[Improvement] Add export-to-CSV for the new admin audit log and account-wide transaction history consistency check

[grantfox-oss]

Getting Started

1. Fork the repository: https://github.com/JointSave-org/Joint_Save
2. Clone your fork:

   git clone https://github.com/<your-username>/Joint_Save.git
   cd Joint_Save

3. Create a new branch:

   git checkout -b improve/transactions-export-consistency

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Overview

The Transactions tab already has a CSV export. This issue is about a smaller, focused follow-up: double-check that the exported CSV's date formatting is consistent with the rest of the app now that formatRelativeTime/formatExactDateTime exist, and that the exported amounts correctly reflect each pool's actual token (now that multi-token support has shipped) rather than assuming everything is XLM.

Requirements

• Audit the existing CSV export logic in the Transactions tab
• Confirm amounts in the export are labeled with the correct token symbol per row (not just XLM for everything), now that pools can use different tokens
• Confirm exported dates use a consistent, unambiguous format (full ISO date, not a relative string like "2 hours ago" which wouldn't make sense in an exported file read later)

Acceptance Criteria

• PR description documents whether either of these was actually a real bug, since this needs verification before assuming a fix is needed
• If amounts were mislabeled, exported CSV correctly shows the right token symbol per pool
• Exported dates are absolute, not relative

[Ebenezer199914]

can i work on this issue

[Ebenezer199914]

can i work on this issue

[grantfox-oss]

🦊 GrantFox — @Ebenezer199914 has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #149)
2. Your PR will be reviewed by the JointSave-org maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@Ebenezer199914's PR #154 was approved and merged by @Sendi0011.

🏆 @Ebenezer199914: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (226 total points). Track your full progress on GrantFox.

👏 Great work, @Ebenezer199914! Keep contributing to JointSave-org.