Hide folders holding only hidden versions from /photos dirs (#194)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/versions/integration_tests.rs

@@ -433,6 +433,35 @@ async fn photos_hides_versions_and_adds_parallel_arrays() {
     );
 }
 
+#[actix_rt::test]
+async fn folders_holding_only_hidden_versions_are_left_out_of_dirs() {
+    let (fx, _o, _v1, _v2) = seeded();
+    // A second folder whose aiedits holds a version that is NOT hidden
+    // (its original isn't indexed), and a folder nothing is indexed under.
+    fx.put_png("2004/album_a/aiedits/lost.jpg.edit.png", None, 20);
+    std::fs::create_dir_all(fx.root.join("2004/not_indexed")).unwrap();
+    let app = photos_app!(fx);
+
+    let dirs = |body: &serde_json::Value| -> Vec<String> {
+        let mut d: Vec<String> = body["dirs"]
+            .as_array()
+            .unwrap()
+            .iter()
+            .map(|v| v.as_str().unwrap().to_string())
+            .collect();
+        d.sort();
+        d
+    };
+    let (_, body) = get_json!(app, "/photos?path=2004");
+    assert_eq!(dirs(&body), vec!["2004/album_a", "2004/not_indexed"]);
+
+    let (_, body) = get_json!(app, "/photos?path=2004&include_versions=true");
+    assert_eq!(
+        dirs(&body),
+        vec!["2004/aiedits", "2004/album_a", "2004/not_indexed"]
+    );
+}
+
 #[actix_rt::test]
 async fn photos_without_versions_is_unchanged() {
     let fx = fx();