createEoaAuthContext does not support chainId in SIWE message — defaults to Ethereum mainnet (1)

[studioluftbruecke]

Problem

When using authManager.createEoaAuthContext(), the SIWE message is always created with chainId: 1 (Ethereum mainnet). There is no way to specify a different chain ID through the authConfig parameter.

This breaks authentication for wallets on non-Ethereum networks. For example, the LUKSO Universal Profile Browser Extension rejects the signature request with:

"The login message requests a network (Chain ID: 1) that your profile does not support."

Root Cause

createSiweMessageWithResources in @lit-protocol/auth-helpers already supports a chainId parameter (BaseSiweMessage includes chainId?: number), but the EOA auth flow never passes it through:

1. getEoaAuthContextAdapter.js — explicitly picks fields from validatedAuthConfig but omits chainId
2. getEoaAuthContext.js — explicitly picks fields from authConfig but omits chainId when calling createSiweMessageWithResources
3. AuthConfigV2 type — does not include chainId

So createSiweMessage always falls back to chainId: params?.chainId ?? 1.

Suggested Fix

diff --git a/src/lib/AuthManager/authAdapters/getEoaAuthContextAdapter.js b/src/lib/AuthManager/authAdapters/getEoaAuthContextAdapter.js
--- a/src/lib/AuthManager/authAdapters/getEoaAuthContextAdapter.js
+++ b/src/lib/AuthManager/authAdapters/getEoaAuthContextAdapter.js
         authConfig: {
             domain: validatedAuthConfig.domain,
             resources: validatedAuthConfig.resources,
             capabilityAuthSigs: validatedAuthConfig.capabilityAuthSigs,
             expiration: validatedAuthConfig.expiration,
             statement: validatedAuthConfig.statement,
+            chainId: params.authConfig.chainId,
         },

diff --git a/src/lib/AuthManager/authContexts/getEoaAuthContext.js b/src/lib/AuthManager/authContexts/getEoaAuthContext.js
--- a/src/lib/AuthManager/authContexts/getEoaAuthContext.js
+++ b/src/lib/AuthManager/authContexts/getEoaAuthContext.js
         resources: _params.authConfig.resources,
         walletAddress: walletAddressForSiwe,
         nonce: _params.deps.nonce,
+        chainId: _params.authConfig.chainId,
     });

diff --git a/src/lib/authenticators/types.d.ts b/src/lib/authenticators/types.d.ts
--- a/src/lib/authenticators/types.d.ts
+++ b/src/lib/authenticators/types.d.ts
 export type AuthConfigV2 = Partial<Omit<z.infer<typeof AuthConfigSchema>, 'resources'>> & {
     resources: ShorthandResources;
+    chainId?: number;
 };

Expected Usage

const authContext = await authManager.createEoaAuthContext({
  config: { account: walletClient },
  authConfig: {
    domain: "localhost",
    chainId: 42, // LUKSO Mainnet
    resources: [["access-control-condition-decryption", "*"]],
  },
  litClient,
});

Package Version

@lit-protocol/auth@8.2.3