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The standalone Catalog page added nothing the Connectors page could not do: drop it (component, route, sidebar entry) and move its affordances onto the Connectors page — the Add-connector dropdown (marketplace / manual form, now at #connectors/new) and per-row removal for the admin. Replace the card grid with a sharper row list (4px radius) built for scanning status and acting; the marketplace's back link now returns to #connectors. i18n keys renamed catalog.* -> connectors.add/new/*.