Architecture on Elysium

export const ELYSIUM_TESTNET_ID = 99801;

export const chain = defineChain({
  id: ELYSIUM_TESTNET_ID,
  name: 'Elysium Testnet',
  nativeCurrency: { name: 'HYPE', symbol: 'HYPE', decimals: 18 },
  rpcUrls: { default: { http: [rpcUrl] } },        // testnet-rpc.elysium.kinetiq.xyz by default
  blockExplorers: { default: { name: 'Elysium Explorer', url: 'https://elysium.kinetiq.xyz/testnet-explorer' } },
  contracts: { multicall3: { address: '0xcA11bde05977b3631167028862bE2a173976CA11' } },
  testnet: true,
});

// Bridged from Circle's USDC on HyperEVM testnet through the canonical Orbit bridge. 6 decimals.
export const USDC_ADDRESS = '0x7d29d8047b905000459c0e80c34a26ceedcb47b2';

// Pimlico runs both the bundler and the verifying paymaster.
export const PIMLICO_URL = `https://api.pimlico.io/v2/${ELYSIUM_TESTNET_ID}/rpc?apikey=${key}`;

export const pimlicoTransport = http(PIMLICO_URL);
export const pimlicoPaymaster = createPaymasterClient({ transport: pimlicoTransport }); // ERC-7677
export const pimlicoPaymasterContext = SPONSORSHIP_POLICY_ID
  ? { sponsorshipPolicyId: SPONSORSHIP_POLICY_ID }
  : undefined;

// ZeroDev's default fee lookup calls a ZeroDev-only method, and Pimlico rejects ops priced below
// its own quote, so fees come from Pimlico's "fast" tier.
export const pimlicoFeesPerGas = async () => { /* pimlico_getUserOperationGasPrice → fast */ };

const kernelClient = createKernelAccountClient({
  account: kernelAccount,
  chain,                                   // Elysium testnet
  bundlerTransport: pimlicoTransport,
  paymaster: pimlicoPaymaster,
  paymasterContext: pimlicoPaymasterContext,
  client: publicClient,
  userOperation: { estimateFeesPerGas: () => pimlicoFeesPerGas() },
});