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/tests/test_audit_service.py

@@ -0,0 +1,86 @@
+"""Tests for audit service."""
+import pytest
+
+from app.models.audit_log import AuditLog
+from app.services.audit_service import log_action
+
+
+def test_log_action_basic(db_session, test_admin):
+    """Test basic audit log creation."""
+    audit = log_action(
+        db=db_session,
+        action="booking_approved",
+        user_id=test_admin.id,
+        target_type="booking",
+        target_id=123,
+        details=None
+    )
+
+    assert audit.id is not None
+    assert audit.action == "booking_approved"
+    assert audit.user_id == test_admin.id
+    assert audit.target_type == "booking"
+    assert audit.target_id == 123
+    assert audit.details == {}
+    assert audit.created_at is not None
+
+
+def test_log_action_with_details(db_session, test_admin):
+    """Test audit log with details."""
+    details = {
+        "rejection_reason": "Spațiul este în mentenanță",
+        "old_value": "pending",
+        "new_value": "rejected"
+    }
+
+    audit = log_action(
+        db=db_session,
+        action="booking_rejected",
+        user_id=test_admin.id,
+        target_type="booking",
+        target_id=456,
+        details=details
+    )
+
+    assert audit.details == details
+    assert audit.details["rejection_reason"] == "Spațiul este în mentenanță"
+
+
+def test_log_action_settings_update(db_session, test_admin):
+    """Test audit log for settings update."""
+    changed_fields = {
+        "min_duration_minutes": {"old": 30, "new": 60},
+        "max_duration_minutes": {"old": 480, "new": 720}
+    }
+
+    audit = log_action(
+        db=db_session,
+        action="settings_updated",
+        user_id=test_admin.id,
+        target_type="settings",
+        target_id=1,
+        details={"changed_fields": changed_fields}
+    )
+
+    assert audit.target_type == "settings"
+    assert "changed_fields" in audit.details
+    assert audit.details["changed_fields"]["min_duration_minutes"]["new"] == 60
+
+
+def test_multiple_audit_logs(db_session, test_admin):
+    """Test creating multiple audit logs."""
+    actions = [
+        ("space_created", "space", 1),
+        ("space_updated", "space", 1),
+        ("user_created", "user", 10),
+        ("booking_approved", "booking", 5)
+    ]
+
+    for action, target_type, target_id in actions:
+        log_action(db_session, action, test_admin.id, target_type, target_id)
+
+    # Verify all logs were created
+    logs = db_session.query(AuditLog).filter(AuditLog.user_id == test_admin.id).all()
+    assert len(logs) == 4
+    assert logs[0].action == "space_created"
+    assert logs[3].action == "booking_approved"