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docs(wiki): tariff research — legacy ParkSQL2017 schema, time-tiers & validation/sponsorship design

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Ingest the predecessor SQL Server schema (raw + source summary) and file design
pages for time-of-day/seasonal tariff tiers and merchant validation/postpaid
sponsorship. Cross-link tariff.md and validation-discounts.md. No code.
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Julian Çuni
2026-06-18 10:59:21 +02:00
parent 71aaad03b9
commit 58d8f06ba0
6 changed files with 1582 additions and 3 deletions
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wiki/concepts/validation-discounts.md
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@@ -39,8 +39,17 @@ Because each validation is signed and attributed (`issuedBy`), over-validation b
merchant is **visible to [[reconciliation]]** (a merchant validating far more than their footfall is
an anomaly), rather than invisible free parking.
## Postpaid sponsors
When the validating party is a **business with a postpaid agreement** (its customers park free, it's
billed monthly) — not just a one-off discount — the **sponsor account + settlement** layer is in
[[validation-sponsorship]]. That's the distinction between a discount (this page) and a *sponsored*
session that accrues a receivable.
## Open
- Validation types the site needs (free hours / fixed amount / percentage / flat rate).
- Validation types the site needs (free hours / fixed amount / percentage / flat rate) — superset in
[[validation-sponsorship]] (`comp`/`percent`/`fixed`/`time-credit`/`rate-switch`).
- Whether merchants self-serve (portal/terminal) or the operator applies it.
- Caps (max discount, max per merchant/day).
- Prepaid coupon pool vs. postpaid accrual — see [[validation-sponsorship]].