facilitator-probe

Live-probe every keyless x402 facilitator PipRail ships — is it still up, does it still advertise the networks we claim, and what does it support that we don't seed yet. Triggers on 'check the facilitators', 'are the facilitators still live', 'facilitator coverage', 'probe facilitators', 'is x402 facilitator X up', 'which chains have a facilitator', before any release touching facilitator routing, and before…