289903c8bd
Adds VisaStatus enum, VisaApplication model 1:1 with AttendingMember (cascade-delete), and Program.visaStatusVisibleToMembers Boolean toggle. The model intentionally stores process metadata only — status, optional nationality, key dates, free-text notes. Sensitive documents (passport scans, invitation letters, decision papers) continue to flow over email and are never persisted in the platform. Migration is purely additive: CREATE TYPE / CREATE TABLE / ADD COLUMN / ADD FK. No DROP / ALTER on existing data. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>