refactor(config): require explicit BZOD data directory

tests/v08_admin_user_route_boundary_tests.rs

@@ -55,8 +55,7 @@ impl TestHarness {
         let temp_dir =
             std::env::temp_dir().join(format!("bzod_user_boundary_{}", uuid::Uuid::new_v4()));
         fs::create_dir_all(&temp_dir).unwrap();
-        let mut config = Config::load();
-        config.data_dir = temp_dir.clone();
+        let mut config = Config::load_with_cli(Some(&temp_dir)).unwrap();
         config.backup_dir = temp_dir.join("backups");
         config.base_url = Some("http://localhost:8080".to_string());