Q-numbers and lifecycle

A Q-number is Flipper's durable human-facing inventory identity (Q0001, Q0002, and so on). The allocator is transactional and numbers are never reused, including after correction or archival. Marketplace SKUs may link to Q-numbers, but external linkage does not replace local identity.

Items begin acquired, may become listed, then sold or archived. Supported correction paths can return sold to listed and listed to acquired. Timestamps record known lifecycle facts; Flipper does not invent historical transitions. Archive has no timestamp today, which limits aging and historical reporting.