feat: add Albedo wallet adapter

[gloriaelishahabu]

Overview

The WalletConnect component currently supports Freighter only. This issue tracks adding full Albedo support via @albedo-link/intent.

What needs to be built

• Install @albedo-link/intent as an optional peer dependency
• Implement connectAlbedo() adapter in StellarPayProvider.tsx
• Implement signWithAlbedo() using albedo.tx({ xdr, network })
• Add Albedo to the WalletType union (already declared, needs wiring)
• Test on testnet with a real payment flow

Albedo API reference

import albedo from "@albedo-link/intent";

// Get public key
const { pubkey } = await albedo.publicKey({ token: "optional-token" });

// Sign transaction
const { signed_envelope_xdr } = await albedo.tx({
  xdr: unsignedXdr,
  network: "testnet", // or "public"
  submit: false,
});

Acceptance criteria

• <WalletConnect wallets={["albedo"]} /> connects and returns a public key
• useTransaction().sendPayment() signs and broadcasts via Albedo
• No breaking changes to existing Freighter flow

Related

Closes once Albedo adapter is merged and tested on mainnet.