请在 /home/enzo/projects/hive-manage-v3/ 下创建以下 4 个文件，内容必须完全一致。

## 文件 1: .gitignore
```
__pycache__/
*.pyc
.env
node_modules/
dist/
.pytest_cache/
*.egg-info/
venv/
.DS_Store
```

## 文件 2: README.md
```
# Hive Manage v3

蜂群运维中台 — 58 个 Hermes Agent Profile 的批量管控面板。

## 技术栈

- 后端: FastAPI + SQLAlchemy async + PostgreSQL
- 前端: React 19 + TypeScript + Tailwind CSS + Vite

## 快速开始

见 deploy/ 目录下的部署文档。
```

## 文件 3: backend/pyproject.toml
```
[project]
name = "hive-manage-v3"
version = "0.1.0"
requires-python = ">=3.12"
dependencies = [
    "fastapi[standard]>=0.115",
    "sqlalchemy[asyncio]>=2.0",
    "asyncpg>=0.30",
    "alembic>=1.14",
    "pydantic>=2.10",
    "pydantic-settings>=2.7",
    "python-jose[cryptography]>=3.3",
    "passlib[bcrypt]>=1.7",
    "httpx>=0.28",
    "uvicorn[standard]>=0.34",
]
[project.optional-dependencies]
dev = [
    "pytest>=8.3",
    "pytest-asyncio>=0.25",
    "httpx>=0.28",
]
```

## 文件 4: backend/.env.example
```
DATABASE_URL=postgresql+asyncpg://hive_admin:changeme@localhost:5432/hive_manage_v3
JWT_SECRET=change-me-to-random-string
JWT_ALGORITHM=HS256
JWT_EXPIRE_MINUTES=1440
HERMES_CLI_PATH=/home/enzo/.local/bin/hermes
HERMES_PROFILES_ROOT=/home/enzo/.hermes/profiles
ADMIN_EMAIL=admin@zhiwei.local
ADMIN_PASSWORD=admin123
```

backend 目录如不存在请先创建。创建完成后用 `cat` 验证每个文件内容是否正确。