Update engines.json

engines.json

@@ -7,6 +7,11 @@
     {
         "url": "https://huggingface.co/QuantFactory/Phi-3-mini-128k-instruct-GGUF/resolve/main/Phi-3-mini-128k-instruct.Q4_K_M.gguf",
         "name": "phi-3.5-mini-instruct",
-        "n_batch": 64
+        "n_batch": 72
+    },
+    {
+        "url": "https://huggingface.co/unsloth/Qwen3-4B-GGUF/resolve/main/Qwen3-4B-Q4_K_M.gguf",
+        "name": "qwen3-4b",
+        "n_batch": 72
     }
 ]