fix(install): exclude data/ from tar extraction on reinstall

Docker writes data/mysql and data/redis as root; re-extracting
over them causes tar permission errors and aborts the script.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

install.sh

@@ -183,7 +183,7 @@ if [ -d "$INSTALL_DIR" ] && [ -f "$INSTALL_DIR/docker-compose.yml" ]; then
 fi
 
 mkdir -p "$INSTALL_DIR"
-tar -xzf "$TMP_PKG" -C "$INSTALL_DIR" --strip-components=1
+tar -xzf "$TMP_PKG" -C "$INSTALL_DIR" --strip-components=1 --exclude='*/data'
 chmod +x "$INSTALL_DIR/scripts/"*.sh "$INSTALL_DIR/install.sh" 2>/dev/null || true
 ok "部署包解压完成: $INSTALL_DIR"