fix:Update leaderboard: fixed background

[AlinaRyabova]

Summary by CodeRabbit

• New Features

  • Leaderboard components now accept current-user information to support personalized display.

• Style

  • Updated leaderboard visuals: enhanced title typography, stronger drop shadows, adjusted background layers and fixed positioning for improved depth and readability.

• Refactor

  • Simplified mouse-tracking for leaderboard interactions to improve responsiveness and maintainability.

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[coderabbitai]

📝 Walkthrough

Walkthrough

Introduces a new exported CurrentUser interface and updates LeaderboardClient and LeaderboardTable to use CurrentUser | null. LeaderboardClient also simplifies mouse tracking and shifts several decorative background layers to fixed positioning with updated styling and class composition.

Changes

Cohort / File(s)	Change Summary
Type definition frontend/components/leaderboard/types.ts	Added exported CurrentUser interface with id: string and username: string.
Props & imports frontend/components/leaderboard/LeaderboardClient.tsx, frontend/components/leaderboard/LeaderboardTable.tsx	Replaced AuthUser usage with `CurrentUser
UI logic & visuals frontend/components/leaderboard/LeaderboardClient.tsx	Simplified mouse handling to use raw clientX/clientY; changed several decorative layers from absolute to fixed, adjusted sizes/opacities/z-index, and adopted cn utility for dynamic title classNames. Minor markup/formatting cleanups.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Suggested reviewers

• AM1007
• ViktorSvertoka

Poem

🐰 I nibble code and hop anew,
CurrentUser tucked between the view,
Fixed blurs glow, the title sings,
Mouse tracks simple, lighter wings,
A tiny change — a joyful chew.

🚥 Pre-merge checks | ✅ 1 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title mentions 'fixed background' but the changeset includes significant type system changes (CurrentUser type introduction, type replacements across multiple files) alongside background/styling adjustments. The title is partially related but emphasizes only one aspect.	Consider a more comprehensive title like 'refactor: Introduce CurrentUser type and update leaderboard styling' to accurately reflect both the type system changes and UI updates.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (1 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing touches

• 📝 Generate docstrings

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[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@frontend/components/leaderboard/types.ts`:
- Around line 10-14: The CurrentUser interface exported from
frontend/components/leaderboard/types.ts exposes email unnecessarily; remove the
email field from the client-bound CurrentUser and export a public type with only
id and username (e.g., CurrentUser or PublicCurrentUser) for leaderboard
components, and if server code needs email keep a separate server-only type
(e.g., ServerCurrentUser) that includes email; update any imports/usages to use
the public type in client components and the server-only type where PII is
required.