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

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

src/files.rs

@@ -725,6 +725,23 @@ pub async fn list_photos<TagD: TagDao, FS: FileSystemAccess>(
         return HttpResponse::BadRequest().finish();
     }
 
+    // A folder whose indexed contents are all hidden versions (typically
+    // `aiedits/`) would open empty: leave it out unless versions are asked
+    // for. Recursive listings are flat and carry no dirs.
+    if !search_recursively && !include_versions && !dirs_set.is_empty() {
+        let candidates: Vec<String> = dirs_set.iter().cloned().collect();
+        let view: Vec<i32> = library.into_iter().map(|l| l.id).collect();
+        match app_state
+            .version_dao
+            .lock()
+            .expect("Unable to lock VersionDao")
+            .dirs_holding_only_hidden_versions(&view, &candidates)
+        {
+            Ok(empty) => dirs_set.retain(|d| !empty.contains(d.trim_end_matches('/'))),
+            Err(e) => warn!("dirs_holding_only_hidden_versions failed: {:?}", e),
+        }
+    }
+
     let dirs: Vec<String> = dirs_set.into_iter().collect();
 
     info!(