feat(examples/lzapp-migration): unified send task + align DevEx with oft-solana

[nazreen]

This PR was inited by Codex but had to be manually edited afterwards. Manual send testing was also done.

Summary

• unify send task like in oft-solana
• add in simple version of debug command
• update .env.example to also contain Solana variables
• improve ESLint config with modern module resolution
• register all Solana tasks
• use getSolanaKeypair in Solana helpers
• add forge test script
• update wiring task for async key loading

Affected tasks

• send
• debug (newly added)

My Tests

Solana to Sepolia - https://testnet.layerzeroscan.com/tx/38FAXsTFuGxNVbbJFVpRD4Y3NoTPAWHpDUzvcAQBryueDBkoT35WCg8dVXPNZkUQPuLXaJtiHsqHCZTdAyYAEgmY

Sepolia to Solana - https://testnet.layerzeroscan.com/tx/0xccbe7cdc8423f6ccf16174c81d01535005203681d92ac6da0f9280dcbf80a5e9

How you can test

Send

Make sure you have called setMinDstGas:

npx hardhat --network sepolia-testnet lz:lzapp:set-min-dst-gas --dst-eid 40168

Deploy as usual.

Run the send tasks.

Sepolia V1 to Solana:

npx hardhat --network sepolia-testnet  lz:oft:send --src-eid 10161 --dst-eid 40168 --amount 1 --to <SOLANA_ADDRESS>

Solana to Sepolia V1

npx hardhat lz:oft:send --amount 1 --src-eid 40168 --to <EVM_ADDRESS> --dst-eid 10161

Debug

Without needing to deploy:

npx hardhat lz:oft:solana:debug --oft-store G2XdmSk2NLVuF3hZkTRtHJBkDhK8AREEwAXoJrdq4YmS --eid 40168

If you deployed (uses solana deployment file):

npx hardhat lz:oft:solana:debug --eid 40168

[nazreen]

CI is failing due to unrelated reason (hyperliquid)

https://github.com/LayerZero-Labs/devtools/actions/runs/15532105222/job/43723134269?pr=1527#step:6:16140

[nazreen]

CI is all green as of 16 days ago

[St0rmBr3w]

LGTM!

[ItsAdel]

lgtm!

[Copilot]

Pull Request Overview

This PR aligns the lzapp-migration example with the oft-solana patterns, introduces a unified lz:oft:send task for both EVM and Solana, and enhances DevEx tooling for Solana (notably by using getSolanaKeypair and adding a debug command).

• Introduce sendSolana, sendEvm, and a top-level lz:oft:send task for unified cross-chain sends
• Swap direct env-key loading for getSolanaKeypair in Solana helpers and add a debug task
• Update .env.example, ESLint config, and task exports to support new tooling

Reviewed Changes

Copilot reviewed 21 out of 21 changed files in this pull request and generated 3 comments.

File	Description
examples/oft-solana/.env.example	Grouped EVM vars, added Solana-specific env settings
examples/lzapp-migration/tasks/solana/utils.ts	Added parseDecimalToUnits and silenceSolana429 helpers
examples/lzapp-migration/tasks/solana/index.ts	Refactored deriveConnection and useWeb3Js to use getSolanaKeypair
examples/lzapp-migration/tasks/index.ts	Swapped in unified send task and new Solana commands

Comments suppressed due to low confidence (3)

examples/lzapp-migration/tasks/index.ts:13

• There is no setAuthority.ts file in the solana tasks directory; it looks like this should import setUpdateAuthority.ts instead.

import './solana/setAuthority'

examples/lzapp-migration/tasks/index.ts:14

• No updateMetadata.ts exists in the solana folder; verify the correct filename or remove this import.

import './solana/updateMetadata'

examples/lzapp-migration/tasks/index.ts:16

• There is no getPrioFees.ts module in the solana tasks; confirm the intended file or update the import path.

import './solana/getPrioFees'

[St0rmBr3w]

Minor comments, otherwise looks good

[St0rmBr3w]

LGTM!