API capability pack for bounded Wave Accounting GraphQL operations against https://gql.waveapps.com only. Reads the authenticated user, setup constants, businesses, customers, products/services, invoices, invoice payments, chart-of-account payment accounts, sales taxes, vendors, and estimates. Bundles daily bookkeeping, collections, customer/product intake, invoice and estimate draft/send, estimate-to-invoice conversion, manual payment workflows, and a closed-loop invoice reminder-exception pair that sends an owner-approved Wave invoice email only when native reminders are insufficient, then watches Wave until the invoice is paid or resolved. Enroll a Wave OAuth access token or personal full-access token connection as bearer auth; no credential is embedded in the manifest. Writes are approval-gated and limited to customer create/update, product create/update, invoice create/update/clone/approve/mark-sent/send, invoice payment record/update/receipt-send, estimate create/update/clone/approve/mark-sent/mark-accepted/send/PDF/convert, and estimate deposit payment record/update/receipt-send. The pack intentionally excludes customer/product/invoice/estimate delete or archive, account/tax mutation, money transaction creation, estimate acceptance reset, webhooks, arbitrary GraphQL passthrough, OAuth app administration, and cross-host egress.