⚡ Bolt: optimize badge evaluation with EvaluationCache

[projectamazonph]

What

We have introduced a request-scoped EvaluationCache to src/lib/badges.ts to hold and share database query promises (completed lessons, tool sessions, user details) across all badge criteria checks during a single evaluateBadges call.

Why

During badge evaluation, we iterate over all published badges and check their criteria. Evaluating these criteria independently triggered redundant database queries for the same metrics and user profiles (e.g., querying streakDays or completed lessons for multiple badges). This led to O(R) database roundtrips, where R is the number of badges.

Impact

Collapses database queries from O(R) roundtrips down to O(1) per evaluation lifecycle, leading to significantly faster response times and lower database load.

Measurement

Added a targeted unit test collapses redundant database queries during a single evaluateBadges run using EvaluationCache in src/lib/__tests__/badges.test.ts which verifies that db.user.findUnique is called exactly once despite multiple criteria checking user-specific properties during the evaluation. All 213 unit tests are fully passing.

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PR created automatically by Jules for task 3719912686428013341 started by @projectamazonph

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Review failed

The head commit changed during the review from 7660c69 to 7259a33.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch bolt-badge-evaluation-cache-3719912686428013341

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