Merge pull request #87 from ecency/fix/ai-image-idempotency-key

fix(ai-image): forward the client's idempotency_key to the upstream

Author: feruzm

dotnet/EcencyApi/Handlers/PrivateApi.Misc.cs

@@ -558,7 +558,9 @@ public static async Task AiGenerateImage(HttpContext ctx)
         {
             ["us"] = username,
         };
-        MiscCopyIfPresent(data, body, "prompt", "aspect_ratio", "power");
+        // idempotency_key lets a retry recover the same paid generation instead of
+        // charging a second one; the upstream validates its format itself.
+        MiscCopyIfPresent(data, body, "prompt", "aspect_ratio", "power", "idempotency_key");
         // AI image generation legitimately takes 10-60s+; keep it long.
         await Upstream.Pipe(
             ApiClient.ApiRequest("ai-image-generate", HttpMethod.Post, null, data, null, 120000), ctx);