Installs a published store template onto one of the authenticated user's displays. The server materializes the template HTML, auto-creates any required data slots (reusing existing slots from a prior install when possible) and publishes the result so the Türschild updates within seconds. Optional data_slot_overrides bake per-slot JSON directly into the install so a 'show my daily menu' flow does not need a second set_data_slot call. Requires authentication with at least content_only scope, control access to the target display, and (for API-key callers) the display.send capability. Errors: 'template_not_found', 'display_not_found', 'access_denied', 'slot_install_failed', 'storage_quota_exceeded', 'invalid_slot_override', 'publish_failed'. Always call get_store_template_install_options first to know which slots the template needs.
Connector