fix(migrations): harden BAT-025 PostgreSQL verification

migrations/env.py

@@ -10,13 +10,14 @@ from app.core.config import get_settings
 config = context.config
 
 if config.config_file_name is not None:
-    fileConfig(config.config_file_name)
+    # Alembic may run in-process (bootstrap/tests); preserve application loggers.
+    fileConfig(config.config_file_name, disable_existing_loggers=False)
 
 target_metadata = None
 
 
 def _configure_database_url() -> str:
-    settings = get_settings()
+    settings = config.attributes.get("portfoliohub_settings") or get_settings()
     database_url = settings.active_database_url
     config.set_main_option("sqlalchemy.url", database_url.replace("%", "%%"))
     return database_url