REST API v.2.0

**Authentication (Client API)**
These endpoints are hosted by the Client System. Bigcity Microsite calls these APIs for OTP generation and verification.
Resource	Description
POST /api/v1/auth/generate-otp CLIENT	Validate Customer ID and generate OTP
POST /api/v1/auth/verify-otp CLIENT	Validate OTP and authenticate customer

**Customer Points (Client API)**
Endpoints for managing customer points. Client System is the master ledger.
Resource	Description
GET /api/v1/customer/points CLIENT	Fetch latest customer points information

**Catalog (Bigcity API)**
Endpoints for browsing available rewards (E-Gift Vouchers, Merchandise).
Resource	Description
GET /api/v1/catalog	Retrieve available rewards catalog

**Orders**
Endpoints for order placement, status, redemption, and reversal.
Resource	Description
POST /api/v1/orders	Create reward redemption order (Bigcity API)
GET /api/v1/orders/status	Get order fulfillment status (Bigcity API)
POST /api/v1/orders/redeem CLIENT	Deduct points from customer ledger
POST /api/v1/orders/reverse CLIENT	Reverse points for failed/cancelled orders