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The register form collected and validated an actual date of birth just to throw it away (backend never stored it beyond a nullable column). Per the roadmap note: don't collect/store DOB right now, just get a client-side "I am 18 or older" confirmation. RegisterRequest.date_of_birth (str) is now over_18 (bool); the endpoint rejects over_18=false with 400 same as before. calculate_age() is kept (unused by /register now) since real DOB collection is coming back in a future pass and deleting it broke test_auth_age_gate.py's import for no benefit. Frontend: DOBEdit LineEdit replaced with an Over18Check CheckBox; api_client.gd's register() now takes a bool instead of a date string. All Godot callers (smoke_test_auth/e2e/world_list/main_menu_ui/main_menu_full_flow) and backend test files updated to match. Full suite verified against a live backend: 61/61 pytest, 6/6 Godot smoke tests (33 individual assertions), all passing. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01M6rUEynmv2QmweocAQYARN