Declare types in namespaces (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1050)

Rename type name AllowPrivateMessagesFromEnum so that it does not end in 'Enum' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Rename type name GameCollection so that it does not end in 'Collection' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Member 'saveRenameInProgress' is explicitly initialized to its default value (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1805)

Prefer 'AsSpan' over 'Substring' when span-based overloads are available (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1846)

The behavior of 'int.ToString()' could vary based on the current user's locale settings. Replace this call in 'ClientConfiguration.GetThemeInfoFromIndex(int)' with a call to 'int.ToString(IFormatProvider)'. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1305)

Prefer using 'string.Equals(string, StringComparison)' to perform a case-insensitive comparison, but keep in mind that this might cause subtle changes in behavior, so make sure to conduct thorough testing after applying the suggestion, or if culturally sensitive comparison is not required, consider using 'StringComparison.OrdinalIgnoreCase' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1862)

Prefer using 'string.Equals(string, StringComparison)' to perform a case-insensitive comparison, but keep in mind that this might cause subtle changes in behavior, so make sure to conduct thorough testing after applying the suggestion, or if culturally sensitive comparison is not required, consider using 'StringComparison.OrdinalIgnoreCase' (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1862)

Use 'ArgumentNullException.ThrowIfNull' instead of explicitly throwing a new exception instance (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1510)