Fix startup and init

models.py

@@ -22,5 +22,13 @@ class Photo(Base):
     unique_key = Column(String(16), nullable=False)  # Add this line
 
 engine = create_engine('sqlite:///photos.db')
-Base.metadata.create_all(engine)
+
+def init_db():
+    try:
+        Base.metadata.create_all(engine)
+    except Exception as e:
+        # Tables already exist, skip creation
+        pass
+
+init_db()
 Session = sessionmaker(bind=engine)