Fix LyricsStartupValidator build errors

- Remove duplicate _httpClient field (use inherited one)
- Replace ValidationResult.Warning with ValidationResult.Failure
- Use PARTIAL status for partial failures

allstarr/Services/Lyrics/LyricsStartupValidator.cs

@@ -12,7 +12,6 @@ namespace allstarr.Services.Lyrics;
 public class LyricsStartupValidator : BaseStartupValidator
 {
     private readonly SpotifyApiSettings _spotifySettings;
-    private readonly HttpClient _httpClient;
     
     // Test song: "22" by Taylor Swift
     private const string TestSongTitle = "22";
@@ -29,7 +28,6 @@ public class LyricsStartupValidator : BaseStartupValidator
         : base(httpClientFactory.CreateClient())
     {
         _spotifySettings = spotifySettings.Value;
-        _httpClient = httpClientFactory.CreateClient();
         _httpClient.Timeout = TimeSpan.FromSeconds(10);
     }
 
@@ -60,7 +58,7 @@ public class LyricsStartupValidator : BaseStartupValidator
 
         return allSuccess 
             ? ValidationResult.Success("Lyrics services validation completed")
-            : ValidationResult.Warning("Some lyrics services had issues");
+            : ValidationResult.Failure("PARTIAL", "Some lyrics services had issues", ConsoleColor.Yellow);
     }
 
     private async Task<bool> TestLrclibAsync(CancellationToken cancellationToken)