添加模型文件分片 (Epoch 7, 3 parts + merge script)

llm_model_epoch7_part_aa

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+version https://git-lfs.github.com/spec/v1
+oid sha256:861ca374c50f29a2d71758756554613b086e949b9a1bdfdb565677695765b2f4
+size 52428800

llm_model_epoch7_part_ab

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+version https://git-lfs.github.com/spec/v1
+oid sha256:ab7bf97d2fcecf68e75d2158e1cabc10dd6257398275dbf12ebbcdbbe84fbc1e
+size 52428800

llm_model_epoch7_part_ac

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+version https://git-lfs.github.com/spec/v1
+oid sha256:4177a8ea2e36fef32470d7e9471571f769557fd94f479c254563bae106d243a8
+size 52428800

llm_model_epoch7_part_ad

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+version https://git-lfs.github.com/spec/v1
+oid sha256:4eec556ead5ecf7902064a991fba42983e77cf0f8f004edd90a0ef144e834ee7
+size 3480603

merge_model.sh

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+#!/bin/bash
+# 合并分片模型文件
+# 用法: bash merge_model.sh
+
+PARTS="llm_model_epoch7_part_aa llm_model_epoch7_part_ab llm_model_epoch7_part_ac llm_model_epoch7_part_ad"
+OUTPUT="llm_model_v2_resume_epoch_7.pth"
+
+echo "合并模型分片 → $OUTPUT ..."
+cat $PARTS > $OUTPUT
+echo "✅ 合并完成: $(ls -lh $OUTPUT | awk '{print $5}')"
+echo ""
+echo "使用方法:"
+echo "  python3 -c \"import json, torch;"
+echo "    from llm_chat_improved import LLMModel, LLMChat, tokenizer_instance;"
+echo '    vocab = json.load(open("vocab_v2.json"));'
+echo '    ckpt = torch.load("llm_model_v2_resume_epoch_7.pth", map_location="cpu");'
+echo '    chat = LLMChat(LLMModel(...), vocab, device="cpu");'
+echo '    print(chat.generate_response("小狸你好呀"));'
+echo '  "'