feat(compliance): Implement FATF travel-rule metadata for cross-chain transfers

[nanaf6203-bit]

Embed originator/beneficiary hashes in bridge messages so cross-chain transfers comply with travel-rule metadata requirements.

[neyij]

@neyij has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

hi, i would like to work on this.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @neyij to this issue.

[ykargeee-bit]

@ykargeee-bit has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi Maintainer,

I’m a full-stack developer, and I’d like to contribute to the task. I’ll implement it carefully and efficiently thoroughly understand requirements and edge cases
Communicate promptly about suggestions or improvements. And I will provide regular progress updates and address blockers
Align with project goals through feedback and clarification.

Thank you,

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ykargeee-bit to this issue.

[drips-wave]

Congratulations, @ykargeee-bit! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @ykargeee-bit: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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