Add one-click env restore script

INSTALL_ENV.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+TARGET_DIR="./envs/qwen"
+mkdir -p "$(dirname "$TARGET_DIR")"
+tar -xzf env/qwen-conda-env-linux-x86_64.tar.gz -C "$(dirname "$TARGET_DIR")"
+( cd "$TARGET_DIR" && ./bin/conda-unpack )
+echo "✅ 环境恢复完成：source \"$TARGET_DIR/bin/activate\""