Improve profile expertise handling by splitting profession and expertise area updates into separate flows.
Add support for multi-select expertise areas (up to 5 items), keeps profession as a single field, and updates validation rules accordingly. Expertise areas are now stored as a JSON-encoded value and returned as an array in responses.
Fix profession clearing behavior: when [profession: null is sent, the value is correctly saved as NULL instead of preserving the old value.
Improve profile expertise handling by splitting profession and expertise area updates into separate flows.
Add support for multi-select expertise areas (up to 5 items), keeps profession as a single field, and updates validation rules accordingly. Expertise areas are now stored as a JSON-encoded value and returned as an array in responses.
Fix profession clearing behavior: when [profession: null is sent, the value is correctly saved as NULL instead of preserving the old value.