- Schema: lyraVoiceId stays, new os_version column on user_devices (Migration 20260515)
- registerDevice() merge-heuristic: if existing record matches userId + same name +
same model + lastSeen < 30 days, update existing instead of inserting new.
Fixes iOS IDFV-reset creating phantom devices on Recovery-Restore.
- register.post.ts: accepts osVersion in body, maps isCurrent in error-path payload
- New util testUser.ts: isTestUser(email) — explicit allowlist for charioanouar@gmail.com
plus existing @rebreak.internal suffix
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
