[2026-08-28] Improved: New parameter open_slots_only for shifts retrieval

Endpoint:

• v1/shifts

Method: GET

Change: New boolean filter paramter open_slots_only

• true: The result will include only shifts with unfilled slots.
• false: (Default) - Deactivate this filter

Distinct from the parameter only_open: Does NOT require employment_id and is not employment-scoped, so it can be used for company-wide overviews. When combined with only_open, both filters are applied (the effective result is the intersection).