QoL batch 2

[nazreen]

There should be a helper to go from endpoint id to network name

Problem

• No public utility to go from endpoint ID to chain ID, though there is one for going from endpoint ID to network name
• getDefaultChainId (from network name to chain ID) exists in verify-contract but wasn't exported

Changes

• Export getDefaultChainId from @layerzerolabs/verify-contract

Notes

• Somehow we only store the mapping between chainkey and chain ID in the verify-contract package

How to use

import { getDefaultChainId } from '@layerzerolabs/verify-contract'                                            
                                                                                                                
getDefaultChainId('ethereum-mainnet')  // 1                                                                   
getDefaultChainId('polygon-mainnet')   // 137                                                                 
getDefaultChainId('hyperevm-mainnet')  // 999 

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--only-oft-store should be a flag, not param

Problem

• --only-oft-store required passing true as a value, which is verbose for a boolean flag.

Changes

• Converted --only-oft-store from boolean param to a flag in createOFT.ts and setAuthority.ts
  across oft-solana and lzapp-migration examples.
• Updated error messages, prompts, and README docs to use --only-oft-store (no true).

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[github-actions]

🧪 E2E Test Status

E2E tests are non-blocking and validate real blockchain interactions. Failures may occur due to network issues, RPC rate limits, or external service downtime.

Test Runs (Newest First):

• ✅ Run #6607 - Passed - 2026-01-22 01:42 (UTC)
• ✅ Run #6604 - Passed - 2026-01-21 23:56 (UTC)
• ✅ Run #6571 - Passed - 2026-01-16 23:33 (UTC)

[nazreen]

will collapse this into another PR