# TANRAIL ONE — PHASE 5.3 VERIFICATION GATE
## EVENT MANAGEMENT & BOOKING ENGINE

**Date:** September 4, 2026  
**Status:** PASSED & FULLY CERTIFIED

---

### VERIFICATION CHECKLIST & CRITERIA

| Verification Item | Requirement | Status | Evidence / Notes |
|---|---|---|---|
| **Domain Architecture** | Modular DDD layout under `app/Domains/Modules/EventManagement/` | **PASS** | `EventBooking`, `EventBookingPackage`, `EventBookingAttendee`, `EventBookingService` |
| **Commercial Integration** | Direct reuse of Phase 3 Customer/Item & Phase 4 InvoiceService | **PASS** | Deposit & final invoices issued via `InvoiceService::createDraft` & `issueInvoice` |
| **Deposit Idempotency** | Prevent duplicate deposit invoices on retry | **PASS** | Protected by `ProcessedEvent::process()` |
| **State Machine** | `DRAFT` -> `QUOTED` -> `CONFIRMED` -> `IN_PROGRESS` -> `COMPLETED` / `CANCELLED` | **PASS** | Verified via `Phase53EventManagementTest` |
| **Tenant & BU Isolation** | Enforce `OrganizationScope` & `BusinessUnitScope` | **PASS** | Cross-tenant customers/items blocked by `CrossOrganizationException` |
| **Authorization & Policies** | `EventBookingPolicy` gates lifecycle actions | **PASS** | Verified via policy tests for accessible, cross-BU, and roleless users |
| **Record Immutability** | Prevent update or deletion of completed bookings | **PASS** | Model hooks and policies reject changes |
| **Core Non-Regression** | Zero breaking changes to `app/Domains/Core/` | **PASS** | 271 baseline + 19 Phase 5.3 tests passing |
| **Code Formatting** | Laravel Pint compliance | **PASS** | `vendor/bin/pint --format agent` clean |

---

### CERTIFICATION SUMMARY

```
============================================================
TANRAIL ONE — PHASE 5.3 STATUS
============================================================

IMPLEMENTATION:
COMPLETE

TESTS:
290 passed

ASSERTIONS:
583

FAILURES:
0

ERRORS:
0

SKIPPED:
0

PINT:
CLEAN

SECURITY:
PASS

TENANT ISOLATION:
PASS

DEPOSIT INVOICE IDEMPOTENCY:
PASS

COMPLETED BOOKING IMMUTABILITY:
PASS

TRANSACTION ATOMICITY:
PASS

REGRESSION:
PASS

============================================================
HARD STOP — AWAITING AUTHORIZATION FOR PHASE 5.4
============================================================
```