Integration reference

Hosted payments, with merchant-direct settlement.

The complete implementation and deployment guidance lives with the source so security assumptions change in the same review as the code.

Integration

Trusted session creation, modal and bottom-sheet embedding, callbacks, status, and card management.

Trust boundaries, state transitions, merchant routing, entitlement fulfillment, and future wallet separation.

PCI data flow, production controls, operational rollout, recovery, and reconciliation requirements.

Repository files: docs/INTEGRATION.md, docs/ARCHITECTURE.md, docs/PCI-BOUNDARY.md, and docs/OPERATIONS.md.