feat: register INSERT now uses status='registered' + registration_time=NOW()

release/migrate_add_registered_status.sql

@@ -0,0 +1,7 @@
+-- Migration: Add 'registered' status to videos status check constraint
+-- Date: 2026-05-15
+-- Usage: psql -U accusys -d momentry -f migrate_add_registered_status.sql
+
+ALTER TABLE videos DROP CONSTRAINT IF EXISTS chk_videos_status;
+ALTER TABLE videos ADD CONSTRAINT chk_videos_status
+  CHECK (status::text = ANY (ARRAY['registered'::text, 'pending'::text, 'processing'::text, 'completed'::text, 'failed'::text]));