add prod env

.env.prod

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+# 本地/联调。部署项以外默认值见 `app/baked/algorithm.py`、`app/baked/pipeline.py`。
+# 启动前执行 `alembic upgrade head`（`./start.sh` 已跑）。
+
+# --- PostgreSQL ---
+POSTGRES_USER=postgres
+POSTGRES_PASSWORD=postgres
+POSTGRES_DB=operation_room
+POSTGRES_HOST=localhost
+POSTGRES_PORT=35432
+# DATABASE_URL=postgresql+asyncpg://postgres:postgres@localhost:35432/operation_room
+
+# --- 手术室站点配置（严格 JSON：仅含 video_rtsp_urls + voice_or_room_bindings）---
+# 示例：app/resources/or_site_config.sample.json。一键联调会向该文件合并更新 video_rtsp_urls，须可写。
+OR_SITE_CONFIG_JSON_FILE=app/resources/or_site_config.sample.json
+
+# --- 百度 ---
+BAIDU_APP_ID=31461922
+BAIDU_API_KEY=8NjVDPUl64fg7InpxOka69TE
+BAIDU_SECRET_KEY=DzIO6BTdABb0jFu80jWGDfmpxFfwlvA0
+BAIDU_ASR_DEV_PID=1537
+# 人脸脚本 `scripts/baidu_face_1n_search.py`
+BAIDU_FACE_GROUP_ID_LIST=2_1
+
+# --- MinIO ---
+MINIO_ENDPOINT=127.0.0.1:9000
+MINIO_ACCESS_KEY=minioadmin
+MINIO_SECRET_KEY=minioadmin
+MINIO_BUCKET=operation-room-voice
+MINIO_SECURE=false
+
+# --- Demo 客户端联调 ---
+DEMO_CORS_ENABLED=true
+DEMO_CORS_ORIGINS=*
+DEMO_ORCHESTRATOR_ENABLED=true
+DEMO_ORCHESTRATOR_RTSP_PORT=18554
+DEMO_ORCHESTRATOR_RTSP_JSON_HOST=127.0.0.1