feat: canonical tenant context resolution (#164)
## Summary
- introduce a canonical admin tenant filter-state helper and route all in-scope workspace-admin tenant resolution through `OperateHubShell::activeEntitledTenant()`
- align operations monitoring, operation-run deep links, Entra group admin list/view/search behavior, and shared context-bar rendering with the documented scope contract
- add the Spec 135 design artifacts, architecture note, focused guardrail coverage, and non-regression tests for filter persistence, direct-record access, and global search safety
## Validation
- `vendor/bin/sail bin pint --dirty --format agent`
- `vendor/bin/sail artisan test --compact tests/Feature/Monitoring/OperationsKpiHeaderTenantContextTest.php tests/Feature/Monitoring/OperationsTenantScopeTest.php tests/Feature/Monitoring/OperationsCanonicalUrlsTest.php tests/Feature/Spec085/OperationsIndexHeaderTest.php tests/Feature/Spec085/RunDetailBackAffordanceTest.php tests/Feature/Filament/OperationRunListFiltersTest.php tests/Feature/Filament/EntraGroupAdminScopeTest.php tests/Feature/Filament/EntraGroupGlobalSearchScopeTest.php tests/Feature/DirectoryGroups/BrowseGroupsTest.php tests/Feature/Filament/EntraGroupEnterpriseDetailPageTest.php tests/Feature/Filament/PolicyVersionResolvedReferenceLinksTest.php tests/Feature/Filament/EntraGroupResolvedReferencePresentationTest.php tests/Feature/Guards/AdminTenantResolverGuardTest.php tests/Feature/OpsUx/OperateHubShellTest.php tests/Feature/Filament/Alerts/AlertsKpiHeaderTest.php tests/Feature/Alerts/AlertDeliveryDeepLinkFiltersTest.php`
- `vendor/bin/sail artisan test --compact tests/Feature/Filament/TableStatePersistenceTest.php tests/Feature/Filament/TenantScopingTest.php tests/Feature/Filament/Alerts/AlertDeliveryViewerTest.php tests/Unit/Support/References/CapabilityAwareReferenceResolverTest.php`
## Notes
- Filament v5 remains on Livewire v4.0+ compliant surfaces only.
- No provider registration changes were needed; Laravel 12 provider registration remains in `bootstrap/providers.php`.
- Entra group global search remains enabled and is now scoped to the canonical admin tenant contract.
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #164
ahmido
cc93329672