[Audit] CSV export logic duplicated instead of reusing the shared, properly-escaping utility

[K1NGD4VID]

Filed from the second-wave repository audit (issue 64/100). See the audit summary for full category context.

• Location: frontend/src/components/dashboard/ActivityHistory.tsx:34-63 vs. frontend/src/utils/csvExport.ts
• Problem: ActivityHistory's exportToCSV builds rows via unescaped .join(","), duplicating the blob/anchor-click download mechanics that frontend/src/utils/csvExport.ts (convertArrayToCSV/downloadCSV) already implements correctly with proper cell escaping.
• Evidence: Two independent CSV-generation implementations in the codebase.
• Suggested implementation: Replace ActivityHistory's ad-hoc export with calls to the shared csvExport.ts utility.
• Acceptance criteria: Exporting activity containing commas/quotes in any field produces a correctly escaped, spreadsheet-safe CSV.
• Difficulty: S
• Expected impact: Fixes real data-corruption-on-export risk while removing duplicated code.

[Akinsuyiphilip]

@Akinsuyiphilip has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

i would love to work on this issue

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

[Blessed-Femi]

@Blessed-Femi has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Let me work on this.

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

[Scepter00]

@Scepter00 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi maintainer, kindly assign this issue.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Scepter00 to this issue.

[drips-wave]

Congratulations, @Blessed-Femi! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @Blessed-Femi: 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.

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@Blessed-Femi's PR #1371 was approved and merged by @K1NGD4VID.

🏆 @Blessed-Femi: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (90 total points). Track your full progress on GrantFox.

👏 Great work, @Blessed-Femi! Keep contributing to LabsCrypt.