feat: completed base feature set for the app

crates/bds-core/tests/m4_generation_engine.rs

@@ -36,6 +36,7 @@ fn make_metadata() -> ProjectMetadata {
         main_language: Some("en".into()),
         default_author: None,
         max_posts_per_page: 50,
+        image_import_concurrency: 4,
         blogmark_category: None,
         pico_theme: None,
         semantic_similarity_enabled: false,