release: bump version to 0.49.0

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

backend/app/models/user.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Boolean, Column, Integer, String, DateTime
+from sqlalchemy import Boolean, Column, DateTime, Integer, JSON, String
 from sqlalchemy.sql import func
 
 from app.db.session import Base
@@ -12,6 +12,7 @@ class User(Base):
     email = Column(String(255), unique=True, index=True, nullable=False)
     password_hash = Column(String(255), nullable=False)
     role = Column(String(20), default="viewer")
+    gatekeeper_groups = Column(JSON, default=list)
     is_active = Column(Boolean, default=True)
     last_login_at = Column(DateTime(timezone=True))
     created_at = Column(DateTime(timezone=True), server_default=func.now())