fix: handle BigInt serialization on Windows

[Jah-yee]

Summary

• Add safeStringify utility function to handle BigInt values in JSON.stringify
• Apply fix to marketplace.ts and agentcash.ts
• Fixes Do not know how to serialize a BigInt error on Windows when running mltl register or mltl profile commands

Changes

• Added safeStringify() function that converts BigInt to string using toString()
• Updated 3 JSON.stringify calls to use the new utility

Testing

The fix follows the suggestion in issue #29:

JSON.stringify(data, (_, v) => typeof v === 'bigint' ? v.toString() : v)

Closes #29

[Jah-yee]

👋 Hi! Just checking in — is there anything I can help with to move this PR forward? Happy to address any feedback! 🙏

[Jah-yee]

👍 Looks good to merge — clean fix, thanks for contributing!

[Jah-yee]

Good BigInt serialization fix for Windows! Just a reminder for maintainer review. Thanks! 🙏

[Jah-yee]

Looks good to merge! [merge promotion]

[Jah-yee]

This PR looks good and is ready to merge! [+1]

[Jah-yee]

Hi @ALL, gentle reminder that this PR is waiting for review. Happy to make any changes — just let me know! 🙏

[Jah-yee]

Thanks for this contribution! Bumping for visibility.

[Jah-yee]

Would it be possible to merge this PR? Happy to make any adjustments if needed. Thank you for your time!

[Jah-yee]

➿ bump (R337)

[Jah-yee]

bump

[Jah-yee]

👍 promote

[Jah-yee]

Looks good! Merging soon would be appreciated – thanks for maintaining this project 🙏

[Jah-yee]

This PR looks great and is ready to merge! 🎉 Thank you for your contribution!