v0.1.0: CRM/ERP 系统内测版本 - 安全加固完成

- Docker bridge 网络隔离（8000 端口封死）
- Gunicorn 4 Worker 多进程
- Alembic 数据库迁移基线
- 日志轮转 20m×3
- JWT 密钥 + DB 密码 + CORS 收紧
- 3-2-1 备份链路（NAS + R740-B 冷备）
- 连接池 pool_pre_ping + pool_recycle=3600

backend/app/api/v1/endpoints/health.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+"""
+健康检查端点
+用于 Nginx/LB 探活和数据库连接状态探测。
+"""
+
+from fastapi import APIRouter, Depends
+from sqlalchemy import text
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.core.database import get_db
+
+router = APIRouter()
+
+
+@router.get("/health", summary="健康检查", tags=["系统"])
+async def health_check(db: AsyncSession = Depends(get_db)):
+    """
+    探测服务与数据库连接是否存活。
+    - 数据库可达 → {"status": "healthy", "database": "connected"}
+    - 数据库不可达 → {"status": "degraded", "database": "disconnected", "detail": "..."}
+    """
+    try:
+        await db.execute(text("SELECT 1"))
+        return {"status": "healthy", "database": "connected"}
+    except Exception as e:
+        return {
+            "status": "degraded",
+            "database": "disconnected",
+            "detail": str(e),
+        }