diff --git a/.gitignore b/.gitignore
index c88f70c..8366f74 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,8 +2,9 @@
 __pycache__/
 *.pyc
 *.log
+# 模型文件 — 只追踪发布版本
 *.pth
-*.pth.*
+!/llm_model_v2_resume_epoch_7.pth
 /tmp/
 
 # 中间数据（旧版临时文件）
diff --git a/llm_model_epoch7_part_aa b/llm_model_epoch7_part_aa
deleted file mode 100644
index 5e0930c..0000000
--- a/llm_model_epoch7_part_aa
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:861ca374c50f29a2d71758756554613b086e949b9a1bdfdb565677695765b2f4
-size 52428800
diff --git a/llm_model_epoch7_part_ab b/llm_model_epoch7_part_ab
deleted file mode 100644
index ef42a5f..0000000
--- a/llm_model_epoch7_part_ab
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ab7bf97d2fcecf68e75d2158e1cabc10dd6257398275dbf12ebbcdbbe84fbc1e
-size 52428800
diff --git a/llm_model_epoch7_part_ac b/llm_model_epoch7_part_ac
deleted file mode 100644
index e4d9b34..0000000
--- a/llm_model_epoch7_part_ac
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4177a8ea2e36fef32470d7e9471571f769557fd94f479c254563bae106d243a8
-size 52428800
diff --git a/llm_model_epoch7_part_ad b/llm_model_epoch7_part_ad
deleted file mode 100644
index 31db2de..0000000
--- a/llm_model_epoch7_part_ad
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4eec556ead5ecf7902064a991fba42983e77cf0f8f004edd90a0ef144e834ee7
-size 3480603
diff --git a/llm_model_v2_epoch7_aa b/llm_model_v2_epoch7_aa
new file mode 100644
index 0000000..7b01563
--- /dev/null
+++ b/llm_model_v2_epoch7_aa
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:65c26c81c0b02594ac8197cb09358ed7827a638d94d5ad78c10a5116ff2f8b2d
+size 80740352
diff --git a/llm_model_v2_epoch7_ab b/llm_model_v2_epoch7_ab
new file mode 100644
index 0000000..d556fba
--- /dev/null
+++ b/llm_model_v2_epoch7_ab
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2d0718d89c5cd49fe42513c9d58c12fd80d0ca0bd76fe96920b214dd38508c86
+size 80026651
diff --git a/merge_model.sh b/merge_model.sh
deleted file mode 100644
index d530231..0000000
--- a/merge_model.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/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 '  "'
\ No newline at end of file