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Name micro-fixes (close the normalization arc): - collapseInitials merges "J C Escarra" -> "JC Escarra" (display + key); both playerName.js copies. Added mickey:michael nickname. Onboarding flow (end-to-end, complete): - Storage: Supabase user_metadata.preferences (no migration). - API: src/routes/preferences.js GET/POST (requireAuth, admin getUserById/ updateUserById, partial merge + sanitize) + Next /api/preferences proxy. - Page: web onboarding/page.tsx — 3 steps (sports >=1 / books skip / bankroll presets+custom+skip) -> SIGNAL ACTIVE -> POST onboarding_complete:true -> 2s -> /dashboard. Redirects to login when unauthenticated. - Redirect: dashboard fetches /api/preferences fresh; new+incomplete users (created_at >= cutoff) -> /onboarding; never while auth loading; existing users exempt. - Personalization: Slate default tab = prefs.sports[0]; preferred books glow in the card lines grid (lib/books isPreferredBook, threaded dash->Slate->GameCard). - Settings: PREFERENCES section loads + edits + saves sports/books/limit. Backend 2156 -> 2185 tests (+29), 184 suites. Web build clean (exit 0). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>