- Add STEP_FIELDS constant mapping each step to its required fields
- Extract trigger() from useForm and call it on Next click
- Only advance to next step when trigger() returns true, blocking
silent failures where invalid data could reach the Review step
- Add CreateServerPage.test.tsx with 8 tests covering step navigation,
validation blocking, happy path, and submit mutation
- Update CLAUDE.md: mark /servers/new Complete, remove resolved bug
- Mark implementation plan as completed
