Step 1 was a single field, making the wizard feel thin. Add "Aantal jaren werkzaam" beside "Gewerkte uren" on the same step (no new step): Draft/Valid gain `jaren`, `next` validates both step-1 fields before advancing, and `validate` parses it for the submitted payload. Verified live: an empty jaren blocks advancing with an inline error. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>