fix: bootstrap tty reads, preserve CLI args, safe env write

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/install.sh

@@ -168,7 +168,8 @@ bash "$ROOT_DIR/scripts/enable-panel-https.sh"
 rm -f /etc/nginx/sites-enabled/panel /etc/nginx/sites-available/panel
 
 log "安装 Python 面板依赖 ..."
-python3 -m venv "$ROOT_DIR/panel/venv"
+python3 -m venv --clear "$ROOT_DIR/panel/venv" 2>/dev/null \
+  || { rm -rf "$ROOT_DIR/panel/venv"; python3 -m venv "$ROOT_DIR/panel/venv"; }
 "$ROOT_DIR/panel/venv/bin/pip" install -q --upgrade pip
 "$ROOT_DIR/panel/venv/bin/pip" install -q -r "$ROOT_DIR/panel/requirements.txt"
 "$ROOT_DIR/panel/venv/bin/python" -c "import flask" \