Return current controlled values, catalog labels and destination extent. local_areas is omitted without a city query, included when city is supplied, and [] for a blank city. No municipality list endpoint exists. All examples are synthetic public-wire fixtures, not live listings. Optional fields are populated to demonstrate schema coverage; real responses may omit them. Catalog/LocalArea keys, labels, climate colors, phones, assets and addresses in examples are illustrative, not an active registry. Fetch reference data before using registry-backed filter values. Complete example request: GET /api/v1/public/property-reference?city=Adeje. Examples include all enum values; illustrative climate labels/colors and registry records are not canonical. Never hard-code example registry keys.