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/schemas/auth.py

@@ -0,0 +1,49 @@
+"""Authentication schemas."""
+import re
+
+from pydantic import BaseModel, EmailStr, Field, field_validator
+
+
+class LoginRequest(BaseModel):
+    """Login request schema."""
+
+    email: EmailStr
+    password: str
+
+
+class UserRegister(BaseModel):
+    """User registration schema."""
+
+    email: EmailStr
+    password: str = Field(..., min_length=8)
+    confirm_password: str
+    full_name: str = Field(..., min_length=2, max_length=200)
+    organization: str = Field(..., min_length=2, max_length=200)
+
+    @field_validator("password")
+    @classmethod
+    def validate_password(cls, v: str) -> str:
+        """Validate password strength."""
+        if len(v) < 8:
+            raise ValueError("Password must be at least 8 characters")
+        if not re.search(r"[A-Z]", v):
+            raise ValueError("Password must contain at least one uppercase letter")
+        if not re.search(r"[a-z]", v):
+            raise ValueError("Password must contain at least one lowercase letter")
+        if not re.search(r"[0-9]", v):
+            raise ValueError("Password must contain at least one digit")
+        return v
+
+    @field_validator("confirm_password")
+    @classmethod
+    def passwords_match(cls, v: str, info) -> str:
+        """Ensure passwords match."""
+        if "password" in info.data and v != info.data["password"]:
+            raise ValueError("Passwords do not match")
+        return v
+
+
+class EmailVerificationRequest(BaseModel):
+    """Email verification request schema."""
+
+    token: str