https://docs.weihsin.dev/https://docs.weihsin.dev/adr/0001-no-database/https://docs.weihsin.dev/adr/0002-validation-in-app-not-sp/https://docs.weihsin.dev/adr/0003-per-row-failure-reporting/https://docs.weihsin.dev/adr/0004-deterministic-batch/https://docs.weihsin.dev/adr/0005-batch-idempotency/https://docs.weihsin.dev/adr/0006-zero-cost-hosting/https://docs.weihsin.dev/api/architecture/https://docs.weihsin.dev/api/deployment/