Deterministic procedure for an agent deciding whether to settle an x402 payment on the public rail or through a privacy-

Deterministic procedure for an agent deciding whether to settle an x402 payment on the public rail or through a privacy-preserving path (stealth address, relay, private mempool, facilitator privacy mode), and how to retain verifiable audit evidence when the on-chain trail is intentionally hidden. Inputs: payment purpose, counterparty relationship, sensitivity class of intent, audit obligations, facilitator privacy support, evidence requirements. Checks: (1) intent sensitivity, classify what the