* feat: implement SSO group synchronization for SAML and OIDC
- Add group_sync column to auth_providers table
- Extract groups from SAML attributes (memberOf, groups, roles)
- Extract groups from OIDC claims (groups, roles)
- Implement case-insensitive group matching with auto-creation
- Sync user groups on each SSO login
- Ensure only one provider can have group sync enabled at a time
- Add group sync toggle to SAML and OIDC configuration forms
* rename column
74cd890bdd