Signed record of what Robyn can actually do right now

An agent deciding whether to depend on a corridor has only a status page — a claim about NOW that is gone by the time anything goes wrong. When a workflow later fails, nobody can reconstruct what the provider said it could do at the moment the decision was made. This is a signed, timestamped record: serviceableNow (chains that can ACTUALLY be paid out on, from live inventory), policyEligible (the marketing list), notServiceable (the difference), per-rail executeReady, node health, and whether delivery figures are measured or estimated. USE serviceableNow, NOT policyEligible, when choosing a destination. It is a RECORD, not a guarantee: it states what was true at that instant, does not promise the same capability a minute later, and the signature does not make it an SLA — whatThisIsNot says so in the payload.