fix: remove mtp fields from text config

MVP/qwen35_prune.py

@@ -154,6 +154,8 @@ def build_text_config(full_config: dict, layer_count: int) -> dict:
     source["architectures"] = ["Qwen3_5ForCausalLM"]
     source.pop("vision_config", None)
     source.pop("mtp_config", None)
+    source.pop("mtp_num_hidden_layers", None)
+    source.pop("mtp_use_dedicated_embeddings", None)
     return source
 
 

MVP/tests/test_pruning_contract.py

@@ -83,6 +83,8 @@ def test_text_config_is_standalone_and_keeps_live_attention_fields():
             "linear_value_head_dim": 128,
             "linear_conv_kernel_dim": 4,
             "vocab_size": 248320,
+            "mtp_num_hidden_layers": 1,
+            "mtp_use_dedicated_embeddings": False,
         },
     }
 
@@ -94,6 +96,7 @@ def test_text_config_is_standalone_and_keeps_live_attention_fields():
     assert text["linear_num_value_heads"] == 16
     assert text["tie_word_embeddings"] is True
     assert "vision_config" not in text
+    assert not any(key.startswith("mtp_") for key in text)
 
 
 def test_validator_rejects_vision_mtp_and_duplicate_tied_head():