Update XML doc comment in backend projects

web/backend/Features/Features.UserManagement/Controllers/UserController.cs

@@ -1,4 +1,5 @@
 using Domain.Entities;
+using Domain.Exceptions;
 using Features.UserManagement.Queries.GetAllUsers;
 using Features.UserManagement.Queries.GetUserById;
 using MediatR;
@@ -6,10 +7,14 @@ using Microsoft.AspNetCore.Mvc;
 
 namespace Features.UserManagement.Controllers;
 
+/// <summary>
+///     Exposes read endpoints for user accounts.
+/// </summary>
 [ApiController]
 [Route("api/[controller]")]
 public class UserController(IMediator mediator) : ControllerBase
 {
+    /// <summary>Gets a page of user accounts, ordered by creation date descending.</summary>
     /// <param name="limit"><c>null</c> for no limit.</param>
     /// <param name="offset"><c>null</c> for no offset.</param>
     [HttpGet]
@@ -22,6 +27,10 @@ public class UserController(IMediator mediator) : ControllerBase
         return Ok(users);
     }
 
+    /// <summary>Gets the user account with the given ID.</summary>
+    /// <exception cref="NotFoundException">
+    /// Thrown when no user account exists with the given ID, resulting in a 404 response.
+    /// </exception>
     [HttpGet("{id:guid}")]
     public async Task<ActionResult<UserAccount>> GetById(Guid id)
     {