feat: managed tenant onboarding draft identity and resume semantics (#167)
## Summary
- add canonical managed-tenant onboarding draft routing with explicit draft identity and landing vs concrete draft behavior
- implement draft lifecycle, authorization, attribution, picker UX, resume-stage resolution, and auditable cancel or completion semantics
- add focused feature, unit, and browser coverage plus Spec 138 artifacts for the onboarding draft resume flow
## Validation
- `vendor/bin/sail artisan test --compact tests/Feature/ManagedTenantOnboardingWizardTest.php tests/Feature/Audit/OnboardingDraftAuditTest.php tests/Feature/Onboarding/OnboardingDraftAccessTest.php tests/Feature/Onboarding/OnboardingDraftAuthorizationTest.php tests/Feature/Onboarding/OnboardingDraftLifecycleTest.php tests/Feature/Onboarding/OnboardingDraftMultiTabTest.php tests/Feature/Onboarding/OnboardingDraftPickerTest.php tests/Feature/Onboarding/OnboardingDraftRoutingTest.php tests/Feature/Onboarding/OnboardingRbacSemanticsTest.php tests/Feature/Onboarding/OnboardingVerificationClustersTest.php tests/Feature/Onboarding/OnboardingVerificationTest.php tests/Feature/Onboarding/OnboardingVerificationV1_5UxTest.php tests/Feature/Verification/VerificationReportViewerDbOnlyTest.php tests/Unit/Onboarding tests/Unit/VerificationReportSanitizerEvidenceKindsTest.php tests/Browser/OnboardingDraftRefreshTest.php tests/Browser/OnboardingDraftVerificationResumeTest.php`
- passed: 69 tests, 251 assertions
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #167
ahmido
98e2b5acd9