## ADDED Requirements

### Requirement: Merchant flash-sale management
Shop users SHALL manage only their flash-sale sessions and items in shop-admin, choosing their own SKU, active window, minor-unit sale price, reserved stock, and per-customer limit. Shop-admin SHALL expose a flash-sale navigation entry beside existing shop operations.

#### Scenario: configure item
- **WHEN** a merchant creates an active valid flash-sale item for its SKU
- **THEN** it appears to customers through active flash-sale discovery

#### Scenario: flash sales appear in shop navigation
- **WHEN** an authenticated shop user opens shop-admin
- **THEN** a flash-sale management entry is reachable without leaving the shop-scoped console