VS87 - Archive collection tree test

Basis: VS86

Changed only the archive collection-filter UI logic for a first tree test:
- archive/theme-config.js adds historicbitsCollectionTree with parent Automatenfotos.
- shared/archive-core/archive-app.js supports tree collection filters.
- shared/archive-core/archive-styles.css adds minimal child-chip styling.
- archive/index.html cache-busts the changed archive core files.

Tree test:
- Parent shown in Archive quick collection bar: Automatenfotos
- Parent filter matches Bosco-Automat, Photomaton and Sequenzen records.
- Children shown when parent/child is active: Bosco-Automat, Photomaton, Sequenzen.

No image/data/caption/project folder changes.