updates

Backend/alembic/env.py

@@ -1,5 +1,5 @@
 from logging.config import fileConfig
-from sqlalchemy import engine_from_config
+from sqlalchemy import create_engine
 from sqlalchemy import pool
 from alembic import context
 import os
@@ -15,17 +15,19 @@ config = context.config
 if config.config_file_name is not None:
     fileConfig(config.config_file_name)
 database_url = settings.database_url
-config.set_main_option('sqlalchemy.url', database_url)
 target_metadata = Base.metadata
 
 def run_migrations_offline() -> None:
-    url = config.get_main_option('sqlalchemy.url')
+    """Run migrations in 'offline' mode."""
+    url = database_url
     context.configure(url=url, target_metadata=target_metadata, literal_binds=True, dialect_opts={'paramstyle': 'named'})
     with context.begin_transaction():
         context.run_migrations()
 
 def run_migrations_online() -> None:
-    connectable = engine_from_config(config.get_section(config.config_ini_section, {}), prefix='sqlalchemy.', poolclass=pool.NullPool)
+    """Run migrations in 'online' mode."""
+    # Create engine directly from URL to avoid ConfigParser interpolation issues
+    connectable = create_engine(database_url, poolclass=pool.NullPool)
     with connectable.connect() as connection:
         context.configure(connection=connection, target_metadata=target_metadata)
         with context.begin_transaction():