Split the reasoning parameters into dialects

app/MindWork AI Studio/Provider/Reasoning/Dialects/QwenThinkingDialect.cs

@@ -0,0 +1,38 @@
+namespace AIStudio.Provider.Reasoning.Dialects;
+
+/// <summary>
+/// The "enable_thinking" switch Qwen introduced and other servers took over.
+/// </summary>
+/// <remarks>
+/// It is accepted at the top level and inside "chat_template_kwargs", because it is really an
+/// argument to the chat template rather than to the API -- which is also why two other dialects ask
+/// this one about their own kwargs object instead of repeating the two keys.
+/// </remarks>
+public sealed class QwenThinkingDialect : IReasoningDialect
+{
+    /// <inheritdoc />
+    public ReasoningDialect Dialect => ReasoningDialect.QWEN_THINKING;
+
+    /// <inheritdoc />
+    public ReasoningConfigurationState Detect(IDictionary<string, object> parameters) => In(parameters);
+
+    /// <summary>
+    /// Reads the switch out of any parameter object, which need not be the top-level one.
+    /// </summary>
+    /// <param name="parameters">The object to look in.</param>
+    /// <returns>What it says.</returns>
+    public static ReasoningConfigurationState In(IDictionary<string, object> parameters)
+    {
+        var states = new List<ReasoningConfigurationState>();
+
+        if (ReasoningParameters.TryGet(parameters, "enable_thinking", out var enableThinking))
+            states.Add(ReasoningParameters.LevelOf(enableThinking));
+
+        if (ReasoningParameters.TryGet(parameters, "chat_template_kwargs", out var chatTemplateKwargs) &&
+            chatTemplateKwargs is IDictionary<string, object> chatTemplateKwargsObject &&
+            ReasoningParameters.TryGet(chatTemplateKwargsObject, "enable_thinking", out var nestedEnableThinking))
+            states.Add(ReasoningParameters.LevelOf(nestedEnableThinking));
+
+        return ReasoningParameters.Merge(states);
+    }
+}