@suluk/credits — a metered credit ledger (C046, extracted verbatim). The package OWNS the schema (credit_transaction
the credit_amount/credit_key sidecars); the app injects a Drizzle handle (D1 in prod, bun:sqlite in tests). The
money-correctness core: the ATOMIC debitIfCovers (a conditional INSERT that can't drive the ledger negative under
concurrency) + the idempotent debitOnceIfCovers (the partial-refund double-spend guard) + per-key spend + the
activity-log query. App-specific payment-alert kinds + the user-table count stay in the app.
nonceFor(reason:string,idemKey:string):string
The DETERMINISTIC ledger row id an idempotent operation maps to — exported so a caller can pre-check existence at the
SAME id debitOnceIfCovers will use, without re-deriving the format and risking drift.
@suluk/credits— a metered credit ledger (C046, extracted verbatim). The package OWNS the schema (credit_transactioncredit_amount/credit_keysidecars); the app injects a Drizzle handle (D1 in prod, bun:sqlite in tests). The money-correctness core: the ATOMICdebitIfCovers(a conditional INSERT that can't drive the ledger negative under concurrency) + the idempotentdebitOnceIfCovers(the partial-refund double-spend guard) + per-key spend + the activity-log query. App-specific payment-alert kinds + the user-table count stay in the app.