55dbd7f6e1
The catalog page was one undifferentiated grid filtered only by tier, so a memory provider sat between two Desktop panes. Entries now carry an optional ``category`` (memory | desktop | platform | web | tools | voice | automation | models | other, default other) that the loader, the admission validator and the site extractor all understand. /docs/plugins renders one shelf per category in browse mode, a category pill row under the tier pills, a clickable category chip on every card, and a results bar (active category, count, clear) when a filter or search flattens the view. ``hermes plugins catalog`` gains a Category column and groups by it. All 18 shipped entries are categorised. Unknown categories fail admission (same contract as tier) so a typo cannot create a phantom shelf.