Manually execute seller-side fulfillment of an existing order with a wallet `signedTx`. Returns the updated order payload after sell. Side effect: broadcasts a market/delegation transaction and may consume balances/resources; not idempotent — each call re-executes. Backend requires a signature session and `mcp-session-id`; the MCP gate is `public` to allow anonymous read-fallthrough, but the GraphQL helper rejects api-key-only sessions. Use only when explicit manual sell is intended; call `tronsave_get_order` first to verify order state before signing.
Connector