feat: Updated OpenAPI spec

src/libs/Speechify/Generated/Speechify.ISubpackageTtsSubpackageTtsAgentsClient.Create.g.cs

@@ -23,7 +23,7 @@ public partial interface ISubpackageTtsSubpackageTtsAgentsClient
         /// </summary>
         /// <param name="name"></param>
         /// <param name="slug">
-        /// Optional; auto-generated from name if omitted.
+        /// Optional. Server derives slug from name with a random suffix when omitted; if you supply your own, a collision returns 400 'slug already taken'.
         /// </param>
         /// <param name="prompt"></param>
         /// <param name="firstMessage">

src/libs/Speechify/Generated/Speechify.Models.TtsCreateAgentRequest.g.cs

@@ -16,7 +16,7 @@ public sealed partial class TtsCreateAgentRequest
         public required string Name { get; set; }
 
         /// <summary>
-        /// Optional; auto-generated from name if omitted.
+        /// Optional. Server derives slug from name with a random suffix when omitted; if you supply your own, a collision returns 400 'slug already taken'.
         /// </summary>
         [global::System.Text.Json.Serialization.JsonPropertyName("slug")]
         public string? Slug { get; set; }
@@ -108,7 +108,7 @@ public sealed partial class TtsCreateAgentRequest
         /// Voice slug from the VMS catalog (see GET /v1/voices). Required — the server rejects writes with an unknown or empty slug.
         /// </param>
         /// <param name="slug">
-        /// Optional; auto-generated from name if omitted.
+        /// Optional. Server derives slug from name with a random suffix when omitted; if you supply your own, a collision returns 400 'slug already taken'.
         /// </param>
         /// <param name="prompt"></param>
         /// <param name="firstMessage">

src/libs/Speechify/Generated/Speechify.SubpackageTtsSubpackageTtsAgentsClient.Create.g.cs

@@ -393,7 +393,7 @@ partial void ProcessCreateResponseContent(
         /// </summary>
         /// <param name="name"></param>
         /// <param name="slug">
-        /// Optional; auto-generated from name if omitted.
+        /// Optional. Server derives slug from name with a random suffix when omitted; if you supply your own, a collision returns 400 'slug already taken'.
         /// </param>
         /// <param name="prompt"></param>
         /// <param name="firstMessage">