Fix rate limit query: use ISO strings for dates in sql template

[TheOneWhoBurns]

Summary by CodeRabbit

Release Notes

• Refactor
  • Improved timestamp handling in authentication logic to ensure more reliable timezone-aware comparisons and updates.

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

The change introduces ISO string timestamp variables in the authentication module and updates the SQL upsert logic to perform timezone-aware timestamp comparisons using these new variables instead of previous comparison methods.

Changes

Cohort / File(s)	Summary
Timestamp Handling in Auth Upsert src/lib/server/auth.ts	Introduces nowIso and resetAtIso ISO string variables and refactors SQL upsert logic to use timezone-aware comparisons (cast to timestamptz) for count and resetAt updates.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A rabbit hopped through timestamp lands,
Where ISO strings now shake hands,
With timezone-aware SQL so true,
The upsert logic, fresh and new!
Tick-tock, comparison's done right,
UTC now shines bright! ✨

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch claude/fix-login-session-issue-gs3nR

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