Update RT-Qwen3-4B with latest interleave_focal checkpoint

RT-Qwen3-4B/merge_meta.json

@@ -0,0 +1,7 @@
+{
+  "base_model": "/inspire/hdd/global_user/shixiaoxin-253107030017/sxx/multi-head/extended-models/Qwen3-4B-Instruct-2507-Extended",
+  "lora_path": "output/4_interleave_focal/epoch4_end",
+  "vocab_size": 151686,
+  "merge_gpu": 0,
+  "merge_time_sec": 124.6
+}

RT-Qwen3-4B/model-00001-of-00002.safetensors

@@ -1,3 +1,3 @@
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RT-Qwen3-4B/model-00002-of-00002.safetensors

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RT-Qwen3-4B/model.safetensors.index.json

@@ -1,10 +1,9 @@
 {
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