SPAY4 · CURRENT DIAGRAM

SPay4 架構與 Deposit-only HOUSE 邊界

BO、Agent API、Cardholder 與 LINE 只透過受支援的 target-service 路徑。HOUSE 只參與 Deposit、LINE inbound evidence 與 Deposit quota/reservation；Withdrawal 只透過 Payment Account。

← SPay4 portal

SPay4 架構與 Deposit-only HOUSE 邊界BO、Agent API、Cardholder 與 LINE 只透過受支援的 target-service 路徑。HOUSE 只參與 Deposit、LINE inbound evidence 與 Deposit quota/reservation；Withdrawal 只透過 Payment Account。14 Core + 37 Domain = 51 relations · no database foreign keyAgent API claimlogical relation / service guardspay-bo target servicelogical relation / service guardPayment Account Withdrawallogical relation / service guardHOUSE Deposit evidencelogical relation / service guardimmutable fact/projectorlogical relation / service guard候選 DDL 以 service transaction、owner guard、immutable snapshot、CAS 和 idempotency 維護完整性。