Post and fill an ERC-7683 intent

import { TenzroClient } from "tenzro-sdk";

const client = new TenzroClient({ endpoint: "https://rpc.tenzro.network" });
const erc7683 = client.erc7683();

// The order_id is deterministic:
//   SHA-256("tenzro/7683/order" || swapper || nonce_le || origin_chain_id_le
//           || fill_deadline_le || order_data_type || order_data)
// Compute it locally (off-node) and persist the envelope on the origin chain.
// Then read it back through the ERC-7683 client:
const order = await erc7683.getOrder(orderId);
console.log(order);

Posting writes the envelope under the 7683_origin: keyspace in CF_SETTLEMENTS. The OrderState starts Open and transitions through AwaitingProof as the fill side acks.

A filler picks up the order from the chosen ProofRoute (LayerZero, Wormhole, DeBridge, or Hyperlane), executes the FillInstruction on the destination chain, and writes idempotent state under 7683_dest:<order_id>.

When the proof arrives back on origin, OrderState becomes Settled. If the fill never lands by fillDeadline, the order becomes ForceRefundEligible; the swapper triggers a refund. The u128 ↔ uint256 helpers reject silent truncation on amounts larger than the internal ledger can express.