Switch to SmartRes Result/Error, upgrade to .NET 10

Migrate codebase to use SmartRes Result<T, Error> (and Unit) across services and interfaces, replacing previous Result usage and updating many method signatures and implementations. Add ResultExtensions to convert SmartRes results to ASP.NET ActionResult and refactor AuthController to use functional Bind/Tap chains for registration/login flows. Upgrade projects to .NET 10 and bump related NuGet packages; add libs/SmartRes.dll and project references. Simplify DbContext registration to use Npgsql only with retry policies and enable detailed logging. Update Swagger/launch settings and other minor fixes (AutoMapper registration change, whitespace/exception handling, and removal of the Govor.ConsoleClient files).

Govor.API/Controllers/Authentication/AuthController.cs

@@ -1,9 +1,10 @@
+using Govor.API.Common.Extensions;
 using Govor.Application.Authentication;
-using Govor.Application.Authentication.Exceptions;
 using Govor.Application.Users.UserSessions;
 using Govor.Contracts.Requests;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using SmartRes;
 
 namespace Govor.API.Controllers.Authentication;
 
@@ -30,82 +31,47 @@ public class AuthController : Controller
     }
 
     [HttpPost("register")] // api/auth/register
-    public async Task<IActionResult> Register([FromBody] RegistrationRequest registrationRequest)
+    public async Task<IActionResult> Register([FromBody] RegistrationRequest request)
     {
-       
-        var inviteResult = await _invitesService.ValidateAsync(registrationRequest.InviteLink);
-        if (!inviteResult.IsSuccess)
+        _logger.LogInformation("Processing registration request for: {Name}", request.Name);
+        
+        var result = await _invitesService.ValidateAsync(request.InviteLink)
+            .BindAsync(invite => _accountService.RegistrationAsync(request.Name, request.Password, invite))
+            .TapAsync(user => _logger.LogInformation("User {Username} ({Id}) registered successfully", user.Username, user.Id))
+            .BindAsync(user => _userSession.OpenSessionAsync(user, request.DeviceInfo));
+        
+        if (result.IsFailure)
         {
-            _logger.LogWarning("Invite link invalid: {InviteLink}. Error: {Error}", registrationRequest.InviteLink,
-                inviteResult.Error);
-            return BadRequest($"Invite link invalid: {inviteResult.Error.Message}");
+            _logger.LogWarning("Registration pipeline failed. Error: {Code} - {Message}", 
+                result.Error.Code, result.Error.Message);
+        }
+        else
+        {
+            _logger.LogInformation("Session opened successfully for the request.");
         }
         
-        var userResult = await _accountService.RegistrationAsync(
-            registrationRequest.Name,
-            registrationRequest.Password,
-            inviteResult.Value);
-
-        if (userResult.IsFailure)
-        {
-            _logger.LogWarning("Registration failed for user {Name}. Error: {Error}", registrationRequest.Name,
-                userResult.Error);
-            
-            return userResult.Error.Code switch
-            {
-                nameof(UserAlreadyExistException) => BadRequest($"Registration failed: {userResult.Error.Message}"),
-                nameof(InvalidUsernameException) => BadRequest($"Invalid username: {userResult.Error.Message}"),
-                _ => BadRequest($"Registration failed: {userResult.Error.Message}")
-            };
-        }
-
-        var user = userResult.Value;
-        _logger.LogInformation("Register request for {Username} with id {Id} processed successfully", user.Username,
-            user.Id);
-        
-        var sessionResult = await _userSession.OpenSessionAsync(user, registrationRequest.DeviceInfo);
-        if (sessionResult.IsFailure)
-        {
-            _logger.LogError("Failed to open session for user {Username}. Error: {Error}", user.Username,
-                sessionResult.Error.Message);
-            return StatusCode(500, "An error occurred while creating the session.");
-        }
-
-        _logger.LogInformation("Session for user {Username} with id {Id} has been opened", user.Username, user.Id);
-        return Ok(sessionResult.Value); 
+        return result.ToActionResult();
     }
-
     
     [HttpPost("login")] // api/auth/login
-    public async Task<IActionResult> Login([FromBody] LoginRequest loginRequest)
+    public async Task<IActionResult> Login([FromBody] LoginRequest request)
     {
-        var userResult = await _accountService.LoginAsync(loginRequest.Name, loginRequest.Password);
+        _logger.LogInformation("Processing registration request for: {Name}", request.Name);
+        
+        var result = await _accountService.LoginAsync(request.Name, request.Password)
+            .TapAsync(user => _logger.LogInformation("User {Username} ({Id}) logged in.", user.Username, user.Id))
+            .BindAsync(user => _userSession.OpenSessionAsync(user, request.DeviceInfo));
     
-        if (userResult.IsFailure)
+        if (result.IsFailure)
         {
-            _logger.LogWarning("Login failed for user {Name}. Error: {Code}", loginRequest.Name, userResult.Error);
-            
-            return userResult.Error.Code switch
-            {
-                nameof(UserNotRegisteredException) => BadRequest("Login failed: user does not exist."),
-                nameof(InvalidOperationException) => BadRequest("Login failed: username or password is incorrect."),
-                _ => BadRequest($"Login failed: {userResult.Error.Message}")
-            };
+            _logger.LogWarning("Login pipeline failed. Error: {Code} - {Message}", 
+                result.Error.Code, result.Error.Message);
+        }
+        else
+        {
+            _logger.LogInformation("Session opened successfully for the request.");
         }
         
-        var user = userResult.Value; 
-        _logger.LogInformation("Login request for {Username} with id {Id} processed successfully", user.Username, user.Id);
-        
-        var sessionResult = await _userSession.OpenSessionAsync(user, loginRequest.DeviceInfo);
-    
-        if (sessionResult.IsFailure)
-        {
-            _logger.LogError("Failed to open session for user {Username}. Error: {Error}", user.Username, sessionResult.Error);
-            return StatusCode(500, "An error occurred while creating the session.");
-        }
-    
-        _logger.LogInformation("Session for user {Username} with id {Id} has been opened", user.Username, user.Id);
-    
-        return Ok(sessionResult.Value);
+        return result.ToActionResult();
     }
 }

Govor.API/Controllers/Friends/FriendshipController.cs

@@ -44,7 +44,7 @@ public class FriendshipController : Controller
         {
             _logger.LogWarning(ex, ex.Message);
             return Forbid(ex.Message);
-        }
+        } 
         catch (Exception ex)
         {
             _logger.LogError(ex, ex.Message);