Add Qwen3-ForcedAligner-Ultra as a forced aligner option

src/ui/Features/Tools/ImproveTimeCodes/ImproveTimeCodesAligners.cs

@@ -84,7 +84,9 @@ double Score(ForcedAlignerOption option)
                 return CanaryLanguages.Contains(language) || language.Length == 0 ? 1 : 3;
             }
 
-            if (option.Choice == ForcedAlignerOption.Qwen3Choice)
+            // Ultra is a fine-tune of the same model with the same languages. Not yet measured on
+            // re-timing windows, so it ties with Qwen3 and stays behind it (stable sort).
+            if (option.Choice is ForcedAlignerOption.Qwen3Choice or ForcedAlignerOption.Qwen3UltraChoice)
             {
                 return Qwen3Languages.Contains(language) ? 2 : 4;
             }

src/ui/Features/Video/SpeechToText/Engines/ForcedAlignerOption.cs

@@ -9,6 +9,7 @@ public class ForcedAlignerOption
     public const string BuiltInChoice = "built-in";
     public const string CanaryCtcChoice = "canary-ctc";
     public const string Qwen3Choice = "qwen3-forced";
+    public const string Qwen3UltraChoice = "qwen3-forced-ultra";
 
     // wav2vec2 forced aligner choices. The choice string mirrors CrispASR's
     // `-am wav2vec2-aligner-<code>` alias so the persisted setting is self-
@@ -78,6 +79,20 @@ public static ForcedAlignerOption Qwen3() =>
             "https://huggingface.co/cstr/qwen3-forced-aligner-0.6b-GGUF/resolve/main/qwen3-forced-aligner-0.6b-q8_0.gguf",
             "986 MB");
 
+    /// <summary>
+    /// Qwen3-ForcedAligner-Ultra (17slever17, Apache-2.0): the 0.6B aligner fine-tuned on
+    /// hand-corrected word boundaries. Same architecture and 5000-class timestamp head, so
+    /// CrispASR runs it through its Qwen3 aligner path; the file name must keep
+    /// "forced-aligner" for CrispASR to pick that path. Only an F16 conversion exists, and it
+    /// leaves out the optional local boundary-refinement head.
+    /// </summary>
+    public static ForcedAlignerOption Qwen3Ultra() =>
+        new("Qwen3 forced aligner Ultra",
+            Qwen3UltraChoice,
+            "qwen3-forced-aligner-ultra-f16.gguf",
+            "https://huggingface.co/cstr/qwen3-forced-aligner-ultra-GGUF/resolve/main/qwen3-forced-aligner-ultra-f16.gguf",
+            "1.84 GB");
+
     /// <summary>
     /// 12 language-specific wav2vec2 CTC forced aligners shipped by CrispASR
     /// ("WhisperX aligner zoo"). Same Q4_K-quantized GGUFs that WhisperX itself
@@ -199,6 +214,7 @@ public static IReadOnlyList<ForcedAlignerOption> All()
             BuiltIn(),
             CanaryCtc(),
             Qwen3(),
+            Qwen3Ultra(),
         };
         list.AddRange(Wav2Vec2All());
         return list;
@@ -220,6 +236,7 @@ public static ForcedAlignerOption FromChoice(string? choice)
         {
             CanaryCtcChoice => CanaryCtc(),
             Qwen3Choice => Qwen3(),
+            Qwen3UltraChoice => Qwen3Ultra(),
             _ => BuiltIn(),
         };
     }

src/ui/Features/Video/SpeechToText/SpeechToTextViewModel.cs

@@ -637,6 +637,7 @@ private void UpdateForcedAlignerUi()
         }
         newOptions.Add(ForcedAlignerOption.CanaryCtc());
         newOptions.Add(ForcedAlignerOption.Qwen3());
+        newOptions.Add(ForcedAlignerOption.Qwen3Ultra());
         // wav2vec2 "WhisperX aligner zoo" — 12 language-specific CTC aligners
         // that work on top of any Crisp ASR backend via `-am <path>`.
         newOptions.AddRange(ForcedAlignerOption.Wav2Vec2All());

tests/UI/Features/Tools/ImproveTimeCodes/ImproveTimeCodesAlignersTests.cs

@@ -9,8 +9,8 @@ public class ImproveTimeCodesAlignersTests
     [InlineData("en", ForcedAlignerOption.CanaryCtcChoice, ForcedAlignerOption.Wav2Vec2EnChoice, ForcedAlignerOption.Qwen3Choice)]
     [InlineData("de", ForcedAlignerOption.Wav2Vec2DeChoice, ForcedAlignerOption.CanaryCtcChoice, ForcedAlignerOption.Qwen3Choice)]
     [InlineData("da", ForcedAlignerOption.CanaryCtcChoice, ForcedAlignerOption.Qwen3Choice, null)]
-    [InlineData("ja", ForcedAlignerOption.Wav2Vec2JaChoice, ForcedAlignerOption.Qwen3Choice, ForcedAlignerOption.CanaryCtcChoice)]
-    [InlineData("ko", ForcedAlignerOption.Qwen3Choice, ForcedAlignerOption.CanaryCtcChoice, null)]
+    [InlineData("ja", ForcedAlignerOption.Wav2Vec2JaChoice, ForcedAlignerOption.Qwen3Choice, ForcedAlignerOption.Qwen3UltraChoice)]
+    [InlineData("ko", ForcedAlignerOption.Qwen3Choice, ForcedAlignerOption.Qwen3UltraChoice, ForcedAlignerOption.CanaryCtcChoice)]
     [InlineData("", ForcedAlignerOption.CanaryCtcChoice, ForcedAlignerOption.Qwen3Choice, null)]
     public void Rank_PutsTheBestAlignersForTheLanguageFirst(string language, string first, string second, string? third)
     {
@@ -34,6 +34,16 @@ public void Rank_OffersEveryAlignerOnce_AndNeverTheBuiltInOne()
         Assert.DoesNotContain(ranked, o => o.IsBuiltIn);
     }
 
+    [Fact]
+    public void Qwen3Ultra_RoundTripsThroughItsChoice_AndKeepsTheAlignerFileName()
+    {
+        var option = ForcedAlignerOption.FromChoice(ForcedAlignerOption.Qwen3UltraChoice);
+
+        Assert.Equal(ForcedAlignerOption.Qwen3UltraChoice, option.Choice);
+        // CrispASR selects its Qwen3 aligner path from "forced-aligner" in the file name.
+        Assert.Contains("forced-aligner", option.FileName);
+    }
+
     [Theory]
     [InlineData("en", "phonon2-q8_0.gguf")]
     [InlineData("EN", "phonon2-q8_0.gguf")]