## Summary
- retire the tenant panel runtime and converge operator routing on the workspace-first admin shell
- update tenant, operations, and required-permissions navigation helpers to use canonical workspace-scoped URLs
- repair the focused feature coverage, add the Spec 280 browser smoke, and record the implementation close-out in the requirements checklist
## Validation
- `cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Feature/WorkspaceFoundation tests/Feature/Workspaces tests/Feature/ManagedEnvironment tests/Feature/RequiredPermissions tests/Feature/Operations tests/Feature/MonitoringOperationsTest.php`
- `cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Browser/Spec280WorkspaceTenancyEnvironmentRoutingSmokeTest.php`
- `cd apps/platform && ./vendor/bin/sail bin pint --dirty --format agent`
## Note
- `origin/platform` is not present on the remote; `platform-dev` is the clean base branch that limits this PR to the Spec 280 prep commit plus the implementation commit.
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #340
## Summary
- add the implementation-ready spec-prep artifacts for Spec 280: Filament Workspace Tenancy & Environment Routing Cutover
- define the bounded scope, rollout constraints, route contract, and validation plan for the workspace-first routing cutover
- update the generated Copilot agent context for the active feature branch
## Testing
- not run; this branch adds spec-prep artifacts only and does not change application code
## Notes
- no application runtime, database, or frontend code changes are included in this PR
- target base branch requested: `platform-dev`
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #336
