fix(qwen): preserve validated runtime on checkpoint reload

tests/test_app_model_lifecycle.py

@@ -82,9 +82,11 @@ import pathlib
 import sys
 import threading
 import time
+from types import SimpleNamespace
 from unittest.mock import Mock
 
 import app
+from obliteratus.models import loader
 
 root = pathlib.Path(sys.argv[1])
 checkpoint = root / "completed"
@@ -103,11 +105,24 @@ app.AutoModelForCausalLM.from_pretrained = Mock(
     side_effect=lambda source, **kwargs: (calls.append((source, kwargs)), model)[1]
 )
 app.AutoTokenizer.from_pretrained = Mock(return_value=tokenizer)
+app.AutoConfig.from_pretrained = Mock(
+    return_value=SimpleNamespace(model_type="gpt2"),
+)
 app.dev.supports_device_map_auto = lambda: True
 app._load_model_to_device(checkpoint, local_files_only=True)
 assert calls[0][0] == checkpoint
 assert calls[0][1]["local_files_only"] is True
 
+loader.qwen_hybrid_runtime_overrides = Mock(
+    return_value={"attn_implementation": "sdpa", "device_map": {"": 2}},
+)
+app._load_model_to_device(checkpoint, local_files_only=True)
+assert calls[-1][1]["attn_implementation"] == "sdpa"
+assert calls[-1][1]["device_map"] == {"": 2}
+assert calls[-1][1]["device_map"] != "auto"
+loader.qwen_hybrid_runtime_overrides.reset_mock(return_value=True)
+loader.qwen_hybrid_runtime_overrides.return_value = {}
+
 quantization = object()
 loaded_model, loaded_tokenizer = app._reload_local_checkpoint(
     checkpoint,

tests/test_qwen35_contracts.py

@@ -216,6 +216,10 @@ def test_qwen_excise_route_does_not_touch_inputs_gates_or_lm_head():
         torch.equal(after[name], before[name])
         for name in before.keys() - allowed
     )
+    assert pipeline._effective_refinement_passes == 1
+    method_config = pipeline._build_metadata()["method_config"]
+    assert method_config["refinement_passes"] == 1
+    assert method_config["requested_refinement_passes"] == 2
 
 
 @pytest.mark.parametrize("architecture", ["qwen3_5_text", "qwen3_5_moe"])