fix: Some TAS-commands not executing properly

CelesteTAS-EverestInterop/TAS/Input/Command.cs

@@ -14,11 +14,11 @@ namespace TAS.Input;
 #nullable enable
 
 [Flags]
-public enum ExecuteTiming {
+public enum ExecuteTiming : byte {
     /// Executes the command while parsing inputs, like Read commands
-    Parse,
+    Parse = 1 << 0,
     /// Executes the command at runtime while playing inputs, like Console commands
-    Runtime,
+    Runtime = 1 << 1,
 }
 
 /// Creates a command which can be used inside TAS files
@@ -92,7 +92,7 @@ int Frame
     public static bool TryParse(InputController inputController, string filePath, int fileLine, string lineText, int frame, int studioLine, out Command command) {
         command = default;
 
-        if (!CommandLine.TryParse(lineText, out var commandLine)) {
+        if (string.IsNullOrWhiteSpace(lineText) || !char.IsLetter(lineText[0]) || !CommandLine.TryParse(lineText, out var commandLine)) {
             return false;
         }
 

CelesteTAS-EverestInterop/Utils/Extensions.cs

@@ -400,9 +400,7 @@ public static T Apply<T>(this T obj, Action<T> action) {
 
 // https://github.com/NoelFB/Foster/blob/main/Framework/Extensions/EnumExt.cs
 internal static class EnumExtensions {
-    /// <summary>
-    /// Enum.Has boxes the value, where as this method does not.
-    /// </summary>
+    /// Enum.HasFlag boxes the value, whereas this method does not
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     public static unsafe bool Has<TEnum>(this TEnum lhs, TEnum rhs) where TEnum : unmanaged, Enum {
         return sizeof(TEnum) switch {