julian
692dff5f89
In-park merchants discharge customers' parking: a merchant user scans the ticket on their device (/validate; validation:create + program↔user binding) and applies their program — comp / first-N-minutes free / amount-off (capped, typed at scan) / percent. All money stays at the booth: the quote folds live validations in a canonical order (timeCredit → percent → fixed → comp, net floors at 0, Σ lines ≡ gross − net), the payment records gross/discount and CONSUMES the validation ids (an overstay's fresh period never re-applies them), the receipt prints the gross → lines → net story, and the Z/X-report carries discountTotalMinor leakage. Every apply/void is a signed, attributed ledger event (refId = append-only void); program config is /setup/site master data (Bar/Lavazh checkboxes + right-column panel, tabs when both) whose saves sign config_change. Migration 0024 + reset-db drift-guard entries; 8 route integration tests + priceSession fold suite. See wiki/concepts/validation-discounts.md for the full design record. Claude-Session: https://claude.ai/code/session_01YYkpEsLmoQPaize5ec3oUm