isomorphic-git实验：环境初始化脚本

scripts/experiments/isomorphic-git-poc/setup.sh

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+#!/bin/bash
+# isomorphic-git 实验环境初始化
+# 在 /data/guanghulab/repo 下执行
+
+cd /data/guanghulab/repo
+
+# 安装 isomorphic-git
+if [ -d node_modules/isomorphic-git ]; then
+  echo "[OK] isomorphic-git already installed"
+else
+  echo "[INSTALL] isomorphic-git..."
+  npm install isomorphic-git 2>&1 | tail -3
+fi
+
+# 确认 .git 目录
+if [ -d .git ]; then
+  echo "[OK] Git repo: $(pwd)"
+else
+  echo "[FAIL] .git not found"
+  exit 1
+fi
+echo "SETUP_DONE"