user — the sub claim from the JWT maps to this Id
+    internal static readonly Guid SuperAdminUserId = new("00000001-0000-0000-0000-000000000001");
+
+    public static void Apply(ModelBuilder modelBuilder)
+    {
+        modelBuilder.Entity<User>().HasData(new User
+        {
+            Id = SuperAdminUserId,
+            Username = "superadmin",
+            FullName = "Super Admin",
+            FK_RoleId = RoleAndPermissionSeed.SuperAdminRoleId,
+            IsActive = true,
+            CreatedAt = SeedDate
+        });
+    }
+}