- Add LogtoManagementClient methods for SSO connector CRUD + org JIT
- Add TenantSsoService with tenant isolation (validates connector-org link)
- Add TenantSsoController at /api/tenant/sso with test endpoint
- Create SsoPage with provider selection, dynamic config form, test button
- Remove old OIDC config endpoints from tenant portal (server OIDC is
now platform-managed, set during provisioning)
- Sidebar: OIDC -> SSO with Shield icon
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>