Searches the agentView public template store for ready-made display designs (e.g. 'Zahnarzt-Wartezimmer', 'Bistro warm', 'Empfang'). Each template is a polished HTML design a user can push to one of their Türschild / digital-signage displays via send_store_template_to_display. Use this when the user describes a use case and wants to pick a pre-built design instead of having you generate raw HTML. No authentication required. Returns total, offset, limit, language and a templates array; each entry has slug, title, description, category, optional suite (design family), tags, theme, designStyle, placement, previewImageUrl (screenshot PNG), detailPath, previewPath, featured and publishedAt. Use get_store_template_details(slug) for the full rich description before recommending a template.