IAM Schema

The first schema establishes the foundation for account ownership, subusers, roles, permissions, module access, and auditing.

Tables created by /setup:

iam_accounts
iam_subusers
iam_roles
iam_permissions
iam_role_permissions
iam_subuser_roles
iam_module_access
iam_audit_log

Expected D1 binding name:
d1-db