domain: add Organization entities and ports (Album, Tag, Collection, FilterCriteria)

crates/domain/tests/value_objects/filter_criteria.rs

@@ -0,0 +1,13 @@
+use domain::value_objects::{FilterCriteria, FilterOperator};
+
+#[test]
+fn serde_roundtrip() {
+    let criteria = FilterCriteria::and(vec![
+        FilterCriteria::condition("rating", FilterOperator::GreaterThan, serde_json::json!(3)),
+        FilterCriteria::condition("type", FilterOperator::Equals, serde_json::json!("image")),
+    ]);
+
+    let json = serde_json::to_string(&criteria).unwrap();
+    let back: FilterCriteria = serde_json::from_str(&json).unwrap();
+    assert_eq!(criteria, back);
+}

crates/domain/tests/value_objects/mod.rs

@@ -1,4 +1,5 @@
 mod checksum;
 mod date_time_stamp;
+mod filter_criteria;
 mod structured_data;
 mod system_id;