Fix SAC date format

[mgoodness]

• feat(statistics): add date field to RankingItem class
• fix(statistics): format best/worst SAC dates according to user preference

Summary

Closes #159

Changes

• Add a date field to the RankingItem class & set it when retrieving best/worst SAC dives
• Apply the UnitFormatter to best/worst SAC dives when building the gas statistics page

Test Plan

• flutter test passes
• flutter analyze passes
• Manual testing on: MacOS

Screenshots

Before:

After:

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...istics/presentation/pages/statistics_gas_page.dart	0.00%	2 Missing ⚠️

📢 Thoughts on this report? Let us know!

[mgoodness]

Happy to have Claude generate additional test coverage (here and/or in my other PR) if that's desired. The Integration Test failure seems to have been a caching issue. I can try to address that in the workflow, too. I work with GH Actions for a living 😄.

[Copilot]

Pull request overview

This PR fixes the SAC “best/worst” record date display in the gas statistics page so it honors the user’s configured date format. It does so by passing the underlying DateTime through UnitFormatter.formatDate(...) instead of hardcoding day/month/year.

Changes:

• Add a date field to RankingItem and populate it when fetching best/worst SAC record dives.
• Update the gas statistics SAC record cards to format the record date via UnitFormatter.formatDate(...).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
lib/features/statistics/presentation/pages/statistics_gas_page.dart	Uses UnitFormatter.formatDate(...) for best/worst SAC record subtitles.
lib/features/statistics/data/repositories/statistics_repository.dart	Extends RankingItem with a date field and sets it when mapping SAC record query results.

[ericgriffin]

👍