Read-only reconciliation of Circle wallets vs ListenerSubscription rows.

Surfaces ghost wallets: addresses Circle has minted that are no longer (or never were) bound to a listener row. Circle's Programmable Wallets API does not expose a delete endpoint, so this is informational only — pair with the CIRCLE_AUTO_MINT_ENABLED flag (defaults off) to stop the leak at the source. Output drives the 1k/mo free-tier capacity decision.

Returns: circle_total: count of wallets in the storyflo-listeners walletSet db_total: count of ListenerSubscription rows with wallet_address orphan_count: Circle wallets whose address has no matching DB row orphan_sample: up to 20 orphan addresses (truncated for response size)