Add user registration and auth web app

FastAPI + Jinja2 + MariaDB web application with registration,
login, profile, password reset, and email confirmation flows.
All UI in Russian. Styled with Evotor brand colors.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/auth.py

@@ -0,0 +1,23 @@
+from fastapi import Request, Depends
+from sqlalchemy.orm import Session
+from passlib.context import CryptContext
+
+from web.database import get_db
+from web.models import User
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def hash_password(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def verify_password(plain: str, hashed: str) -> bool:
+    return pwd_context.verify(plain, hashed)
+
+
+def get_current_user(request: Request, db: Session = Depends(get_db)) -> User | None:
+    user_id = request.session.get("user_id")
+    if not user_id:
+        return None
+    return db.query(User).filter(User.id == user_id).first()