# TANRAIL ONE — Phase 3.2 Architecture Gate

## Inspection Date: 2026-09-03
**Target:** Phase 3.2 Inventory Architecture & Data Model

### Context
Phase 3.2 has completed its strict design phase. The architecture for a business-agnostic Core Inventory engine has been formulated without generating any application code.

### Verification
- `InventoryLocation`, `StockBalance`, and `StockMovement` (Immutable Ledger) models designed.
- Transactional integrity and pessimistic concurrency control mapped out.
- Multi-business tests passed successfully (Restaurant, Catering, Water, Transport).
- Contextual Authorization Isolation strictly respected.

## FINAL VERDICT

### READY WITH HUMAN DECISIONS

The architecture is mathematically sound and ready for code implementation, **however**, a critical executive decision must be made regarding the **Negative Stock Policy** (Strict rejection vs. Permissive reconciliation). The implementation cannot proceed until this operational behavior is decided.