Add player onboarding and tactical viewer updates

apps/backend/Auth/Simulation/PostgresAuthRepository.cs

@@ -28,6 +28,23 @@ public sealed class PostgresAuthRepository(NpgsqlDataSource dataSource) : IAuthR
         return await reader.ReadAsync(cancellationToken) ? ReadUser(reader) : null;
     }
 
+    public async Task<IReadOnlyList<UserAccount>> ListUsersAsync(CancellationToken cancellationToken)
+    {
+        await using var command = dataSource.CreateCommand("""
+            select id, email, password_hash, created_at_utc, roles
+            from auth_users
+            order by email asc
+            """);
+        await using var reader = await command.ExecuteReaderAsync(cancellationToken);
+        var users = new List<UserAccount>();
+        while (await reader.ReadAsync(cancellationToken))
+        {
+            users.Add(ReadUser(reader));
+        }
+
+        return users;
+    }
+
     public async Task<UserAccount> CreateUserAsync(string email, string passwordHash, IReadOnlyCollection<string> roles, CancellationToken cancellationToken)
     {
         var userId = Guid.NewGuid();