# TANRAIL ONE — Phase 3.2.3 Architecture Gate

## VERDICT: READY WITH HUMAN DECISIONS

### Reason
The Core Sales & Order Transaction architecture is robust, highly modular, and strictly adheres to the TANRAIL ONE business-agnostic doctrine. 
It leverages the hardened `InventoryService` for asset management and the `ContextManager` for BU isolation.

### Required Decisions Before Implementation
The following architectural detail must be explicitly decided by the human architect before code is written:

**Location Deduction Strategy**:
When `OrderConfirmed` fires and invokes `InventoryService::issue()`, it requires a specific `InventoryLocation`. Because a `Branch` may contain multiple locations (e.g., Bar, Main Kitchen, Cold Storage), the Core must know where to draw stock from.

*Proposed Solution*: Add a `default_sales_location_id` nullable foreign key to the `Branch` model. If a business extension requires multi-location fulfillment (e.g., Drink from Bar, Food from Kitchen), the business extension will handle the complex routing, but the Core Engine should support a basic default.

### Next Steps
Provide a decision on the Location Deduction Strategy. Once provided, the architecture is considered **READY FOR IMPLEMENTATION**.