Automatic stock synchronization
The stock sync engine that makes central stock the single source; it decrements on sale, adds back on return, and sends the updated quantity to all connected channels as an absolute value.
- Central stock as the single source of truth (cross-channel consistency)
- Automatic decrement on sale, add-back on return/cancellation
- Broadcast to all connected channels with an absolute quantity — no double decrement (idempotent)