Replace custom socket implementation with SignalR.

Replace MSAL and custom cookie auth with Microsoft.Identity.EntityFramework
Also some UI redesign to accommodate different login experience.

Shogi.Api/Repositories/QueryRepository.cs

@@ -1,65 +1,24 @@
 using Dapper;
-using Shogi.Contracts.Api;
-using Shogi.Contracts.Types;
+using Shogi.Api.Repositories.Dto;
 using System.Data;
 using System.Data.SqlClient;
 
 namespace Shogi.Api.Repositories;
 
-public class QueryRepository : IQueryRespository
+public class QueryRepository(IConfiguration configuration)
 {
-    private readonly string connectionString;
+	private readonly string connectionString = configuration.GetConnectionString("ShogiDatabase")
+		?? throw new InvalidOperationException("No database configured for QueryRepository.");
 
-    public QueryRepository(IConfiguration configuration)
-    {
-        var connectionString = configuration.GetConnectionString("ShogiDatabase") ?? throw new InvalidOperationException("No database configured for QueryRepository.");
-        this.connectionString = connectionString;
-    }
+	public async Task<IEnumerable<SessionDto>> ReadSessionsMetadata(string playerId)
+	{
+		using var connection = new SqlConnection(this.connectionString);
 
-    public async Task<ReadSessionsPlayerCountResponse> ReadSessionPlayerCount(string playerName)
-    {
-        using var connection = new SqlConnection(connectionString);
+		var results = await connection.QueryMultipleAsync(
+				"session.ReadSessionsMetadata",
+				new { PlayerId = playerId },
+				commandType: CommandType.StoredProcedure);
 
-        var results = await connection.QueryMultipleAsync(
-            "session.ReadSessionPlayerCount",
-            new { PlayerName = playerName },
-            commandType: System.Data.CommandType.StoredProcedure);
-
-        var joinedSessions = await results.ReadAsync<SessionMetadata>();
-        var otherSessions = await results.ReadAsync<SessionMetadata>();
-        return new ReadSessionsPlayerCountResponse
-        {
-            PlayerHasJoinedSessions = joinedSessions.ToList(),
-            AllOtherSessions = otherSessions.ToList()
-        };
-    }
-
-    /// <summary>
-    /// </summary>
-    /// <returns>A <see cref="ValueTuple"/> with Item1 as player 1 and Item2 as player 2.</returns>
-    public async Task<(User Player1, User? Player2)?> GetUsersForSession(string sessionName)
-    {
-        using var connection = new SqlConnection(connectionString);
-        var results = await connection.QueryAsync<(string Player1Name, string Player1DisplayName, string Player2Name, string Player2DisplayName)>(
-            "session.ReadUsersBySession",
-            new { SessionName = sessionName },
-            commandType: CommandType.StoredProcedure);
-
-        if (results.Any())
-        {
-            var (Player1Name, Player1DisplayName, Player2Name, Player2DisplayName) = results.First();
-            var p1 = new User(Player1Name, Player1DisplayName);
-            var p2 = Player2Name != null
-                ? new User(Player2Name, Player2DisplayName)
-                : null;
-            return (p1, p2);
-        }
-        return null;
-    }
+		return await results.ReadAsync<SessionDto>();
+	}
 }
-
-public interface IQueryRespository
-{
-    Task<(User Player1, User? Player2)?> GetUsersForSession(string sessionName);
-    Task<ReadSessionsPlayerCountResponse> ReadSessionPlayerCount(string playerName);
-}