初始提交：项目基础结构

- backend: FastAPI 后端服务 (Python)
- frontend: React + Tauri 前端应用
- docker-compose.yml: 容器编排配置

backend/app/core/security.py

@@ -0,0 +1,29 @@
+"""安全模块 — JWT Token 生成与验证"""
+from datetime import datetime, timedelta, timezone
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from app.core.config import settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+ALGORITHM = "HS256"
+
+
+def create_access_token(data: dict, expires_delta: timedelta | None = None) -> str:
+    """生成 JWT Access Token"""
+    to_encode = data.copy()
+    expire = datetime.now(timezone.utc) + (
+        expires_delta or timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    )
+    to_encode.update({"exp": expire})
+    return jwt.encode(to_encode, settings.SECRET_KEY, algorithm=ALGORITHM)
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    """验证明文密码 vs 哈希密码"""
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def hash_password(password: str) -> str:
+    """对明文密码进行哈希"""
+    return pwd_context.hash(password)