set octoshock fps overrides to mednafen values

TASVideos.Parsers/Parsers/Bk2.cs

@@ -13,6 +13,9 @@
 	private const double NtscNesFramerate = 60.0988138974405;
 	private const double NtscSnesFramerate = 60.0988138974405;
 	private const double PalSnesFramerate = 50.0069789081886;
+	// mednafen values to match current octoshock
+	private const double NtscPsxFramerate = 59.94006013870239;
+	private const double PalPsxFramerate = 50.00028192996979;
 
 	protected virtual string[] InvalidArchiveEntries => new[]
 	{
@@ -180,6 +183,14 @@
 			}
 		}
 
+		// TASVideos.Core\Services\QueueService.cs line 433 implies we only ever have a list of framerates for cores with framerate overrides, but it doesn't distinguish by core. nymashock has cycle count but octoshock has to rely on mednafen framerates for now. so we override with a constant for octoshock, to prevent picking random wrong values from nymashock overrides
+		if (core == "octoshock")
+		{
+			result.FrameRateOverride = result.Region == RegionType.Pal
+				? PalPsxFramerate
+				: NtscPsxFramerate;
+		}
+
 		if (result.CycleCount.HasValue)
 		{
 			if (ValidClockRates.Contains(clockRate))

TASVideos/Pages/Submissions/Models/SubmissionCreateModel.cs

@@ -8,7 +8,7 @@ public class SubmissionCreateModel
 {
 	[Display(Name = "Game Version", Description = "Example: USA")]
 	[StringLength(20)]
-	public string GameVersion { get; set; } = "";
+	public string? GameVersion { get; set; }
 
 	[Required]
 	[Display(Name = "Game Name", Description = "Example: Mega Man 2")]

TASVideos/Pages/Systems/EditFramerate.cshtml.cs

@@ -81,7 +81,7 @@ public async Task<IActionResult> OnPost()
 		await ConcurrentSave(
 			_db,
 			$"FrameRate {displayName} updated.",
-			$"Unable to updated {displayName} due to an unknown error");
+			$"Unable to update {displayName} due to an unknown error");
 		await _gameSystemService.FlushCache();
 		return BasePageRedirect("Edit", new { Id = FrameRate.SystemId });
 	}