Initial commit: secondary school grade archive system.

Add FastAPI/React app with Docker deployment, Ubuntu one-click install, and docs for junior/senior high score tracking and mistake bank.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/core/security.py

@@ -0,0 +1,31 @@
+from datetime import datetime, timedelta, timezone
+from typing import Any
+
+from jose import jwt
+from passlib.context import CryptContext
+
+from app.core.config import settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def create_access_token(subject: str, expires_delta: timedelta | None = None) -> str:
+    expire = datetime.now(timezone.utc) + (
+        expires_delta or timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    )
+    payload: dict[str, Any] = {"sub": subject, "exp": expire, "type": "access"}
+    return jwt.encode(payload, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
+
+
+def create_refresh_token(subject: str) -> str:
+    expire = datetime.now(timezone.utc) + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
+    payload: dict[str, Any] = {"sub": subject, "exp": expire, "type": "refresh"}
+    return jwt.encode(payload, settings.SECRET_KEY, algorithm=settings.ALGORITHM)