👤 Referee Profile & Level System Redesign

Description

Redesign referee profile system according to CLAUDE.md specifications

Requirements

• Remove Certifications, replace with admin-defined Roles
• Eliminate Preferred Positions
• Update level system: Rookie, Junior, Senior (replace Elite/Community)
• Add White Whistle flag for Rookie/Junior levels
• Display white whistle icon in profiles and assignments
• Postal code entry for distance calculations

Acceptance Criteria

• Referee registration includes postal code
• New level system is implemented
• White whistle functionality works
• Role system is admin-configurable
• Distance calculation integration ready

Technical Notes

• Backend routes: backend/src/routes/referees.js, backend/src/routes/referee-levels.js
• Database migration needed for schema changes
• Frontend components need updates

Priority

Medium - Profile system improvement