Subscription page: the one-window model can't express prepaid/postpaid, calendar or
anniversary anchoring, grace or an expiry notice; and renewal is OFF-BOOK today (a PUT
that appends no payment — the same hole closed for the first sale on 2026-06-20).
Designed: plan billing rule, per-day pricing so both anchors share one formula, open-
ended agreement, subscription_periods where each period is a ledger charge and a renewal
= paying the next period, one subscriptionAccess() gate function, expiry notice derived
not stored.
New decision page party-ledger: a counterparty sub-ledger for who-owes-whom across
modules — parties + signed charge / settlement / write_off events, balance derived never
stored, aging + statements + CSV; lands postpaid subscriptions, hotel guest-nights,
fleet washes on account, supplier/utility bills. Sub-ledger only: no bookkeeping, a
statement is not a fiscal invoice, parties per appliance. validation-sponsorship's
sponsor table marked superseded; open-questions #17; index.
Claude-Session: https://claude.ai/code/session_01FWncR69HgGPuei1dLrW3cU
The "permit/lejet" feature is really a subscription. Full rename of the
mutable master data, plus a recurring monthly price.
- DB (migration 0004, data-preserving ALTER RENAME): permits→subscriptions,
permit_credentials/_plates→subscription_*, sessions.permit_id→subscription_id.
- Pricing: per-subscription priceMinor + period(monthly) + currency, with a
site default (site_config.subscription_monthly_price_minor) pre-filling the form.
- Server: subscription-flow.ts (SubscriptionFlow), routes/subscriptions.ts
(/api/subscriptions). Web: SubscriptionManager, route, i18n (sq Abonimet/en).
- The signed ledger `permitId` payload is intentionally kept — immutable
hash-chained history; renaming it would break verification of past events.
Deferred (wiki notes): fee collection into the ledger/shift (a shift-attributed
payment), LPR/ANPR plate source, time-of-day access windows (overnight subscriber).
Also carries the device-footer UI surface (api DeviceStatus, router mount,
i18n devices) due to shared-file overlap with the preceding footer commit.
Verified end-to-end on a fresh DB and migration on a live-DB copy (sessions
preserved). Live DB migrated. Full monorepo builds clean.
Claude-Session: https://claude.ai/code/session_01Xcm6ikLgGoCxxHrxtjkk5V
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.
julian