Add account hierarchy framework with migrations, RLS policies, and UI components

apps/web/supabase/config.toml

@@ -59,6 +59,11 @@ enable_manual_linking = true
 verify_enabled = true
 enroll_enabled = true
 
+# Enable WebAuthn/Passkey MFA
+[auth.mfa.webauthn]
+verify_enabled = true
+enroll_enabled = true
+
 [auth.email]
 # Allow/disallow new user signups via email to your project.
 enable_signup = true