# TANRAIL ONE — PHASE 5.5
# VERIFICATION GATE

STATUS: PASS

## CRITERIA VALIDATION
| Criteria | Result | Notes |
|----------|--------|-------|
| Tenant Isolation (Locations, Items) | PASS | Strong model-to-tenant validations in place. |
| Business Unit Isolation | PASS | Granular Business Unit scoping validated. |
| Granular Capabilities / Policies | PASS | Integrated `manage-production` and `manage-events`. |
| Privilege Escalation Protection | PASS | `authorizeAction()` successfully denies unprivileged role usage. |
| Record Immutability | PASS | `ProductionOrderPolicy` & `EventBookingPolicy` block terminal mutation. |
| Financial & GL Idempotency | PASS | Intact and fully unaffected. |
| Adversarial Security Tests | PASS | Covered 9 distinct cross-tenant & privilege escalation vectors. |
| Full Regression Suite | PASS | Zero broken tests from prior phases. |
| Code Formatting (Pint) | PASS | No stylistic violations detected. |

## CONCLUSION
Phase 5.5 — Security Hardening, Policies & Tenant Isolation has been successfully implemented and verified.
The Production and Event Management modules are now secured and ready for Phase 5.6.