refactor(config): require explicit BZOD data directory

tests/ownership_tests.rs

@@ -18,8 +18,7 @@ fn compute_sha256(value: &str) -> String {
 }
 
 fn create_temp_config(temp_dir: PathBuf) -> Config {
-    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.clone();
     config.admin_username = "admin".to_string();
     config.base_url = Some("http://localhost:8080".to_string());