Reclaim data for the payer (unsigned calldata)

Everything the PAYER needs to recover the unspent cap themselves: the escrow address, the chain id, ABI-encoded reclaim(PaymentInfo) calldata and the instant it becomes eligible. EM never signs and never sends this transaction — the payer submits it from their own wallet (ADR-001), which is what makes the escape hatch trustless: it works even if EM is down, malicious or refuses. reclaim is onlySender(info.payer) and requires block.timestamp > authorizationExpiry.

Payer-only: the response carries the signed escrow authorization, so it is never part of the unsigned session read (D12).