refactor(admin): split sso page.tsx into colocated components

Extract types, constants, helpers, and UI pieces (shared LoadingSkeleton/
EmptyState/StatusBadge/CopyButton, SSOConfigFormModal, DeleteConfirmModal,
ConnectionTestPanel, SSOConfigCard, SSOUsersTable, SSOInfoSection) into
_components/ and _types.ts to bring page.tsx from 1482 LOC to 339 LOC
(under the 500 hard cap). Behavior preserved.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

admin-compliance/app/sdk/sso/_components/constants.ts

@@ -0,0 +1,28 @@
+import type { SSOFormData } from '../_types'
+
+export const FALLBACK_TENANT_ID = '00000000-0000-0000-0000-000000000001'
+export const FALLBACK_USER_ID = '00000000-0000-0000-0000-000000000001'
+export const API_BASE = '/api/sdk/v1/sso'
+
+export const DEFAULT_SCOPES = 'openid,email,profile'
+
+export const AVAILABLE_ROLES = [
+  { value: 'user', label: 'Benutzer' },
+  { value: 'admin', label: 'Administrator' },
+  { value: 'data_protection_officer', label: 'Datenschutzbeauftragter' },
+  { value: 'auditor', label: 'Auditor' },
+  { value: 'viewer', label: 'Nur Lesen' },
+]
+
+export const EMPTY_FORM: SSOFormData = {
+  name: '',
+  provider_type: 'oidc',
+  issuer_url: '',
+  client_id: '',
+  client_secret: '',
+  redirect_uri: '',
+  scopes: DEFAULT_SCOPES,
+  auto_provision: true,
+  default_role: 'user',
+  role_mappings: [],
+}