[FE-74] Locale-aware formatting for dates, numbers, and coordinates

[mftee]

Overview

Translating strings is only part of localization. Dates, numbers, and geographic coordinates displayed for land documents must also follow locale conventions — 03/04/2026 means different dates in different locales, which for a land registry is a genuine correctness problem rather than a cosmetic one.

Tasks

• Use next-intl's formatting helpers for all dates, times, numbers, and percentages rather than manual formatting.
• Standardize date display and prefer an unambiguous format for legally significant dates.
• Ensure risk scores and percentages use locale-appropriate decimal separators.
• Display timestamps in the user's timezone with the timezone indicated, and store in UTC.
• Ensure map coordinates use a consistent, documented format.
• Add tests asserting formatting differs correctly across the three locales.

Acceptance Criteria

• All dates and numbers render through locale-aware formatters.
• Legally significant dates are unambiguous in every locale.
• Formatting differences across locales are covered by tests.

Dependencies

Pairs with [FE-70].

Notes for Contributors

Comment below to be assigned.

[ZuLu0890]

@ZuLu0890 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would love to work on this issue and give it a high quality PR

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ZuLu0890 to this issue.

[limxiy]

@limxiy has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Can I work on this issue please

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

[drips-wave]

Congratulations, @limxiy! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @limxiy: 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

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[drips-wave]

This issue has been completed by @limxiy as part of the Stellar Wave Program's 7th Wave 🥳

😎 @limxiy: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.