feat: Space Booking System - MVP complet

Sistem web pentru rezervarea de birouri și săli de ședință
cu flux de aprobare administrativă.

Stack: FastAPI + Vue.js 3 + SQLite + TypeScript

Features implementate:
- Autentificare JWT + Self-registration cu email verification
- CRUD Spații, Utilizatori, Settings (Admin)
- Calendar interactiv (FullCalendar) cu drag-and-drop
- Creare rezervări cu validare (durată, program, overlap, max/zi)
- Rezervări recurente (săptămânal)
- Admin: aprobare/respingere/anulare cereri
- Admin: creare directă rezervări (bypass approval)
- Admin: editare orice rezervare
- User: editare/anulare rezervări proprii
- Notificări in-app (bell icon + dropdown)
- Notificări email (async SMTP cu BackgroundTasks)
- Jurnal acțiuni administrative (audit log)
- Rapoarte avansate (utilizare, top users, approval rate)
- Șabloane rezervări (booking templates)
- Atașamente fișiere (upload/download)
- Conflict warnings (verificare disponibilitate real-time)
- Integrare Google Calendar (OAuth2)
- Suport timezone (UTC storage + user preference)
- 225+ teste backend

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

backend/app/core/__init__.py

@@ -0,0 +1 @@
+# Core module

backend/app/core/config.py

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+"""Application configuration."""
+from typing import List
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    """Application settings."""
+
+    model_config = SettingsConfigDict(
+        env_file=".env",
+        env_file_encoding="utf-8",
+        case_sensitive=False
+    )
+
+    # App
+    app_name: str = "Space Booking API"
+    debug: bool = False
+
+    # Database
+    database_url: str = "sqlite:///./space_booking.db"
+
+    # JWT
+    secret_key: str = "your-secret-key-change-in-production"
+    algorithm: str = "HS256"
+    access_token_expire_minutes: int = 1440  # 24 hours
+
+    # SMTP
+    smtp_host: str = "localhost"
+    smtp_port: int = 1025  # MailHog default
+    smtp_user: str = ""
+    smtp_password: str = ""
+    smtp_from_address: str = "noreply@space-booking.local"
+    smtp_enabled: bool = False  # Disable by default for dev
+
+    # Frontend
+    frontend_url: str = "http://localhost:5173"
+
+    # Google Calendar OAuth
+    google_client_id: str = ""
+    google_client_secret: str = ""
+    google_redirect_uri: str = "http://localhost:8000/api/integrations/google/callback"
+    google_scopes: List[str] = [
+        "https://www.googleapis.com/auth/calendar",
+        "https://www.googleapis.com/auth/calendar.events"
+    ]
+
+
+settings = Settings()

backend/app/core/deps.py

@@ -0,0 +1,52 @@
+"""Dependencies for FastAPI routes."""
+from typing import Annotated
+
+from fastapi import Depends, HTTPException, status
+from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
+from jose import JWTError, jwt
+from sqlalchemy.orm import Session
+
+from app.core.config import settings
+from app.db.session import get_db
+from app.models.user import User
+
+security = HTTPBearer()
+
+
+def get_current_user(
+    credentials: Annotated[HTTPAuthorizationCredentials, Depends(security)],
+    db: Annotated[Session, Depends(get_db)],
+) -> User:
+    """Get current authenticated user from JWT token."""
+    credentials_exception = HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Could not validate credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+
+    try:
+        token = credentials.credentials
+        payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
+        user_id: str | None = payload.get("sub")
+        if user_id is None:
+            raise credentials_exception
+    except JWTError:
+        raise credentials_exception
+
+    user = db.query(User).filter(User.id == int(user_id)).first()
+    if user is None or not user.is_active:
+        raise credentials_exception
+
+    return user
+
+
+def get_current_admin(
+    current_user: Annotated[User, Depends(get_current_user)],
+) -> User:
+    """Verify current user is admin."""
+    if current_user.role != "admin":
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Not enough permissions",
+        )
+    return current_user

backend/app/core/security.py

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+"""Security utilities for authentication and authorization."""
+from datetime import datetime, timedelta
+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:
+    """Verify a password against a hash."""
+    result: bool = pwd_context.verify(plain_password, hashed_password)
+    return result
+
+
+def get_password_hash(password: str) -> str:
+    """Generate password hash."""
+    hashed: str = pwd_context.hash(password)
+    return hashed
+
+
+def create_access_token(subject: str | int, expires_delta: timedelta | None = None) -> str:
+    """Create JWT access token."""
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(
+            minutes=settings.access_token_expire_minutes
+        )
+
+    to_encode: dict[str, Any] = {"exp": expire, "sub": str(subject)}
+    encoded_jwt: str = jwt.encode(to_encode, settings.secret_key, algorithm=settings.algorithm)
+    return encoded_jwt