Initial commit: backend scaffold, auth, frontend login

- FastAPI + SQLAlchemy async + Alembic + Postgres backend
- Auth: JWT access + rotating refresh tokens, argon2, roles, audit log
- React 19 + Vite frontend: login page, protected route, auth context
- Docker Compose: postgres, redis, migrate, api, worker (placeholder), frontend/nginx

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/app/schemas/auth.py

@@ -0,0 +1,44 @@
+"""Схемы запросов и ответов аутентификации."""
+
+from __future__ import annotations
+
+import uuid
+
+from pydantic import BaseModel, ConfigDict, EmailStr, Field
+
+from app.db.models.user import UserRole
+
+
+class LoginRequest(BaseModel):
+    email: EmailStr
+    password: str = Field(min_length=1, max_length=128)
+
+
+class RefreshRequest(BaseModel):
+    refresh_token: str = Field(min_length=1)
+
+
+class TokenPair(BaseModel):
+    access_token: str
+    refresh_token: str
+    token_type: str = "bearer"
+    expires_in: int = Field(description="Время жизни access-токена в секундах")
+
+
+class UserOut(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: uuid.UUID
+    email: EmailStr
+    full_name: str
+    role: UserRole
+    is_active: bool
+
+
+class LoginResponse(TokenPair):
+    user: UserOut
+
+
+class ChangePasswordRequest(BaseModel):
+    current_password: str = Field(min_length=1, max_length=128)
+    new_password: str = Field(min_length=10, max_length=128)