Fixed reasoning tokens inflating the exact token count

app/MindWork AI Studio/Chat/ReportedTokenUsage.cs

@@ -6,10 +6,11 @@ namespace AIStudio.Chat;
 /// What a provider said the request behind one answer cost, as it is stored on that answer.
 /// </summary>
 /// <remarks>
-/// The numbers and the model they were charged for travel as one value. Each of them is meaningless
-/// without the others, and loose fields on the answer could be set, cleared, or copied apart.
+/// The number, the model it was charged for, and the conversation it was counted on travel as one
+/// value. Each of them is meaningless without the others, and loose fields on the answer could be
+/// set, cleared, or copied apart.
 ///
-/// Plain numbers rather than a TokenUsage: that type only ever comes out of its own factory, which
+/// A plain number rather than a TokenUsage: that type only ever comes out of its own factory, which
 /// is what keeps an impossible usage from existing, while a stored value has to be readable back by
 /// the serializer. ToTokenUsage is the way back, and it treats a chat file somebody edited by hand
 /// the same way the reading side treats a provider's JSON.
@@ -22,12 +23,7 @@ public sealed record ReportedTokenUsage
     public int PromptTokens { get; init; }
 
     /// <summary>
-    /// What the model wrote in answer.
-    /// </summary>
-    public int CompletionTokens { get; init; }
-
-    /// <summary>
-    /// Which model the numbers were charged for.
+    /// Which model the number was charged for.
     /// </summary>
     /// <remarks>
     /// A token count belongs to the tokenizer which produced it. Switch the model of a chat, and
@@ -52,8 +48,8 @@ public sealed record ReportedTokenUsage
     public int BlockCount { get; init; }
 
     /// <summary>
-    /// States the stored numbers as a usage again.
+    /// States the stored number as a usage again.
     /// </summary>
-    /// <returns>The usage, or TokenUsage.UNKNOWN when the stored numbers state nothing usable.</returns>
-    public TokenUsage ToTokenUsage() => TokenUsage.OfReported(this.PromptTokens, this.CompletionTokens);
+    /// <returns>The usage, or TokenUsage.UNKNOWN when the stored number states nothing usable.</returns>
+    public TokenUsage ToTokenUsage() => TokenUsage.OfReported(this.PromptTokens);
 }