multi value filtering added and font color fix for duplicates

docs/ASSET-VISUALS.md

@@ -42,6 +42,7 @@ Version 0.5.5.60 adds a reusable standard image library for assets and categorie
 - Library images are referenced, not copied per asset/category.
 - Removing or replacing an association never deletes the physical library file.
 - Uploads never overwrite an existing file. If a name already exists, a numeric suffix is added (`switch-1.png`, `switch-2.png`, ...).
-- Administrators may also place supported image files directly into the persistent host directory.
+- Administrators may also place supported image files directly into the persistent host directory. The directory is read from the filesystem whenever an asset or category form is opened.
+- Subdirectories below `./data/uploads/library` are scanned recursively and their relative path is shown in the selector.
 
 Orphaned or unused library images are intentionally retained. A later maintenance function can safely identify and remove unreferenced files.