OCR Worker: add check and systemd install scripts.

deploy/ocr-worker/start.sh

@@ -6,12 +6,21 @@ VENV="${ROOT}/.venv"
 HOST="${OCR_HOST:-0.0.0.0}"
 PORT="${OCR_PORT:-23567}"
 
+export OCR_USE_GPU="${OCR_USE_GPU:-true}"
+export OCR_HOST="${HOST}"
+export OCR_PORT="${PORT}"
+
 if [[ ! -d "${VENV}" ]]; then
-  echo "未找到虚拟环境，请先运行: bash install.sh"
+  echo "未找到虚拟环境，请先在本目录运行: bash install.sh"
   exit 1
 fi
 
 # shellcheck disable=SC1091
 source "${VENV}/bin/activate"
 cd "${ROOT}"
-exec uvicorn app:app --host "${HOST}" --port "${PORT}"
+
+echo "==> 启动 OCR Worker: http://${HOST}:${PORT}  (GPU=${OCR_USE_GPU})"
+echo "    按 Ctrl+C 停止。后台运行请用: sudo bash install-service.sh"
+echo ""
+
+exec uvicorn app:app --host "${HOST}" --port "${PORT}" --log-level info