fix: tighten workspace RBAC access boundaries (#364)
## Summary
- tighten workspace RBAC and panel access boundaries
- remove non-owner workspace membership management capability from workspace role mapping
- add focused boundary coverage for admin panel, managed environments, providers, review packs, operation runs, finding exceptions, and workspace role capabilities
- include spec artifacts for feature 309
## Testing
- cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Feature/Auth/WorkspaceFirstManagedEnvironmentAccessTest.php tests/Feature/Rbac/RoleMatrix/ManagerAccessTest.php tests/Feature/Rbac/WorkspaceMembershipsRelationManagerUiEnforcementTest.php tests/Feature/Rbac/AdminPanelAccessBoundaryTest.php tests/Feature/Rbac/FindingExceptionLifecycleAccessBoundaryTest.php tests/Feature/Rbac/ManagedEnvironmentAccessBoundaryTest.php tests/Feature/Rbac/OperationRunAccessBoundaryTest.php tests/Feature/Rbac/ProviderConnectionAccessBoundaryTest.php tests/Feature/Rbac/ReviewPackAccessBoundaryTest.php tests/Feature/Rbac/SystemPanelAccessBoundaryTest.php tests/Feature/Rbac/WorkspaceRoleCapabilityBoundaryTest.php tests/Unit/Auth/CapabilityResolverTest.php tests/Unit/Auth/WorkspaceRoleCapabilityMapTest.php
- cd apps/platform && ./vendor/bin/sail bin pint --dirty --format agent
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #364